Miriam E. Tucker

Highlights of the European Association for the Study of Diabetes 2022 annual meeting include new data on weight loss with the blockbuster twincretin tirzepatide and on the effects of dapagliflozin on heart failure in people with diabetes, as well as updated guidelines for type 2 diabetes management.

The EASD meeting will take place Sept. 19-23 in Stockholm. It will be the first in-person meeting since 2019 but will also feature live-streamed content for participants around the world.

“The EASD congress will cover all the different areas and aspects of diabetes research – clinical, basic, epidemiologic, and psychological,” EASD President Stefano Del Prato, MD, told this news organization.

What attendees should expect, said Del Prato of the University of Pisa (Italy), “is the pleasure to be able to participate in person at a meeting and get useful information, not only in terms of the knowledge and intellectual aspects of diabetes, but also something that can be implemented the following day in their daily clinical activities.”  

EASD Honorary Secretary Mikael Rydén, MD, added: “I think meeting attendees will really be able to get the absolutely latest developments in all the areas that are relevant to diabetes treatments. It’s the best way to keep yourself up to date.”

This year, in particular, there’s a focus on past, present, and future trends in type 2 diabetes management, along with the co-occurring conditions of obesity, heart failure, and metabolic fatty liver disease.  
 

DELIVER: The diabetes side

On Sept. 22, new data will be presented from the DELIVER trial on the sodium-glucose cotransporter 2 (SGLT2) inhibitor dapagliflozin (Farxiga) in patients with heart failure with preserved ejection fraction, comparing data for participants with diabetes, prediabetes, and normoglycemia.

Primary results from DELIVER were presented Aug. 26 at the European Society of Cardiology Congress 2022 in Barcelona and simultaneously published in the New England Journal of Medicine. The results showed that dapagliflozin benefits patients with heart failure with preserved ejection fraction, as previously demonstrated in those with reduced ejection fraction in the DAPA-HF trial.

“This information is quite important and is becoming of major interest in the field of diabetes,” Dr. Del Prato said, adding that a related joint EASD/ESC symposium will take place the next morning, on Sept. 23, entitled, “New perspectives on heart function and failure in diabetes.”

“So, within the congress, you get the background, pathophysiology, the diagnostic aspects, and the results of the effect of dapagliflozin on those individuals.”

Dr. Rydén commented, “I think this underlines how important it is for diabetologists to screen our patients better for heart failure because we can actually treat them now.”

However, Dr. Rydén of the Karolinska Institute, Stockholm, also cautioned about use of SGLT2 inhibitors in people with diabetes who use insulin, given the risk of euglycemic diabetic ketoacidosis. “These drugs have side effects and you have to be wary who you prescribe them to. For those on multiple daily [insulin] injections, the side effects probably outweigh the benefits.”
 

Tirzepatide, weight loss, and type 2 diabetes remission

On Sept. 21, a symposium will provide new data for the dual glucagonlike peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) agonist tirzepatide, approved for the treatment of type 2 diabetes in the United States in May with the brand name Mounjaro. The agent is now being studied as an obesity treatment.

Data from the SURMOUNT-1 trial presented at the ADA meeting in June showed the drug produced “unprecedented” weight loss of up to 22.5%.

At EASD, those findings will be reviewed and new data presented on morbidity and mortality, along with a new commentary. The degree of weight loss seen with this new twincretin has furthered discussion about the concept of remission in type 2 diabetes, Dr. Rydén noted. That will also be the subject of the Diabetologia symposium on Sept. 21, entitled, “Remission of type 2 diabetes – fact or fiction?”

Regarding tirzepatide, Dr. Rydén said: “It’s amazing, the most powerful antiobesity drug we have at our disposal. These drugs slow gastric emptying and have other beneficial effects. … We’re now closing in on drugs that produce more than 15% weight loss. That appears to be the ‘magic bullet’ where you can achieve type 2 diabetes remission.” He pointed to a symposium sponsored by The Lancet on this topic at last year’s EASD meeting.

“I think what we want with our drugs is not to treat but actually to combat type 2 diabetes and really to achieve remission. Of course, if you’ve had it for many decades that might be impossible, but we know that particularly in the first 5-10 years it’s very important to have good glucose control and we know we can also achieve remission.”

Dr. Del Prato noted the importance of weight reduction at the time of type 2 diabetes diagnosis will be emphasized in the ADA/EASD consensus document on the management of hyperglycemia in type 2 diabetes, to be presented in its final form on Sept. 23.

“I think we’ll be learning more about potential remission in the future, both because of metabolic surgery and agents like tirzepatide. The reduction in body weight that can be achieved [with these newer drugs], or that has been reported so far, is the closest to what can be obtained with metabolic surgery. I think there will be more and more information and a lot of discussion about this, and of course about the definition of remission and what to do after remission has occurred,” Dr. Del Prato said.  

The revised ADA/EASD consensus document is expected to endorse weight loss as a “co-primary goal” of care for those without cardiorenal disease, along with early initiation of combination therapies – for example, taking two drugs immediately upon diagnosis, rather than just metformin – as opposed to the prior stepwise approach. The document will also cover use of newer glucose-lowering therapies, surgery, and behavioral interventions.  

The key is a holistic approach, Dr. Del Prato said. “Of course, glucose control is important, but it’s not the only thing. The heterogeneity of the population with diabetes is also important. Some may already have microvascular complications, kidney dysfunction, are more or less obese, and older or younger. We need to keep these differences in mind to provide more and more individualized treatment.”

Related to that, he noted, will be a joint EASD/ADA symposium on Sept. 19, entitled, “Precision medicine in type 2 diabetes: How far can we get?”
 

COVID-19 and diabetes, UKPDS, type 1 diabetes, and much more

As always, there’s a whole lot more. On Sept. 21, there will be a symposium on COVID-19 and diabetes.

Another, on diabetes technology, has a somewhat cautionary theme: “A new hope (Star Wars) or strange new worlds (Star Trek): Submerging diabetes into emerging technologies.” One of the speakers will address the question: “Are we becoming robots? Automated insulin delivery (AID) systems for everyone with type 1 diabetes: Strengths and limitations.” And this year’s EASD/JDRF symposium topic will be prevention of type 1 diabetes.

Yet another symposium on Sept. 21 will present 44-year follow-up data from the landmark United Kingdom Prospective Diabetes Study (UKPDS), including an economic analysis and a look at dementia outcomes. “It’s a historical thing. This big trial represents a gold mine of information,” Dr. Del Prato commented.

On Sept. 22, new data will be presented for the investigational once-weekly insulins during a symposium entitled, “Re-inventing the insulin experience: Exploring the prospects of once-weekly insulins.”

And lest anyone was thinking of leaving the conference early, there’s a full agenda on Sept. 23, including symposia on diabetic nephropathy, type 1 diabetes, diabetes in old age, dietary management, and the role of primary care, among others. There will also be 12 separate oral presentation sessions that day.

Overall, the meeting will reflect the multidisciplinary direction the field is headed, Dr. Rydén said.

“We’re still in an era of medicine where a lot of things happen every year. Now we have the next generation of drugs that are coming that combine many areas of treatment – obesity, cardiology, and nephrology. So, we’re integrating. The future is integrating the diabetes world with our friends in other areas of clinical medicine.”

Dr. Del Prato has reported being a consultant, advisory board member, and/or lecturer for AstraZeneca, Boehringer Ingelheim, Novo Nordisk, Sanofi, Takeda, Eli Lilly, Abbott, and Applied Therapeutics. Dr. Rydén has reported receiving lecture fees from the Novo Nordisk Foundation and serving on advisory boards for MSD, Lilly, Boehringer Ingelheim, and AstraZeneca.

A version of this article first appeared on Medscape.com.  
 

Highlights of the European Association for the Study of Diabetes 2022 annual meeting include new data on weight loss with the blockbuster twincretin tirzepatide and on the effects of dapagliflozin on heart failure in people with diabetes, as well as updated guidelines for type 2 diabetes management.

The EASD meeting will take place Sept. 19-23 in Stockholm. It will be the first in-person meeting since 2019 but will also feature live-streamed content for participants around the world.

“The EASD congress will cover all the different areas and aspects of diabetes research – clinical, basic, epidemiologic, and psychological,” EASD President Stefano Del Prato, MD, told this news organization.

What attendees should expect, said Del Prato of the University of Pisa (Italy), “is the pleasure to be able to participate in person at a meeting and get useful information, not only in terms of the knowledge and intellectual aspects of diabetes, but also something that can be implemented the following day in their daily clinical activities.”  

EASD Honorary Secretary Mikael Rydén, MD, added: “I think meeting attendees will really be able to get the absolutely latest developments in all the areas that are relevant to diabetes treatments. It’s the best way to keep yourself up to date.”

This year, in particular, there’s a focus on past, present, and future trends in type 2 diabetes management, along with the co-occurring conditions of obesity, heart failure, and metabolic fatty liver disease.  
 

DELIVER: The diabetes side

On Sept. 22, new data will be presented from the DELIVER trial on the sodium-glucose cotransporter 2 (SGLT2) inhibitor dapagliflozin (Farxiga) in patients with heart failure with preserved ejection fraction, comparing data for participants with diabetes, prediabetes, and normoglycemia.

Primary results from DELIVER were presented Aug. 26 at the European Society of Cardiology Congress 2022 in Barcelona and simultaneously published in the New England Journal of Medicine. The results showed that dapagliflozin benefits patients with heart failure with preserved ejection fraction, as previously demonstrated in those with reduced ejection fraction in the DAPA-HF trial.

“This information is quite important and is becoming of major interest in the field of diabetes,” Dr. Del Prato said, adding that a related joint EASD/ESC symposium will take place the next morning, on Sept. 23, entitled, “New perspectives on heart function and failure in diabetes.”

“So, within the congress, you get the background, pathophysiology, the diagnostic aspects, and the results of the effect of dapagliflozin on those individuals.”

Dr. Rydén commented, “I think this underlines how important it is for diabetologists to screen our patients better for heart failure because we can actually treat them now.”

However, Dr. Rydén of the Karolinska Institute, Stockholm, also cautioned about use of SGLT2 inhibitors in people with diabetes who use insulin, given the risk of euglycemic diabetic ketoacidosis. “These drugs have side effects and you have to be wary who you prescribe them to. For those on multiple daily [insulin] injections, the side effects probably outweigh the benefits.”
 

Tirzepatide, weight loss, and type 2 diabetes remission

On Sept. 21, a symposium will provide new data for the dual glucagonlike peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) agonist tirzepatide, approved for the treatment of type 2 diabetes in the United States in May with the brand name Mounjaro. The agent is now being studied as an obesity treatment.

Data from the SURMOUNT-1 trial presented at the ADA meeting in June showed the drug produced “unprecedented” weight loss of up to 22.5%.

At EASD, those findings will be reviewed and new data presented on morbidity and mortality, along with a new commentary. The degree of weight loss seen with this new twincretin has furthered discussion about the concept of remission in type 2 diabetes, Dr. Rydén noted. That will also be the subject of the Diabetologia symposium on Sept. 21, entitled, “Remission of type 2 diabetes – fact or fiction?”

Regarding tirzepatide, Dr. Rydén said: “It’s amazing, the most powerful antiobesity drug we have at our disposal. These drugs slow gastric emptying and have other beneficial effects. … We’re now closing in on drugs that produce more than 15% weight loss. That appears to be the ‘magic bullet’ where you can achieve type 2 diabetes remission.” He pointed to a symposium sponsored by The Lancet on this topic at last year’s EASD meeting.

“I think what we want with our drugs is not to treat but actually to combat type 2 diabetes and really to achieve remission. Of course, if you’ve had it for many decades that might be impossible, but we know that particularly in the first 5-10 years it’s very important to have good glucose control and we know we can also achieve remission.”

Dr. Del Prato noted the importance of weight reduction at the time of type 2 diabetes diagnosis will be emphasized in the ADA/EASD consensus document on the management of hyperglycemia in type 2 diabetes, to be presented in its final form on Sept. 23.

“I think we’ll be learning more about potential remission in the future, both because of metabolic surgery and agents like tirzepatide. The reduction in body weight that can be achieved [with these newer drugs], or that has been reported so far, is the closest to what can be obtained with metabolic surgery. I think there will be more and more information and a lot of discussion about this, and of course about the definition of remission and what to do after remission has occurred,” Dr. Del Prato said.  

The revised ADA/EASD consensus document is expected to endorse weight loss as a “co-primary goal” of care for those without cardiorenal disease, along with early initiation of combination therapies – for example, taking two drugs immediately upon diagnosis, rather than just metformin – as opposed to the prior stepwise approach. The document will also cover use of newer glucose-lowering therapies, surgery, and behavioral interventions.  

The key is a holistic approach, Dr. Del Prato said. “Of course, glucose control is important, but it’s not the only thing. The heterogeneity of the population with diabetes is also important. Some may already have microvascular complications, kidney dysfunction, are more or less obese, and older or younger. We need to keep these differences in mind to provide more and more individualized treatment.”

Related to that, he noted, will be a joint EASD/ADA symposium on Sept. 19, entitled, “Precision medicine in type 2 diabetes: How far can we get?”
 

COVID-19 and diabetes, UKPDS, type 1 diabetes, and much more

As always, there’s a whole lot more. On Sept. 21, there will be a symposium on COVID-19 and diabetes.

Another, on diabetes technology, has a somewhat cautionary theme: “A new hope (Star Wars) or strange new worlds (Star Trek): Submerging diabetes into emerging technologies.” One of the speakers will address the question: “Are we becoming robots? Automated insulin delivery (AID) systems for everyone with type 1 diabetes: Strengths and limitations.” And this year’s EASD/JDRF symposium topic will be prevention of type 1 diabetes.

Yet another symposium on Sept. 21 will present 44-year follow-up data from the landmark United Kingdom Prospective Diabetes Study (UKPDS), including an economic analysis and a look at dementia outcomes. “It’s a historical thing. This big trial represents a gold mine of information,” Dr. Del Prato commented.

On Sept. 22, new data will be presented for the investigational once-weekly insulins during a symposium entitled, “Re-inventing the insulin experience: Exploring the prospects of once-weekly insulins.”

And lest anyone was thinking of leaving the conference early, there’s a full agenda on Sept. 23, including symposia on diabetic nephropathy, type 1 diabetes, diabetes in old age, dietary management, and the role of primary care, among others. There will also be 12 separate oral presentation sessions that day.

Overall, the meeting will reflect the multidisciplinary direction the field is headed, Dr. Rydén said.

“We’re still in an era of medicine where a lot of things happen every year. Now we have the next generation of drugs that are coming that combine many areas of treatment – obesity, cardiology, and nephrology. So, we’re integrating. The future is integrating the diabetes world with our friends in other areas of clinical medicine.”

Dr. Del Prato has reported being a consultant, advisory board member, and/or lecturer for AstraZeneca, Boehringer Ingelheim, Novo Nordisk, Sanofi, Takeda, Eli Lilly, Abbott, and Applied Therapeutics. Dr. Rydén has reported receiving lecture fees from the Novo Nordisk Foundation and serving on advisory boards for MSD, Lilly, Boehringer Ingelheim, and AstraZeneca.

A version of this article first appeared on Medscape.com.  
 

Highlights of the European Association for the Study of Diabetes 2022 annual meeting include new data on weight loss with the blockbuster twincretin tirzepatide and on the effects of dapagliflozin on heart failure in people with diabetes, as well as updated guidelines for type 2 diabetes management.

The EASD meeting will take place Sept. 19-23 in Stockholm. It will be the first in-person meeting since 2019 but will also feature live-streamed content for participants around the world.

“The EASD congress will cover all the different areas and aspects of diabetes research – clinical, basic, epidemiologic, and psychological,” EASD President Stefano Del Prato, MD, told this news organization.

What attendees should expect, said Del Prato of the University of Pisa (Italy), “is the pleasure to be able to participate in person at a meeting and get useful information, not only in terms of the knowledge and intellectual aspects of diabetes, but also something that can be implemented the following day in their daily clinical activities.”  

EASD Honorary Secretary Mikael Rydén, MD, added: “I think meeting attendees will really be able to get the absolutely latest developments in all the areas that are relevant to diabetes treatments. It’s the best way to keep yourself up to date.”

This year, in particular, there’s a focus on past, present, and future trends in type 2 diabetes management, along with the co-occurring conditions of obesity, heart failure, and metabolic fatty liver disease.  
 

DELIVER: The diabetes side

On Sept. 22, new data will be presented from the DELIVER trial on the sodium-glucose cotransporter 2 (SGLT2) inhibitor dapagliflozin (Farxiga) in patients with heart failure with preserved ejection fraction, comparing data for participants with diabetes, prediabetes, and normoglycemia.

Primary results from DELIVER were presented Aug. 26 at the European Society of Cardiology Congress 2022 in Barcelona and simultaneously published in the New England Journal of Medicine. The results showed that dapagliflozin benefits patients with heart failure with preserved ejection fraction, as previously demonstrated in those with reduced ejection fraction in the DAPA-HF trial.

“This information is quite important and is becoming of major interest in the field of diabetes,” Dr. Del Prato said, adding that a related joint EASD/ESC symposium will take place the next morning, on Sept. 23, entitled, “New perspectives on heart function and failure in diabetes.”

“So, within the congress, you get the background, pathophysiology, the diagnostic aspects, and the results of the effect of dapagliflozin on those individuals.”

Dr. Rydén commented, “I think this underlines how important it is for diabetologists to screen our patients better for heart failure because we can actually treat them now.”

However, Dr. Rydén of the Karolinska Institute, Stockholm, also cautioned about use of SGLT2 inhibitors in people with diabetes who use insulin, given the risk of euglycemic diabetic ketoacidosis. “These drugs have side effects and you have to be wary who you prescribe them to. For those on multiple daily [insulin] injections, the side effects probably outweigh the benefits.”
 

Tirzepatide, weight loss, and type 2 diabetes remission

On Sept. 21, a symposium will provide new data for the dual glucagonlike peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP) agonist tirzepatide, approved for the treatment of type 2 diabetes in the United States in May with the brand name Mounjaro. The agent is now being studied as an obesity treatment.

Data from the SURMOUNT-1 trial presented at the ADA meeting in June showed the drug produced “unprecedented” weight loss of up to 22.5%.

At EASD, those findings will be reviewed and new data presented on morbidity and mortality, along with a new commentary. The degree of weight loss seen with this new twincretin has furthered discussion about the concept of remission in type 2 diabetes, Dr. Rydén noted. That will also be the subject of the Diabetologia symposium on Sept. 21, entitled, “Remission of type 2 diabetes – fact or fiction?”

Regarding tirzepatide, Dr. Rydén said: “It’s amazing, the most powerful antiobesity drug we have at our disposal. These drugs slow gastric emptying and have other beneficial effects. … We’re now closing in on drugs that produce more than 15% weight loss. That appears to be the ‘magic bullet’ where you can achieve type 2 diabetes remission.” He pointed to a symposium sponsored by The Lancet on this topic at last year’s EASD meeting.

“I think what we want with our drugs is not to treat but actually to combat type 2 diabetes and really to achieve remission. Of course, if you’ve had it for many decades that might be impossible, but we know that particularly in the first 5-10 years it’s very important to have good glucose control and we know we can also achieve remission.”

Dr. Del Prato noted the importance of weight reduction at the time of type 2 diabetes diagnosis will be emphasized in the ADA/EASD consensus document on the management of hyperglycemia in type 2 diabetes, to be presented in its final form on Sept. 23.

“I think we’ll be learning more about potential remission in the future, both because of metabolic surgery and agents like tirzepatide. The reduction in body weight that can be achieved [with these newer drugs], or that has been reported so far, is the closest to what can be obtained with metabolic surgery. I think there will be more and more information and a lot of discussion about this, and of course about the definition of remission and what to do after remission has occurred,” Dr. Del Prato said.  

The revised ADA/EASD consensus document is expected to endorse weight loss as a “co-primary goal” of care for those without cardiorenal disease, along with early initiation of combination therapies – for example, taking two drugs immediately upon diagnosis, rather than just metformin – as opposed to the prior stepwise approach. The document will also cover use of newer glucose-lowering therapies, surgery, and behavioral interventions.  

The key is a holistic approach, Dr. Del Prato said. “Of course, glucose control is important, but it’s not the only thing. The heterogeneity of the population with diabetes is also important. Some may already have microvascular complications, kidney dysfunction, are more or less obese, and older or younger. We need to keep these differences in mind to provide more and more individualized treatment.”

Related to that, he noted, will be a joint EASD/ADA symposium on Sept. 19, entitled, “Precision medicine in type 2 diabetes: How far can we get?”
 

COVID-19 and diabetes, UKPDS, type 1 diabetes, and much more

As always, there’s a whole lot more. On Sept. 21, there will be a symposium on COVID-19 and diabetes.

Another, on diabetes technology, has a somewhat cautionary theme: “A new hope (Star Wars) or strange new worlds (Star Trek): Submerging diabetes into emerging technologies.” One of the speakers will address the question: “Are we becoming robots? Automated insulin delivery (AID) systems for everyone with type 1 diabetes: Strengths and limitations.” And this year’s EASD/JDRF symposium topic will be prevention of type 1 diabetes.

Yet another symposium on Sept. 21 will present 44-year follow-up data from the landmark United Kingdom Prospective Diabetes Study (UKPDS), including an economic analysis and a look at dementia outcomes. “It’s a historical thing. This big trial represents a gold mine of information,” Dr. Del Prato commented.

On Sept. 22, new data will be presented for the investigational once-weekly insulins during a symposium entitled, “Re-inventing the insulin experience: Exploring the prospects of once-weekly insulins.”

And lest anyone was thinking of leaving the conference early, there’s a full agenda on Sept. 23, including symposia on diabetic nephropathy, type 1 diabetes, diabetes in old age, dietary management, and the role of primary care, among others. There will also be 12 separate oral presentation sessions that day.

Overall, the meeting will reflect the multidisciplinary direction the field is headed, Dr. Rydén said.

“We’re still in an era of medicine where a lot of things happen every year. Now we have the next generation of drugs that are coming that combine many areas of treatment – obesity, cardiology, and nephrology. So, we’re integrating. The future is integrating the diabetes world with our friends in other areas of clinical medicine.”

Dr. Del Prato has reported being a consultant, advisory board member, and/or lecturer for AstraZeneca, Boehringer Ingelheim, Novo Nordisk, Sanofi, Takeda, Eli Lilly, Abbott, and Applied Therapeutics. Dr. Rydén has reported receiving lecture fees from the Novo Nordisk Foundation and serving on advisory boards for MSD, Lilly, Boehringer Ingelheim, and AstraZeneca.

A version of this article first appeared on Medscape.com.  
 

A new study provides yet more evidence that a significant subset of people who experience persistent fatigue and exercise intolerance following COVID-19 will meet diagnostic criteria for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Data from the prospective observational study of 42 patients with “post-COVID-19 syndrome (PCS),” including persistent fatigue and exercise intolerance, suggest that a large proportion will meet strict diagnostic criteria for ME/CFS, including the hallmark postexertional malaise (PEM). Still others may experience similar disability but lack duration and/or severity requirements for the diagnosis.

Moreover, disease severity and symptom burden were found similar in those with ME/CFS following COVID-19 and in a group of 19 age- and sex-matched individuals with ME/CFS that wasn’t associated with COVID-19.

“The major finding is that ME/CFS is indeed part of the spectrum of the post-COVID syndrome and very similar to the ME/CFS we know after other infectious triggers,” senior author Carmen Scheibenbogen, MD, acting director of the Institute for Medical Immunology at the Charité University Medicine Campus Virchow-Klinikum, Berlin, told this news organization.

Importantly, from a clinical standpoint, both diminished hand-grip strength (HGS) and orthostatic intolerance were common across all patient groups, as were several laboratory values, Claudia Kedor, MD, and colleagues at Charité report in the paper, published online in Nature Communications.

Of the 42 with PCS, including persistent fatigue and exercise intolerance lasting at least 6 months, 19 met the rigorous Canadian Consensus Criteria (CCC) for ME/CFS, established in 2003, which require PEM, along with sleep dysfunction, significant persistent fatigue, pain, and several other symptoms from neurological/cognitive, autonomic, neuroendocrine, and immune categories that persist for at least 6 months.

Of the 23 who did not meet the CCC criteria, 18 still experienced PEM but for less than the required 14 hours set by the authors based on recent data. The original CCC had suggested 24 hours as the PEM duration. Eight subjects met all the Canadian criteria except for the neurological/cognitive symptoms. None of the 42 had evidence of severe depression.

The previously widely used 1994 “Fukuda” criteria for ME/CFS are no longer recommended because they don’t require PEM, which is now considered a key symptom. The more recent 2015 Institute (now Academy) of Medicine criteria don’t define the length of PEM, the authors note in the paper.

