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Hand deformity happens early in children with dystrophic epidermolysis bullosa
London – A predictable course of hand contracture was seen in a U.K. study of children with recessive dystrophic epidermolysis bullosa (RDEB), with all children experiencing moderate or severe hand deformity by the age of 12 years.
This stark finding, reported at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA), highlighted the importance of intervening early with surgical methods that aim to prevent the pseudosyndactyly, or “mitten” hand deformity, which is an unfortunate characteristic of the genetic skin condition.
The investigative team, from the plastic and reconstructive surgery department at Great Ormond Street Hospital for Children NHS Trust, London, presented data from a retrospective case review of 24 children who attended their specialist pediatric EB center between 2010 and 2019. Of these, seven children had surgery to release hand contractures.
A total of 250 hand assessments were made via the novel Assessment of the Component Hand Contractures in Epidermolysis Bullosa (ACE). The assessment provides a hand deformity grade (HDG) – none, mild, moderate, and severe –based on the typical contractures that are seen in RDEB, such as between the fingers (web space contractures), finger flexion contractures, and thumb adduction contractures.
Using the ACE tool, “we found four significant time points regarding hand contracture development,” Catherine Miller, one of the team’s occupational therapists, said during a poster presentation. At birth, none of the children had any signs of hand deformity, but by 2 years of age half had mild hand contracture. By age 6, all children had some form of hand deformity, Ms. Miller said, and by age 12 all had moderate to severe hand deformity, “so adding to the data that hand deformities really are inevitable.”
Other findings were that the thumb and finger web spaces were the first to contract, Ms. Miller said. “So they tend to develop earlier and progress relatively slowly.” By contrast the finger flexion contractures occurred later on, “but progress more relatively rapidly,” she observed.
“Our data are limited as not every child is included at every age, and out tool has not yet been validated,” Ms. Miller and team acknowledged in the poster. “We assume that hand contractures do not improve, and therefore have included operated hands (mean age 6 years) at their last preoperative HDG in order to represent older children and more advanced hand deformities.”
In an interview, Ms. Miller noted that families have a lot going on when their newborn is diagnosed with RDEB, so introducing the idea that there will be substantial hand deformities in the future “is a difficult conversation. We have to take that gently.”
There are nonsurgical approaches to keeping the hands open, such as “encouraging them to open their hands in play, daily stretches; we can make splints with a silicon substance and other thermoplastic materials,” Ms. Miller said.
Hand surgery is a ‘blunt tool’
“The primary problem, of course, is the dermal fibrosis that we see that creates scarring and secondary problems,” said Gill Smith, a plastic surgery consultant who works with Ms. Miller at the hospital.
“In an ideal world, you would bandage up [the children] so that they could never injure their hands, but then they couldn’t use them, they couldn’t grow properly, and they could not develop,” Ms. Smith said in an oral presentation about hand surgery in children with RDEB. “You do not want them to get to the secondary stage, because the secondary stage is a real problem – you get all these impairments of hand function – pseudosyndactyly, finger contraction, and first web contracture, and ending up in a ‘mitten’ hand.”
Surgery is a very “crude” and “blunt tool,” Ms. Smith emphasized. Prevention is key, and perhaps in the future gene therapy, mesenchymal stem cells, and the like will mean that there is less need for hand surgery, she intimated. Until then, there are some things that can be done surgically – such as wrapping the hands, using gloves to protect the skin, stretching out the web spaces of the palm, and using splints. “All of these things we are trying to improve all the time, and come up with new ideas.”
The question is when to intervene? Ms. Smith said that in any other type of hand surgery, particularly in children where growth and function might be affected, the aim would be to “go in early.” In children with RDEB, however, the timing is not so clear: “Should we be going in early, before secondary joint changes, before we get secondary tendon shortening?” Perhaps this would result in less complex surgery, she suggested, but “it is a really huge deal for families and for children. For the moment we are still only really doing it when there [are] quite significant functional difficulties.”
When it comes to the type of surgery done to release the hands, “everyone has variants on the release technique,” but none are known to be better than any other, Ms. Smith said. Surgical release deals with consequences of dermal fibrosis but also creates more fibrosis, she cautioned.
Effects of hand surgery do not last long
How long the surgery’s effect will last is “what everyone wants to know, and I don’t think anyone has found a really good answer. It is variable, but unfortunately it’s a lot shorter than we’d like,” said Ms. Smith.
Indeed, data in another poster presentation by Ms. Smith and colleagues showed that the situation can be ‘back to square one’ within just a couple of years. Of the seven patients who had surgery at a mean 7 years of age (range 6-10 years), “most had returned to their original total score by 2 years post surgery,” the team wrote. All children “were initially happy with both appearance and function after surgery” they added; however, “happiness gradually decreased with time as they lost function and their scores increased with recurrence of contracture.”
The team noted that “sometimes after surgery a different component of the hand contracture worsened but function was preserved.”
While the ACE tool used by the team has not yet been validated, they believe it to be “a systematic tool with a structured method of administration.” As such it can help with informed decision making, they believe, and it could be used with functional measures to see how hand contractures might be impacting hand function and quality of life.
The ACE tool can be downloaded for free from the GOSH website.
SOURCE: Jessop N et al. EB 2020. Posters 42 and 43; Smith G et al. Poster 63.
London – A predictable course of hand contracture was seen in a U.K. study of children with recessive dystrophic epidermolysis bullosa (RDEB), with all children experiencing moderate or severe hand deformity by the age of 12 years.
This stark finding, reported at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA), highlighted the importance of intervening early with surgical methods that aim to prevent the pseudosyndactyly, or “mitten” hand deformity, which is an unfortunate characteristic of the genetic skin condition.
The investigative team, from the plastic and reconstructive surgery department at Great Ormond Street Hospital for Children NHS Trust, London, presented data from a retrospective case review of 24 children who attended their specialist pediatric EB center between 2010 and 2019. Of these, seven children had surgery to release hand contractures.
A total of 250 hand assessments were made via the novel Assessment of the Component Hand Contractures in Epidermolysis Bullosa (ACE). The assessment provides a hand deformity grade (HDG) – none, mild, moderate, and severe –based on the typical contractures that are seen in RDEB, such as between the fingers (web space contractures), finger flexion contractures, and thumb adduction contractures.
Using the ACE tool, “we found four significant time points regarding hand contracture development,” Catherine Miller, one of the team’s occupational therapists, said during a poster presentation. At birth, none of the children had any signs of hand deformity, but by 2 years of age half had mild hand contracture. By age 6, all children had some form of hand deformity, Ms. Miller said, and by age 12 all had moderate to severe hand deformity, “so adding to the data that hand deformities really are inevitable.”