Dr. Scheibenbogen said, “Post-COVID has a spectrum of syndromes and conditions. We see that a subset of patients have similar symptoms of ME/CFS but don’t fulfill the CCC, although they may meet less stringent criteria. We think this is of relevance for both diagnostic markers and development of therapy, because there may be different pathomechanisms between the subsets of post-COVID patients.”

She pointed to other studies from her group suggesting that inflammation is present early in post-COVID (not yet published), while in the subset that goes on to ME/CFS, autoantibodies or endothelial dysfunction play a more important role. «At the moment, it’s quite complex, and I don’t think in the end we will have just one pathomechanism. So I think we’ll need to develop various treatment strategies.”

Asked to comment on the new data, Anthony L. Komaroff, MD, professor of medicine at Harvard Medical School, senior physician at Brigham and Women’s Hospital, both in Boston, and editor in chief of the Harvard Health Letter, told this news organization, “This paper adds to the evidence that an illness with symptoms that meet criteria for ME/CFS can follow COVID-19 in nearly half of those patients who have lingering symptoms. This can occur even in people who initially have only mild symptoms from COVID-19, although it is more likely to happen in the people who are sickest when they first get COVID-19. And those who meet criteria for ME/CFS were seriously impaired in their ability to function, [both] at work and at home.”

But, Dr. Komaroff also cautioned, “the study does not help in determining what fraction of all people who are infected with SARS-CoV-2 go on to develop a condition like ME/CFS, nor how long that condition will last. It is crucial that we get answers to these questions, as the impact on the economy, the health care system, and the disability system could be substantial.”

He pointed to a recent report from the Brookings Institution (2022 Aug 24. “New data shows long Covid is keeping as many as 4 million people out of work” Katie Bach) “finding that “long COVID may be a major contributor to the shortage of job applicants plaguing many businesses.”
 

Biomarkers include hand-grip strength, orthostatic intolerance, lab measures

Hand-grip strength, as assessed by 10 repeat grips at maximum force and repeated after 60 minutes, were lower for all those meeting ME/CFS criteria, compared with the healthy controls. Hand-grip strength parameters were also positively correlated with laboratory hemoglobin measures in both PCS groups who did and didn’t meet the Canadian ME/CFS criteria.

A total of three patients with PCS who didn’t meet ME/CFS criteria and seven with PCS who met ME/CFS criteria had sitting blood pressures of greater than 140 mm Hg systolic and/or greater than 90 mm Hg diastolic. Five patients with PCS – four who met ME/CFS criteria and one who didn’t – fulfilled criteria for postural orthostatic tachycardia syndrome. Orthostatic hypotension was diagnosed in a total of seven with PCS, including one who did not meet ME/CFS criteria and the rest who did.

Among significant laboratory findings, mannose-binding lectin deficiency, which is associated with increased infection susceptibility and found in only about 6% of historical controls, was found more frequently in both of the PCS cohorts (17% of those with ME/CFS and 23% of those without) than it has been in the past among those with ME/CFS, compared with historical controls (15%).

There was only slight elevation in C-reactive protein, the most commonly measured marker of inflammation. However, another marker indicating inflammation within the last 3-4 months, interleukin 8 assessed in erythrocytes, was above normal in 37% with PCS and ME/CFS and in 48% with PCS who did not meet the ME/CFS criteria.

Elevated antinuclear antibodies, anti–thyroid peroxidase antibodies, vitamin D deficiencies, and folic acid deficiencies were all seen in small numbers of the PCS patients. Angiotensin-converting enzyme 1 levels were below the normal range in 31% of all patients.

“We must anticipate that this pandemic has the potential to dramatically increase the number of ME/CFS patients,” Dr. Kedor and colleagues write. “At the same time, it offers the unique chance to identify ME/CFS patients in a very early stage of disease and apply interventions such as pacing and coping early with a better therapeutic prognosis. Further, it is an unprecedented opportunity to understand the underlying pathomechanism and characterize targets for specific treatment approaches.”

Dr. Scheibenbogen and Dr. Komaroff reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A new study provides yet more evidence that a significant subset of people who experience persistent fatigue and exercise intolerance following COVID-19 will meet diagnostic criteria for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Data from the prospective observational study of 42 patients with “post-COVID-19 syndrome (PCS),” including persistent fatigue and exercise intolerance, suggest that a large proportion will meet strict diagnostic criteria for ME/CFS, including the hallmark postexertional malaise (PEM). Still others may experience similar disability but lack duration and/or severity requirements for the diagnosis.

Moreover, disease severity and symptom burden were found similar in those with ME/CFS following COVID-19 and in a group of 19 age- and sex-matched individuals with ME/CFS that wasn’t associated with COVID-19.

“The major finding is that ME/CFS is indeed part of the spectrum of the post-COVID syndrome and very similar to the ME/CFS we know after other infectious triggers,” senior author Carmen Scheibenbogen, MD, acting director of the Institute for Medical Immunology at the Charité University Medicine Campus Virchow-Klinikum, Berlin, told this news organization.

Importantly, from a clinical standpoint, both diminished hand-grip strength (HGS) and orthostatic intolerance were common across all patient groups, as were several laboratory values, Claudia Kedor, MD, and colleagues at Charité report in the paper, published online in Nature Communications.

Of the 42 with PCS, including persistent fatigue and exercise intolerance lasting at least 6 months, 19 met the rigorous Canadian Consensus Criteria (CCC) for ME/CFS, established in 2003, which require PEM, along with sleep dysfunction, significant persistent fatigue, pain, and several other symptoms from neurological/cognitive, autonomic, neuroendocrine, and immune categories that persist for at least 6 months.

Of the 23 who did not meet the CCC criteria, 18 still experienced PEM but for less than the required 14 hours set by the authors based on recent data. The original CCC had suggested 24 hours as the PEM duration. Eight subjects met all the Canadian criteria except for the neurological/cognitive symptoms. None of the 42 had evidence of severe depression.

The previously widely used 1994 “Fukuda” criteria for ME/CFS are no longer recommended because they don’t require PEM, which is now considered a key symptom. The more recent 2015 Institute (now Academy) of Medicine criteria don’t define the length of PEM, the authors note in the paper.

Dr. Scheibenbogen said, “Post-COVID has a spectrum of syndromes and conditions. We see that a subset of patients have similar symptoms of ME/CFS but don’t fulfill the CCC, although they may meet less stringent criteria. We think this is of relevance for both diagnostic markers and development of therapy, because there may be different pathomechanisms between the subsets of post-COVID patients.”

She pointed to other studies from her group suggesting that inflammation is present early in post-COVID (not yet published), while in the subset that goes on to ME/CFS, autoantibodies or endothelial dysfunction play a more important role. «At the moment, it’s quite complex, and I don’t think in the end we will have just one pathomechanism. So I think we’ll need to develop various treatment strategies.”

Asked to comment on the new data, Anthony L. Komaroff, MD, professor of medicine at Harvard Medical School, senior physician at Brigham and Women’s Hospital, both in Boston, and editor in chief of the Harvard Health Letter, told this news organization, “This paper adds to the evidence that an illness with symptoms that meet criteria for ME/CFS can follow COVID-19 in nearly half of those patients who have lingering symptoms. This can occur even in people who initially have only mild symptoms from COVID-19, although it is more likely to happen in the people who are sickest when they first get COVID-19. And those who meet criteria for ME/CFS were seriously impaired in their ability to function, [both] at work and at home.”

But, Dr. Komaroff also cautioned, “the study does not help in determining what fraction of all people who are infected with SARS-CoV-2 go on to develop a condition like ME/CFS, nor how long that condition will last. It is crucial that we get answers to these questions, as the impact on the economy, the health care system, and the disability system could be substantial.”

He pointed to a recent report from the Brookings Institution (2022 Aug 24. “New data shows long Covid is keeping as many as 4 million people out of work” Katie Bach) “finding that “long COVID may be a major contributor to the shortage of job applicants plaguing many businesses.”
 

Biomarkers include hand-grip strength, orthostatic intolerance, lab measures

Hand-grip strength, as assessed by 10 repeat grips at maximum force and repeated after 60 minutes, were lower for all those meeting ME/CFS criteria, compared with the healthy controls. Hand-grip strength parameters were also positively correlated with laboratory hemoglobin measures in both PCS groups who did and didn’t meet the Canadian ME/CFS criteria.

A total of three patients with PCS who didn’t meet ME/CFS criteria and seven with PCS who met ME/CFS criteria had sitting blood pressures of greater than 140 mm Hg systolic and/or greater than 90 mm Hg diastolic. Five patients with PCS – four who met ME/CFS criteria and one who didn’t – fulfilled criteria for postural orthostatic tachycardia syndrome. Orthostatic hypotension was diagnosed in a total of seven with PCS, including one who did not meet ME/CFS criteria and the rest who did.

Among significant laboratory findings, mannose-binding lectin deficiency, which is associated with increased infection susceptibility and found in only about 6% of historical controls, was found more frequently in both of the PCS cohorts (17% of those with ME/CFS and 23% of those without) than it has been in the past among those with ME/CFS, compared with historical controls (15%).

There was only slight elevation in C-reactive protein, the most commonly measured marker of inflammation. However, another marker indicating inflammation within the last 3-4 months, interleukin 8 assessed in erythrocytes, was above normal in 37% with PCS and ME/CFS and in 48% with PCS who did not meet the ME/CFS criteria.

Elevated antinuclear antibodies, anti–thyroid peroxidase antibodies, vitamin D deficiencies, and folic acid deficiencies were all seen in small numbers of the PCS patients. Angiotensin-converting enzyme 1 levels were below the normal range in 31% of all patients.

“We must anticipate that this pandemic has the potential to dramatically increase the number of ME/CFS patients,” Dr. Kedor and colleagues write. “At the same time, it offers the unique chance to identify ME/CFS patients in a very early stage of disease and apply interventions such as pacing and coping early with a better therapeutic prognosis. Further, it is an unprecedented opportunity to understand the underlying pathomechanism and characterize targets for specific treatment approaches.”

Dr. Scheibenbogen and Dr. Komaroff reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

A new study provides yet more evidence that a significant subset of people who experience persistent fatigue and exercise intolerance following COVID-19 will meet diagnostic criteria for myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS).

Data from the prospective observational study of 42 patients with “post-COVID-19 syndrome (PCS),” including persistent fatigue and exercise intolerance, suggest that a large proportion will meet strict diagnostic criteria for ME/CFS, including the hallmark postexertional malaise (PEM). Still others may experience similar disability but lack duration and/or severity requirements for the diagnosis.

Moreover, disease severity and symptom burden were found similar in those with ME/CFS following COVID-19 and in a group of 19 age- and sex-matched individuals with ME/CFS that wasn’t associated with COVID-19.

“The major finding is that ME/CFS is indeed part of the spectrum of the post-COVID syndrome and very similar to the ME/CFS we know after other infectious triggers,” senior author Carmen Scheibenbogen, MD, acting director of the Institute for Medical Immunology at the Charité University Medicine Campus Virchow-Klinikum, Berlin, told this news organization.

Importantly, from a clinical standpoint, both diminished hand-grip strength (HGS) and orthostatic intolerance were common across all patient groups, as were several laboratory values, Claudia Kedor, MD, and colleagues at Charité report in the paper, published online in Nature Communications.

Of the 42 with PCS, including persistent fatigue and exercise intolerance lasting at least 6 months, 19 met the rigorous Canadian Consensus Criteria (CCC) for ME/CFS, established in 2003, which require PEM, along with sleep dysfunction, significant persistent fatigue, pain, and several other symptoms from neurological/cognitive, autonomic, neuroendocrine, and immune categories that persist for at least 6 months.

Of the 23 who did not meet the CCC criteria, 18 still experienced PEM but for less than the required 14 hours set by the authors based on recent data. The original CCC had suggested 24 hours as the PEM duration. Eight subjects met all the Canadian criteria except for the neurological/cognitive symptoms. None of the 42 had evidence of severe depression.

The previously widely used 1994 “Fukuda” criteria for ME/CFS are no longer recommended because they don’t require PEM, which is now considered a key symptom. The more recent 2015 Institute (now Academy) of Medicine criteria don’t define the length of PEM, the authors note in the paper.

Dr. Scheibenbogen said, “Post-COVID has a spectrum of syndromes and conditions. We see that a subset of patients have similar symptoms of ME/CFS but don’t fulfill the CCC, although they may meet less stringent criteria. We think this is of relevance for both diagnostic markers and development of therapy, because there may be different pathomechanisms between the subsets of post-COVID patients.”

She pointed to other studies from her group suggesting that inflammation is present early in post-COVID (not yet published), while in the subset that goes on to ME/CFS, autoantibodies or endothelial dysfunction play a more important role. «At the moment, it’s quite complex, and I don’t think in the end we will have just one pathomechanism. So I think we’ll need to develop various treatment strategies.”

Asked to comment on the new data, Anthony L. Komaroff, MD, professor of medicine at Harvard Medical School, senior physician at Brigham and Women’s Hospital, both in Boston, and editor in chief of the Harvard Health Letter, told this news organization, “This paper adds to the evidence that an illness with symptoms that meet criteria for ME/CFS can follow COVID-19 in nearly half of those patients who have lingering symptoms. This can occur even in people who initially have only mild symptoms from COVID-19, although it is more likely to happen in the people who are sickest when they first get COVID-19. And those who meet criteria for ME/CFS were seriously impaired in their ability to function, [both] at work and at home.”

But, Dr. Komaroff also cautioned, “the study does not help in determining what fraction of all people who are infected with SARS-CoV-2 go on to develop a condition like ME/CFS, nor how long that condition will last. It is crucial that we get answers to these questions, as the impact on the economy, the health care system, and the disability system could be substantial.”

He pointed to a recent report from the Brookings Institution (2022 Aug 24. “New data shows long Covid is keeping as many as 4 million people out of work” Katie Bach) “finding that “long COVID may be a major contributor to the shortage of job applicants plaguing many businesses.”
 

Biomarkers include hand-grip strength, orthostatic intolerance, lab measures

Hand-grip strength, as assessed by 10 repeat grips at maximum force and repeated after 60 minutes, were lower for all those meeting ME/CFS criteria, compared with the healthy controls. Hand-grip strength parameters were also positively correlated with laboratory hemoglobin measures in both PCS groups who did and didn’t meet the Canadian ME/CFS criteria.

A total of three patients with PCS who didn’t meet ME/CFS criteria and seven with PCS who met ME/CFS criteria had sitting blood pressures of greater than 140 mm Hg systolic and/or greater than 90 mm Hg diastolic. Five patients with PCS – four who met ME/CFS criteria and one who didn’t – fulfilled criteria for postural orthostatic tachycardia syndrome. Orthostatic hypotension was diagnosed in a total of seven with PCS, including one who did not meet ME/CFS criteria and the rest who did.

Among significant laboratory findings, mannose-binding lectin deficiency, which is associated with increased infection susceptibility and found in only about 6% of historical controls, was found more frequently in both of the PCS cohorts (17% of those with ME/CFS and 23% of those without) than it has been in the past among those with ME/CFS, compared with historical controls (15%).

There was only slight elevation in C-reactive protein, the most commonly measured marker of inflammation. However, another marker indicating inflammation within the last 3-4 months, interleukin 8 assessed in erythrocytes, was above normal in 37% with PCS and ME/CFS and in 48% with PCS who did not meet the ME/CFS criteria.

Elevated antinuclear antibodies, anti–thyroid peroxidase antibodies, vitamin D deficiencies, and folic acid deficiencies were all seen in small numbers of the PCS patients. Angiotensin-converting enzyme 1 levels were below the normal range in 31% of all patients.

“We must anticipate that this pandemic has the potential to dramatically increase the number of ME/CFS patients,” Dr. Kedor and colleagues write. “At the same time, it offers the unique chance to identify ME/CFS patients in a very early stage of disease and apply interventions such as pacing and coping early with a better therapeutic prognosis. Further, it is an unprecedented opportunity to understand the underlying pathomechanism and characterize targets for specific treatment approaches.”

Dr. Scheibenbogen and Dr. Komaroff reported no relevant financial relationships.

A version of this article first appeared on Medscape.com.

Time-restricted eating during the earlier part of the day (eTRE) may promote weight loss and reduce blood pressure, new findings suggest.

Previous studies have produced mixed results regarding the weight-loss potential for intermittent fasting, the practice of alternating eating with extended fasting, and the “time-restricted eating” format, where eating is restricted to a specific, often 10-hour, time window during the day.

In a new randomized clinical trial of 90 people with obesity in which that time window was 7 AM through 3 PM, so 8 hours long, researchers report that “eTRE was more effective for losing weight and lowering diastolic blood pressure than was eating over a period of 12 or more hours at 14 weeks. The eTRE intervention may therefore be an effective treatment for both obesity and hypertension.” The study, by Humaira Jamshed, PhD, of the department of nutrition sciences, University of Alabama at Birmingham, and colleagues, was published in JAMA Internal Medicine.

In an accompanying invited commentary, Shalender Bhasin, MBBS, points out that the study findings differ from those of a previous trial published in April of 139 adults conducted in China, which did not find a significant weight loss benefit with TRE versus ad lib eating.

“The scientific premise and the preclinical data of the effects of TRE are promising, but the inconsistency among studies renders it difficult to draw strong inferences from these well-conducted but relatively small trials,” notes Dr. Bhasin, of Harvard Medical School, Boston.
 

Need for larger and longer trials of TRE

Dr. Bhasin says – and the study authors also acknowledge – that much larger randomized clinical trials of longer duration are needed “to comprehensively evaluate the hypothesized benefits and risks of long-term TRE of calorically restricted diets in adults.”

Commenting on the study for the U.K. Science Media Centre, Simon Steenson, PhD, nutrition scientist, British Nutrition Foundation, said “one of the strengths of this new study is the trial design and the number of people who were recruited compared to many of the previous trials to date.”

However, Dr. Steenson also pointed to the prior Chinese research as evidence that the inconsistencies across studies highlight the need for larger and longer trials, with cardiovascular as well as weight-loss endpoints.

Still, Dr. Steenson said, “For individuals who may find that this pattern of eating fits better with their lifestyle and preferences, time-restricted feeding is one option for reducing overall calorie intake that might be a suitable approach for some. Ultimately, it is about finding the best approach to moderate calorie intake that works for each person, as successful and sustained weight loss is about ensuring the diet is feasible to follow in the long-term.”
 

Differences in weight loss, diastolic BP, but not all measures

The study population included 90 adults seen at the Weight Loss Medicine clinic at the University of Alabama at Birmingham between August 2018 and December 2019. Participants had a body mass index of 30-60 kg/m², and none had diabetes. 

They were randomized to eTRE with the 7 AM to PM eating window or a control schedule with eating across 12 hours or more, mimicking U.S. median mealtimes, at least 6 days a week. All participants received 30-minute weight-loss counseling sessions at baseline and at weeks 2, 6, and 10 and were advised to follow a diet of 500 kcal/day below their resting energy expenditure and exercise 75-150 minutes per week.

The eTRE group adhered with their schedule a mean of 6 days per week, lower than the 6.3 days among controls (P = .03), and adherence declined by about 0.4 days per week in the eTRE group over the 14 weeks (P = .001).  

At 14 weeks, both the eTRE group and controls had lost clinically meaningful amounts of weight, at –6.3 kg and –4.0 kg, respectively, but the –2.3 kg difference was significant (P = .002).

However, there was no difference in absolute fat loss (P = .09) or ratio of fat loss to weight loss (P = .43). There were also no significant differences in changes in other body composition parameters, including visceral fat and waist circumference.

Diastolic blood pressure was lowered by an additional 4 mmHg in the eTRE group, compared with controls at 14 weeks (P = .04), but there were no significant differences in systolic blood pressure, heart rate, glucose, A1c levels, insulin levels, measures of insulin resistance, or plasma lipids.

There were no differences between the two groups in self-reported physical activity, energy intake, or dietary macronutrient composition either. However, weight-loss modeling in 77 participants with at least two weight measurements indicated that the eTRE group reduced their intake by about 214 kcal/day, compared with controls (P = .04).

Those in the eTRE group also showed greater improvements in measures of mood disturbance, vigor-activity, fatigue-inertia, and depression-dejection. Other mood and sleep endpoints were similar between groups.

In a secondary analysis of just the 59 participants who completed the study, eTRE was also more effective at reducing body fat (P = .047) and trunk fat (P = .03).

About 41% of the eTRE completers planned to continue the practice after the study concluded.

The study was supported by grants from the National Center for Advancing Translational Sciences of the National Institutes of Health and the National Institute of Diabetes and Digestive and Kidney Diseases. Dr. Jamshed has reported no relevant financial relationships. Dr. Bhasin has reported receiving grants to his institution for research on which Dr. Bhasin is the principal investigator from AbbVie and MIB, receiving personal fees from OPKO and Aditum and holding equity interest in FPT and XYOne. Dr. Steenson has declared funding in support of the British Nutrition Foundation that comes from a range of sources.

A version of this article first appeared on Medscape.com.

Time-restricted eating during the earlier part of the day (eTRE) may promote weight loss and reduce blood pressure, new findings suggest.

Previous studies have produced mixed results regarding the weight-loss potential for intermittent fasting, the practice of alternating eating with extended fasting, and the “time-restricted eating” format, where eating is restricted to a specific, often 10-hour, time window during the day.

In a new randomized clinical trial of 90 people with obesity in which that time window was 7 AM through 3 PM, so 8 hours long, researchers report that “eTRE was more effective for losing weight and lowering diastolic blood pressure than was eating over a period of 12 or more hours at 14 weeks. The eTRE intervention may therefore be an effective treatment for both obesity and hypertension.” The study, by Humaira Jamshed, PhD, of the department of nutrition sciences, University of Alabama at Birmingham, and colleagues, was published in JAMA Internal Medicine.

In an accompanying invited commentary, Shalender Bhasin, MBBS, points out that the study findings differ from those of a previous trial published in April of 139 adults conducted in China, which did not find a significant weight loss benefit with TRE versus ad lib eating.

“The scientific premise and the preclinical data of the effects of TRE are promising, but the inconsistency among studies renders it difficult to draw strong inferences from these well-conducted but relatively small trials,” notes Dr. Bhasin, of Harvard Medical School, Boston.
 

Need for larger and longer trials of TRE

Dr. Bhasin says – and the study authors also acknowledge – that much larger randomized clinical trials of longer duration are needed “to comprehensively evaluate the hypothesized benefits and risks of long-term TRE of calorically restricted diets in adults.”

Commenting on the study for the U.K. Science Media Centre, Simon Steenson, PhD, nutrition scientist, British Nutrition Foundation, said “one of the strengths of this new study is the trial design and the number of people who were recruited compared to many of the previous trials to date.”

However, Dr. Steenson also pointed to the prior Chinese research as evidence that the inconsistencies across studies highlight the need for larger and longer trials, with cardiovascular as well as weight-loss endpoints.

Still, Dr. Steenson said, “For individuals who may find that this pattern of eating fits better with their lifestyle and preferences, time-restricted feeding is one option for reducing overall calorie intake that might be a suitable approach for some. Ultimately, it is about finding the best approach to moderate calorie intake that works for each person, as successful and sustained weight loss is about ensuring the diet is feasible to follow in the long-term.”
 

Differences in weight loss, diastolic BP, but not all measures

The study population included 90 adults seen at the Weight Loss Medicine clinic at the University of Alabama at Birmingham between August 2018 and December 2019. Participants had a body mass index of 30-60 kg/m², and none had diabetes. 

They were randomized to eTRE with the 7 AM to PM eating window or a control schedule with eating across 12 hours or more, mimicking U.S. median mealtimes, at least 6 days a week. All participants received 30-minute weight-loss counseling sessions at baseline and at weeks 2, 6, and 10 and were advised to follow a diet of 500 kcal/day below their resting energy expenditure and exercise 75-150 minutes per week.

The eTRE group adhered with their schedule a mean of 6 days per week, lower than the 6.3 days among controls (P = .03), and adherence declined by about 0.4 days per week in the eTRE group over the 14 weeks (P = .001).  

At 14 weeks, both the eTRE group and controls had lost clinically meaningful amounts of weight, at –6.3 kg and –4.0 kg, respectively, but the –2.3 kg difference was significant (P = .002).

However, there was no difference in absolute fat loss (P = .09) or ratio of fat loss to weight loss (P = .43). There were also no significant differences in changes in other body composition parameters, including visceral fat and waist circumference.

Diastolic blood pressure was lowered by an additional 4 mmHg in the eTRE group, compared with controls at 14 weeks (P = .04), but there were no significant differences in systolic blood pressure, heart rate, glucose, A1c levels, insulin levels, measures of insulin resistance, or plasma lipids.

There were no differences between the two groups in self-reported physical activity, energy intake, or dietary macronutrient composition either. However, weight-loss modeling in 77 participants with at least two weight measurements indicated that the eTRE group reduced their intake by about 214 kcal/day, compared with controls (P = .04).