Other findings were that the thumb and finger web spaces were the first to contract, Ms. Miller said. “So they tend to develop earlier and progress relatively slowly.” By contrast the finger flexion contractures occurred later on, “but progress more relatively rapidly,” she observed.
“Our data are limited as not every child is included at every age, and out tool has not yet been validated,” Ms. Miller and team acknowledged in the poster. “We assume that hand contractures do not improve, and therefore have included operated hands (mean age 6 years) at their last preoperative HDG in order to represent older children and more advanced hand deformities.”
In an interview, Ms. Miller noted that families have a lot going on when their newborn is diagnosed with RDEB, so introducing the idea that there will be substantial hand deformities in the future “is a difficult conversation. We have to take that gently.”
There are nonsurgical approaches to keeping the hands open, such as “encouraging them to open their hands in play, daily stretches; we can make splints with a silicon substance and other thermoplastic materials,” Ms. Miller said.
Hand surgery is a ‘blunt tool’
“The primary problem, of course, is the dermal fibrosis that we see that creates scarring and secondary problems,” said Gill Smith, a plastic surgery consultant who works with Ms. Miller at the hospital.
“In an ideal world, you would bandage up [the children] so that they could never injure their hands, but then they couldn’t use them, they couldn’t grow properly, and they could not develop,” Ms. Smith said in an oral presentation about hand surgery in children with RDEB. “You do not want them to get to the secondary stage, because the secondary stage is a real problem – you get all these impairments of hand function – pseudosyndactyly, finger contraction, and first web contracture, and ending up in a ‘mitten’ hand.”
Surgery is a very “crude” and “blunt tool,” Ms. Smith emphasized. Prevention is key, and perhaps in the future gene therapy, mesenchymal stem cells, and the like will mean that there is less need for hand surgery, she intimated. Until then, there are some things that can be done surgically – such as wrapping the hands, using gloves to protect the skin, stretching out the web spaces of the palm, and using splints. “All of these things we are trying to improve all the time, and come up with new ideas.”
The question is when to intervene? Ms. Smith said that in any other type of hand surgery, particularly in children where growth and function might be affected, the aim would be to “go in early.” In children with RDEB, however, the timing is not so clear: “Should we be going in early, before secondary joint changes, before we get secondary tendon shortening?” Perhaps this would result in less complex surgery, she suggested, but “it is a really huge deal for families and for children. For the moment we are still only really doing it when there [are] quite significant functional difficulties.”
When it comes to the type of surgery done to release the hands, “everyone has variants on the release technique,” but none are known to be better than any other, Ms. Smith said. Surgical release deals with consequences of dermal fibrosis but also creates more fibrosis, she cautioned.
Effects of hand surgery do not last long
How long the surgery’s effect will last is “what everyone wants to know, and I don’t think anyone has found a really good answer. It is variable, but unfortunately it’s a lot shorter than we’d like,” said Ms. Smith.
Indeed, data in another poster presentation by Ms. Smith and colleagues showed that the situation can be ‘back to square one’ within just a couple of years. Of the seven patients who had surgery at a mean 7 years of age (range 6-10 years), “most had returned to their original total score by 2 years post surgery,” the team wrote. All children “were initially happy with both appearance and function after surgery” they added; however, “happiness gradually decreased with time as they lost function and their scores increased with recurrence of contracture.”
The team noted that “sometimes after surgery a different component of the hand contracture worsened but function was preserved.”
While the ACE tool used by the team has not yet been validated, they believe it to be “a systematic tool with a structured method of administration.” As such it can help with informed decision making, they believe, and it could be used with functional measures to see how hand contractures might be impacting hand function and quality of life.
The ACE tool can be downloaded for free from the GOSH website.
SOURCE: Jessop N et al. EB 2020. Posters 42 and 43; Smith G et al. Poster 63.
London – A predictable course of hand contracture was seen in a U.K. study of children with recessive dystrophic epidermolysis bullosa (RDEB), with all children experiencing moderate or severe hand deformity by the age of 12 years.
This stark finding, reported at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA), highlighted the importance of intervening early with surgical methods that aim to prevent the pseudosyndactyly, or “mitten” hand deformity, which is an unfortunate characteristic of the genetic skin condition.
The investigative team, from the plastic and reconstructive surgery department at Great Ormond Street Hospital for Children NHS Trust, London, presented data from a retrospective case review of 24 children who attended their specialist pediatric EB center between 2010 and 2019. Of these, seven children had surgery to release hand contractures.
A total of 250 hand assessments were made via the novel Assessment of the Component Hand Contractures in Epidermolysis Bullosa (ACE). The assessment provides a hand deformity grade (HDG) – none, mild, moderate, and severe –based on the typical contractures that are seen in RDEB, such as between the fingers (web space contractures), finger flexion contractures, and thumb adduction contractures.
Using the ACE tool, “we found four significant time points regarding hand contracture development,” Catherine Miller, one of the team’s occupational therapists, said during a poster presentation. At birth, none of the children had any signs of hand deformity, but by 2 years of age half had mild hand contracture. By age 6, all children had some form of hand deformity, Ms. Miller said, and by age 12 all had moderate to severe hand deformity, “so adding to the data that hand deformities really are inevitable.”
Other findings were that the thumb and finger web spaces were the first to contract, Ms. Miller said. “So they tend to develop earlier and progress relatively slowly.” By contrast the finger flexion contractures occurred later on, “but progress more relatively rapidly,” she observed.
“Our data are limited as not every child is included at every age, and out tool has not yet been validated,” Ms. Miller and team acknowledged in the poster. “We assume that hand contractures do not improve, and therefore have included operated hands (mean age 6 years) at their last preoperative HDG in order to represent older children and more advanced hand deformities.”
In an interview, Ms. Miller noted that families have a lot going on when their newborn is diagnosed with RDEB, so introducing the idea that there will be substantial hand deformities in the future “is a difficult conversation. We have to take that gently.”
There are nonsurgical approaches to keeping the hands open, such as “encouraging them to open their hands in play, daily stretches; we can make splints with a silicon substance and other thermoplastic materials,” Ms. Miller said.
Hand surgery is a ‘blunt tool’
“The primary problem, of course, is the dermal fibrosis that we see that creates scarring and secondary problems,” said Gill Smith, a plastic surgery consultant who works with Ms. Miller at the hospital.
“In an ideal world, you would bandage up [the children] so that they could never injure their hands, but then they couldn’t use them, they couldn’t grow properly, and they could not develop,” Ms. Smith said in an oral presentation about hand surgery in children with RDEB. “You do not want them to get to the secondary stage, because the secondary stage is a real problem – you get all these impairments of hand function – pseudosyndactyly, finger contraction, and first web contracture, and ending up in a ‘mitten’ hand.”