Those in the eTRE group also showed greater improvements in measures of mood disturbance, vigor-activity, fatigue-inertia, and depression-dejection. Other mood and sleep endpoints were similar between groups.

In a secondary analysis of just the 59 participants who completed the study, eTRE was also more effective at reducing body fat (P = .047) and trunk fat (P = .03).

About 41% of the eTRE completers planned to continue the practice after the study concluded.

The study was supported by grants from the National Center for Advancing Translational Sciences of the National Institutes of Health and the National Institute of Diabetes and Digestive and Kidney Diseases. Dr. Jamshed has reported no relevant financial relationships. Dr. Bhasin has reported receiving grants to his institution for research on which Dr. Bhasin is the principal investigator from AbbVie and MIB, receiving personal fees from OPKO and Aditum and holding equity interest in FPT and XYOne. Dr. Steenson has declared funding in support of the British Nutrition Foundation that comes from a range of sources.

A version of this article first appeared on Medscape.com.

Time-restricted eating during the earlier part of the day (eTRE) may promote weight loss and reduce blood pressure, new findings suggest.

Previous studies have produced mixed results regarding the weight-loss potential for intermittent fasting, the practice of alternating eating with extended fasting, and the “time-restricted eating” format, where eating is restricted to a specific, often 10-hour, time window during the day.

In a new randomized clinical trial of 90 people with obesity in which that time window was 7 AM through 3 PM, so 8 hours long, researchers report that “eTRE was more effective for losing weight and lowering diastolic blood pressure than was eating over a period of 12 or more hours at 14 weeks. The eTRE intervention may therefore be an effective treatment for both obesity and hypertension.” The study, by Humaira Jamshed, PhD, of the department of nutrition sciences, University of Alabama at Birmingham, and colleagues, was published in JAMA Internal Medicine.

In an accompanying invited commentary, Shalender Bhasin, MBBS, points out that the study findings differ from those of a previous trial published in April of 139 adults conducted in China, which did not find a significant weight loss benefit with TRE versus ad lib eating.

“The scientific premise and the preclinical data of the effects of TRE are promising, but the inconsistency among studies renders it difficult to draw strong inferences from these well-conducted but relatively small trials,” notes Dr. Bhasin, of Harvard Medical School, Boston.
 

Need for larger and longer trials of TRE

Dr. Bhasin says – and the study authors also acknowledge – that much larger randomized clinical trials of longer duration are needed “to comprehensively evaluate the hypothesized benefits and risks of long-term TRE of calorically restricted diets in adults.”

Commenting on the study for the U.K. Science Media Centre, Simon Steenson, PhD, nutrition scientist, British Nutrition Foundation, said “one of the strengths of this new study is the trial design and the number of people who were recruited compared to many of the previous trials to date.”

However, Dr. Steenson also pointed to the prior Chinese research as evidence that the inconsistencies across studies highlight the need for larger and longer trials, with cardiovascular as well as weight-loss endpoints.

Still, Dr. Steenson said, “For individuals who may find that this pattern of eating fits better with their lifestyle and preferences, time-restricted feeding is one option for reducing overall calorie intake that might be a suitable approach for some. Ultimately, it is about finding the best approach to moderate calorie intake that works for each person, as successful and sustained weight loss is about ensuring the diet is feasible to follow in the long-term.”
 

Differences in weight loss, diastolic BP, but not all measures

The study population included 90 adults seen at the Weight Loss Medicine clinic at the University of Alabama at Birmingham between August 2018 and December 2019. Participants had a body mass index of 30-60 kg/m², and none had diabetes. 

They were randomized to eTRE with the 7 AM to PM eating window or a control schedule with eating across 12 hours or more, mimicking U.S. median mealtimes, at least 6 days a week. All participants received 30-minute weight-loss counseling sessions at baseline and at weeks 2, 6, and 10 and were advised to follow a diet of 500 kcal/day below their resting energy expenditure and exercise 75-150 minutes per week.

The eTRE group adhered with their schedule a mean of 6 days per week, lower than the 6.3 days among controls (P = .03), and adherence declined by about 0.4 days per week in the eTRE group over the 14 weeks (P = .001).  

At 14 weeks, both the eTRE group and controls had lost clinically meaningful amounts of weight, at –6.3 kg and –4.0 kg, respectively, but the –2.3 kg difference was significant (P = .002).

However, there was no difference in absolute fat loss (P = .09) or ratio of fat loss to weight loss (P = .43). There were also no significant differences in changes in other body composition parameters, including visceral fat and waist circumference.

Diastolic blood pressure was lowered by an additional 4 mmHg in the eTRE group, compared with controls at 14 weeks (P = .04), but there were no significant differences in systolic blood pressure, heart rate, glucose, A1c levels, insulin levels, measures of insulin resistance, or plasma lipids.

There were no differences between the two groups in self-reported physical activity, energy intake, or dietary macronutrient composition either. However, weight-loss modeling in 77 participants with at least two weight measurements indicated that the eTRE group reduced their intake by about 214 kcal/day, compared with controls (P = .04).

Those in the eTRE group also showed greater improvements in measures of mood disturbance, vigor-activity, fatigue-inertia, and depression-dejection. Other mood and sleep endpoints were similar between groups.

In a secondary analysis of just the 59 participants who completed the study, eTRE was also more effective at reducing body fat (P = .047) and trunk fat (P = .03).

About 41% of the eTRE completers planned to continue the practice after the study concluded.

The study was supported by grants from the National Center for Advancing Translational Sciences of the National Institutes of Health and the National Institute of Diabetes and Digestive and Kidney Diseases. Dr. Jamshed has reported no relevant financial relationships. Dr. Bhasin has reported receiving grants to his institution for research on which Dr. Bhasin is the principal investigator from AbbVie and MIB, receiving personal fees from OPKO and Aditum and holding equity interest in FPT and XYOne. Dr. Steenson has declared funding in support of the British Nutrition Foundation that comes from a range of sources.

A version of this article first appeared on Medscape.com.

People who are severely ill with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) are often too sick to leave home, but clinicians can still support them in many ways, experts say.

Approximately 250,000 people in the United Kingdom (0.2%-0.4%) have ME/CFS – where it’s called “ME.” As many as 2.5 million in the United States have it. Those numbers are expected to dramatically increase with the addition of people with long COVID. An estimated 25% of patients with the condition are so severely impaired that they are housebound or bedbound to the point where they’re unable to attend medical office visits. There are very few data about them because they’re typically unable to participate in studies.

Speaking at the annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (IACFS/ME), patient advocate Helen Baxter, of the U.K. charity 25% ME Group, presented a case series of five patients bedbound with ME/CFS who became severely malnourished because of delays in the placement of feeding tubes. The delays occurred because it was not recognized that the patients were unable to eat. The inability to eat may be due to a variety of factors, including gastrointestinal dysfunction, dysphagia, nausea, or lack of sufficient energy to eat or drink.

A report of those cases was included in a special issue of Healthcare, devoted to the topic of severe and very severe ME/CFS. The issue, which was published in April 2021, included 25 articles on the pathophysiology of severe ME/CFS, ways that clinicians can support patients who are too sick to make office visits, and psychosocial aspects of the condition that result from physical debilitation.

Two additional articles by specialist physicians aim to counter the skepticism about ME/CFS that has long persisted among some in the medical community.

“ME/CFS is under-researched and has historically received insufficient funding for research, particularly when compared to other chronic conditions, such as multiple sclerosis. And most of the research that has been done about it has focused on patients who are able to attend clinics. Patients with severe ME/CFS have largely been excluded from research due to the severity of their illness and are often described as ‘hard to reach.’ Consequently, research into severe ME is very limited,” Ms. Baxter said.

Asked to comment, Lucinda Bateman, MD, founder and director of the Bateman Horne Center, Salt Lake City, told this news organization, “It’s a big gap, even in the knowledgeable community. The research is totally skewed towards people who can get up and go participate in research. ... I don’t think most clinicians have any idea how sick people can get with ME/CFS.”

Cardiopulmonary exercise testing (CPET), which is commonly used in research, is intended to elicit objective biomarker responses. Such testing, which is considered the gold standard for determining disability, is impossible for the most severely ill patients with ME/CFS and is potentially harmful to these patients because of the hallmark postexertional malaise (PEM) phenomenon, Dr. Bateman noted.

“If we want to use CPET for research, we have to remember that it harms people to some degree and that we’re only studying the people who aren’t as sick. ... It’s one of the reasons I’ve been aggressively pursuing medical education about orthostatic testing, because it’s a clear objective marker, not as deleterious, and potentially leads to treatment options,” she said.

Misdiagnosis, treatment delays led to life-threatening malnutrition

The five patients that Ms. Baxter presented had become severely malnourished and dehydrated. There was evidence of clinical inertia for each of them.

“All were judged to have anorexia nervosa, and psychiatrists were involved, which was an added delay to starting tube feeding. ... In each case, the doctors resorted to making inappropriate psychological diagnoses without positive evidence of psychopathology, failing to recognize the significance of the malnutrition,” Ms. Baxter said. (Urgent tube feeding would have been warranted even had anorexia nervosa been the correct diagnosis, she pointed out.)

Once the problem was finally recognized, “all participants saw an improvement in their situation following the allocation of a home enteral nutrition dietician.”

At the IACFS/ME conference, Ms. Baxter described the painstaking methods used for gathering information, which were described in the same journal. These involved a combination of online, telephone, and text communications with patients or their caregivers. Efforts were made to avoid overtaxing the patients and triggering PEM.

“An early warning system needs to be put in place for patients with severe ME so that when they or their representatives become aware of the development of problems with oral intake, prompt action is taken, and tube feeding started, thereby avoiding undernutrition in patients with very severe ME,” Ms. Baxter and colleagues write.

Indeed, coauthor and semiretired pediatric ME/CFS specialist physician Nigel Speight, of Durham, United Kingdom, said in an interview, “In most of my patients, I used tube feeding early simply to avoid using unnecessary energy and causing stress to the patient.”

Dr. Speight added, “Patients can also die from sheer weakness leading to lack of respiratory drive. Also, and very understandably, some commit suicide.”
 

Caring for the patient with severe or very severe ME/CFS

Appearing in the special issue is an article entitled, “Caring for the Patient with Severe or Very Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome”. It was authored by a multidisciplinary group led by Jose G. Montoya, MD, of the Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Calif.

In that article, four levels of severity are defined: mild, moderate, severe, and very severe. Included in the “severe” category are patients who are mostly homebound and whose activities of daily living are limited. They may have severe cognitive difficulties. Patients in the “very severe” caregory are bedbound and are unable to care for themselves.

Clinical features include more extreme versions of the core ME/CFS criteria: profound fatigue/weakness, PEM, unrefreshing sleep, orthostatic intolerance, and cognitive impairment. Additional symptoms in those with severe/very severe ME can include extreme hypersensitivity to light, sound, touch, and/or odors. Even small amounts of physical, mental, emotional, and orthostatic stressors can trigger PEM and increased weakness.

The authors recommend a “patient-centered, collaborative approach that is grounded in compassion and respect for the patient in all interactions,” and they provide lists of steps providers can take. These include seeing patients at home if possible and considerations regarding that care, such as partnering with the patient’s caregivers and other health care providers, who may include physical and occupational therapists, home health nurses, and social workers who understand the condition. Home visits by optometrists or ophthalmologists and dentists may be required.

Documenting limitations in activities of daily living is particularly important for helping patients to obtain homecare and disability benefits, Dr. Montoya and colleagues say.

Clinicians should investigate any medical problems that may be amenable to treatment, including orthostatic intolerance, pain, sleep difficulties, comorbidities, or gastrointestinal problems. For patients with pain, bloating, and diarrhea who are found on assessment to have mast cell activation disorder (MCAD), a trial of sodium cromoglicate may be tried, Ms. Baxter told this news organization.

Nonmedical problems that may be contributing to the patient’s morbidity should also be assessed, including a lack of caretaking, social services, transportation, food, and/or supportive devices, such as wheelchairs, bedpans, feeding tubes, and catheters.

The article provides additional detailed recommendations regarding pharmacologic treatments, follow-up visits – in-person or virtual – and hospitalization, as well as recommendations for energy conservation and management.

A section titled Practical Considerations for Busy Providers includes advice to be aware of any regulatory or insurance requirements for providing home visits and to maximize reimbursement by diagnosing any comorbidities, such as postural orthostatic tachycardia syndrome, Ehlers-Danlos syndrome, or MCAD.

Dr. Speight, who authored an article in the special issue on the management of ME in children, called the article by Dr. Montoya and colleagues “absolutely excellent,” and added his own advice, which included not “overinvestigating to cover your back but at the expense of causing stress to the patient” and considering a trial of immunoglobulin.

Importantly, Dr. Speight stressed, “avoid referral to psychiatrists unless specifically indicated for additional psychiatric morbidity; in which case, make clear that the psychiatrist accepts [that the] basic illness is medical.”

He also advised that clinicians stop using the term “chronic fatigue syndrome” because it suggests the illness is mild and/or psychosomatic. “Maybe the United States should embrace the term ME once and for all,” he said.

Dr. Baxter, Dr. Speight, and Dr. Montoya have disclosed no relevant financial relationships. Dr. Bateman is conducting research for Terra Biological.

A version of this article first appeared on Medscape.com.

People who are severely ill with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) are often too sick to leave home, but clinicians can still support them in many ways, experts say.

Approximately 250,000 people in the United Kingdom (0.2%-0.4%) have ME/CFS – where it’s called “ME.” As many as 2.5 million in the United States have it. Those numbers are expected to dramatically increase with the addition of people with long COVID. An estimated 25% of patients with the condition are so severely impaired that they are housebound or bedbound to the point where they’re unable to attend medical office visits. There are very few data about them because they’re typically unable to participate in studies.

Speaking at the annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (IACFS/ME), patient advocate Helen Baxter, of the U.K. charity 25% ME Group, presented a case series of five patients bedbound with ME/CFS who became severely malnourished because of delays in the placement of feeding tubes. The delays occurred because it was not recognized that the patients were unable to eat. The inability to eat may be due to a variety of factors, including gastrointestinal dysfunction, dysphagia, nausea, or lack of sufficient energy to eat or drink.

A report of those cases was included in a special issue of Healthcare, devoted to the topic of severe and very severe ME/CFS. The issue, which was published in April 2021, included 25 articles on the pathophysiology of severe ME/CFS, ways that clinicians can support patients who are too sick to make office visits, and psychosocial aspects of the condition that result from physical debilitation.

Two additional articles by specialist physicians aim to counter the skepticism about ME/CFS that has long persisted among some in the medical community.

“ME/CFS is under-researched and has historically received insufficient funding for research, particularly when compared to other chronic conditions, such as multiple sclerosis. And most of the research that has been done about it has focused on patients who are able to attend clinics. Patients with severe ME/CFS have largely been excluded from research due to the severity of their illness and are often described as ‘hard to reach.’ Consequently, research into severe ME is very limited,” Ms. Baxter said.

Asked to comment, Lucinda Bateman, MD, founder and director of the Bateman Horne Center, Salt Lake City, told this news organization, “It’s a big gap, even in the knowledgeable community. The research is totally skewed towards people who can get up and go participate in research. ... I don’t think most clinicians have any idea how sick people can get with ME/CFS.”

Cardiopulmonary exercise testing (CPET), which is commonly used in research, is intended to elicit objective biomarker responses. Such testing, which is considered the gold standard for determining disability, is impossible for the most severely ill patients with ME/CFS and is potentially harmful to these patients because of the hallmark postexertional malaise (PEM) phenomenon, Dr. Bateman noted.

“If we want to use CPET for research, we have to remember that it harms people to some degree and that we’re only studying the people who aren’t as sick. ... It’s one of the reasons I’ve been aggressively pursuing medical education about orthostatic testing, because it’s a clear objective marker, not as deleterious, and potentially leads to treatment options,” she said.

Misdiagnosis, treatment delays led to life-threatening malnutrition

The five patients that Ms. Baxter presented had become severely malnourished and dehydrated. There was evidence of clinical inertia for each of them.

“All were judged to have anorexia nervosa, and psychiatrists were involved, which was an added delay to starting tube feeding. ... In each case, the doctors resorted to making inappropriate psychological diagnoses without positive evidence of psychopathology, failing to recognize the significance of the malnutrition,” Ms. Baxter said. (Urgent tube feeding would have been warranted even had anorexia nervosa been the correct diagnosis, she pointed out.)

Once the problem was finally recognized, “all participants saw an improvement in their situation following the allocation of a home enteral nutrition dietician.”

At the IACFS/ME conference, Ms. Baxter described the painstaking methods used for gathering information, which were described in the same journal. These involved a combination of online, telephone, and text communications with patients or their caregivers. Efforts were made to avoid overtaxing the patients and triggering PEM.

“An early warning system needs to be put in place for patients with severe ME so that when they or their representatives become aware of the development of problems with oral intake, prompt action is taken, and tube feeding started, thereby avoiding undernutrition in patients with very severe ME,” Ms. Baxter and colleagues write.

Indeed, coauthor and semiretired pediatric ME/CFS specialist physician Nigel Speight, of Durham, United Kingdom, said in an interview, “In most of my patients, I used tube feeding early simply to avoid using unnecessary energy and causing stress to the patient.”

Dr. Speight added, “Patients can also die from sheer weakness leading to lack of respiratory drive. Also, and very understandably, some commit suicide.”
 

Caring for the patient with severe or very severe ME/CFS

Appearing in the special issue is an article entitled, “Caring for the Patient with Severe or Very Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome”. It was authored by a multidisciplinary group led by Jose G. Montoya, MD, of the Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Calif.

In that article, four levels of severity are defined: mild, moderate, severe, and very severe. Included in the “severe” category are patients who are mostly homebound and whose activities of daily living are limited. They may have severe cognitive difficulties. Patients in the “very severe” caregory are bedbound and are unable to care for themselves.

Clinical features include more extreme versions of the core ME/CFS criteria: profound fatigue/weakness, PEM, unrefreshing sleep, orthostatic intolerance, and cognitive impairment. Additional symptoms in those with severe/very severe ME can include extreme hypersensitivity to light, sound, touch, and/or odors. Even small amounts of physical, mental, emotional, and orthostatic stressors can trigger PEM and increased weakness.

The authors recommend a “patient-centered, collaborative approach that is grounded in compassion and respect for the patient in all interactions,” and they provide lists of steps providers can take. These include seeing patients at home if possible and considerations regarding that care, such as partnering with the patient’s caregivers and other health care providers, who may include physical and occupational therapists, home health nurses, and social workers who understand the condition. Home visits by optometrists or ophthalmologists and dentists may be required.

Documenting limitations in activities of daily living is particularly important for helping patients to obtain homecare and disability benefits, Dr. Montoya and colleagues say.

Clinicians should investigate any medical problems that may be amenable to treatment, including orthostatic intolerance, pain, sleep difficulties, comorbidities, or gastrointestinal problems. For patients with pain, bloating, and diarrhea who are found on assessment to have mast cell activation disorder (MCAD), a trial of sodium cromoglicate may be tried, Ms. Baxter told this news organization.

Nonmedical problems that may be contributing to the patient’s morbidity should also be assessed, including a lack of caretaking, social services, transportation, food, and/or supportive devices, such as wheelchairs, bedpans, feeding tubes, and catheters.

The article provides additional detailed recommendations regarding pharmacologic treatments, follow-up visits – in-person or virtual – and hospitalization, as well as recommendations for energy conservation and management.

A section titled Practical Considerations for Busy Providers includes advice to be aware of any regulatory or insurance requirements for providing home visits and to maximize reimbursement by diagnosing any comorbidities, such as postural orthostatic tachycardia syndrome, Ehlers-Danlos syndrome, or MCAD.

Dr. Speight, who authored an article in the special issue on the management of ME in children, called the article by Dr. Montoya and colleagues “absolutely excellent,” and added his own advice, which included not “overinvestigating to cover your back but at the expense of causing stress to the patient” and considering a trial of immunoglobulin.

Importantly, Dr. Speight stressed, “avoid referral to psychiatrists unless specifically indicated for additional psychiatric morbidity; in which case, make clear that the psychiatrist accepts [that the] basic illness is medical.”

He also advised that clinicians stop using the term “chronic fatigue syndrome” because it suggests the illness is mild and/or psychosomatic. “Maybe the United States should embrace the term ME once and for all,” he said.

Dr. Baxter, Dr. Speight, and Dr. Montoya have disclosed no relevant financial relationships. Dr. Bateman is conducting research for Terra Biological.

A version of this article first appeared on Medscape.com.

People who are severely ill with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) are often too sick to leave home, but clinicians can still support them in many ways, experts say.

Approximately 250,000 people in the United Kingdom (0.2%-0.4%) have ME/CFS – where it’s called “ME.” As many as 2.5 million in the United States have it. Those numbers are expected to dramatically increase with the addition of people with long COVID. An estimated 25% of patients with the condition are so severely impaired that they are housebound or bedbound to the point where they’re unable to attend medical office visits. There are very few data about them because they’re typically unable to participate in studies.

Speaking at the annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (IACFS/ME), patient advocate Helen Baxter, of the U.K. charity 25% ME Group, presented a case series of five patients bedbound with ME/CFS who became severely malnourished because of delays in the placement of feeding tubes. The delays occurred because it was not recognized that the patients were unable to eat. The inability to eat may be due to a variety of factors, including gastrointestinal dysfunction, dysphagia, nausea, or lack of sufficient energy to eat or drink.

A report of those cases was included in a special issue of Healthcare, devoted to the topic of severe and very severe ME/CFS. The issue, which was published in April 2021, included 25 articles on the pathophysiology of severe ME/CFS, ways that clinicians can support patients who are too sick to make office visits, and psychosocial aspects of the condition that result from physical debilitation.

Two additional articles by specialist physicians aim to counter the skepticism about ME/CFS that has long persisted among some in the medical community.

“ME/CFS is under-researched and has historically received insufficient funding for research, particularly when compared to other chronic conditions, such as multiple sclerosis. And most of the research that has been done about it has focused on patients who are able to attend clinics. Patients with severe ME/CFS have largely been excluded from research due to the severity of their illness and are often described as ‘hard to reach.’ Consequently, research into severe ME is very limited,” Ms. Baxter said.

Asked to comment, Lucinda Bateman, MD, founder and director of the Bateman Horne Center, Salt Lake City, told this news organization, “It’s a big gap, even in the knowledgeable community. The research is totally skewed towards people who can get up and go participate in research. ... I don’t think most clinicians have any idea how sick people can get with ME/CFS.”

Cardiopulmonary exercise testing (CPET), which is commonly used in research, is intended to elicit objective biomarker responses. Such testing, which is considered the gold standard for determining disability, is impossible for the most severely ill patients with ME/CFS and is potentially harmful to these patients because of the hallmark postexertional malaise (PEM) phenomenon, Dr. Bateman noted.

“If we want to use CPET for research, we have to remember that it harms people to some degree and that we’re only studying the people who aren’t as sick. ... It’s one of the reasons I’ve been aggressively pursuing medical education about orthostatic testing, because it’s a clear objective marker, not as deleterious, and potentially leads to treatment options,” she said.

Misdiagnosis, treatment delays led to life-threatening malnutrition

The five patients that Ms. Baxter presented had become severely malnourished and dehydrated. There was evidence of clinical inertia for each of them.

“All were judged to have anorexia nervosa, and psychiatrists were involved, which was an added delay to starting tube feeding. ... In each case, the doctors resorted to making inappropriate psychological diagnoses without positive evidence of psychopathology, failing to recognize the significance of the malnutrition,” Ms. Baxter said. (Urgent tube feeding would have been warranted even had anorexia nervosa been the correct diagnosis, she pointed out.)

Once the problem was finally recognized, “all participants saw an improvement in their situation following the allocation of a home enteral nutrition dietician.”

At the IACFS/ME conference, Ms. Baxter described the painstaking methods used for gathering information, which were described in the same journal. These involved a combination of online, telephone, and text communications with patients or their caregivers. Efforts were made to avoid overtaxing the patients and triggering PEM.

“An early warning system needs to be put in place for patients with severe ME so that when they or their representatives become aware of the development of problems with oral intake, prompt action is taken, and tube feeding started, thereby avoiding undernutrition in patients with very severe ME,” Ms. Baxter and colleagues write.

Indeed, coauthor and semiretired pediatric ME/CFS specialist physician Nigel Speight, of Durham, United Kingdom, said in an interview, “In most of my patients, I used tube feeding early simply to avoid using unnecessary energy and causing stress to the patient.”

Dr. Speight added, “Patients can also die from sheer weakness leading to lack of respiratory drive. Also, and very understandably, some commit suicide.”
 