Surgery is a very “crude” and “blunt tool,” Ms. Smith emphasized. Prevention is key, and perhaps in the future gene therapy, mesenchymal stem cells, and the like will mean that there is less need for hand surgery, she intimated. Until then, there are some things that can be done surgically – such as wrapping the hands, using gloves to protect the skin, stretching out the web spaces of the palm, and using splints. “All of these things we are trying to improve all the time, and come up with new ideas.”
The question is when to intervene? Ms. Smith said that in any other type of hand surgery, particularly in children where growth and function might be affected, the aim would be to “go in early.” In children with RDEB, however, the timing is not so clear: “Should we be going in early, before secondary joint changes, before we get secondary tendon shortening?” Perhaps this would result in less complex surgery, she suggested, but “it is a really huge deal for families and for children. For the moment we are still only really doing it when there [are] quite significant functional difficulties.”
When it comes to the type of surgery done to release the hands, “everyone has variants on the release technique,” but none are known to be better than any other, Ms. Smith said. Surgical release deals with consequences of dermal fibrosis but also creates more fibrosis, she cautioned.
Effects of hand surgery do not last long
How long the surgery’s effect will last is “what everyone wants to know, and I don’t think anyone has found a really good answer. It is variable, but unfortunately it’s a lot shorter than we’d like,” said Ms. Smith.
Indeed, data in another poster presentation by Ms. Smith and colleagues showed that the situation can be ‘back to square one’ within just a couple of years. Of the seven patients who had surgery at a mean 7 years of age (range 6-10 years), “most had returned to their original total score by 2 years post surgery,” the team wrote. All children “were initially happy with both appearance and function after surgery” they added; however, “happiness gradually decreased with time as they lost function and their scores increased with recurrence of contracture.”
The team noted that “sometimes after surgery a different component of the hand contracture worsened but function was preserved.”
While the ACE tool used by the team has not yet been validated, they believe it to be “a systematic tool with a structured method of administration.” As such it can help with informed decision making, they believe, and it could be used with functional measures to see how hand contractures might be impacting hand function and quality of life.
The ACE tool can be downloaded for free from the GOSH website.
SOURCE: Jessop N et al. EB 2020. Posters 42 and 43; Smith G et al. Poster 63.
REPORTING FROM EB 2020
Epidermolysis bullosa classification criteria refined and ready
LONDON – have come in understanding this debilitating group of genetic skin diseases, but also how far there is still to go towards improving the management of those affected.
Previous criteria issued in 2014 represented “important progress” and “built on the achievements of several generations of physicians and researchers who described the phenotypes, the level of skin cleavage, developed and characterized antibodies, and discovered EB-associated genes,” Cristina Has, MD, said at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA).
Dr. Has, a senior dermatologist and professor of experimental dermatology at the University of Freiburg (Germany), observed that prior criteria had “introduced genetic and molecular data in a so-called onion-skin classification of EB, and removed most of the eponyms,” which had been maintained in the latest update.
“What is new, and probably the most important change, is making the distinction between classical EB and other disorders with skin fragility,” she said, noting that the revised classification criteria for EB included minor changes to the nomenclature of EB. Six new EB subtypes and genes have also been added, and there are new sections on genotype/phenotype correlations, disease modifying factors, and the natural history of EB. Furthermore, supporting information included a concise description of clinical and genetic features of all EB types and subtypes.
The updated criteria are the result of an expert meeting held in April 2019 and have been accepted for publication. The expert panel that developed the criteria think that the revised classification criteria will be “useful and, we hope, inspiring and motivating for the young generation of dermatologists, pediatricians, and for the researchers who work in this field,” Dr. Has said.
“The term EB has been used in the last years for many new disorders, and this is the reason why we thought we have to somehow control this, and to make the distinction between classical epidermolysis bullosa due to defects at the dermal junction and other disorders with skin fragility where the anomalies occur within other layers of the epidermis or in the dermis,” Dr. Has explained.
There are still 4 main types of classical EB: EB simplex (EBS), dystrophic EB (DEB), junctional EB, and Kindler EB, but there are now 34 subtypes, slightly fewer than before. The updated criteria distinguish between the types and subtypes according to the level of skin cleavage, the inheritance pattern, the mutated gene, and the targeted protein, Dr. Has said.
As for peeling disorders, these have been classified as being erosive or hyperkeratotic, or as affecting the connective tissue with skin blistering. Similar to classical EB, these disorders are associated with fragility of the skin and mucosa and share some pathogenetic mechanisms. Moreover, as “the suffering of the patient is similar,” Dr. Has said, “we’d like to consider them under the umbrella of EB.” Most of the disorders she listed were inherited via an autosomal recessive mechanism, with intraepidermal disorders inherited via an autosomal dominant mechanism. New genes are being identified the time, she added, so these groupings will no doubt be subject to future revisions.
Minor changes to nomenclature were made to avoid confusion among clinicians and those living with the condition. As such, Kindler EB replaces Kindler syndrome, names of some subtypes were simplified, and a new “self-improving” type of DEB was introduced to replace the term “transient dermolysis of the newborn.” Altogether, there are now 11 subtypes of DEB. A distinction was also made between syndromic and nonsyndromic EB. “We all know that EB can be a systemic disorder with secondary manifestations within different organs,” Dr. Has told conference attendees. Anemia and failure to thrive can be associated, but it still remains a nonsyndromic disorder, she said. By contrast, “syndromic EB is due to genetic defects, which are also expressed in other organs than the skin or mucosal membranes, and lead to primary extracutaneous manifestations, such as cardiomyopathy, nephropathy, and so on.”
There are fewer subtypes of EBS and “we think they are better defined,” Dr. Has stated. “EB simplex is the most heterogenous EB type, clinically and genetically, and includes several syndromic disorders,” and the new classification criteria should be useful in helping categorize individuals with EBS and thus help target their management.
One of the six new subtypes of EB included in the revised classification criteria is “syndromic EBS with cardiomyopathy” caused by the KLH24 mutation. This gene was discovered in 2016 and more than 40 cases have so far been identified, 50% of which have been sporadic de novo mutations.
Other new EB subtypes are:
- “EBS with localized nephropathy” caused by a mutation in the CD151 gene.
- An autosomal recessive EBS linked to the KRT5 gene.
- A new phenotype that manifests with oral mucosal blisters linked to the DSG3 gene. (Although only a single case has been reported to date, it was felt worthy of inclusion.)
- Another linked to DSG3 that leads to skin fragility and hypertrichosis.
- A new dystrophic EB subtype linked to mutations in the PLOD3 gene.
In an interview, Dr. Has reiterated the importance of keeping classification criteria updated in line with current research findings. She emphasized that there were many types of EB and how important it was to refine how these were classified based on the underlying genetics.
“We brought much more genetic data into the paper, because we are in the era of personalized medicine,” she said. “There are specific therapies for mutations and for different subtypes and that’s why we think that, step by step, we have to bring in more and more data into the classification.”
There are many people with EBS, she observed, and while these individuals may not have such a dramatic clinical presentation as those with recessive DEB, for example, the effect of the condition on their daily lives is no less. “These people are active, they have jobs, they have to work, and they have pain, they have blister,” Dr. Has said.
While the criteria are intended only for classification of EB, they might help in practice. Dr. Has gave an anecdotal example of a woman that has been misdiagnosed as having a type of DEB with a high risk of squamous cell carcinoma but in fact had a different form of EB with no risk of developing SCC. “That’s why criteria are important,” she said.
Dr. Has had no conflicts of interest to disclose.
LONDON – have come in understanding this debilitating group of genetic skin diseases, but also how far there is still to go towards improving the management of those affected.
Previous criteria issued in 2014 represented “important progress” and “built on the achievements of several generations of physicians and researchers who described the phenotypes, the level of skin cleavage, developed and characterized antibodies, and discovered EB-associated genes,” Cristina Has, MD, said at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA).
Dr. Has, a senior dermatologist and professor of experimental dermatology at the University of Freiburg (Germany), observed that prior criteria had “introduced genetic and molecular data in a so-called onion-skin classification of EB, and removed most of the eponyms,” which had been maintained in the latest update.
“What is new, and probably the most important change, is making the distinction between classical EB and other disorders with skin fragility,” she said, noting that the revised classification criteria for EB included minor changes to the nomenclature of EB. Six new EB subtypes and genes have also been added, and there are new sections on genotype/phenotype correlations, disease modifying factors, and the natural history of EB. Furthermore, supporting information included a concise description of clinical and genetic features of all EB types and subtypes.
The updated criteria are the result of an expert meeting held in April 2019 and have been accepted for publication. The expert panel that developed the criteria think that the revised classification criteria will be “useful and, we hope, inspiring and motivating for the young generation of dermatologists, pediatricians, and for the researchers who work in this field,” Dr. Has said.
“The term EB has been used in the last years for many new disorders, and this is the reason why we thought we have to somehow control this, and to make the distinction between classical epidermolysis bullosa due to defects at the dermal junction and other disorders with skin fragility where the anomalies occur within other layers of the epidermis or in the dermis,” Dr. Has explained.
There are still 4 main types of classical EB: EB simplex (EBS), dystrophic EB (DEB), junctional EB, and Kindler EB, but there are now 34 subtypes, slightly fewer than before. The updated criteria distinguish between the types and subtypes according to the level of skin cleavage, the inheritance pattern, the mutated gene, and the targeted protein, Dr. Has said.
As for peeling disorders, these have been classified as being erosive or hyperkeratotic, or as affecting the connective tissue with skin blistering. Similar to classical EB, these disorders are associated with fragility of the skin and mucosa and share some pathogenetic mechanisms. Moreover, as “the suffering of the patient is similar,” Dr. Has said, “we’d like to consider them under the umbrella of EB.” Most of the disorders she listed were inherited via an autosomal recessive mechanism, with intraepidermal disorders inherited via an autosomal dominant mechanism. New genes are being identified the time, she added, so these groupings will no doubt be subject to future revisions.
Minor changes to nomenclature were made to avoid confusion among clinicians and those living with the condition. As such, Kindler EB replaces Kindler syndrome, names of some subtypes were simplified, and a new “self-improving” type of DEB was introduced to replace the term “transient dermolysis of the newborn.” Altogether, there are now 11 subtypes of DEB. A distinction was also made between syndromic and nonsyndromic EB. “We all know that EB can be a systemic disorder with secondary manifestations within different organs,” Dr. Has told conference attendees. Anemia and failure to thrive can be associated, but it still remains a nonsyndromic disorder, she said. By contrast, “syndromic EB is due to genetic defects, which are also expressed in other organs than the skin or mucosal membranes, and lead to primary extracutaneous manifestations, such as cardiomyopathy, nephropathy, and so on.”
There are fewer subtypes of EBS and “we think they are better defined,” Dr. Has stated. “EB simplex is the most heterogenous EB type, clinically and genetically, and includes several syndromic disorders,” and the new classification criteria should be useful in helping categorize individuals with EBS and thus help target their management.
One of the six new subtypes of EB included in the revised classification criteria is “syndromic EBS with cardiomyopathy” caused by the KLH24 mutation. This gene was discovered in 2016 and more than 40 cases have so far been identified, 50% of which have been sporadic de novo mutations.
Other new EB subtypes are:
- “EBS with localized nephropathy” caused by a mutation in the CD151 gene.
- An autosomal recessive EBS linked to the KRT5 gene.
- A new phenotype that manifests with oral mucosal blisters linked to the DSG3 gene. (Although only a single case has been reported to date, it was felt worthy of inclusion.)
- Another linked to DSG3 that leads to skin fragility and hypertrichosis.
- A new dystrophic EB subtype linked to mutations in the PLOD3 gene.
In an interview, Dr. Has reiterated the importance of keeping classification criteria updated in line with current research findings. She emphasized that there were many types of EB and how important it was to refine how these were classified based on the underlying genetics.
“We brought much more genetic data into the paper, because we are in the era of personalized medicine,” she said. “There are specific therapies for mutations and for different subtypes and that’s why we think that, step by step, we have to bring in more and more data into the classification.”
There are many people with EBS, she observed, and while these individuals may not have such a dramatic clinical presentation as those with recessive DEB, for example, the effect of the condition on their daily lives is no less. “These people are active, they have jobs, they have to work, and they have pain, they have blister,” Dr. Has said.
While the criteria are intended only for classification of EB, they might help in practice. Dr. Has gave an anecdotal example of a woman that has been misdiagnosed as having a type of DEB with a high risk of squamous cell carcinoma but in fact had a different form of EB with no risk of developing SCC. “That’s why criteria are important,” she said.
Dr. Has had no conflicts of interest to disclose.
LONDON – have come in understanding this debilitating group of genetic skin diseases, but also how far there is still to go towards improving the management of those affected.
Previous criteria issued in 2014 represented “important progress” and “built on the achievements of several generations of physicians and researchers who described the phenotypes, the level of skin cleavage, developed and characterized antibodies, and discovered EB-associated genes,” Cristina Has, MD, said at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA).
Dr. Has, a senior dermatologist and professor of experimental dermatology at the University of Freiburg (Germany), observed that prior criteria had “introduced genetic and molecular data in a so-called onion-skin classification of EB, and removed most of the eponyms,” which had been maintained in the latest update.
“What is new, and probably the most important change, is making the distinction between classical EB and other disorders with skin fragility,” she said, noting that the revised classification criteria for EB included minor changes to the nomenclature of EB. Six new EB subtypes and genes have also been added, and there are new sections on genotype/phenotype correlations, disease modifying factors, and the natural history of EB. Furthermore, supporting information included a concise description of clinical and genetic features of all EB types and subtypes.