Caring for the patient with severe or very severe ME/CFS

Appearing in the special issue is an article entitled, “Caring for the Patient with Severe or Very Severe Myalgic Encephalomyelitis/Chronic Fatigue Syndrome”. It was authored by a multidisciplinary group led by Jose G. Montoya, MD, of the Jack S. Remington Laboratory for Specialty Diagnostics, Palo Alto Medical Foundation, Calif.

In that article, four levels of severity are defined: mild, moderate, severe, and very severe. Included in the “severe” category are patients who are mostly homebound and whose activities of daily living are limited. They may have severe cognitive difficulties. Patients in the “very severe” caregory are bedbound and are unable to care for themselves.

Clinical features include more extreme versions of the core ME/CFS criteria: profound fatigue/weakness, PEM, unrefreshing sleep, orthostatic intolerance, and cognitive impairment. Additional symptoms in those with severe/very severe ME can include extreme hypersensitivity to light, sound, touch, and/or odors. Even small amounts of physical, mental, emotional, and orthostatic stressors can trigger PEM and increased weakness.

The authors recommend a “patient-centered, collaborative approach that is grounded in compassion and respect for the patient in all interactions,” and they provide lists of steps providers can take. These include seeing patients at home if possible and considerations regarding that care, such as partnering with the patient’s caregivers and other health care providers, who may include physical and occupational therapists, home health nurses, and social workers who understand the condition. Home visits by optometrists or ophthalmologists and dentists may be required.

Documenting limitations in activities of daily living is particularly important for helping patients to obtain homecare and disability benefits, Dr. Montoya and colleagues say.

Clinicians should investigate any medical problems that may be amenable to treatment, including orthostatic intolerance, pain, sleep difficulties, comorbidities, or gastrointestinal problems. For patients with pain, bloating, and diarrhea who are found on assessment to have mast cell activation disorder (MCAD), a trial of sodium cromoglicate may be tried, Ms. Baxter told this news organization.

Nonmedical problems that may be contributing to the patient’s morbidity should also be assessed, including a lack of caretaking, social services, transportation, food, and/or supportive devices, such as wheelchairs, bedpans, feeding tubes, and catheters.

The article provides additional detailed recommendations regarding pharmacologic treatments, follow-up visits – in-person or virtual – and hospitalization, as well as recommendations for energy conservation and management.

A section titled Practical Considerations for Busy Providers includes advice to be aware of any regulatory or insurance requirements for providing home visits and to maximize reimbursement by diagnosing any comorbidities, such as postural orthostatic tachycardia syndrome, Ehlers-Danlos syndrome, or MCAD.

Dr. Speight, who authored an article in the special issue on the management of ME in children, called the article by Dr. Montoya and colleagues “absolutely excellent,” and added his own advice, which included not “overinvestigating to cover your back but at the expense of causing stress to the patient” and considering a trial of immunoglobulin.

Importantly, Dr. Speight stressed, “avoid referral to psychiatrists unless specifically indicated for additional psychiatric morbidity; in which case, make clear that the psychiatrist accepts [that the] basic illness is medical.”

He also advised that clinicians stop using the term “chronic fatigue syndrome” because it suggests the illness is mild and/or psychosomatic. “Maybe the United States should embrace the term ME once and for all,” he said.

Dr. Baxter, Dr. Speight, and Dr. Montoya have disclosed no relevant financial relationships. Dr. Bateman is conducting research for Terra Biological.

A version of this article first appeared on Medscape.com.

Emerging evidence is shedding light on the common underlying mechanisms contributing to the overlapping clinical phenomena of “long COVID,” myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), and dysautonomia.

At the virtual annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (IACFSME), speakers presented data showing similar pathophysiologic abnormalities in people with systemic symptoms associated with ME/CFS who had a prior SARS-CoV-2 infection and those who did not, including individuals whose illness preceded the COVID-19 pandemic.

Core clinical diagnostic criteria for ME/CFS established by the Institute of Medicine in 2015 include substantial decrement in functioning for 6 months or longer, postexertional malaise, or a worsening of symptoms following even minor exertion (often described by patients as “crashes”), unrefreshing sleep, and cognitive dysfunction and/or orthostatic intolerance that are frequent and severe.

Long COVID has been defined in several different ways using different terminology. The U.S. Centers for Disease Control and Prevention, for example, defines “post-COVID conditions” as those continuing four or more weeks beyond first symptoms. The World Health Organization’s clinical case definition of “post COVID-19 condition” includes otherwise unexplained symptoms 3 months from COVID-19 onset and lasting longer than 2 months.

Both ME/CFS and long COVID commonly involve numerous symptoms beyond the defining ones, affecting nearly every organ system in the body, including systemic, neurocognitive, endocrine, cardiovascular, pulmonary, musculoskeletal, and gastrointestinal, with wide variation among individuals. Autonomic dysfunction is common to both conditions, particularly postural orthostatic tachycardia syndrome (POTS).

“My way of understanding these illnesses is that they’re not just multisystem illnesses, but all these interactive systems that lean on each other are dysregulated. … I would say that a very common underlying mediator of both ME/CFS and long COVID is autonomic dysfunction, and it presents as POTS,” Nancy Klimas, MD, director of the Institute for Neuro-Immune Medicine at Nova Southeastern University, Fort Lauderdale, Fla., told this news organization.

Dr. Klimas, who is also director of Clinical Immunology Research at the Miami Veterans Affairs Medical Center, added that “if basic bioenergetics are disrupted and in an oxidative-stress state [then] they have downregulated energy production at the cellular level, which seems to be the case in ME/CFS and now in long COVID.”
 

New ICD-10 codes better characterize the syndromes

New ICD-10 codes for 2023, being implemented on Oct. 1, will enable clinicians to better document all of these interrelated conditions.

Under the existing G93.3, Postviral and related fatigue syndromes, there will now be:

• G93.31 – Postviral fatigue syndrome.
• G93.32 – Myalgic encephalomyelitis/chronic fatigue syndrome (and the separate terms).
• G93.39 – Other postinfection and related fatigue syndromes.

The old R53.82, “Chronic fatigue, unspecified” code now excludes all of the above conditions.

The additional code U09.9 for “post COVID-19 condition, unspecified,” may also be used if applicable.

In addition, a new code for POTS, G90.A, which wasn’t previously mentioned in ICD-10, may also be used starting Oct. 1.

Lucinda Bateman, MD, founder and director of the Bateman Horne Center, Salt Lake City, advises using all applicable codes for a given patient. “If a patient came into my office with long COVID and met criteria for ME/CFS, we would code both, and also any other syndrome criteria that they may meet, such as POTS or fibromyalgia.

“If people use the codes appropriately, then you can understand the overlap better. It increases the likelihood of reimbursement, creates a more accurate medical record for the patient, and provides them with a better tool should they require disability benefits.”

Dr. Bateman advises in-office orthostatic evaluation for all patients with this symptom constellation, using a passive standing evaluation such as the 10-minute NASA Lean test.

“Clinicians should take the time to do orthostatic testing in these patients because it provides objective markers and will help lead us to potential interventions to help improve people’s function.”

The Bateman Horne center offers clinician resources on management of ME/CFS and related conditions.
 

How common is ME/CFS after COVID-19?

According to one published meta-analysis, the global prevalence of “post-acute sequelae of SARS-CoV-2,” defined by any symptom, is about 43% of patients overall following infection, and 49% at 120 days. Fatigue was the most commonly reported symptom, followed by memory problems. As of March 22, the World Health Organization estimated that there have been more than 470 million COVID-19 cases, which would give a figure of about 200 million people who are experiencing a wide range of long-COVID symptoms. 

On the final day of the IACFSME conference, Luis Nacul, MD, of the University of British Columbia, Vancouver, presented several sets of data from his group and others aiming to determine the proportion of individuals who develop symptoms suggestive of ME/CFS following a COVID-19 infection.   

Among a cohort of 88 adults hospitalized with confirmed SARS-CoV-2 infections during the first pandemic wave in 2020 and followed up in the respiratory clinic, rates of reported generalized fatigue were 67% at 3 months and 59.5% at 6 months. Substantial fatigue (that is, present most days and affecting activity levels) were reported by 16% at 3 months and 7% at 6 months. “This should represent in principle the maximum prevalence of cases who would meet the criteria for ME/CFS,” Dr. Nacul said.

Baseline age was indirectly associated with fatigue at 3 and 6 months, while the number of comorbidities a patient had was directly associated. Comorbidities also predicted severe fatigue at 3 months, but the numbers were too small for assessment at 6 months.

Studies involving nonhospitalized patients suggested lower rates. One meta-analysis showed 1-year rates of fatigue in 32% and cognitive impairment in 22%. Another showed very similar rates, reporting fatigue in 28% and memory/concentration difficulties in 18%-19%.   

Dr. Nacul cautioned that these figures are likely overestimates since many of the study populations are taken from respiratory or long-COVID clinics. “The evidence on ‘post-COVID fatigue syndrome’ or ME/CFS following COVID is still evolving. There is a huge need for studies looking more closely at cases meeting well-defined ME/CFS criteria. This unfortunately hasn’t been done for most studies.”
 

Immune system dysfunction appears to underlie many cases

In a keynote address during the conference, Akiko Iwasaki, PhD, of Yale University, New Haven, Conn., pointed out that long COVID and ME/CFS are among many unexplained postacute infection syndromes associated with a long list of viral pathogens, including Ebola, the prior SARS viruses, Epstein-Barr virus, and Dengue, as well as nonviral pathogens such as Coxiella burnetii (Q fever syndrome) and Borrelia (posttreatment Lyme disease syndrome).

Dr. Iwasaki cited a recent Nature Medicine review article that she coauthored on this topic with an ME/CFS patient, noting: “We really need to understand why some people are failing to recover from these types of diseases.”

Emerging evidence supports four different hypotheses regarding pathogenesis: viral reservoir/viral pathogen-associated molecular pattern molecules, autoimmunity, dysbiosis/viral reactivation, and tissue damage

“Right now, it’s too early to exclude or make any conclusions about these. We need to have an open mind to dissect these various possibilities,” she said.

Two speakers reported findings of immune dysregulation in both ME/CFS and long COVID. Wakiro Sato, MD, PhD, of the National Center of Neurology and Psychiatry, Tokyo, reported that anti–G-protein coupled receptor antibodies were found in 33 (55%) of 60 patients with long COVID, and more than 40% had peripheral immune cell profile abnormalities. These findings were similar to those found in patients with ME/CFS, published by Sato’s team (Brain Behav Immun. 2021 Mar 29. doi: 10.1016/j.bbi.2021.03.023) and other researchers in Germany.  

Liisa K. Selin, MD, PhD, professor of pathology at the University of Massachusetts, Worcester, presented data for an analysis of peripheral blood mononuclear cells from 26 donors with ME/CFS (8 with long COVID) and 24 healthy controls. In both patient groups, they found altered expression of inflammatory markers and decreases in CD8 T-cell number and function. The patients with long COVID showed evidence of sustained activation of both T-cell populations with increased CD38 and HLA-DR, associated with a compensatory increased frequency of activated CD4+CD8+ T cells.

“These results are consistent with immune dysregulation associated with overactivation and exhaustion of CD8 T cells, as observed in chronic viral infections and tumor environments,” Dr. Selin said.
 

ME/CFS and long COVID ‘frighteningly similar, if not identical’

Data for a different system derangement in long COVID and ME/CFS, the pathophysiology of exercise intolerance, were presented in another keynote talk by David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital and director of the Massachusetts General Hospital cardiopulmonary laboratory, both in Boston. He has conducted invasive cardiopulmonary exercise testing in patients with ME/CFS and patients with long COVID.

Previously, Dr. Systrom and his team found that patients with ME/CFS have distinct defects in both ventricular filling pressure and oxygen extraction from the muscles. Neither of those are features of deconditioning, which is often blamed for exercise intolerance in people with ME/CFS. Rather, the major defect in deconditioning is decreased stroke volume and cardiac output. In ME/CFS patients, he found supranormal pulmonary blood flow, compared with VO₂ max, suggesting peripheral left-to-right shunting.

In addition, Dr. Systrom and colleagues found that a large proportion of ME/CFS patients with these peripheral vascular defects also have biopsy-demonstrated small-fiber neuropathy, suggesting that acute exercise intolerance is related to underlying autonomic nervous system dysfunction.

In Dr. Systrom and colleagues’ long COVID study, invasive cardiopulmonary exercise testing in 10 patients who had recovered from COVID-19 at least 6 months prior and did not have cardiopulmonary disease had significantly revealed reduced peak exercise aerobic capacity (VO₂ max), compared with 10 age- and sex-matched controls. The reduction in peak VO₂ was associated with impaired systemic oxygen extraction, compared with the controls, despite a preserved peak cardiac index.

The long-COVID patients also showed greater ventilatory inefficiency, which “is entirely related to hyperventilation, not intrinsic lung disease,” Dr. Systrom said, adding that while there may be subsets of patients with interstitial lung disease after acute respiratory distress syndrome, these patients didn’t have that. “This for all the world looks like ME/CFS. We think they are frighteningly similar, if not identical,” Dr. Systrom said.  

In a third study for which Dr. Systrom was a coauthor, published in Annals of Neurology, multisystem involvement was found in nine patients following mild COVID-19 infection, using standardized autonomic assessments including Valsalva maneuver, sudomotor and tilt tests, and skin biopsies for small-fiber neuropathy. The findings included cerebrovascular dysregulation with persistent cerebral arteriolar vasoconstriction, small-fiber neuropathy and related dysautonomia, respiratory dysregulation, and chronic inflammation.

Dr. Systrom’s conclusion: “Dyspnea and hyperventilation are common in ME/CFS and long COVID and there is significant overlap with POTS.”

Dr. Bateman disclosed that she is conducting research for Terra Biological. Dr. Systrom said he is conducting research for Astellas.

A version of this article first appeared on Medscape.com.

Emerging evidence is shedding light on the common underlying mechanisms contributing to the overlapping clinical phenomena of “long COVID,” myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), and dysautonomia.

At the virtual annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (IACFSME), speakers presented data showing similar pathophysiologic abnormalities in people with systemic symptoms associated with ME/CFS who had a prior SARS-CoV-2 infection and those who did not, including individuals whose illness preceded the COVID-19 pandemic.

Core clinical diagnostic criteria for ME/CFS established by the Institute of Medicine in 2015 include substantial decrement in functioning for 6 months or longer, postexertional malaise, or a worsening of symptoms following even minor exertion (often described by patients as “crashes”), unrefreshing sleep, and cognitive dysfunction and/or orthostatic intolerance that are frequent and severe.

Long COVID has been defined in several different ways using different terminology. The U.S. Centers for Disease Control and Prevention, for example, defines “post-COVID conditions” as those continuing four or more weeks beyond first symptoms. The World Health Organization’s clinical case definition of “post COVID-19 condition” includes otherwise unexplained symptoms 3 months from COVID-19 onset and lasting longer than 2 months.

Both ME/CFS and long COVID commonly involve numerous symptoms beyond the defining ones, affecting nearly every organ system in the body, including systemic, neurocognitive, endocrine, cardiovascular, pulmonary, musculoskeletal, and gastrointestinal, with wide variation among individuals. Autonomic dysfunction is common to both conditions, particularly postural orthostatic tachycardia syndrome (POTS).

“My way of understanding these illnesses is that they’re not just multisystem illnesses, but all these interactive systems that lean on each other are dysregulated. … I would say that a very common underlying mediator of both ME/CFS and long COVID is autonomic dysfunction, and it presents as POTS,” Nancy Klimas, MD, director of the Institute for Neuro-Immune Medicine at Nova Southeastern University, Fort Lauderdale, Fla., told this news organization.

Dr. Klimas, who is also director of Clinical Immunology Research at the Miami Veterans Affairs Medical Center, added that “if basic bioenergetics are disrupted and in an oxidative-stress state [then] they have downregulated energy production at the cellular level, which seems to be the case in ME/CFS and now in long COVID.”
 

New ICD-10 codes better characterize the syndromes

New ICD-10 codes for 2023, being implemented on Oct. 1, will enable clinicians to better document all of these interrelated conditions.

Under the existing G93.3, Postviral and related fatigue syndromes, there will now be:

• G93.31 – Postviral fatigue syndrome.
• G93.32 – Myalgic encephalomyelitis/chronic fatigue syndrome (and the separate terms).
• G93.39 – Other postinfection and related fatigue syndromes.

The old R53.82, “Chronic fatigue, unspecified” code now excludes all of the above conditions.

The additional code U09.9 for “post COVID-19 condition, unspecified,” may also be used if applicable.

In addition, a new code for POTS, G90.A, which wasn’t previously mentioned in ICD-10, may also be used starting Oct. 1.

Lucinda Bateman, MD, founder and director of the Bateman Horne Center, Salt Lake City, advises using all applicable codes for a given patient. “If a patient came into my office with long COVID and met criteria for ME/CFS, we would code both, and also any other syndrome criteria that they may meet, such as POTS or fibromyalgia.

“If people use the codes appropriately, then you can understand the overlap better. It increases the likelihood of reimbursement, creates a more accurate medical record for the patient, and provides them with a better tool should they require disability benefits.”

Dr. Bateman advises in-office orthostatic evaluation for all patients with this symptom constellation, using a passive standing evaluation such as the 10-minute NASA Lean test.

“Clinicians should take the time to do orthostatic testing in these patients because it provides objective markers and will help lead us to potential interventions to help improve people’s function.”

The Bateman Horne center offers clinician resources on management of ME/CFS and related conditions.
 

How common is ME/CFS after COVID-19?

According to one published meta-analysis, the global prevalence of “post-acute sequelae of SARS-CoV-2,” defined by any symptom, is about 43% of patients overall following infection, and 49% at 120 days. Fatigue was the most commonly reported symptom, followed by memory problems. As of March 22, the World Health Organization estimated that there have been more than 470 million COVID-19 cases, which would give a figure of about 200 million people who are experiencing a wide range of long-COVID symptoms. 

On the final day of the IACFSME conference, Luis Nacul, MD, of the University of British Columbia, Vancouver, presented several sets of data from his group and others aiming to determine the proportion of individuals who develop symptoms suggestive of ME/CFS following a COVID-19 infection.   

Among a cohort of 88 adults hospitalized with confirmed SARS-CoV-2 infections during the first pandemic wave in 2020 and followed up in the respiratory clinic, rates of reported generalized fatigue were 67% at 3 months and 59.5% at 6 months. Substantial fatigue (that is, present most days and affecting activity levels) were reported by 16% at 3 months and 7% at 6 months. “This should represent in principle the maximum prevalence of cases who would meet the criteria for ME/CFS,” Dr. Nacul said.

Baseline age was indirectly associated with fatigue at 3 and 6 months, while the number of comorbidities a patient had was directly associated. Comorbidities also predicted severe fatigue at 3 months, but the numbers were too small for assessment at 6 months.

Studies involving nonhospitalized patients suggested lower rates. One meta-analysis showed 1-year rates of fatigue in 32% and cognitive impairment in 22%. Another showed very similar rates, reporting fatigue in 28% and memory/concentration difficulties in 18%-19%.   

Dr. Nacul cautioned that these figures are likely overestimates since many of the study populations are taken from respiratory or long-COVID clinics. “The evidence on ‘post-COVID fatigue syndrome’ or ME/CFS following COVID is still evolving. There is a huge need for studies looking more closely at cases meeting well-defined ME/CFS criteria. This unfortunately hasn’t been done for most studies.”
 

Immune system dysfunction appears to underlie many cases

In a keynote address during the conference, Akiko Iwasaki, PhD, of Yale University, New Haven, Conn., pointed out that long COVID and ME/CFS are among many unexplained postacute infection syndromes associated with a long list of viral pathogens, including Ebola, the prior SARS viruses, Epstein-Barr virus, and Dengue, as well as nonviral pathogens such as Coxiella burnetii (Q fever syndrome) and Borrelia (posttreatment Lyme disease syndrome).

Dr. Iwasaki cited a recent Nature Medicine review article that she coauthored on this topic with an ME/CFS patient, noting: “We really need to understand why some people are failing to recover from these types of diseases.”

Emerging evidence supports four different hypotheses regarding pathogenesis: viral reservoir/viral pathogen-associated molecular pattern molecules, autoimmunity, dysbiosis/viral reactivation, and tissue damage

“Right now, it’s too early to exclude or make any conclusions about these. We need to have an open mind to dissect these various possibilities,” she said.

Two speakers reported findings of immune dysregulation in both ME/CFS and long COVID. Wakiro Sato, MD, PhD, of the National Center of Neurology and Psychiatry, Tokyo, reported that anti–G-protein coupled receptor antibodies were found in 33 (55%) of 60 patients with long COVID, and more than 40% had peripheral immune cell profile abnormalities. These findings were similar to those found in patients with ME/CFS, published by Sato’s team (Brain Behav Immun. 2021 Mar 29. doi: 10.1016/j.bbi.2021.03.023) and other researchers in Germany.  

Liisa K. Selin, MD, PhD, professor of pathology at the University of Massachusetts, Worcester, presented data for an analysis of peripheral blood mononuclear cells from 26 donors with ME/CFS (8 with long COVID) and 24 healthy controls. In both patient groups, they found altered expression of inflammatory markers and decreases in CD8 T-cell number and function. The patients with long COVID showed evidence of sustained activation of both T-cell populations with increased CD38 and HLA-DR, associated with a compensatory increased frequency of activated CD4+CD8+ T cells.

“These results are consistent with immune dysregulation associated with overactivation and exhaustion of CD8 T cells, as observed in chronic viral infections and tumor environments,” Dr. Selin said.
 

ME/CFS and long COVID ‘frighteningly similar, if not identical’

Data for a different system derangement in long COVID and ME/CFS, the pathophysiology of exercise intolerance, were presented in another keynote talk by David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital and director of the Massachusetts General Hospital cardiopulmonary laboratory, both in Boston. He has conducted invasive cardiopulmonary exercise testing in patients with ME/CFS and patients with long COVID.

Previously, Dr. Systrom and his team found that patients with ME/CFS have distinct defects in both ventricular filling pressure and oxygen extraction from the muscles. Neither of those are features of deconditioning, which is often blamed for exercise intolerance in people with ME/CFS. Rather, the major defect in deconditioning is decreased stroke volume and cardiac output. In ME/CFS patients, he found supranormal pulmonary blood flow, compared with VO₂ max, suggesting peripheral left-to-right shunting.

In addition, Dr. Systrom and colleagues found that a large proportion of ME/CFS patients with these peripheral vascular defects also have biopsy-demonstrated small-fiber neuropathy, suggesting that acute exercise intolerance is related to underlying autonomic nervous system dysfunction.

In Dr. Systrom and colleagues’ long COVID study, invasive cardiopulmonary exercise testing in 10 patients who had recovered from COVID-19 at least 6 months prior and did not have cardiopulmonary disease had significantly revealed reduced peak exercise aerobic capacity (VO₂ max), compared with 10 age- and sex-matched controls. The reduction in peak VO₂ was associated with impaired systemic oxygen extraction, compared with the controls, despite a preserved peak cardiac index.

The long-COVID patients also showed greater ventilatory inefficiency, which “is entirely related to hyperventilation, not intrinsic lung disease,” Dr. Systrom said, adding that while there may be subsets of patients with interstitial lung disease after acute respiratory distress syndrome, these patients didn’t have that. “This for all the world looks like ME/CFS. We think they are frighteningly similar, if not identical,” Dr. Systrom said.  

In a third study for which Dr. Systrom was a coauthor, published in Annals of Neurology, multisystem involvement was found in nine patients following mild COVID-19 infection, using standardized autonomic assessments including Valsalva maneuver, sudomotor and tilt tests, and skin biopsies for small-fiber neuropathy. The findings included cerebrovascular dysregulation with persistent cerebral arteriolar vasoconstriction, small-fiber neuropathy and related dysautonomia, respiratory dysregulation, and chronic inflammation.

Dr. Systrom’s conclusion: “Dyspnea and hyperventilation are common in ME/CFS and long COVID and there is significant overlap with POTS.”

Dr. Bateman disclosed that she is conducting research for Terra Biological. Dr. Systrom said he is conducting research for Astellas.

A version of this article first appeared on Medscape.com.

Emerging evidence is shedding light on the common underlying mechanisms contributing to the overlapping clinical phenomena of “long COVID,” myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), and dysautonomia.

At the virtual annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis (IACFSME), speakers presented data showing similar pathophysiologic abnormalities in people with systemic symptoms associated with ME/CFS who had a prior SARS-CoV-2 infection and those who did not, including individuals whose illness preceded the COVID-19 pandemic.

Core clinical diagnostic criteria for ME/CFS established by the Institute of Medicine in 2015 include substantial decrement in functioning for 6 months or longer, postexertional malaise, or a worsening of symptoms following even minor exertion (often described by patients as “crashes”), unrefreshing sleep, and cognitive dysfunction and/or orthostatic intolerance that are frequent and severe.