The updated criteria are the result of an expert meeting held in April 2019 and have been accepted for publication. The expert panel that developed the criteria think that the revised classification criteria will be “useful and, we hope, inspiring and motivating for the young generation of dermatologists, pediatricians, and for the researchers who work in this field,” Dr. Has said.
“The term EB has been used in the last years for many new disorders, and this is the reason why we thought we have to somehow control this, and to make the distinction between classical epidermolysis bullosa due to defects at the dermal junction and other disorders with skin fragility where the anomalies occur within other layers of the epidermis or in the dermis,” Dr. Has explained.
There are still 4 main types of classical EB: EB simplex (EBS), dystrophic EB (DEB), junctional EB, and Kindler EB, but there are now 34 subtypes, slightly fewer than before. The updated criteria distinguish between the types and subtypes according to the level of skin cleavage, the inheritance pattern, the mutated gene, and the targeted protein, Dr. Has said.
As for peeling disorders, these have been classified as being erosive or hyperkeratotic, or as affecting the connective tissue with skin blistering. Similar to classical EB, these disorders are associated with fragility of the skin and mucosa and share some pathogenetic mechanisms. Moreover, as “the suffering of the patient is similar,” Dr. Has said, “we’d like to consider them under the umbrella of EB.” Most of the disorders she listed were inherited via an autosomal recessive mechanism, with intraepidermal disorders inherited via an autosomal dominant mechanism. New genes are being identified the time, she added, so these groupings will no doubt be subject to future revisions.
Minor changes to nomenclature were made to avoid confusion among clinicians and those living with the condition. As such, Kindler EB replaces Kindler syndrome, names of some subtypes were simplified, and a new “self-improving” type of DEB was introduced to replace the term “transient dermolysis of the newborn.” Altogether, there are now 11 subtypes of DEB. A distinction was also made between syndromic and nonsyndromic EB. “We all know that EB can be a systemic disorder with secondary manifestations within different organs,” Dr. Has told conference attendees. Anemia and failure to thrive can be associated, but it still remains a nonsyndromic disorder, she said. By contrast, “syndromic EB is due to genetic defects, which are also expressed in other organs than the skin or mucosal membranes, and lead to primary extracutaneous manifestations, such as cardiomyopathy, nephropathy, and so on.”
There are fewer subtypes of EBS and “we think they are better defined,” Dr. Has stated. “EB simplex is the most heterogenous EB type, clinically and genetically, and includes several syndromic disorders,” and the new classification criteria should be useful in helping categorize individuals with EBS and thus help target their management.
One of the six new subtypes of EB included in the revised classification criteria is “syndromic EBS with cardiomyopathy” caused by the KLH24 mutation. This gene was discovered in 2016 and more than 40 cases have so far been identified, 50% of which have been sporadic de novo mutations.
Other new EB subtypes are:
- “EBS with localized nephropathy” caused by a mutation in the CD151 gene.
- An autosomal recessive EBS linked to the KRT5 gene.
- A new phenotype that manifests with oral mucosal blisters linked to the DSG3 gene. (Although only a single case has been reported to date, it was felt worthy of inclusion.)
- Another linked to DSG3 that leads to skin fragility and hypertrichosis.
- A new dystrophic EB subtype linked to mutations in the PLOD3 gene.
In an interview, Dr. Has reiterated the importance of keeping classification criteria updated in line with current research findings. She emphasized that there were many types of EB and how important it was to refine how these were classified based on the underlying genetics.
“We brought much more genetic data into the paper, because we are in the era of personalized medicine,” she said. “There are specific therapies for mutations and for different subtypes and that’s why we think that, step by step, we have to bring in more and more data into the classification.”
There are many people with EBS, she observed, and while these individuals may not have such a dramatic clinical presentation as those with recessive DEB, for example, the effect of the condition on their daily lives is no less. “These people are active, they have jobs, they have to work, and they have pain, they have blister,” Dr. Has said.
While the criteria are intended only for classification of EB, they might help in practice. Dr. Has gave an anecdotal example of a woman that has been misdiagnosed as having a type of DEB with a high risk of squamous cell carcinoma but in fact had a different form of EB with no risk of developing SCC. “That’s why criteria are important,” she said.
Dr. Has had no conflicts of interest to disclose.
REPORTING FROM EB 2020
Psoriasis ointment helped with itch, healing in phase 2 EB study
LONDON – , in a small, placebo-controlled, phase 2 study.
More importantly, use of the ointment promoted wound healing in those with the severe skin-blistering condition. Indeed, compared with placebo, a greater reduction in wound size was observed after 2 weeks when the ointment was applied (a mean reduction of 65.5% vs. 88.4%; P less than .006). However, at 1 month, no significant differences were seen in the size of the wounds between the two treatment arms.
“Calcipotriol is a vitamin D analog and it is well known that vitamin D is a very critical factor for skin homeostasis and proper wound healing,” Christina Guttmann-Gruber, PhD, said at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA). Dr. Guttmann-Gruber, a group lead researcher for EB House Austria, which is based at the Salzburg (Austria) University Clinic for Dermatology, noted that vitamin D also helps with tissue repair and immune modulation, and enhances local antimicrobial activity.
During an oral poster presentation at the meeting, Dr. Guttmann-Gruber explained that in previous in vitro studies, it was found that low concentrations (100 nmol) of calcipotriol inhibited proliferation of RDEB tumor cells (Sci Rep. 2018 Sep 7;8:13430). Calcipotriol (also known as calcipotriene) also was found to improve the expression of antimicrobial peptides and promote wound closure. “Therefore, we thought that applying calcipotriol at the site of injury, on chronic wounds prone to superinfection where it is needed, might be beneficial for our patients.”
She and her associates designed a two-arm, randomized, double-blind crossover study to assess the effects of an existing calcipotriol-containing ointment on wound healing in patients with RDEB. The ointment used in the study is approved for treating psoriasis but was adapted by the in-house pharmacy team to reduce the concentration of calcipotriol to about 0.05 mcg/g, or around 121 nmol. The reason for the reduction was that, at higher doses, keratinocyte proliferation was reduced, which would be detrimental in RDEB patients.
Nine patients were included in the study and were randomized to either apply 1 g of the active or placebo ointment to each of two designated wounds, of at least 6 cm2 in size, every day for 4 weeks. A 2-month washout period then followed before the groups switched to use the other ointment for 1 month. Six out of the nine patients completed both treatment phases. The reasons for the patients not completing both intervention phases were not related to the drug.