Long COVID has been defined in several different ways using different terminology. The U.S. Centers for Disease Control and Prevention, for example, defines “post-COVID conditions” as those continuing four or more weeks beyond first symptoms. The World Health Organization’s clinical case definition of “post COVID-19 condition” includes otherwise unexplained symptoms 3 months from COVID-19 onset and lasting longer than 2 months.

Both ME/CFS and long COVID commonly involve numerous symptoms beyond the defining ones, affecting nearly every organ system in the body, including systemic, neurocognitive, endocrine, cardiovascular, pulmonary, musculoskeletal, and gastrointestinal, with wide variation among individuals. Autonomic dysfunction is common to both conditions, particularly postural orthostatic tachycardia syndrome (POTS).

“My way of understanding these illnesses is that they’re not just multisystem illnesses, but all these interactive systems that lean on each other are dysregulated. … I would say that a very common underlying mediator of both ME/CFS and long COVID is autonomic dysfunction, and it presents as POTS,” Nancy Klimas, MD, director of the Institute for Neuro-Immune Medicine at Nova Southeastern University, Fort Lauderdale, Fla., told this news organization.

Dr. Klimas, who is also director of Clinical Immunology Research at the Miami Veterans Affairs Medical Center, added that “if basic bioenergetics are disrupted and in an oxidative-stress state [then] they have downregulated energy production at the cellular level, which seems to be the case in ME/CFS and now in long COVID.”
 

New ICD-10 codes better characterize the syndromes

New ICD-10 codes for 2023, being implemented on Oct. 1, will enable clinicians to better document all of these interrelated conditions.

Under the existing G93.3, Postviral and related fatigue syndromes, there will now be:

• G93.31 – Postviral fatigue syndrome.
• G93.32 – Myalgic encephalomyelitis/chronic fatigue syndrome (and the separate terms).
• G93.39 – Other postinfection and related fatigue syndromes.

The old R53.82, “Chronic fatigue, unspecified” code now excludes all of the above conditions.

The additional code U09.9 for “post COVID-19 condition, unspecified,” may also be used if applicable.

In addition, a new code for POTS, G90.A, which wasn’t previously mentioned in ICD-10, may also be used starting Oct. 1.

Lucinda Bateman, MD, founder and director of the Bateman Horne Center, Salt Lake City, advises using all applicable codes for a given patient. “If a patient came into my office with long COVID and met criteria for ME/CFS, we would code both, and also any other syndrome criteria that they may meet, such as POTS or fibromyalgia.

“If people use the codes appropriately, then you can understand the overlap better. It increases the likelihood of reimbursement, creates a more accurate medical record for the patient, and provides them with a better tool should they require disability benefits.”

Dr. Bateman advises in-office orthostatic evaluation for all patients with this symptom constellation, using a passive standing evaluation such as the 10-minute NASA Lean test.

“Clinicians should take the time to do orthostatic testing in these patients because it provides objective markers and will help lead us to potential interventions to help improve people’s function.”

The Bateman Horne center offers clinician resources on management of ME/CFS and related conditions.
 

How common is ME/CFS after COVID-19?

According to one published meta-analysis, the global prevalence of “post-acute sequelae of SARS-CoV-2,” defined by any symptom, is about 43% of patients overall following infection, and 49% at 120 days. Fatigue was the most commonly reported symptom, followed by memory problems. As of March 22, the World Health Organization estimated that there have been more than 470 million COVID-19 cases, which would give a figure of about 200 million people who are experiencing a wide range of long-COVID symptoms. 

On the final day of the IACFSME conference, Luis Nacul, MD, of the University of British Columbia, Vancouver, presented several sets of data from his group and others aiming to determine the proportion of individuals who develop symptoms suggestive of ME/CFS following a COVID-19 infection.   

Among a cohort of 88 adults hospitalized with confirmed SARS-CoV-2 infections during the first pandemic wave in 2020 and followed up in the respiratory clinic, rates of reported generalized fatigue were 67% at 3 months and 59.5% at 6 months. Substantial fatigue (that is, present most days and affecting activity levels) were reported by 16% at 3 months and 7% at 6 months. “This should represent in principle the maximum prevalence of cases who would meet the criteria for ME/CFS,” Dr. Nacul said.

Baseline age was indirectly associated with fatigue at 3 and 6 months, while the number of comorbidities a patient had was directly associated. Comorbidities also predicted severe fatigue at 3 months, but the numbers were too small for assessment at 6 months.

Studies involving nonhospitalized patients suggested lower rates. One meta-analysis showed 1-year rates of fatigue in 32% and cognitive impairment in 22%. Another showed very similar rates, reporting fatigue in 28% and memory/concentration difficulties in 18%-19%.   

Dr. Nacul cautioned that these figures are likely overestimates since many of the study populations are taken from respiratory or long-COVID clinics. “The evidence on ‘post-COVID fatigue syndrome’ or ME/CFS following COVID is still evolving. There is a huge need for studies looking more closely at cases meeting well-defined ME/CFS criteria. This unfortunately hasn’t been done for most studies.”
 

Immune system dysfunction appears to underlie many cases

In a keynote address during the conference, Akiko Iwasaki, PhD, of Yale University, New Haven, Conn., pointed out that long COVID and ME/CFS are among many unexplained postacute infection syndromes associated with a long list of viral pathogens, including Ebola, the prior SARS viruses, Epstein-Barr virus, and Dengue, as well as nonviral pathogens such as Coxiella burnetii (Q fever syndrome) and Borrelia (posttreatment Lyme disease syndrome).

Dr. Iwasaki cited a recent Nature Medicine review article that she coauthored on this topic with an ME/CFS patient, noting: “We really need to understand why some people are failing to recover from these types of diseases.”

Emerging evidence supports four different hypotheses regarding pathogenesis: viral reservoir/viral pathogen-associated molecular pattern molecules, autoimmunity, dysbiosis/viral reactivation, and tissue damage

“Right now, it’s too early to exclude or make any conclusions about these. We need to have an open mind to dissect these various possibilities,” she said.

Two speakers reported findings of immune dysregulation in both ME/CFS and long COVID. Wakiro Sato, MD, PhD, of the National Center of Neurology and Psychiatry, Tokyo, reported that anti–G-protein coupled receptor antibodies were found in 33 (55%) of 60 patients with long COVID, and more than 40% had peripheral immune cell profile abnormalities. These findings were similar to those found in patients with ME/CFS, published by Sato’s team (Brain Behav Immun. 2021 Mar 29. doi: 10.1016/j.bbi.2021.03.023) and other researchers in Germany.  

Liisa K. Selin, MD, PhD, professor of pathology at the University of Massachusetts, Worcester, presented data for an analysis of peripheral blood mononuclear cells from 26 donors with ME/CFS (8 with long COVID) and 24 healthy controls. In both patient groups, they found altered expression of inflammatory markers and decreases in CD8 T-cell number and function. The patients with long COVID showed evidence of sustained activation of both T-cell populations with increased CD38 and HLA-DR, associated with a compensatory increased frequency of activated CD4+CD8+ T cells.

“These results are consistent with immune dysregulation associated with overactivation and exhaustion of CD8 T cells, as observed in chronic viral infections and tumor environments,” Dr. Selin said.
 

ME/CFS and long COVID ‘frighteningly similar, if not identical’

Data for a different system derangement in long COVID and ME/CFS, the pathophysiology of exercise intolerance, were presented in another keynote talk by David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital and director of the Massachusetts General Hospital cardiopulmonary laboratory, both in Boston. He has conducted invasive cardiopulmonary exercise testing in patients with ME/CFS and patients with long COVID.

Previously, Dr. Systrom and his team found that patients with ME/CFS have distinct defects in both ventricular filling pressure and oxygen extraction from the muscles. Neither of those are features of deconditioning, which is often blamed for exercise intolerance in people with ME/CFS. Rather, the major defect in deconditioning is decreased stroke volume and cardiac output. In ME/CFS patients, he found supranormal pulmonary blood flow, compared with VO₂ max, suggesting peripheral left-to-right shunting.

In addition, Dr. Systrom and colleagues found that a large proportion of ME/CFS patients with these peripheral vascular defects also have biopsy-demonstrated small-fiber neuropathy, suggesting that acute exercise intolerance is related to underlying autonomic nervous system dysfunction.

In Dr. Systrom and colleagues’ long COVID study, invasive cardiopulmonary exercise testing in 10 patients who had recovered from COVID-19 at least 6 months prior and did not have cardiopulmonary disease had significantly revealed reduced peak exercise aerobic capacity (VO₂ max), compared with 10 age- and sex-matched controls. The reduction in peak VO₂ was associated with impaired systemic oxygen extraction, compared with the controls, despite a preserved peak cardiac index.

The long-COVID patients also showed greater ventilatory inefficiency, which “is entirely related to hyperventilation, not intrinsic lung disease,” Dr. Systrom said, adding that while there may be subsets of patients with interstitial lung disease after acute respiratory distress syndrome, these patients didn’t have that. “This for all the world looks like ME/CFS. We think they are frighteningly similar, if not identical,” Dr. Systrom said.  

In a third study for which Dr. Systrom was a coauthor, published in Annals of Neurology, multisystem involvement was found in nine patients following mild COVID-19 infection, using standardized autonomic assessments including Valsalva maneuver, sudomotor and tilt tests, and skin biopsies for small-fiber neuropathy. The findings included cerebrovascular dysregulation with persistent cerebral arteriolar vasoconstriction, small-fiber neuropathy and related dysautonomia, respiratory dysregulation, and chronic inflammation.

Dr. Systrom’s conclusion: “Dyspnea and hyperventilation are common in ME/CFS and long COVID and there is significant overlap with POTS.”

Dr. Bateman disclosed that she is conducting research for Terra Biological. Dr. Systrom said he is conducting research for Astellas.

A version of this article first appeared on Medscape.com.

A variety of treatments, most already commercially available, are under investigation for treating the constellation of overlapping symptoms associated with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), “long COVID,” and dysautonomia.

At the virtual annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis, speakers presented data for a variety of approaches to ease symptoms common across postviral conditions, such as extreme fatigue, postexertional malaise (“crash”), cognitive dysfunction (“brain fog”), orthostatic intolerance including postural orthostatic tachycardia syndrome (POTS), and chronic pain. Most of the modalities are already commercially available for other indications, although some are costly and not covered by payers for these conditions.

“Both post–acute COVID-19 syndrome and ME/CFS are forms of postinfectious viral syndromes and they have overlapping symptoms. ... In the past, patients were told ‘you have chronic fatigue syndrome but there’s nothing we can do for it.’ That certainly is not the case. There aren’t cures, but there are many management techniques to improve symptoms,” Charles W. Lapp, MD, medical director of the Hunter-Hopkins Center, Charlotte, N.C., said in an interview.

A current mainstay of treatment for ME/CFS – including that triggered by COVID-19 – is activity pacing, in which patients learn to stay within their “energy envelopes” in order to avoid postexertional malaise, a worsening of all symptoms with exertion. The use of “graded exercise” is no longer recommended, per U.K. and U.S. guidelines.

Data for the following approaches were presented at the IACFS/ME conference:
 

Pyridostigmine (mestinon, others)

Pyridostigmine, an acetylcholinesterase inhibitor, is approved for the treatment of muscle weakness resulting from myasthenia gravis and is available in generic form. It has previously been shown to produce significant improvement in both symptom burden and heart rate response in POTS.

At the IACFS/ME conference, David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital and director of the Massachusetts General Hospital Cardiopulmonary laboratory, both in Boston, summarized his group’s study in patients with ME/CFS using pyridostigmine as both a potential treatment for improving exercise capacity and a proof-of-concept that neurovascular dysregulation underlies exertional intolerance in the condition.

A total of 45 patients were randomized to 60 mg oral pyridostigmine or placebo after an invasive cardiopulmonary exercise test, and a second test performed 50 minutes later. Peak VO₂ increased after pyridostigmine but decreased after placebo (+13.3 mL/min vs. –40.2 mL/min, P < .05). Cardiac output and right atrial pressure were also significantly improved with pyridostigmine and worse with placebo.

“We suggest that treatable neurovascular dysregulation underlies acute exercise intolerance in ME/CFS. ... Pyridostigmine may be a useful repurposed off-label treatment [for] a subset of patients with exercise intolerance,” Dr. Systrom said.

Asked to comment, Dr. Lapp said: “We’ve used Mestinon for years because it helps with POTS and also with neurally mediated hypotension. Systrom is taking it to a new level because he’s shown that it increases preload to the heart.” However, he noted that it’s unclear whether the drug will help patients who don’t have POTS specifically. On the other hand, patients rarely experience side effects from the drug.

Since the generic tablets come only in 60-mg doses, and the starting dose is 30 mg three times a day, he advised cutting the tablets in half during titration up to 60 mg three times a day.
 

Oxaloacetate (benaGene)

David Lyons Kaufman, MD, of the Center for Complex Diseases, Mountain View, Calif., summarized data from his group’s recently published open-label, nonrandomized, “proof-of-concept” study on use of the commercially available nutritional supplement anhydrous enol-oxaloacetate for treating mental and physical fatigue in 76 patients with longstanding ME/CFS and 43 with long-COVID fatigue.

Oxaloacetate is a major step in the Krebs cycle within the mitochondria that are depleted in patients with ME/CFS. It is also an energy metabolite that has multiple effects in cells and mitochondria, Dr. Kaufman explained.

Doses ranging from 500 mg twice daily up to 1,000 mg three times a day were given for 6 weeks. Up to 33% of the patients with ME/CFS and up to 46.8% of the long-COVID group achieved clinical efficacy as measured by physical and mental fatigue scores, compared with just 5.9% of historical ME/CFS controls. All doses showed highly significant improvements.

The only adverse effects were occasional dyspepsia, which was avoided by taking the supplement with food, and insomnia, resolved by having them dose at breakfast and lunch, Dr. Kaufman said.

Following those preliminary data, there is now an ongoing 90-day, randomized, placebo-controlled clinical trial of 80 patients with ME/CFS using 2,000 mg anhydrous enol-oxaloacetate per day. Endpoints include multiple objective measures.

“We have a health care crisis with long COVID, and we’ve had this smoldering crisis with ME/CFS for decades that’s never been addressed. ME/CFS and long COVID, if not identical, are certainly overlapping. ... We have to pursue these translational medicine pilot studies as rapidly as possible,” Dr. Kaufman remarked.

Dr. Lapp told this news organization that it makes sense to use constituents of the Krebs cycle to improve mitochondrial function, but the problem with oxaloacetate is its cost. Dr. Kaufman mentioned that based on the preliminary trial, the therapeutic “sweet spot” appeared to be 1,000 mg twice daily. The manufacturer’s website lists the price for a single bottle of 30 250-mg capsules at $49, or $42 if purchased via a monthly subscription.

“It’s a benign drug, and it’s over the counter. I would give it to any patient who’s got a big wallet,” Dr. Lapp quipped, adding: “If they’ve got the money, they can order it tonight.”
 

Inspiritol

Inspiritol is an investigational “nebulized, inhaled, multimechanism medication designed to treat the major symptoms of respiratory distress with antioxidant, anti-inflammatory, and broad-spectrum antiviral and antibacterial properties. Inspiritol is composed of both endogenously produced and naturally occurring, well-tolerated biochemicals,” according to the company website.

The hypothesis, Liisa K. Selin, MD, PhD, professor of pathology at the University of Massachusetts, Worcester, said at the meeting, is that “ME/CFS and long COVID-19 result from an aberrant response to an immunological trigger like infection, which results in a permanently dysregulated immune system as a result of overactivation of CD8 T cells and subsequent exhaustion.”

Inspiritol, containing five antioxidants, acts as an immune modulator to reverse the CD8 T cell exhaustion and improve symptoms. Administration by inhaler delivers it directly to the brain from the lung. It was originally designed for use in chronic obstructive pulmonary disease and asthma and has shown efficacy for acute COVID-19, Dr. Selin said.

In a preliminary study, four patients with ME/CFS and five with long COVID have been treated with Inspiritol for 2-15 months, and all have self-reported improved symptoms. Cough has been the only reported side effect.

The company is pursuing an Investigational New Drug Application for the product with the Food and Drug Administration and has several patents pending. Dr. Lapp called Inspiritol “very interesting,” and said that reversal of CD8 “exhaustion” also would appear to be a promising approach. However, he noted, “the problem is that we don’t know what’s in it.”
 

Stellate ganglion block

Injection of local anesthetic near the stellate ganglion to block activity of the entire cervical sympathetic chain has been used for nearly a century to treat a variety of sympathetically mediated conditions, including complex regional pain syndrome (CRPS), shingles, and phantom-limb pain. More recently, it has been used in a variety of other conditions, including PTSD, Raynaud’s disease, menopausal hot flashes, and hyperhidrosis.

Insurance companies typically cover it for CRPS, neuropathic upper-extremity pain, hyperhidrosis, and Raynaud’s, said Luke Liu, MD, an anesthesiologist who is founder and chief executive officer of Alaska-based pain management company Neuroversion.

Deborah Duricka, PhD, also with Neuroversion, presented results from a now-published case series of 11 patients with long COVID who underwent stellate ganglion block by a board-certified anesthesiologist, first on one side at the level of C6, then on the contralateral side the following day.

Clinically meaningful benefits were seen in at least five of the patients in fatigue, memory problems, problems concentrating, rapid heartbeat, orthostatic intolerance, sleep problems, postexertional malaise, anxiety, and depression.

The hypothetical mechanism, she said, is that “sympathetic block prevents sympathetically driven vasoconstriction in carotid and vertebral arteries.”

Dr. Liu presented another case series of five patients with ME/CFS who underwent the procedure with ultrasound guidance, again on one side and the other side the next day. All had upper-limb autonomic issues such as Raynaud’s and/or neuropathic pain that had been refractory to more conventional treatments.

All five patients reported improvements in symptoms of ME/CFS, including energy level, cognition, pain, and postexertional malaise. One patient reported “feeling well for the first time in decades.” However, that patient relapsed after a mild viral illness 3.5 months after treatment. Some of the patients have required further treatments.

Dr. Lapp commented that, although the procedure is generally safe when performed by an experienced clinician, “Any time you do an injection like that, there’s a high risk that you could nick an artery or a vein or hit an essential nerve in the neck. That’s why it has to be done under fluoroscopy or ultrasound.”

He said he’s had a few patients undergo the procedure, mostly for CRPS, and they seem to have benefited from it. “It might increase cerebral blood flow and preload to the heart, so it might decrease ME/CFS symptoms and help with POTS as well.”

Nonetheless, Dr. Lapp said he wouldn’t consider stellate ganglion block as first-line treatment for ME/CFS or long COVID. “I think it would be for the treatment-resistant patient, when you’ve gone through all the treatments that we know and addressed all the comorbidities and they’re still not getting better.”

But, he added, it is a standard procedure. “Any pain clinic can do a stellate block.”
 

Transcutaneous auricular vagus nerve stimulation

Nicola Clague-Baker, PhD, a physiotherapist at the University of Liverpool (England), presented findings from an international survey of people with ME/CFS regarding their experience with transcutaneous auricular vagus nerve stimulation (taVNS) to manage their autonomic symptoms. The technique involves stimulation of the autonomic nervous system via the vagus nerve using electrodes applied to part of the ear. The theory is that the technique stimulates the parasympathetic nervous system and improves autonomic balance.

Two small previous trials showing benefit of vagus nerve stimulation for people with ME/CFS used more invasive and less comfortable methods of applying the stimulation rather than to the ear, Dr. Clague-Baker and colleagues noted in a poster. It has also been used successfully in treating POTS, another conference speaker noted.

A total of 131 people with ME/CFS (called simply “ME” in the United Kingdom) responded to a survey advertised on social media and websites. The majority (60%) were from the United Kingdom while the rest were from Europe, Australia, and North America. Most were female, and slightly more than half had lived with ME for 10 or more years.

The majority (72%) were still using taVNS, while 28% had stopped using it. Only 9% had used the modality for longer than a year. Respondents identified more than 30 benefits in symptoms and activities, with improvements in postexertional malaise (39%) and brain fog (37%) being the most common. One reported significant reduction in constipation.

However, respondents also mentioned more than 20 short- and long-term negatives, including headaches (15%) and long-term irritation at the site (9%). One participant reported a “big improvement in neuropathic pain, but not so much for muscles and joints.”

Overall, 80% reported that they would continue using taVNS and 67% said they would recommend it to others with ME, and 56% said that the system was mildly to very beneficial.

Dr. Lapp noted that several types of transcutaneous electrical nerve stimulation units with ear clips are sold online, and he’s seen them work well for migraine treatment. However, he cautioned that some patients have had side effects from the treatment, such as headaches and dizziness. “It’s putting an electrical current through your brain. In my mind, it’s another last-ditch measure.”

Dr. Lapp reported no financial disclosures.

A version of this article first appeared on Medscape.com.

A variety of treatments, most already commercially available, are under investigation for treating the constellation of overlapping symptoms associated with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), “long COVID,” and dysautonomia.

At the virtual annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis, speakers presented data for a variety of approaches to ease symptoms common across postviral conditions, such as extreme fatigue, postexertional malaise (“crash”), cognitive dysfunction (“brain fog”), orthostatic intolerance including postural orthostatic tachycardia syndrome (POTS), and chronic pain. Most of the modalities are already commercially available for other indications, although some are costly and not covered by payers for these conditions.

“Both post–acute COVID-19 syndrome and ME/CFS are forms of postinfectious viral syndromes and they have overlapping symptoms. ... In the past, patients were told ‘you have chronic fatigue syndrome but there’s nothing we can do for it.’ That certainly is not the case. There aren’t cures, but there are many management techniques to improve symptoms,” Charles W. Lapp, MD, medical director of the Hunter-Hopkins Center, Charlotte, N.C., said in an interview.

A current mainstay of treatment for ME/CFS – including that triggered by COVID-19 – is activity pacing, in which patients learn to stay within their “energy envelopes” in order to avoid postexertional malaise, a worsening of all symptoms with exertion. The use of “graded exercise” is no longer recommended, per U.K. and U.S. guidelines.

Data for the following approaches were presented at the IACFS/ME conference:
 

Pyridostigmine (mestinon, others)

Pyridostigmine, an acetylcholinesterase inhibitor, is approved for the treatment of muscle weakness resulting from myasthenia gravis and is available in generic form. It has previously been shown to produce significant improvement in both symptom burden and heart rate response in POTS.

At the IACFS/ME conference, David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital and director of the Massachusetts General Hospital Cardiopulmonary laboratory, both in Boston, summarized his group’s study in patients with ME/CFS using pyridostigmine as both a potential treatment for improving exercise capacity and a proof-of-concept that neurovascular dysregulation underlies exertional intolerance in the condition.

A total of 45 patients were randomized to 60 mg oral pyridostigmine or placebo after an invasive cardiopulmonary exercise test, and a second test performed 50 minutes later. Peak VO₂ increased after pyridostigmine but decreased after placebo (+13.3 mL/min vs. –40.2 mL/min, P < .05). Cardiac output and right atrial pressure were also significantly improved with pyridostigmine and worse with placebo.

“We suggest that treatable neurovascular dysregulation underlies acute exercise intolerance in ME/CFS. ... Pyridostigmine may be a useful repurposed off-label treatment [for] a subset of patients with exercise intolerance,” Dr. Systrom said.

Asked to comment, Dr. Lapp said: “We’ve used Mestinon for years because it helps with POTS and also with neurally mediated hypotension. Systrom is taking it to a new level because he’s shown that it increases preload to the heart.” However, he noted that it’s unclear whether the drug will help patients who don’t have POTS specifically. On the other hand, patients rarely experience side effects from the drug.

Since the generic tablets come only in 60-mg doses, and the starting dose is 30 mg three times a day, he advised cutting the tablets in half during titration up to 60 mg three times a day.
 

Oxaloacetate (benaGene)

David Lyons Kaufman, MD, of the Center for Complex Diseases, Mountain View, Calif., summarized data from his group’s recently published open-label, nonrandomized, “proof-of-concept” study on use of the commercially available nutritional supplement anhydrous enol-oxaloacetate for treating mental and physical fatigue in 76 patients with longstanding ME/CFS and 43 with long-COVID fatigue.

Oxaloacetate is a major step in the Krebs cycle within the mitochondria that are depleted in patients with ME/CFS. It is also an energy metabolite that has multiple effects in cells and mitochondria, Dr. Kaufman explained.

Doses ranging from 500 mg twice daily up to 1,000 mg three times a day were given for 6 weeks. Up to 33% of the patients with ME/CFS and up to 46.8% of the long-COVID group achieved clinical efficacy as measured by physical and mental fatigue scores, compared with just 5.9% of historical ME/CFS controls. All doses showed highly significant improvements.

The only adverse effects were occasional dyspepsia, which was avoided by taking the supplement with food, and insomnia, resolved by having them dose at breakfast and lunch, Dr. Kaufman said.

Following those preliminary data, there is now an ongoing 90-day, randomized, placebo-controlled clinical trial of 80 patients with ME/CFS using 2,000 mg anhydrous enol-oxaloacetate per day. Endpoints include multiple objective measures.

“We have a health care crisis with long COVID, and we’ve had this smoldering crisis with ME/CFS for decades that’s never been addressed. ME/CFS and long COVID, if not identical, are certainly overlapping. ... We have to pursue these translational medicine pilot studies as rapidly as possible,” Dr. Kaufman remarked.

Dr. Lapp told this news organization that it makes sense to use constituents of the Krebs cycle to improve mitochondrial function, but the problem with oxaloacetate is its cost. Dr. Kaufman mentioned that based on the preliminary trial, the therapeutic “sweet spot” appeared to be 1,000 mg twice daily. The manufacturer’s website lists the price for a single bottle of 30 250-mg capsules at $49, or $42 if purchased via a monthly subscription.

“It’s a benign drug, and it’s over the counter. I would give it to any patient who’s got a big wallet,” Dr. Lapp quipped, adding: “If they’ve got the money, they can order it tonight.”
 

Inspiritol

Inspiritol is an investigational “nebulized, inhaled, multimechanism medication designed to treat the major symptoms of respiratory distress with antioxidant, anti-inflammatory, and broad-spectrum antiviral and antibacterial properties. Inspiritol is composed of both endogenously produced and naturally occurring, well-tolerated biochemicals,” according to the company website.

The hypothesis, Liisa K. Selin, MD, PhD, professor of pathology at the University of Massachusetts, Worcester, said at the meeting, is that “ME/CFS and long COVID-19 result from an aberrant response to an immunological trigger like infection, which results in a permanently dysregulated immune system as a result of overactivation of CD8 T cells and subsequent exhaustion.”

Inspiritol, containing five antioxidants, acts as an immune modulator to reverse the CD8 T cell exhaustion and improve symptoms. Administration by inhaler delivers it directly to the brain from the lung. It was originally designed for use in chronic obstructive pulmonary disease and asthma and has shown efficacy for acute COVID-19, Dr. Selin said.

In a preliminary study, four patients with ME/CFS and five with long COVID have been treated with Inspiritol for 2-15 months, and all have self-reported improved symptoms. Cough has been the only reported side effect.

The company is pursuing an Investigational New Drug Application for the product with the Food and Drug Administration and has several patents pending. Dr. Lapp called Inspiritol “very interesting,” and said that reversal of CD8 “exhaustion” also would appear to be a promising approach. However, he noted, “the problem is that we don’t know what’s in it.”
 

Stellate ganglion block

Injection of local anesthetic near the stellate ganglion to block activity of the entire cervical sympathetic chain has been used for nearly a century to treat a variety of sympathetically mediated conditions, including complex regional pain syndrome (CRPS), shingles, and phantom-limb pain. More recently, it has been used in a variety of other conditions, including PTSD, Raynaud’s disease, menopausal hot flashes, and hyperhidrosis.

Insurance companies typically cover it for CRPS, neuropathic upper-extremity pain, hyperhidrosis, and Raynaud’s, said Luke Liu, MD, an anesthesiologist who is founder and chief executive officer of Alaska-based pain management company Neuroversion.

Deborah Duricka, PhD, also with Neuroversion, presented results from a now-published case series of 11 patients with long COVID who underwent stellate ganglion block by a board-certified anesthesiologist, first on one side at the level of C6, then on the contralateral side the following day.

Clinically meaningful benefits were seen in at least five of the patients in fatigue, memory problems, problems concentrating, rapid heartbeat, orthostatic intolerance, sleep problems, postexertional malaise, anxiety, and depression.

The hypothetical mechanism, she said, is that “sympathetic block prevents sympathetically driven vasoconstriction in carotid and vertebral arteries.”

Dr. Liu presented another case series of five patients with ME/CFS who underwent the procedure with ultrasound guidance, again on one side and the other side the next day. All had upper-limb autonomic issues such as Raynaud’s and/or neuropathic pain that had been refractory to more conventional treatments.

All five patients reported improvements in symptoms of ME/CFS, including energy level, cognition, pain, and postexertional malaise. One patient reported “feeling well for the first time in decades.” However, that patient relapsed after a mild viral illness 3.5 months after treatment. Some of the patients have required further treatments.

Dr. Lapp commented that, although the procedure is generally safe when performed by an experienced clinician, “Any time you do an injection like that, there’s a high risk that you could nick an artery or a vein or hit an essential nerve in the neck. That’s why it has to be done under fluoroscopy or ultrasound.”

He said he’s had a few patients undergo the procedure, mostly for CRPS, and they seem to have benefited from it. “It might increase cerebral blood flow and preload to the heart, so it might decrease ME/CFS symptoms and help with POTS as well.”

Nonetheless, Dr. Lapp said he wouldn’t consider stellate ganglion block as first-line treatment for ME/CFS or long COVID. “I think it would be for the treatment-resistant patient, when you’ve gone through all the treatments that we know and addressed all the comorbidities and they’re still not getting better.”

But, he added, it is a standard procedure. “Any pain clinic can do a stellate block.”
 

Transcutaneous auricular vagus nerve stimulation

Nicola Clague-Baker, PhD, a physiotherapist at the University of Liverpool (England), presented findings from an international survey of people with ME/CFS regarding their experience with transcutaneous auricular vagus nerve stimulation (taVNS) to manage their autonomic symptoms. The technique involves stimulation of the autonomic nervous system via the vagus nerve using electrodes applied to part of the ear. The theory is that the technique stimulates the parasympathetic nervous system and improves autonomic balance.

Two small previous trials showing benefit of vagus nerve stimulation for people with ME/CFS used more invasive and less comfortable methods of applying the stimulation rather than to the ear, Dr. Clague-Baker and colleagues noted in a poster. It has also been used successfully in treating POTS, another conference speaker noted.

A total of 131 people with ME/CFS (called simply “ME” in the United Kingdom) responded to a survey advertised on social media and websites. The majority (60%) were from the United Kingdom while the rest were from Europe, Australia, and North America. Most were female, and slightly more than half had lived with ME for 10 or more years.

The majority (72%) were still using taVNS, while 28% had stopped using it. Only 9% had used the modality for longer than a year. Respondents identified more than 30 benefits in symptoms and activities, with improvements in postexertional malaise (39%) and brain fog (37%) being the most common. One reported significant reduction in constipation.

However, respondents also mentioned more than 20 short- and long-term negatives, including headaches (15%) and long-term irritation at the site (9%). One participant reported a “big improvement in neuropathic pain, but not so much for muscles and joints.”

Overall, 80% reported that they would continue using taVNS and 67% said they would recommend it to others with ME, and 56% said that the system was mildly to very beneficial.

Dr. Lapp noted that several types of transcutaneous electrical nerve stimulation units with ear clips are sold online, and he’s seen them work well for migraine treatment. However, he cautioned that some patients have had side effects from the treatment, such as headaches and dizziness. “It’s putting an electrical current through your brain. In my mind, it’s another last-ditch measure.”

Dr. Lapp reported no financial disclosures.

A version of this article first appeared on Medscape.com.

A variety of treatments, most already commercially available, are under investigation for treating the constellation of overlapping symptoms associated with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), “long COVID,” and dysautonomia.

At the virtual annual meeting of the International Association for Chronic Fatigue Syndrome/Myalgic Encephalomyelitis, speakers presented data for a variety of approaches to ease symptoms common across postviral conditions, such as extreme fatigue, postexertional malaise (“crash”), cognitive dysfunction (“brain fog”), orthostatic intolerance including postural orthostatic tachycardia syndrome (POTS), and chronic pain. Most of the modalities are already commercially available for other indications, although some are costly and not covered by payers for these conditions.

“Both post–acute COVID-19 syndrome and ME/CFS are forms of postinfectious viral syndromes and they have overlapping symptoms. ... In the past, patients were told ‘you have chronic fatigue syndrome but there’s nothing we can do for it.’ That certainly is not the case. There aren’t cures, but there are many management techniques to improve symptoms,” Charles W. Lapp, MD, medical director of the Hunter-Hopkins Center, Charlotte, N.C., said in an interview.

A current mainstay of treatment for ME/CFS – including that triggered by COVID-19 – is activity pacing, in which patients learn to stay within their “energy envelopes” in order to avoid postexertional malaise, a worsening of all symptoms with exertion. The use of “graded exercise” is no longer recommended, per U.K. and U.S. guidelines.

Data for the following approaches were presented at the IACFS/ME conference:
 

Pyridostigmine (mestinon, others)

Pyridostigmine, an acetylcholinesterase inhibitor, is approved for the treatment of muscle weakness resulting from myasthenia gravis and is available in generic form. It has previously been shown to produce significant improvement in both symptom burden and heart rate response in POTS.

At the IACFS/ME conference, David M. Systrom, MD, a pulmonary and critical care medicine specialist at Brigham and Women’s Hospital and director of the Massachusetts General Hospital Cardiopulmonary laboratory, both in Boston, summarized his group’s study in patients with ME/CFS using pyridostigmine as both a potential treatment for improving exercise capacity and a proof-of-concept that neurovascular dysregulation underlies exertional intolerance in the condition.

A total of 45 patients were randomized to 60 mg oral pyridostigmine or placebo after an invasive cardiopulmonary exercise test, and a second test performed 50 minutes later. Peak VO₂ increased after pyridostigmine but decreased after placebo (+13.3 mL/min vs. –40.2 mL/min, P < .05). Cardiac output and right atrial pressure were also significantly improved with pyridostigmine and worse with placebo.

“We suggest that treatable neurovascular dysregulation underlies acute exercise intolerance in ME/CFS. ... Pyridostigmine may be a useful repurposed off-label treatment [for] a subset of patients with exercise intolerance,” Dr. Systrom said.

Asked to comment, Dr. Lapp said: “We’ve used Mestinon for years because it helps with POTS and also with neurally mediated hypotension. Systrom is taking it to a new level because he’s shown that it increases preload to the heart.” However, he noted that it’s unclear whether the drug will help patients who don’t have POTS specifically. On the other hand, patients rarely experience side effects from the drug.

Since the generic tablets come only in 60-mg doses, and the starting dose is 30 mg three times a day, he advised cutting the tablets in half during titration up to 60 mg three times a day.
 

Oxaloacetate (benaGene)

David Lyons Kaufman, MD, of the Center for Complex Diseases, Mountain View, Calif., summarized data from his group’s recently published open-label, nonrandomized, “proof-of-concept” study on use of the commercially available nutritional supplement anhydrous enol-oxaloacetate for treating mental and physical fatigue in 76 patients with longstanding ME/CFS and 43 with long-COVID fatigue.

Oxaloacetate is a major step in the Krebs cycle within the mitochondria that are depleted in patients with ME/CFS. It is also an energy metabolite that has multiple effects in cells and mitochondria, Dr. Kaufman explained.

Doses ranging from 500 mg twice daily up to 1,000 mg three times a day were given for 6 weeks. Up to 33% of the patients with ME/CFS and up to 46.8% of the long-COVID group achieved clinical efficacy as measured by physical and mental fatigue scores, compared with just 5.9% of historical ME/CFS controls. All doses showed highly significant improvements.

The only adverse effects were occasional dyspepsia, which was avoided by taking the supplement with food, and insomnia, resolved by having them dose at breakfast and lunch, Dr. Kaufman said.

Following those preliminary data, there is now an ongoing 90-day, randomized, placebo-controlled clinical trial of 80 patients with ME/CFS using 2,000 mg anhydrous enol-oxaloacetate per day. Endpoints include multiple objective measures.

“We have a health care crisis with long COVID, and we’ve had this smoldering crisis with ME/CFS for decades that’s never been addressed. ME/CFS and long COVID, if not identical, are certainly overlapping. ... We have to pursue these translational medicine pilot studies as rapidly as possible,” Dr. Kaufman remarked.

Dr. Lapp told this news organization that it makes sense to use constituents of the Krebs cycle to improve mitochondrial function, but the problem with oxaloacetate is its cost. Dr. Kaufman mentioned that based on the preliminary trial, the therapeutic “sweet spot” appeared to be 1,000 mg twice daily. The manufacturer’s website lists the price for a single bottle of 30 250-mg capsules at $49, or $42 if purchased via a monthly subscription.

“It’s a benign drug, and it’s over the counter. I would give it to any patient who’s got a big wallet,” Dr. Lapp quipped, adding: “If they’ve got the money, they can order it tonight.”
 

Inspiritol

Inspiritol is an investigational “nebulized, inhaled, multimechanism medication designed to treat the major symptoms of respiratory distress with antioxidant, anti-inflammatory, and broad-spectrum antiviral and antibacterial properties. Inspiritol is composed of both endogenously produced and naturally occurring, well-tolerated biochemicals,” according to the company website.

The hypothesis, Liisa K. Selin, MD, PhD, professor of pathology at the University of Massachusetts, Worcester, said at the meeting, is that “ME/CFS and long COVID-19 result from an aberrant response to an immunological trigger like infection, which results in a permanently dysregulated immune system as a result of overactivation of CD8 T cells and subsequent exhaustion.”

Inspiritol, containing five antioxidants, acts as an immune modulator to reverse the CD8 T cell exhaustion and improve symptoms. Administration by inhaler delivers it directly to the brain from the lung. It was originally designed for use in chronic obstructive pulmonary disease and asthma and has shown efficacy for acute COVID-19, Dr. Selin said.

In a preliminary study, four patients with ME/CFS and five with long COVID have been treated with Inspiritol for 2-15 months, and all have self-reported improved symptoms. Cough has been the only reported side effect.

The company is pursuing an Investigational New Drug Application for the product with the Food and Drug Administration and has several patents pending. Dr. Lapp called Inspiritol “very interesting,” and said that reversal of CD8 “exhaustion” also would appear to be a promising approach. However, he noted, “the problem is that we don’t know what’s in it.”
 

Stellate ganglion block

Injection of local anesthetic near the stellate ganglion to block activity of the entire cervical sympathetic chain has been used for nearly a century to treat a variety of sympathetically mediated conditions, including complex regional pain syndrome (CRPS), shingles, and phantom-limb pain. More recently, it has been used in a variety of other conditions, including PTSD, Raynaud’s disease, menopausal hot flashes, and hyperhidrosis.

Insurance companies typically cover it for CRPS, neuropathic upper-extremity pain, hyperhidrosis, and Raynaud’s, said Luke Liu, MD, an anesthesiologist who is founder and chief executive officer of Alaska-based pain management company Neuroversion.

Deborah Duricka, PhD, also with Neuroversion, presented results from a now-published case series of 11 patients with long COVID who underwent stellate ganglion block by a board-certified anesthesiologist, first on one side at the level of C6, then on the contralateral side the following day.

Clinically meaningful benefits were seen in at least five of the patients in fatigue, memory problems, problems concentrating, rapid heartbeat, orthostatic intolerance, sleep problems, postexertional malaise, anxiety, and depression.

The hypothetical mechanism, she said, is that “sympathetic block prevents sympathetically driven vasoconstriction in carotid and vertebral arteries.”

Dr. Liu presented another case series of five patients with ME/CFS who underwent the procedure with ultrasound guidance, again on one side and the other side the next day. All had upper-limb autonomic issues such as Raynaud’s and/or neuropathic pain that had been refractory to more conventional treatments.

All five patients reported improvements in symptoms of ME/CFS, including energy level, cognition, pain, and postexertional malaise. One patient reported “feeling well for the first time in decades.” However, that patient relapsed after a mild viral illness 3.5 months after treatment. Some of the patients have required further treatments.

Dr. Lapp commented that, although the procedure is generally safe when performed by an experienced clinician, “Any time you do an injection like that, there’s a high risk that you could nick an artery or a vein or hit an essential nerve in the neck. That’s why it has to be done under fluoroscopy or ultrasound.”

He said he’s had a few patients undergo the procedure, mostly for CRPS, and they seem to have benefited from it. “It might increase cerebral blood flow and preload to the heart, so it might decrease ME/CFS symptoms and help with POTS as well.”

Nonetheless, Dr. Lapp said he wouldn’t consider stellate ganglion block as first-line treatment for ME/CFS or long COVID. “I think it would be for the treatment-resistant patient, when you’ve gone through all the treatments that we know and addressed all the comorbidities and they’re still not getting better.”

But, he added, it is a standard procedure. “Any pain clinic can do a stellate block.”
 

Transcutaneous auricular vagus nerve stimulation

Nicola Clague-Baker, PhD, a physiotherapist at the University of Liverpool (England), presented findings from an international survey of people with ME/CFS regarding their experience with transcutaneous auricular vagus nerve stimulation (taVNS) to manage their autonomic symptoms. The technique involves stimulation of the autonomic nervous system via the vagus nerve using electrodes applied to part of the ear. The theory is that the technique stimulates the parasympathetic nervous system and improves autonomic balance.

Two small previous trials showing benefit of vagus nerve stimulation for people with ME/CFS used more invasive and less comfortable methods of applying the stimulation rather than to the ear, Dr. Clague-Baker and colleagues noted in a poster. It has also been used successfully in treating POTS, another conference speaker noted.

A total of 131 people with ME/CFS (called simply “ME” in the United Kingdom) responded to a survey advertised on social media and websites. The majority (60%) were from the United Kingdom while the rest were from Europe, Australia, and North America. Most were female, and slightly more than half had lived with ME for 10 or more years.

The majority (72%) were still using taVNS, while 28% had stopped using it. Only 9% had used the modality for longer than a year. Respondents identified more than 30 benefits in symptoms and activities, with improvements in postexertional malaise (39%) and brain fog (37%) being the most common. One reported significant reduction in constipation.

However, respondents also mentioned more than 20 short- and long-term negatives, including headaches (15%) and long-term irritation at the site (9%). One participant reported a “big improvement in neuropathic pain, but not so much for muscles and joints.”

Overall, 80% reported that they would continue using taVNS and 67% said they would recommend it to others with ME, and 56% said that the system was mildly to very beneficial.

Dr. Lapp noted that several types of transcutaneous electrical nerve stimulation units with ear clips are sold online, and he’s seen them work well for migraine treatment. However, he cautioned that some patients have had side effects from the treatment, such as headaches and dizziness. “It’s putting an electrical current through your brain. In my mind, it’s another last-ditch measure.”

Dr. Lapp reported no financial disclosures.

A version of this article first appeared on Medscape.com.

Researchers published the study covered in this summary on researchsquare.com as a preprint that has not yet been peer reviewed.

Key takeaways

• In Japanese adults with type 1 diabetes insulin-pump treatment (continuous subcutaneous insulin infusion) and higher problem-solving perception appear protective against impaired awareness of hypoglycemia (IAH), while diabetic peripheral neuropathy (DPN) is associated with increased risk.
• Diabetes distress and fear of hypoglycemia are common in people with IAH.

Why this matters

• Adults with type 1 diabetes and IAH have a reduced ability to perceive hypoglycemic symptoms and are at risk of severe hypoglycemic events because they are unable to take immediate corrective action.
• This is the first study to identify protective factors and risk factors of IAH in Japanese adults with type 1 diabetes.
• People with IAH may plan to loosen tight glucose management and intentionally omit insulin injection to prevent severe hypoglycemia.
• The information in this report may help improve the management of people with problematic hypoglycemia, the authors suggested. Treatment with an insulin pump and structured education aimed at improving problem-solving skills may be useful interventions for adults with type 1 diabetes and IAH, they suggested.

Study design

• The study involved a cross-sectional analysis of 288 Japanese adults with type 1 diabetes who averaged 50 years old, had diabetes for an average of about 18 years, had an average hemoglobin A1c at baseline of 7.7%, and included about 37% men and 63% women.
• The cohort included 55 people with IAH (19%) and 233 with no impairment of their hypoglycemia awareness, based on their score on the .

Key results

• DPN was significantly more prevalent in the IAH group than in the control group (12.0% vs. 26.5%). A logistic regression analysis showed that the odds ratio for DPN was 2.63-fold higher among people with IAH, compared with those without IAH, but there were no differences in other complications or by HbA1c levels.
• Treatment with continuous subcutaneous insulin therapy (an insulin pump) was significantly less prevalent in the IAH group, compared with those without IAH (23.6% vs 39.5%), with an adjusted odds ratio of 0.48. The two subgroups showed no differences in use of continuous glucose monitoring, used by 56% of the people in each of the two subgroups.
• The two subgroups showed no differences in their healthy lifestyle score, sleep debt, or rates of excessive drinking.
• Mean autonomic symptom scores for both sweating and shaking were significantly reduced in the IAH group, but no between-group differences appeared for palpations or hunger.
• All mean neuroglycopenic symptom scores were significantly lower in those without IAH, including confusion and speech difficulty.
• Scores for measures of diabetes distress and for the worry component of the fear of hypoglycemia were significantly higher in the IAH group, but there were no differences in other psychological measures.
• Higher were significantly associated with decreased IAH risk with a calculated odds ratio of 0.54, but other aspects of hypoglycemia problem-solving such as detection control, goal setting, and strategy evaluation showed no significant links.

Limitations

• The study used a cross-sectional design, which is not suited to making causal inferences.
• The authors characterized DPN as either present or absent. They did not evaluate or analyze the severity of peripheral neuropathy.
• The authors evaluated diabetic cardiac autonomic neuropathy (DCAN) by a person’s coefficient of variation of R-R intervals, and definitive diagnosis of DCAN required at least two positive results on a cardiac autonomic test. More vigorous evaluation using a more definitive assessment of DCAN is needed to relate DCAN and IAH status.

Disclosures

• The study received no commercial funding.
• The authors have disclosed no relevant financial relationships.

This is a summary of a preprint research study, “Protective and risk factors of impaired awareness of hypoglycemia in patients with type 1 diabetes: a cross- sectional analysis of baseline data from the PR-IAH study,” written by researchers at several hospitals in Japan, all affiliated with the National Hospital Organization, on Research Square. The study has not yet been peer reviewed. The full text of the study can be found on researchsquare.com.

A version of this article first appeared on Medscape.com.

Researchers published the study covered in this summary on researchsquare.com as a preprint that has not yet been peer reviewed.

Key takeaways

• In Japanese adults with type 1 diabetes insulin-pump treatment (continuous subcutaneous insulin infusion) and higher problem-solving perception appear protective against impaired awareness of hypoglycemia (IAH), while diabetic peripheral neuropathy (DPN) is associated with increased risk.
• Diabetes distress and fear of hypoglycemia are common in people with IAH.

Why this matters

• Adults with type 1 diabetes and IAH have a reduced ability to perceive hypoglycemic symptoms and are at risk of severe hypoglycemic events because they are unable to take immediate corrective action.
• This is the first study to identify protective factors and risk factors of IAH in Japanese adults with type 1 diabetes.
• People with IAH may plan to loosen tight glucose management and intentionally omit insulin injection to prevent severe hypoglycemia.
• The information in this report may help improve the management of people with problematic hypoglycemia, the authors suggested. Treatment with an insulin pump and structured education aimed at improving problem-solving skills may be useful interventions for adults with type 1 diabetes and IAH, they suggested.

Study design

• The study involved a cross-sectional analysis of 288 Japanese adults with type 1 diabetes who averaged 50 years old, had diabetes for an average of about 18 years, had an average hemoglobin A1c at baseline of 7.7%, and included about 37% men and 63% women.
• The cohort included 55 people with IAH (19%) and 233 with no impairment of their hypoglycemia awareness, based on their score on the .

Key results

• DPN was significantly more prevalent in the IAH group than in the control group (12.0% vs. 26.5%). A logistic regression analysis showed that the odds ratio for DPN was 2.63-fold higher among people with IAH, compared with those without IAH, but there were no differences in other complications or by HbA1c levels.
• Treatment with continuous subcutaneous insulin therapy (an insulin pump) was significantly less prevalent in the IAH group, compared with those without IAH (23.6% vs 39.5%), with an adjusted odds ratio of 0.48. The two subgroups showed no differences in use of continuous glucose monitoring, used by 56% of the people in each of the two subgroups.
• The two subgroups showed no differences in their healthy lifestyle score, sleep debt, or rates of excessive drinking.
• Mean autonomic symptom scores for both sweating and shaking were significantly reduced in the IAH group, but no between-group differences appeared for palpations or hunger.
• All mean neuroglycopenic symptom scores were significantly lower in those without IAH, including confusion and speech difficulty.
• Scores for measures of diabetes distress and for the worry component of the fear of hypoglycemia were significantly higher in the IAH group, but there were no differences in other psychological measures.
• Higher were significantly associated with decreased IAH risk with a calculated odds ratio of 0.54, but other aspects of hypoglycemia problem-solving such as detection control, goal setting, and strategy evaluation showed no significant links.