Calcipotriol treatment resulted in a significant and steady reduction in itch over the entire course of treatment, which was not seen among those on placebo, Dr. Guttmann-Gruber observed. The reduction in itch was “striking,” but only while the treatment was being used, she said. Results for pain were less clear, with a significant reduction in pain after 2 weeks seen only in the placebo group, while both treatments reduced pain to the same degree by 1 month.
No serious adverse events were observed at any time point and topical use of the low-dose calcipotriol did not significantly change serum levels of calcium or vitamin D in the two patients in which this was studied, Dr. Guttmann-Gruber said.
“This is an approved drug; it’s used in psoriasis, but at a very high concentration. We were able to use it off label and make a diluted version,” she observed. “Any pharmacy can do it.” Although it was applied topically, it could be done by applying it to the dressing rather directly onto the wounded skin, she said.
Data on the skin microbiome response to treatment were also collected but were not available to analyze in time for presentation, but it appeared that there was improvement with the low-dose calcipotriol treatment, Dr. Guttmann-Gruber said. “When the wounds are healing, the microbial flora is improving.”
The next step will probably be to plan a multicenter trial of this treatment, Dr. Guttmann-Gruber said in an interview. The questions is whether such a trial would get the financial backing it needed, but if an orphan drug designation could be obtained for calcipotriol for EB, then it would be possible to conduct such a trial.
The study was funded by DEBRA Austria. The presenting author, Dr. Guttmann-Gruber, had no conflicts of interest to disclose.
SOURCE: Guttmann-Gruber C et al. EB World Congress 2020. Poster 34.
LONDON – , in a small, placebo-controlled, phase 2 study.
More importantly, use of the ointment promoted wound healing in those with the severe skin-blistering condition. Indeed, compared with placebo, a greater reduction in wound size was observed after 2 weeks when the ointment was applied (a mean reduction of 65.5% vs. 88.4%; P less than .006). However, at 1 month, no significant differences were seen in the size of the wounds between the two treatment arms.
“Calcipotriol is a vitamin D analog and it is well known that vitamin D is a very critical factor for skin homeostasis and proper wound healing,” Christina Guttmann-Gruber, PhD, said at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA). Dr. Guttmann-Gruber, a group lead researcher for EB House Austria, which is based at the Salzburg (Austria) University Clinic for Dermatology, noted that vitamin D also helps with tissue repair and immune modulation, and enhances local antimicrobial activity.
During an oral poster presentation at the meeting, Dr. Guttmann-Gruber explained that in previous in vitro studies, it was found that low concentrations (100 nmol) of calcipotriol inhibited proliferation of RDEB tumor cells (Sci Rep. 2018 Sep 7;8:13430). Calcipotriol (also known as calcipotriene) also was found to improve the expression of antimicrobial peptides and promote wound closure. “Therefore, we thought that applying calcipotriol at the site of injury, on chronic wounds prone to superinfection where it is needed, might be beneficial for our patients.”
She and her associates designed a two-arm, randomized, double-blind crossover study to assess the effects of an existing calcipotriol-containing ointment on wound healing in patients with RDEB. The ointment used in the study is approved for treating psoriasis but was adapted by the in-house pharmacy team to reduce the concentration of calcipotriol to about 0.05 mcg/g, or around 121 nmol. The reason for the reduction was that, at higher doses, keratinocyte proliferation was reduced, which would be detrimental in RDEB patients.
Nine patients were included in the study and were randomized to either apply 1 g of the active or placebo ointment to each of two designated wounds, of at least 6 cm2 in size, every day for 4 weeks. A 2-month washout period then followed before the groups switched to use the other ointment for 1 month. Six out of the nine patients completed both treatment phases. The reasons for the patients not completing both intervention phases were not related to the drug.
Calcipotriol treatment resulted in a significant and steady reduction in itch over the entire course of treatment, which was not seen among those on placebo, Dr. Guttmann-Gruber observed. The reduction in itch was “striking,” but only while the treatment was being used, she said. Results for pain were less clear, with a significant reduction in pain after 2 weeks seen only in the placebo group, while both treatments reduced pain to the same degree by 1 month.
No serious adverse events were observed at any time point and topical use of the low-dose calcipotriol did not significantly change serum levels of calcium or vitamin D in the two patients in which this was studied, Dr. Guttmann-Gruber said.
“This is an approved drug; it’s used in psoriasis, but at a very high concentration. We were able to use it off label and make a diluted version,” she observed. “Any pharmacy can do it.” Although it was applied topically, it could be done by applying it to the dressing rather directly onto the wounded skin, she said.
Data on the skin microbiome response to treatment were also collected but were not available to analyze in time for presentation, but it appeared that there was improvement with the low-dose calcipotriol treatment, Dr. Guttmann-Gruber said. “When the wounds are healing, the microbial flora is improving.”
The next step will probably be to plan a multicenter trial of this treatment, Dr. Guttmann-Gruber said in an interview. The questions is whether such a trial would get the financial backing it needed, but if an orphan drug designation could be obtained for calcipotriol for EB, then it would be possible to conduct such a trial.
The study was funded by DEBRA Austria. The presenting author, Dr. Guttmann-Gruber, had no conflicts of interest to disclose.
SOURCE: Guttmann-Gruber C et al. EB World Congress 2020. Poster 34.
LONDON – , in a small, placebo-controlled, phase 2 study.
More importantly, use of the ointment promoted wound healing in those with the severe skin-blistering condition. Indeed, compared with placebo, a greater reduction in wound size was observed after 2 weeks when the ointment was applied (a mean reduction of 65.5% vs. 88.4%; P less than .006). However, at 1 month, no significant differences were seen in the size of the wounds between the two treatment arms.
“Calcipotriol is a vitamin D analog and it is well known that vitamin D is a very critical factor for skin homeostasis and proper wound healing,” Christina Guttmann-Gruber, PhD, said at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA). Dr. Guttmann-Gruber, a group lead researcher for EB House Austria, which is based at the Salzburg (Austria) University Clinic for Dermatology, noted that vitamin D also helps with tissue repair and immune modulation, and enhances local antimicrobial activity.
During an oral poster presentation at the meeting, Dr. Guttmann-Gruber explained that in previous in vitro studies, it was found that low concentrations (100 nmol) of calcipotriol inhibited proliferation of RDEB tumor cells (Sci Rep. 2018 Sep 7;8:13430). Calcipotriol (also known as calcipotriene) also was found to improve the expression of antimicrobial peptides and promote wound closure. “Therefore, we thought that applying calcipotriol at the site of injury, on chronic wounds prone to superinfection where it is needed, might be beneficial for our patients.”
She and her associates designed a two-arm, randomized, double-blind crossover study to assess the effects of an existing calcipotriol-containing ointment on wound healing in patients with RDEB. The ointment used in the study is approved for treating psoriasis but was adapted by the in-house pharmacy team to reduce the concentration of calcipotriol to about 0.05 mcg/g, or around 121 nmol. The reason for the reduction was that, at higher doses, keratinocyte proliferation was reduced, which would be detrimental in RDEB patients.