Limitations

• The study used a cross-sectional design, which is not suited to making causal inferences.
• The authors characterized DPN as either present or absent. They did not evaluate or analyze the severity of peripheral neuropathy.
• The authors evaluated diabetic cardiac autonomic neuropathy (DCAN) by a person’s coefficient of variation of R-R intervals, and definitive diagnosis of DCAN required at least two positive results on a cardiac autonomic test. More vigorous evaluation using a more definitive assessment of DCAN is needed to relate DCAN and IAH status.

Disclosures

• The study received no commercial funding.
• The authors have disclosed no relevant financial relationships.

This is a summary of a preprint research study, “Protective and risk factors of impaired awareness of hypoglycemia in patients with type 1 diabetes: a cross- sectional analysis of baseline data from the PR-IAH study,” written by researchers at several hospitals in Japan, all affiliated with the National Hospital Organization, on Research Square. The study has not yet been peer reviewed. The full text of the study can be found on researchsquare.com.

A version of this article first appeared on Medscape.com.

Researchers published the study covered in this summary on researchsquare.com as a preprint that has not yet been peer reviewed.

Key takeaways

• In Japanese adults with type 1 diabetes insulin-pump treatment (continuous subcutaneous insulin infusion) and higher problem-solving perception appear protective against impaired awareness of hypoglycemia (IAH), while diabetic peripheral neuropathy (DPN) is associated with increased risk.
• Diabetes distress and fear of hypoglycemia are common in people with IAH.

Why this matters

• Adults with type 1 diabetes and IAH have a reduced ability to perceive hypoglycemic symptoms and are at risk of severe hypoglycemic events because they are unable to take immediate corrective action.
• This is the first study to identify protective factors and risk factors of IAH in Japanese adults with type 1 diabetes.
• People with IAH may plan to loosen tight glucose management and intentionally omit insulin injection to prevent severe hypoglycemia.
• The information in this report may help improve the management of people with problematic hypoglycemia, the authors suggested. Treatment with an insulin pump and structured education aimed at improving problem-solving skills may be useful interventions for adults with type 1 diabetes and IAH, they suggested.

Study design

• The study involved a cross-sectional analysis of 288 Japanese adults with type 1 diabetes who averaged 50 years old, had diabetes for an average of about 18 years, had an average hemoglobin A1c at baseline of 7.7%, and included about 37% men and 63% women.
• The cohort included 55 people with IAH (19%) and 233 with no impairment of their hypoglycemia awareness, based on their score on the .

Key results

• DPN was significantly more prevalent in the IAH group than in the control group (12.0% vs. 26.5%). A logistic regression analysis showed that the odds ratio for DPN was 2.63-fold higher among people with IAH, compared with those without IAH, but there were no differences in other complications or by HbA1c levels.
• Treatment with continuous subcutaneous insulin therapy (an insulin pump) was significantly less prevalent in the IAH group, compared with those without IAH (23.6% vs 39.5%), with an adjusted odds ratio of 0.48. The two subgroups showed no differences in use of continuous glucose monitoring, used by 56% of the people in each of the two subgroups.
• The two subgroups showed no differences in their healthy lifestyle score, sleep debt, or rates of excessive drinking.
• Mean autonomic symptom scores for both sweating and shaking were significantly reduced in the IAH group, but no between-group differences appeared for palpations or hunger.
• All mean neuroglycopenic symptom scores were significantly lower in those without IAH, including confusion and speech difficulty.
• Scores for measures of diabetes distress and for the worry component of the fear of hypoglycemia were significantly higher in the IAH group, but there were no differences in other psychological measures.
• Higher were significantly associated with decreased IAH risk with a calculated odds ratio of 0.54, but other aspects of hypoglycemia problem-solving such as detection control, goal setting, and strategy evaluation showed no significant links.

Limitations

• The study used a cross-sectional design, which is not suited to making causal inferences.
• The authors characterized DPN as either present or absent. They did not evaluate or analyze the severity of peripheral neuropathy.
• The authors evaluated diabetic cardiac autonomic neuropathy (DCAN) by a person’s coefficient of variation of R-R intervals, and definitive diagnosis of DCAN required at least two positive results on a cardiac autonomic test. More vigorous evaluation using a more definitive assessment of DCAN is needed to relate DCAN and IAH status.

Disclosures

• The study received no commercial funding.
• The authors have disclosed no relevant financial relationships.

This is a summary of a preprint research study, “Protective and risk factors of impaired awareness of hypoglycemia in patients with type 1 diabetes: a cross- sectional analysis of baseline data from the PR-IAH study,” written by researchers at several hospitals in Japan, all affiliated with the National Hospital Organization, on Research Square. The study has not yet been peer reviewed. The full text of the study can be found on researchsquare.com.

A version of this article first appeared on Medscape.com.

A new clinical practice update from the American Gastroenterological Association offers practical advice around surveillance and use of new screening technologies for Barrett’s esophagus.

The AGA clinical practice update, published in Clinical Gastroenterology and Hepatology comes from the AGA’s Center for GI Innovation and Technology. It offers 15 best practice advice statements based on expert review of existing literature combined with discussion and expert opinion. The aim is “to provide an update on advances and innovation” but not to replace current guidelines.

“Guidelines operate on rigorous methodology which requires the use of [Grading of Recommendations, Assessment, Development and Evaluation] methodology and a higher level of evidence. In gastroenterology especially, innovation is moving quickly and there’s no way for patients to reap their benefits if clinical practice was dictated by guidelines alone. That said, we do need documents that support and drive innovation in clinical practice,” corresponding author Srinadh Komanduri, MD, professor of medicine and surgery in the division of gastroenterology and hepatology at Northwestern University, Chicago, told this news publication.

Asked to comment, Vivek Kaul, MD, the Segal-Watson Professor of Medicine in the Center for Advanced Therapeutic Endoscopy in the division of gastroenterology and hepatology at the University of Rochester (N.Y.) Medical Center, said that the document is “an important attempt to not only present the available scientific literature in a very concise and understandable manner, but it goes above and beyond that in terms of diving into some novel paradigms and technologies and procedures that are either emerging or will be emerging in the near future.”
 

Improving detection by dropping GERD requirement

The first of the 15 statements may also be the most paradigm shifting: The panel suggests screening via standard upper endoscopy of people with at least three risk factors for Barrett’s esophagus and esophageal adenocarcinoma, including those who are male, are non-Hispanic White, are aged above 50 years, and have a history of smoking, chronic gastroesophageal reflux disease (GERD), obesity, or a family history of Barrett’s esophagus or esophageal adenocarcinoma.

This represents a departure from all current guidelines, which stipulate GERD as a necessary prerequisite for screening. But the reason is simple, according to the authors: A majority of patients diagnosed with esophageal cancer never experience classic GERD symptoms.

“There is growing evidence in high-level publications over the last couple of years that reflux is not the ideal predictor, based on odds, for development of Barrett’s esophagus. So the consensus among the experts was that we need to remove GERD as an absolute prerequisite or we’re never going to make progress. In order to make an impact on the rise of esophageal adenocarcinoma we have to increase the denominator of patients we are seeing,” Dr. Komanduri explained.

While it might be difficult to screen every White male over 50 years of age, the data do suggest screening those who also have obesity and/or are current smokers. “That’s a perfect subset you might want to start with. There are permutations that have greater value that don’t occupy unnecessary resource utilization. Most critical are the family history of esophageal cancer or Barrett’s esophagus,” he noted.

Dr. Kaul said that a one-time Barrett’s esophagus screening of all White males over 50 years old “is not unreasonable, especially given the rising rates of esophageal cancer.”

However, he also noted, “The feasibility, preferred screening modality, incremental costs, and yield of this new strategy will need to be studied further. Access to GI endoscopy in the postpandemic world is already a concern and will need to be factored into execution of this [advice statement] and will likely impact adoption in some way.”

For his part, Dr. Komanduri said that more investigation will be needed to validate which patients most benefit from screening and that the AGA is planning educational programs for clinicians about interpreting this new paradigm.
 

New technology could make screening easier and cheaper

The availability of nonendoscopic cell collection devices, including the swallowable Cytosponge (Medtronic), EsoCheck (Lucid), and EsoCap (Capnostics) could help make screening for Barrett’s esophagus easier and more cost effective. They are designed for in-office use and don’t require sedation. Each one is currently in various stages of development and clinical trials. As of now they’re approved in the United States only for cell collection but not for Barrett’s esophagus screening, but their use is endorsed by some guidelines. The Cytosponge in particular is widely available and has been used extensively in the United Kingdom.

Dr. Kaul commented, “While there is a need for nonendoscopic screening devices, the ideal patient population and practice setting for administration of these devices has not been clearly defined. Also, who will be delivering these tests: Primary care or gastroenterology providers? These devices ... represent a major step forward and a novel paradigm for Barrett’s esophagus screening, and the only platform that non-GI providers could use.”
 

Virtual chromoendoscopy: A must have in 2022

A third best practice advice statement shouldn’t be controversial because it’s in other guidelines already, but data show clinicians aren’t always doing it: Performing screening and surveillance endoscopic examinations using virtual chromoendoscopy in addition to high-definition white light endoscopy, with adequate time spent inspecting the Barrett’s segment. The majority of data supporting this is for narrow-band imaging only.

“The blue light lets you pick up early mucosal and vascular changes which might represent dysplastic lesions. It’s not a question of should. It’s a medicolegal slam dunk; you must do it. It’s been a guideline recommendation in the last few years, and it’s just a switch on the scope. It doesn’t require separate equipment, yet people are often still skipping it,” Dr. Komanduri said.

Indeed, Dr. Kaul concurred, “The importance of a high quality, meticulous endoscopic examination for screening and surveillance in Barrett’s esophagus cannot be overemphasized.”
 

‘Finally pushing the needle in the right direction’

The overall goals, Dr. Komanduri said, are “increasing the denominator, using less invasive screening, but finding more patients. If we find more patients we’ll need to stratify their risk. We hope that all these things eventually tie together in a nice story, all with the aim of preventing an invasive cancer that can’t be treated.”

He believes the new update “is a pivotal document in this field that’s going to be a paradigm changer. A lot of aspects need further validation. It’s by no means the end. But I think we’re finally pushing the needle in the right direction as things move forward with innovation.”

Dr. Kaul agrees. “It’s highlighting the principles that may become established paradigms in the future.”

Dr. Komanduri and the other authors of the update reported relationships, including consulting and research support, with companies like Boston Scientific, Medtronic, Virgo Video Solutions, and Castle Biosciences. Dr. Kaul serves as a consultant and advisory board member for CDx Diagnostics, an advisory board member for Castle Biosciences, and an investigator for Lucid Diagnostics.

A new clinical practice update from the American Gastroenterological Association offers practical advice around surveillance and use of new screening technologies for Barrett’s esophagus.

The AGA clinical practice update, published in Clinical Gastroenterology and Hepatology comes from the AGA’s Center for GI Innovation and Technology. It offers 15 best practice advice statements based on expert review of existing literature combined with discussion and expert opinion. The aim is “to provide an update on advances and innovation” but not to replace current guidelines.

“Guidelines operate on rigorous methodology which requires the use of [Grading of Recommendations, Assessment, Development and Evaluation] methodology and a higher level of evidence. In gastroenterology especially, innovation is moving quickly and there’s no way for patients to reap their benefits if clinical practice was dictated by guidelines alone. That said, we do need documents that support and drive innovation in clinical practice,” corresponding author Srinadh Komanduri, MD, professor of medicine and surgery in the division of gastroenterology and hepatology at Northwestern University, Chicago, told this news publication.

Asked to comment, Vivek Kaul, MD, the Segal-Watson Professor of Medicine in the Center for Advanced Therapeutic Endoscopy in the division of gastroenterology and hepatology at the University of Rochester (N.Y.) Medical Center, said that the document is “an important attempt to not only present the available scientific literature in a very concise and understandable manner, but it goes above and beyond that in terms of diving into some novel paradigms and technologies and procedures that are either emerging or will be emerging in the near future.”
 

Improving detection by dropping GERD requirement

The first of the 15 statements may also be the most paradigm shifting: The panel suggests screening via standard upper endoscopy of people with at least three risk factors for Barrett’s esophagus and esophageal adenocarcinoma, including those who are male, are non-Hispanic White, are aged above 50 years, and have a history of smoking, chronic gastroesophageal reflux disease (GERD), obesity, or a family history of Barrett’s esophagus or esophageal adenocarcinoma.

This represents a departure from all current guidelines, which stipulate GERD as a necessary prerequisite for screening. But the reason is simple, according to the authors: A majority of patients diagnosed with esophageal cancer never experience classic GERD symptoms.

“There is growing evidence in high-level publications over the last couple of years that reflux is not the ideal predictor, based on odds, for development of Barrett’s esophagus. So the consensus among the experts was that we need to remove GERD as an absolute prerequisite or we’re never going to make progress. In order to make an impact on the rise of esophageal adenocarcinoma we have to increase the denominator of patients we are seeing,” Dr. Komanduri explained.

While it might be difficult to screen every White male over 50 years of age, the data do suggest screening those who also have obesity and/or are current smokers. “That’s a perfect subset you might want to start with. There are permutations that have greater value that don’t occupy unnecessary resource utilization. Most critical are the family history of esophageal cancer or Barrett’s esophagus,” he noted.

Dr. Kaul said that a one-time Barrett’s esophagus screening of all White males over 50 years old “is not unreasonable, especially given the rising rates of esophageal cancer.”

However, he also noted, “The feasibility, preferred screening modality, incremental costs, and yield of this new strategy will need to be studied further. Access to GI endoscopy in the postpandemic world is already a concern and will need to be factored into execution of this [advice statement] and will likely impact adoption in some way.”

For his part, Dr. Komanduri said that more investigation will be needed to validate which patients most benefit from screening and that the AGA is planning educational programs for clinicians about interpreting this new paradigm.
 

New technology could make screening easier and cheaper

The availability of nonendoscopic cell collection devices, including the swallowable Cytosponge (Medtronic), EsoCheck (Lucid), and EsoCap (Capnostics) could help make screening for Barrett’s esophagus easier and more cost effective. They are designed for in-office use and don’t require sedation. Each one is currently in various stages of development and clinical trials. As of now they’re approved in the United States only for cell collection but not for Barrett’s esophagus screening, but their use is endorsed by some guidelines. The Cytosponge in particular is widely available and has been used extensively in the United Kingdom.

Dr. Kaul commented, “While there is a need for nonendoscopic screening devices, the ideal patient population and practice setting for administration of these devices has not been clearly defined. Also, who will be delivering these tests: Primary care or gastroenterology providers? These devices ... represent a major step forward and a novel paradigm for Barrett’s esophagus screening, and the only platform that non-GI providers could use.”
 

Virtual chromoendoscopy: A must have in 2022

A third best practice advice statement shouldn’t be controversial because it’s in other guidelines already, but data show clinicians aren’t always doing it: Performing screening and surveillance endoscopic examinations using virtual chromoendoscopy in addition to high-definition white light endoscopy, with adequate time spent inspecting the Barrett’s segment. The majority of data supporting this is for narrow-band imaging only.

“The blue light lets you pick up early mucosal and vascular changes which might represent dysplastic lesions. It’s not a question of should. It’s a medicolegal slam dunk; you must do it. It’s been a guideline recommendation in the last few years, and it’s just a switch on the scope. It doesn’t require separate equipment, yet people are often still skipping it,” Dr. Komanduri said.

Indeed, Dr. Kaul concurred, “The importance of a high quality, meticulous endoscopic examination for screening and surveillance in Barrett’s esophagus cannot be overemphasized.”
 

‘Finally pushing the needle in the right direction’

The overall goals, Dr. Komanduri said, are “increasing the denominator, using less invasive screening, but finding more patients. If we find more patients we’ll need to stratify their risk. We hope that all these things eventually tie together in a nice story, all with the aim of preventing an invasive cancer that can’t be treated.”

He believes the new update “is a pivotal document in this field that’s going to be a paradigm changer. A lot of aspects need further validation. It’s by no means the end. But I think we’re finally pushing the needle in the right direction as things move forward with innovation.”

Dr. Kaul agrees. “It’s highlighting the principles that may become established paradigms in the future.”

Dr. Komanduri and the other authors of the update reported relationships, including consulting and research support, with companies like Boston Scientific, Medtronic, Virgo Video Solutions, and Castle Biosciences. Dr. Kaul serves as a consultant and advisory board member for CDx Diagnostics, an advisory board member for Castle Biosciences, and an investigator for Lucid Diagnostics.

A new clinical practice update from the American Gastroenterological Association offers practical advice around surveillance and use of new screening technologies for Barrett’s esophagus.

The AGA clinical practice update, published in Clinical Gastroenterology and Hepatology comes from the AGA’s Center for GI Innovation and Technology. It offers 15 best practice advice statements based on expert review of existing literature combined with discussion and expert opinion. The aim is “to provide an update on advances and innovation” but not to replace current guidelines.

“Guidelines operate on rigorous methodology which requires the use of [Grading of Recommendations, Assessment, Development and Evaluation] methodology and a higher level of evidence. In gastroenterology especially, innovation is moving quickly and there’s no way for patients to reap their benefits if clinical practice was dictated by guidelines alone. That said, we do need documents that support and drive innovation in clinical practice,” corresponding author Srinadh Komanduri, MD, professor of medicine and surgery in the division of gastroenterology and hepatology at Northwestern University, Chicago, told this news publication.

Asked to comment, Vivek Kaul, MD, the Segal-Watson Professor of Medicine in the Center for Advanced Therapeutic Endoscopy in the division of gastroenterology and hepatology at the University of Rochester (N.Y.) Medical Center, said that the document is “an important attempt to not only present the available scientific literature in a very concise and understandable manner, but it goes above and beyond that in terms of diving into some novel paradigms and technologies and procedures that are either emerging or will be emerging in the near future.”
 

Improving detection by dropping GERD requirement

The first of the 15 statements may also be the most paradigm shifting: The panel suggests screening via standard upper endoscopy of people with at least three risk factors for Barrett’s esophagus and esophageal adenocarcinoma, including those who are male, are non-Hispanic White, are aged above 50 years, and have a history of smoking, chronic gastroesophageal reflux disease (GERD), obesity, or a family history of Barrett’s esophagus or esophageal adenocarcinoma.

This represents a departure from all current guidelines, which stipulate GERD as a necessary prerequisite for screening. But the reason is simple, according to the authors: A majority of patients diagnosed with esophageal cancer never experience classic GERD symptoms.

“There is growing evidence in high-level publications over the last couple of years that reflux is not the ideal predictor, based on odds, for development of Barrett’s esophagus. So the consensus among the experts was that we need to remove GERD as an absolute prerequisite or we’re never going to make progress. In order to make an impact on the rise of esophageal adenocarcinoma we have to increase the denominator of patients we are seeing,” Dr. Komanduri explained.

While it might be difficult to screen every White male over 50 years of age, the data do suggest screening those who also have obesity and/or are current smokers. “That’s a perfect subset you might want to start with. There are permutations that have greater value that don’t occupy unnecessary resource utilization. Most critical are the family history of esophageal cancer or Barrett’s esophagus,” he noted.

Dr. Kaul said that a one-time Barrett’s esophagus screening of all White males over 50 years old “is not unreasonable, especially given the rising rates of esophageal cancer.”

However, he also noted, “The feasibility, preferred screening modality, incremental costs, and yield of this new strategy will need to be studied further. Access to GI endoscopy in the postpandemic world is already a concern and will need to be factored into execution of this [advice statement] and will likely impact adoption in some way.”

For his part, Dr. Komanduri said that more investigation will be needed to validate which patients most benefit from screening and that the AGA is planning educational programs for clinicians about interpreting this new paradigm.
 

New technology could make screening easier and cheaper

The availability of nonendoscopic cell collection devices, including the swallowable Cytosponge (Medtronic), EsoCheck (Lucid), and EsoCap (Capnostics) could help make screening for Barrett’s esophagus easier and more cost effective. They are designed for in-office use and don’t require sedation. Each one is currently in various stages of development and clinical trials. As of now they’re approved in the United States only for cell collection but not for Barrett’s esophagus screening, but their use is endorsed by some guidelines. The Cytosponge in particular is widely available and has been used extensively in the United Kingdom.

Dr. Kaul commented, “While there is a need for nonendoscopic screening devices, the ideal patient population and practice setting for administration of these devices has not been clearly defined. Also, who will be delivering these tests: Primary care or gastroenterology providers? These devices ... represent a major step forward and a novel paradigm for Barrett’s esophagus screening, and the only platform that non-GI providers could use.”
 

Virtual chromoendoscopy: A must have in 2022

A third best practice advice statement shouldn’t be controversial because it’s in other guidelines already, but data show clinicians aren’t always doing it: Performing screening and surveillance endoscopic examinations using virtual chromoendoscopy in addition to high-definition white light endoscopy, with adequate time spent inspecting the Barrett’s segment. The majority of data supporting this is for narrow-band imaging only.

“The blue light lets you pick up early mucosal and vascular changes which might represent dysplastic lesions. It’s not a question of should. It’s a medicolegal slam dunk; you must do it. It’s been a guideline recommendation in the last few years, and it’s just a switch on the scope. It doesn’t require separate equipment, yet people are often still skipping it,” Dr. Komanduri said.

Indeed, Dr. Kaul concurred, “The importance of a high quality, meticulous endoscopic examination for screening and surveillance in Barrett’s esophagus cannot be overemphasized.”
 

‘Finally pushing the needle in the right direction’

The overall goals, Dr. Komanduri said, are “increasing the denominator, using less invasive screening, but finding more patients. If we find more patients we’ll need to stratify their risk. We hope that all these things eventually tie together in a nice story, all with the aim of preventing an invasive cancer that can’t be treated.”

He believes the new update “is a pivotal document in this field that’s going to be a paradigm changer. A lot of aspects need further validation. It’s by no means the end. But I think we’re finally pushing the needle in the right direction as things move forward with innovation.”

Dr. Kaul agrees. “It’s highlighting the principles that may become established paradigms in the future.”

Dr. Komanduri and the other authors of the update reported relationships, including consulting and research support, with companies like Boston Scientific, Medtronic, Virgo Video Solutions, and Castle Biosciences. Dr. Kaul serves as a consultant and advisory board member for CDx Diagnostics, an advisory board member for Castle Biosciences, and an investigator for Lucid Diagnostics.

Hormone therapy did not increase mortality in postmenopausal women treated for early-stage estrogen receptor–positive breast cancer, but, in longitudinal data from Denmark, there was a recurrence risk with vaginal estrogen therapy among those treated with aromatase inhibitors.

Genitourinary syndrome of menopause (GSM) – including vaginal dryness, burning, and urinary incontinence – is common in women treated for breast cancer. Adjuvant endocrine therapy, particularly aromatase inhibitors, can aggravate these symptoms. Both local and systemic estrogen therapy are recommended for alleviating GSM symptoms in healthy women, but concerns have been raised about their use in women with breast cancer. Previous studies examining this have suggested possible risks for breast cancer recurrence, but those studies have had several limitations including small samples and short follow-up, particularly for vaginal estrogen therapy.

In the new study, from a national Danish cohort of 8,461 postmenopausal women diagnosed between 1997 and 2004 and treated for early-stage invasive estrogen receptor–positive nonmetastatic breast cancer, neither systemic menopausal hormone therapy (MHT) nor local vaginal estrogen therapy (VET) were associated with an overall increased risk for either breast cancer recurrence or mortality. However, in the subset who had received an aromatase inhibitor – with or without tamoxifen – there was a statistically significant increased risk for breast cancer recurrence, but not mortality.

The results were published in the Journal of the National Cancer Institute.

“The data are reassuring for the majority of women with no adjuvant therapy or tamoxifen. But for those using adjuvant aromatase inhibitors, there might be a small risk,” study lead author Søren Cold, MD, PhD, senior oncologist in the department of oncology at Odense (Denmark) University Hospital, Odense, said in an interview.

Moreover, Dr. Cold noted, while this study didn’t find an increased recurrence risk with MHT for women taking aromatase inhibitors, other studies have. One in particular was stopped because of harm. The reason for the difference here is likely that the previous sample was small – just 133 women.

“Our study is mainly focusing on the use of vaginal estrogen. We had so few patients using systemic menopausal hormone therapy, those data don’t mean much. ... The risk with systemic therapy has been established. The vaginal use hasn’t been thoroughly studied before,” he noted.
 

Breast cancer recurrence elevated with VET and aromatase inhibitors

The study pool was 9,710 women who underwent complete resection for estrogen-positive breast cancer and were all allocated to 5 years of adjuvant endocrine treatment or no adjuvant treatment, according to guidelines. Overall, 3,112 received no adjuvant endocrine treatment, 2,007 were treated with tamoxifen only, 403 with an aromatase inhibitor, and 2,939 with a sequence of tamoxifen and an aromatase inhibitor.

After exclusion of 1,249 who had received VET or MHT prior to breast cancer diagnosis, there were 6,391 not prescribed any estrogen hormonal treatment, 1,957 prescribed VET, and 133 prescribed MHT with or without VET.

During an estimated median 9.8 years’ follow-up, 1,333 women (16%) had a breast cancer recurrence. Of those, 111 had received VET, 16 MHT, and 1,206 neither. Compared with those receiving no hormonal treatment, the adjusted risk of recurrence was similar for the VET users (hazard ratio, 1.08; 95% confidence interval, 0.89-1.32).

However, there was an increased risk for recurrence associated with initiating VET during aromatase inhibitor treatment (HR, 1.39, 95% CI, 1.04-1.85). For women receiving MHT, the adjusted relative risk of recurrence with aromatase inhibitors wasn’t significant (HR, 1.05; 95% CI, 0.62-1.78).

Overall, compared with women who never used hormonal treatment, the absolute 10-year breast cancer recurrence risk was 19.2% for never-users of VET or MHT, 15.4% in VET users, and 17.1% in MHT users.
 

No differences found for mortality

Of the 8,461 women in the study, 40% (3,370) died during an estimated median follow-up of 15.2 years. Of those, 497 had received VET, 47 MHT, and 2,826 neither. Compared with the never-users of estrogen therapy, the adjusted HR for overall survival in VET users was 0.78 (95% CI, 0.71-0.87). The analysis stratified by adjuvant endocrine therapy didn’t show an increase in VET users by use of aromatase inhibitors (aHR, 0.94, 95% CI, 0.70-1.26). The same was found for women prescribed MHT, compared with never-users (aHR, 0.94; 95% CI, 0.70-1.26).

Never-users of VET or MHT had an absolute 10-year overall survival of 73.8% versus 79.5% and 80.5% among the women who used VET or MHT, respectively.

Asked to comment, Nanette Santoro, MD, professor and E. Stewart Taylor Chair of Obstetrics & Gynecology at the University of Colorado at Denver, Aurora, said in an interview: “It is important to look at this issue. These findings raise but don’t answer the question that vaginal estradiol may not be as safe as we hope it is for women with breast cancer using an aromatase inhibitor.”

However, she also pointed out that “the overall increase in risk is not enormous; mortality risk was not increased. Women need to consider that there may be some risk associated with this option in their decision making about taking it. Having a satisfying sex life is also important for many women! It is really compassionate use for quality of life, so there is always that unknown element of risk in the discussion. That unknown risk has to be balanced against the benefit that the estrogen provides.”

And, Dr. Santoro also noted that the use of prescription data poses limitations. “It cannot tell us what was going on in the minds of the patient and the prescriber. There may be differences in the prescriber’s impression of the patient’s risk of recurrence that influenced the decision to provide a prescription. ... Women using AIs [aromatase inhibitors] often get pretty severe vaginal dryness symptoms and may need more estrogen to be comfortable with intercourse, but we really cannot tell this from what is in this paper.”

Indeed, Dr. Cold said: “We admit it’s not a randomized study, but we’ve done what was possible to take [confounding] factors into account, including age, tumor size, nodal status, histology, and comorbidities.”

He suggested that a potential therapeutic approach to reducing the recurrence risk might be to switch VET-treated women to tamoxifen after 2-3 years of aromatase inhibitors.

This work was supported by Breast Friends, a part of the Danish Cancer Society. Dr. Cold received support from Breast Friends for the current study. Some of the other coauthors have pharmaceutical company disclosures. Dr. Santoro is a member of the scientific advisory boards for Astellas, Menogenix, Que Oncology, and Amazon Ember, and is a consultant for Ansh Labs.

Hormone therapy did not increase mortality in postmenopausal women treated for early-stage estrogen receptor–positive breast cancer, but, in longitudinal data from Denmark, there was a recurrence risk with vaginal estrogen therapy among those treated with aromatase inhibitors.

Genitourinary syndrome of menopause (GSM) – including vaginal dryness, burning, and urinary incontinence – is common in women treated for breast cancer. Adjuvant endocrine therapy, particularly aromatase inhibitors, can aggravate these symptoms. Both local and systemic estrogen therapy are recommended for alleviating GSM symptoms in healthy women, but concerns have been raised about their use in women with breast cancer. Previous studies examining this have suggested possible risks for breast cancer recurrence, but those studies have had several limitations including small samples and short follow-up, particularly for vaginal estrogen therapy.

In the new study, from a national Danish cohort of 8,461 postmenopausal women diagnosed between 1997 and 2004 and treated for early-stage invasive estrogen receptor–positive nonmetastatic breast cancer, neither systemic menopausal hormone therapy (MHT) nor local vaginal estrogen therapy (VET) were associated with an overall increased risk for either breast cancer recurrence or mortality. However, in the subset who had received an aromatase inhibitor – with or without tamoxifen – there was a statistically significant increased risk for breast cancer recurrence, but not mortality.

The results were published in the Journal of the National Cancer Institute.

“The data are reassuring for the majority of women with no adjuvant therapy or tamoxifen. But for those using adjuvant aromatase inhibitors, there might be a small risk,” study lead author Søren Cold, MD, PhD, senior oncologist in the department of oncology at Odense (Denmark) University Hospital, Odense, said in an interview.

Moreover, Dr. Cold noted, while this study didn’t find an increased recurrence risk with MHT for women taking aromatase inhibitors, other studies have. One in particular was stopped because of harm. The reason for the difference here is likely that the previous sample was small – just 133 women.

“Our study is mainly focusing on the use of vaginal estrogen. We had so few patients using systemic menopausal hormone therapy, those data don’t mean much. ... The risk with systemic therapy has been established. The vaginal use hasn’t been thoroughly studied before,” he noted.
 

Breast cancer recurrence elevated with VET and aromatase inhibitors

The study pool was 9,710 women who underwent complete resection for estrogen-positive breast cancer and were all allocated to 5 years of adjuvant endocrine treatment or no adjuvant treatment, according to guidelines. Overall, 3,112 received no adjuvant endocrine treatment, 2,007 were treated with tamoxifen only, 403 with an aromatase inhibitor, and 2,939 with a sequence of tamoxifen and an aromatase inhibitor.

After exclusion of 1,249 who had received VET or MHT prior to breast cancer diagnosis, there were 6,391 not prescribed any estrogen hormonal treatment, 1,957 prescribed VET, and 133 prescribed MHT with or without VET.

During an estimated median 9.8 years’ follow-up, 1,333 women (16%) had a breast cancer recurrence. Of those, 111 had received VET, 16 MHT, and 1,206 neither. Compared with those receiving no hormonal treatment, the adjusted risk of recurrence was similar for the VET users (hazard ratio, 1.08; 95% confidence interval, 0.89-1.32).

However, there was an increased risk for recurrence associated with initiating VET during aromatase inhibitor treatment (HR, 1.39, 95% CI, 1.04-1.85). For women receiving MHT, the adjusted relative risk of recurrence with aromatase inhibitors wasn’t significant (HR, 1.05; 95% CI, 0.62-1.78).

Overall, compared with women who never used hormonal treatment, the absolute 10-year breast cancer recurrence risk was 19.2% for never-users of VET or MHT, 15.4% in VET users, and 17.1% in MHT users.
 

No differences found for mortality

Of the 8,461 women in the study, 40% (3,370) died during an estimated median follow-up of 15.2 years. Of those, 497 had received VET, 47 MHT, and 2,826 neither. Compared with the never-users of estrogen therapy, the adjusted HR for overall survival in VET users was 0.78 (95% CI, 0.71-0.87). The analysis stratified by adjuvant endocrine therapy didn’t show an increase in VET users by use of aromatase inhibitors (aHR, 0.94, 95% CI, 0.70-1.26). The same was found for women prescribed MHT, compared with never-users (aHR, 0.94; 95% CI, 0.70-1.26).

Never-users of VET or MHT had an absolute 10-year overall survival of 73.8% versus 79.5% and 80.5% among the women who used VET or MHT, respectively.

Asked to comment, Nanette Santoro, MD, professor and E. Stewart Taylor Chair of Obstetrics & Gynecology at the University of Colorado at Denver, Aurora, said in an interview: “It is important to look at this issue. These findings raise but don’t answer the question that vaginal estradiol may not be as safe as we hope it is for women with breast cancer using an aromatase inhibitor.”

However, she also pointed out that “the overall increase in risk is not enormous; mortality risk was not increased. Women need to consider that there may be some risk associated with this option in their decision making about taking it. Having a satisfying sex life is also important for many women! It is really compassionate use for quality of life, so there is always that unknown element of risk in the discussion. That unknown risk has to be balanced against the benefit that the estrogen provides.”

And, Dr. Santoro also noted that the use of prescription data poses limitations. “It cannot tell us what was going on in the minds of the patient and the prescriber. There may be differences in the prescriber’s impression of the patient’s risk of recurrence that influenced the decision to provide a prescription. ... Women using AIs [aromatase inhibitors] often get pretty severe vaginal dryness symptoms and may need more estrogen to be comfortable with intercourse, but we really cannot tell this from what is in this paper.”

Indeed, Dr. Cold said: “We admit it’s not a randomized study, but we’ve done what was possible to take [confounding] factors into account, including age, tumor size, nodal status, histology, and comorbidities.”

He suggested that a potential therapeutic approach to reducing the recurrence risk might be to switch VET-treated women to tamoxifen after 2-3 years of aromatase inhibitors.

This work was supported by Breast Friends, a part of the Danish Cancer Society. Dr. Cold received support from Breast Friends for the current study. Some of the other coauthors have pharmaceutical company disclosures. Dr. Santoro is a member of the scientific advisory boards for Astellas, Menogenix, Que Oncology, and Amazon Ember, and is a consultant for Ansh Labs.

Hormone therapy did not increase mortality in postmenopausal women treated for early-stage estrogen receptor–positive breast cancer, but, in longitudinal data from Denmark, there was a recurrence risk with vaginal estrogen therapy among those treated with aromatase inhibitors.

Genitourinary syndrome of menopause (GSM) – including vaginal dryness, burning, and urinary incontinence – is common in women treated for breast cancer. Adjuvant endocrine therapy, particularly aromatase inhibitors, can aggravate these symptoms. Both local and systemic estrogen therapy are recommended for alleviating GSM symptoms in healthy women, but concerns have been raised about their use in women with breast cancer. Previous studies examining this have suggested possible risks for breast cancer recurrence, but those studies have had several limitations including small samples and short follow-up, particularly for vaginal estrogen therapy.

In the new study, from a national Danish cohort of 8,461 postmenopausal women diagnosed between 1997 and 2004 and treated for early-stage invasive estrogen receptor–positive nonmetastatic breast cancer, neither systemic menopausal hormone therapy (MHT) nor local vaginal estrogen therapy (VET) were associated with an overall increased risk for either breast cancer recurrence or mortality. However, in the subset who had received an aromatase inhibitor – with or without tamoxifen – there was a statistically significant increased risk for breast cancer recurrence, but not mortality.

The results were published in the Journal of the National Cancer Institute.

“The data are reassuring for the majority of women with no adjuvant therapy or tamoxifen. But for those using adjuvant aromatase inhibitors, there might be a small risk,” study lead author Søren Cold, MD, PhD, senior oncologist in the department of oncology at Odense (Denmark) University Hospital, Odense, said in an interview.

Moreover, Dr. Cold noted, while this study didn’t find an increased recurrence risk with MHT for women taking aromatase inhibitors, other studies have. One in particular was stopped because of harm. The reason for the difference here is likely that the previous sample was small – just 133 women.

“Our study is mainly focusing on the use of vaginal estrogen. We had so few patients using systemic menopausal hormone therapy, those data don’t mean much. ... The risk with systemic therapy has been established. The vaginal use hasn’t been thoroughly studied before,” he noted.
 

Breast cancer recurrence elevated with VET and aromatase inhibitors

The study pool was 9,710 women who underwent complete resection for estrogen-positive breast cancer and were all allocated to 5 years of adjuvant endocrine treatment or no adjuvant treatment, according to guidelines. Overall, 3,112 received no adjuvant endocrine treatment, 2,007 were treated with tamoxifen only, 403 with an aromatase inhibitor, and 2,939 with a sequence of tamoxifen and an aromatase inhibitor.

After exclusion of 1,249 who had received VET or MHT prior to breast cancer diagnosis, there were 6,391 not prescribed any estrogen hormonal treatment, 1,957 prescribed VET, and 133 prescribed MHT with or without VET.

During an estimated median 9.8 years’ follow-up, 1,333 women (16%) had a breast cancer recurrence. Of those, 111 had received VET, 16 MHT, and 1,206 neither. Compared with those receiving no hormonal treatment, the adjusted risk of recurrence was similar for the VET users (hazard ratio, 1.08; 95% confidence interval, 0.89-1.32).

However, there was an increased risk for recurrence associated with initiating VET during aromatase inhibitor treatment (HR, 1.39, 95% CI, 1.04-1.85). For women receiving MHT, the adjusted relative risk of recurrence with aromatase inhibitors wasn’t significant (HR, 1.05; 95% CI, 0.62-1.78).

Overall, compared with women who never used hormonal treatment, the absolute 10-year breast cancer recurrence risk was 19.2% for never-users of VET or MHT, 15.4% in VET users, and 17.1% in MHT users.
 

No differences found for mortality

Of the 8,461 women in the study, 40% (3,370) died during an estimated median follow-up of 15.2 years. Of those, 497 had received VET, 47 MHT, and 2,826 neither. Compared with the never-users of estrogen therapy, the adjusted HR for overall survival in VET users was 0.78 (95% CI, 0.71-0.87). The analysis stratified by adjuvant endocrine therapy didn’t show an increase in VET users by use of aromatase inhibitors (aHR, 0.94, 95% CI, 0.70-1.26). The same was found for women prescribed MHT, compared with never-users (aHR, 0.94; 95% CI, 0.70-1.26).

Never-users of VET or MHT had an absolute 10-year overall survival of 73.8% versus 79.5% and 80.5% among the women who used VET or MHT, respectively.

Asked to comment, Nanette Santoro, MD, professor and E. Stewart Taylor Chair of Obstetrics & Gynecology at the University of Colorado at Denver, Aurora, said in an interview: “It is important to look at this issue. These findings raise but don’t answer the question that vaginal estradiol may not be as safe as we hope it is for women with breast cancer using an aromatase inhibitor.”

However, she also pointed out that “the overall increase in risk is not enormous; mortality risk was not increased. Women need to consider that there may be some risk associated with this option in their decision making about taking it. Having a satisfying sex life is also important for many women! It is really compassionate use for quality of life, so there is always that unknown element of risk in the discussion. That unknown risk has to be balanced against the benefit that the estrogen provides.”

And, Dr. Santoro also noted that the use of prescription data poses limitations. “It cannot tell us what was going on in the minds of the patient and the prescriber. There may be differences in the prescriber’s impression of the patient’s risk of recurrence that influenced the decision to provide a prescription. ... Women using AIs [aromatase inhibitors] often get pretty severe vaginal dryness symptoms and may need more estrogen to be comfortable with intercourse, but we really cannot tell this from what is in this paper.”

Indeed, Dr. Cold said: “We admit it’s not a randomized study, but we’ve done what was possible to take [confounding] factors into account, including age, tumor size, nodal status, histology, and comorbidities.”

He suggested that a potential therapeutic approach to reducing the recurrence risk might be to switch VET-treated women to tamoxifen after 2-3 years of aromatase inhibitors.

This work was supported by Breast Friends, a part of the Danish Cancer Society. Dr. Cold received support from Breast Friends for the current study. Some of the other coauthors have pharmaceutical company disclosures. Dr. Santoro is a member of the scientific advisory boards for Astellas, Menogenix, Que Oncology, and Amazon Ember, and is a consultant for Ansh Labs.

Vertex Pharmaceuticals has acquired ViaCyte, bringing together two of the leading biotechnology companies developing stem cell–derived islet cell replacement therapies for type 1 diabetes.

The $320 million cash purchase “will accelerate our goal of transforming, if not curing, type 1 diabetes by expanding our capabilities and bringing additional tools, technologies, and assets to our current stem cell-based programs,” said Vertex Chief Executive Officer and President Reshma Kewalramani, MD, in a company statement.

Last month, Vertex reported on a phase 1/2 multicenter clinical trial for two patients with type 1 diabetes who experienced improved blood glucose control with half doses of the company’s investigational allogeneic stem cell-derived islets (VX-880).

The first person to receive the product remained completely insulin-independent at 9 months post-transplant. A third patient has received the full targeted dose, but the data for this participant have yet to be reported.

For Viacyte’s part, last week the company announced that a clinical hold placed by the U.S. Food and Drug Administration on the trial has been lifted, allowing it to move forward with a planned total enrollment of 17 patients.

“The FDA requested additional information on the program, which we provided expeditiously. We are pleased that the hold has been lifted and look forward to continuing the Phase 1/2 trial in the U.S.,” a Vertex spokesperson told this news organization.

And a company official for ViaCyte presented results for three patients who received pancreatic precursor (PEC-01) cells derived from the company’s proprietary pluripotent stem cell line at the annual meeting of the Endocrine Society held in June. The cells are housed in an open delivery device implanted into a patient’s forearm. All three participants experienced improved blood glucose levels.

That presentation followed ViaCyte’s announcement in February that the first patient with type 1 diabetes had been dosed in a Phase 1 clinical trial of its investigational allogeneic, gene-edited, stem cell-derived product, VCTX210, developed in collaboration with CRISPR Therapeutics’ gene-editing technology. The aim is to generate islet cells that will produce insulin while avoiding recognition by the immune system, thus rendering immunosuppressive drugs unnecessary.

According to Vertex’s announcement, “The acquisition of ViaCyte provides Vertex with complementary assets, capabilities, and technologies, including additional human stem cell lines, intellectual property around stem cell differentiation, and Good Manufacturing Practice ... facilities for cell-based therapies that could accelerate Vertex’s ongoing type 1 diabetes programs. The acquisition also provides access to novel hypoimmune stem cell assets via the ViaCyte collaboration with CRISPR Therapeutics.”

In response to the announcement, the type 1 diabetes advocacy organization JDRF, which has funded the work of both companies, said in a statement that the acquisition “represents a significant stride in cures research for the type 1 diabetes community.”

“The coming together of two leaders in the cell-derived therapies field will undoubtedly accelerate the development of VX-880 by combining their resources, technologies, intellectual property, and more,” it added.

A third company developing stem cell–derived islet cell therapies, Sernova, said in a statement provided to this news organization: “We are very confident that bringing important game-changing technologies together, as we are seeing across the industry, will result in several viable technologies for the millions of people with type 1 diabetes ... We are thrilled that there are several technologies under development using different approaches that have the potential to provide a ‘functional cure’ for this disease.”

Vertex anticipates the acquisition will close later in 2022.

A version of this article first appeared on Medscape.com.

Vertex Pharmaceuticals has acquired ViaCyte, bringing together two of the leading biotechnology companies developing stem cell–derived islet cell replacement therapies for type 1 diabetes.

The $320 million cash purchase “will accelerate our goal of transforming, if not curing, type 1 diabetes by expanding our capabilities and bringing additional tools, technologies, and assets to our current stem cell-based programs,” said Vertex Chief Executive Officer and President Reshma Kewalramani, MD, in a company statement.

Last month, Vertex reported on a phase 1/2 multicenter clinical trial for two patients with type 1 diabetes who experienced improved blood glucose control with half doses of the company’s investigational allogeneic stem cell-derived islets (VX-880).

The first person to receive the product remained completely insulin-independent at 9 months post-transplant. A third patient has received the full targeted dose, but the data for this participant have yet to be reported.

For Viacyte’s part, last week the company announced that a clinical hold placed by the U.S. Food and Drug Administration on the trial has been lifted, allowing it to move forward with a planned total enrollment of 17 patients.

“The FDA requested additional information on the program, which we provided expeditiously. We are pleased that the hold has been lifted and look forward to continuing the Phase 1/2 trial in the U.S.,” a Vertex spokesperson told this news organization.

And a company official for ViaCyte presented results for three patients who received pancreatic precursor (PEC-01) cells derived from the company’s proprietary pluripotent stem cell line at the annual meeting of the Endocrine Society held in June. The cells are housed in an open delivery device implanted into a patient’s forearm. All three participants experienced improved blood glucose levels.

That presentation followed ViaCyte’s announcement in February that the first patient with type 1 diabetes had been dosed in a Phase 1 clinical trial of its investigational allogeneic, gene-edited, stem cell-derived product, VCTX210, developed in collaboration with CRISPR Therapeutics’ gene-editing technology. The aim is to generate islet cells that will produce insulin while avoiding recognition by the immune system, thus rendering immunosuppressive drugs unnecessary.

According to Vertex’s announcement, “The acquisition of ViaCyte provides Vertex with complementary assets, capabilities, and technologies, including additional human stem cell lines, intellectual property around stem cell differentiation, and Good Manufacturing Practice ... facilities for cell-based therapies that could accelerate Vertex’s ongoing type 1 diabetes programs. The acquisition also provides access to novel hypoimmune stem cell assets via the ViaCyte collaboration with CRISPR Therapeutics.”

In response to the announcement, the type 1 diabetes advocacy organization JDRF, which has funded the work of both companies, said in a statement that the acquisition “represents a significant stride in cures research for the type 1 diabetes community.”

“The coming together of two leaders in the cell-derived therapies field will undoubtedly accelerate the development of VX-880 by combining their resources, technologies, intellectual property, and more,” it added.

A third company developing stem cell–derived islet cell therapies, Sernova, said in a statement provided to this news organization: “We are very confident that bringing important game-changing technologies together, as we are seeing across the industry, will result in several viable technologies for the millions of people with type 1 diabetes ... We are thrilled that there are several technologies under development using different approaches that have the potential to provide a ‘functional cure’ for this disease.”

Vertex anticipates the acquisition will close later in 2022.

A version of this article first appeared on Medscape.com.

Vertex Pharmaceuticals has acquired ViaCyte, bringing together two of the leading biotechnology companies developing stem cell–derived islet cell replacement therapies for type 1 diabetes.

The $320 million cash purchase “will accelerate our goal of transforming, if not curing, type 1 diabetes by expanding our capabilities and bringing additional tools, technologies, and assets to our current stem cell-based programs,” said Vertex Chief Executive Officer and President Reshma Kewalramani, MD, in a company statement.

Last month, Vertex reported on a phase 1/2 multicenter clinical trial for two patients with type 1 diabetes who experienced improved blood glucose control with half doses of the company’s investigational allogeneic stem cell-derived islets (VX-880).

The first person to receive the product remained completely insulin-independent at 9 months post-transplant. A third patient has received the full targeted dose, but the data for this participant have yet to be reported.

For Viacyte’s part, last week the company announced that a clinical hold placed by the U.S. Food and Drug Administration on the trial has been lifted, allowing it to move forward with a planned total enrollment of 17 patients.

“The FDA requested additional information on the program, which we provided expeditiously. We are pleased that the hold has been lifted and look forward to continuing the Phase 1/2 trial in the U.S.,” a Vertex spokesperson told this news organization.

And a company official for ViaCyte presented results for three patients who received pancreatic precursor (PEC-01) cells derived from the company’s proprietary pluripotent stem cell line at the annual meeting of the Endocrine Society held in June. The cells are housed in an open delivery device implanted into a patient’s forearm. All three participants experienced improved blood glucose levels.

That presentation followed ViaCyte’s announcement in February that the first patient with type 1 diabetes had been dosed in a Phase 1 clinical trial of its investigational allogeneic, gene-edited, stem cell-derived product, VCTX210, developed in collaboration with CRISPR Therapeutics’ gene-editing technology. The aim is to generate islet cells that will produce insulin while avoiding recognition by the immune system, thus rendering immunosuppressive drugs unnecessary.

According to Vertex’s announcement, “The acquisition of ViaCyte provides Vertex with complementary assets, capabilities, and technologies, including additional human stem cell lines, intellectual property around stem cell differentiation, and Good Manufacturing Practice ... facilities for cell-based therapies that could accelerate Vertex’s ongoing type 1 diabetes programs. The acquisition also provides access to novel hypoimmune stem cell assets via the ViaCyte collaboration with CRISPR Therapeutics.”

In response to the announcement, the type 1 diabetes advocacy organization JDRF, which has funded the work of both companies, said in a statement that the acquisition “represents a significant stride in cures research for the type 1 diabetes community.”

“The coming together of two leaders in the cell-derived therapies field will undoubtedly accelerate the development of VX-880 by combining their resources, technologies, intellectual property, and more,” it added.

A third company developing stem cell–derived islet cell therapies, Sernova, said in a statement provided to this news organization: “We are very confident that bringing important game-changing technologies together, as we are seeing across the industry, will result in several viable technologies for the millions of people with type 1 diabetes ... We are thrilled that there are several technologies under development using different approaches that have the potential to provide a ‘functional cure’ for this disease.”

Vertex anticipates the acquisition will close later in 2022.

A version of this article first appeared on Medscape.com.