Nine patients were included in the study and were randomized to either apply 1 g of the active or placebo ointment to each of two designated wounds, of at least 6 cm2 in size, every day for 4 weeks. A 2-month washout period then followed before the groups switched to use the other ointment for 1 month. Six out of the nine patients completed both treatment phases. The reasons for the patients not completing both intervention phases were not related to the drug.
Calcipotriol treatment resulted in a significant and steady reduction in itch over the entire course of treatment, which was not seen among those on placebo, Dr. Guttmann-Gruber observed. The reduction in itch was “striking,” but only while the treatment was being used, she said. Results for pain were less clear, with a significant reduction in pain after 2 weeks seen only in the placebo group, while both treatments reduced pain to the same degree by 1 month.
No serious adverse events were observed at any time point and topical use of the low-dose calcipotriol did not significantly change serum levels of calcium or vitamin D in the two patients in which this was studied, Dr. Guttmann-Gruber said.
“This is an approved drug; it’s used in psoriasis, but at a very high concentration. We were able to use it off label and make a diluted version,” she observed. “Any pharmacy can do it.” Although it was applied topically, it could be done by applying it to the dressing rather directly onto the wounded skin, she said.
Data on the skin microbiome response to treatment were also collected but were not available to analyze in time for presentation, but it appeared that there was improvement with the low-dose calcipotriol treatment, Dr. Guttmann-Gruber said. “When the wounds are healing, the microbial flora is improving.”
The next step will probably be to plan a multicenter trial of this treatment, Dr. Guttmann-Gruber said in an interview. The questions is whether such a trial would get the financial backing it needed, but if an orphan drug designation could be obtained for calcipotriol for EB, then it would be possible to conduct such a trial.
The study was funded by DEBRA Austria. The presenting author, Dr. Guttmann-Gruber, had no conflicts of interest to disclose.
SOURCE: Guttmann-Gruber C et al. EB World Congress 2020. Poster 34.
REPORTING FROM EB 2020
Losartan showing promise in pediatric epidermolysis bullosa trial
LONDON – Treatment with the in an early clinical study.
In the ongoing phase 1/2 REFLECT (Recessive dystrophic EB: Mechanisms of fibrosis and its prevention with Losartan in vivo) trial, involving 29 children, no severe complications have been noted so far, according to one of the study investigators, Dimitra Kiritsi, MD, of the University of Freiburg, Germany. At the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA), she presented interim data on 18 patients in the trial, emphasizing that the primary aim of the trial was to evaluate the safety of this treatment approach.
Over the 2 years the trial has been underway, 65 adverse events have been reported, of which 4 have been severe. Two of these were bacterial infections that required hospital treatment and the other two were a reduction in the general health condition of the child.
Losartan is an angiotensin-II receptor blocker (ARB) that has been in clinical use for more than 25 years in adults and 15 years in children over the age of 6 years.
The drug may be used for treating recessive dystrophic EB (RDEB) in the future, Dr. Kiritsi said, because it attenuates tumor necrosis factor–beta (TGF-beta) signaling, which is thought to be involved in the fibrotic process. So while it may not target the genetic defect, it could help ameliorate the effects of the disease.
The precursor to REFLECT was a study performed in a mouse disease model of EB (EMBO Mol Med. 2015;7:1211-28) where a reduction in fibrotic scarring was seen with losartan with “remarkable effects” on “mitten” deformity, Dr. Kiritsi said. The results of that study suggested that the earlier treatment with losartan was started in the course of the disease, the better the effect, she added. (Mitten deformity is the result of fused skin between the fingers or toes, and the subsequent buildup of fibrotic tissue causes the hand or foot to contract.)
REFLECT is an investigator-initiated trial that started in 2017 and is being funded by DEBRA International. It is a dual-center, nonrandomized, single-arm study in which children aged 3-16 years with RDEB are treated with losartan for 10 months, with follow-up at 3 months.
Various secondary endpoints were included to look for the first signs of any efficacy: the Physician’s Global Assessment (PGA), the Birmingham Epidermolysis Bullosa Severity Score (BEBS), the Epidermolysis Bullosa Disease Activity and Scarring Index (EBDASI), the Itch Assessment Scale for the Pediatric Burn Patients, and two quality of life indices: the Quality of Life in EB (QOLEB) questionnaire and the Children’s Dermatology Life Quality Index (CDLQI).
Dr. Kiritsi highlighted a few of the secondary endpoint findings, saying that reduced BEBS scores showed there was “amelioration of the patients’ phenotype” and that EBDASI scores also decreased, with “nearly 60% of the patients having significant improvement of their skin disease.” Importantly, itch improved in most of the patients, she said. Reductions in CDLQI were observed, “meaning that quality of life was significantly better at the end of the trial.” There were also decreases in inflammatory markers, such as C-reactive protein, interleukin-6, and TNF-alpha.
Although there is no validated tool available to assess hand function, Dr. Kiritsi and her team used their own morphometric scoring instrument to measure how far the hand could stretch; their evaluations suggested that this measure improved – or at least did not worsen – with losartan treatment, she noted.
A larger, randomized trial is needed to confirm if there is any benefit of losartan, but first, a new, easy-to-swallow losartan formulation needs to be developed specifically for EB in the pediatric population, Dr. Kiritsi said. Although a pediatric suspension of losartan was previously available, it is no longer on the market, so the next step is to develop a formulation that could be used in a pivotal clinical trial, she noted.
“Losartan faces fewer technical hurdles compared to other novel treatments as it is an established medicine,” Dr. Kiritsi and associates observed in a poster presentation. There are still economic hurdles, however, since “with losartan patents expired, companies cannot expect to recoup an investment into clinical studies” and alternative funding sources are needed.
In 2019, losartan was granted an orphan drug designation for the treatment of EB from both the Food and Drug Administration and the European Medicines Agency, but its use remains off label in children. “We decided to treat children,” Dr. Kiritsi said, “because we wanted to start as early as possible. If you already have mitten deformities, these cannot be reversed.”
DEBRA International funded the study. Dr. Kiritsi received research support from Rheacell GmbH and honoraria or consultation fees from Amryt Pharma and Rheacell GmbH. She has received other support from DEBRA International, EB Research Partnership, Fritz Thyssen Stiftung, German Research Foundation (funding of research projects), and 3R Pharma Consulting and Midas Pharma GmbH (consultation for losartan new drug formulation).
SOURCE: Kiritsi D et al. EB 2020. Poster 47.
LONDON – Treatment with the in an early clinical study.
In the ongoing phase 1/2 REFLECT (Recessive dystrophic EB: Mechanisms of fibrosis and its prevention with Losartan in vivo) trial, involving 29 children, no severe complications have been noted so far, according to one of the study investigators, Dimitra Kiritsi, MD, of the University of Freiburg, Germany. At the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA), she presented interim data on 18 patients in the trial, emphasizing that the primary aim of the trial was to evaluate the safety of this treatment approach.
Over the 2 years the trial has been underway, 65 adverse events have been reported, of which 4 have been severe. Two of these were bacterial infections that required hospital treatment and the other two were a reduction in the general health condition of the child.
Losartan is an angiotensin-II receptor blocker (ARB) that has been in clinical use for more than 25 years in adults and 15 years in children over the age of 6 years.
The drug may be used for treating recessive dystrophic EB (RDEB) in the future, Dr. Kiritsi said, because it attenuates tumor necrosis factor–beta (TGF-beta) signaling, which is thought to be involved in the fibrotic process. So while it may not target the genetic defect, it could help ameliorate the effects of the disease.
The precursor to REFLECT was a study performed in a mouse disease model of EB (EMBO Mol Med. 2015;7:1211-28) where a reduction in fibrotic scarring was seen with losartan with “remarkable effects” on “mitten” deformity, Dr. Kiritsi said. The results of that study suggested that the earlier treatment with losartan was started in the course of the disease, the better the effect, she added. (Mitten deformity is the result of fused skin between the fingers or toes, and the subsequent buildup of fibrotic tissue causes the hand or foot to contract.)
REFLECT is an investigator-initiated trial that started in 2017 and is being funded by DEBRA International. It is a dual-center, nonrandomized, single-arm study in which children aged 3-16 years with RDEB are treated with losartan for 10 months, with follow-up at 3 months.
Various secondary endpoints were included to look for the first signs of any efficacy: the Physician’s Global Assessment (PGA), the Birmingham Epidermolysis Bullosa Severity Score (BEBS), the Epidermolysis Bullosa Disease Activity and Scarring Index (EBDASI), the Itch Assessment Scale for the Pediatric Burn Patients, and two quality of life indices: the Quality of Life in EB (QOLEB) questionnaire and the Children’s Dermatology Life Quality Index (CDLQI).
Dr. Kiritsi highlighted a few of the secondary endpoint findings, saying that reduced BEBS scores showed there was “amelioration of the patients’ phenotype” and that EBDASI scores also decreased, with “nearly 60% of the patients having significant improvement of their skin disease.” Importantly, itch improved in most of the patients, she said. Reductions in CDLQI were observed, “meaning that quality of life was significantly better at the end of the trial.” There were also decreases in inflammatory markers, such as C-reactive protein, interleukin-6, and TNF-alpha.
Although there is no validated tool available to assess hand function, Dr. Kiritsi and her team used their own morphometric scoring instrument to measure how far the hand could stretch; their evaluations suggested that this measure improved – or at least did not worsen – with losartan treatment, she noted.
A larger, randomized trial is needed to confirm if there is any benefit of losartan, but first, a new, easy-to-swallow losartan formulation needs to be developed specifically for EB in the pediatric population, Dr. Kiritsi said. Although a pediatric suspension of losartan was previously available, it is no longer on the market, so the next step is to develop a formulation that could be used in a pivotal clinical trial, she noted.
“Losartan faces fewer technical hurdles compared to other novel treatments as it is an established medicine,” Dr. Kiritsi and associates observed in a poster presentation. There are still economic hurdles, however, since “with losartan patents expired, companies cannot expect to recoup an investment into clinical studies” and alternative funding sources are needed.
In 2019, losartan was granted an orphan drug designation for the treatment of EB from both the Food and Drug Administration and the European Medicines Agency, but its use remains off label in children. “We decided to treat children,” Dr. Kiritsi said, “because we wanted to start as early as possible. If you already have mitten deformities, these cannot be reversed.”
DEBRA International funded the study. Dr. Kiritsi received research support from Rheacell GmbH and honoraria or consultation fees from Amryt Pharma and Rheacell GmbH. She has received other support from DEBRA International, EB Research Partnership, Fritz Thyssen Stiftung, German Research Foundation (funding of research projects), and 3R Pharma Consulting and Midas Pharma GmbH (consultation for losartan new drug formulation).
SOURCE: Kiritsi D et al. EB 2020. Poster 47.
LONDON – Treatment with the in an early clinical study.
In the ongoing phase 1/2 REFLECT (Recessive dystrophic EB: Mechanisms of fibrosis and its prevention with Losartan in vivo) trial, involving 29 children, no severe complications have been noted so far, according to one of the study investigators, Dimitra Kiritsi, MD, of the University of Freiburg, Germany. At the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA), she presented interim data on 18 patients in the trial, emphasizing that the primary aim of the trial was to evaluate the safety of this treatment approach.
Over the 2 years the trial has been underway, 65 adverse events have been reported, of which 4 have been severe. Two of these were bacterial infections that required hospital treatment and the other two were a reduction in the general health condition of the child.
Losartan is an angiotensin-II receptor blocker (ARB) that has been in clinical use for more than 25 years in adults and 15 years in children over the age of 6 years.
The drug may be used for treating recessive dystrophic EB (RDEB) in the future, Dr. Kiritsi said, because it attenuates tumor necrosis factor–beta (TGF-beta) signaling, which is thought to be involved in the fibrotic process. So while it may not target the genetic defect, it could help ameliorate the effects of the disease.
The precursor to REFLECT was a study performed in a mouse disease model of EB (EMBO Mol Med. 2015;7:1211-28) where a reduction in fibrotic scarring was seen with losartan with “remarkable effects” on “mitten” deformity, Dr. Kiritsi said. The results of that study suggested that the earlier treatment with losartan was started in the course of the disease, the better the effect, she added. (Mitten deformity is the result of fused skin between the fingers or toes, and the subsequent buildup of fibrotic tissue causes the hand or foot to contract.)
REFLECT is an investigator-initiated trial that started in 2017 and is being funded by DEBRA International. It is a dual-center, nonrandomized, single-arm study in which children aged 3-16 years with RDEB are treated with losartan for 10 months, with follow-up at 3 months.
Various secondary endpoints were included to look for the first signs of any efficacy: the Physician’s Global Assessment (PGA), the Birmingham Epidermolysis Bullosa Severity Score (BEBS), the Epidermolysis Bullosa Disease Activity and Scarring Index (EBDASI), the Itch Assessment Scale for the Pediatric Burn Patients, and two quality of life indices: the Quality of Life in EB (QOLEB) questionnaire and the Children’s Dermatology Life Quality Index (CDLQI).
Dr. Kiritsi highlighted a few of the secondary endpoint findings, saying that reduced BEBS scores showed there was “amelioration of the patients’ phenotype” and that EBDASI scores also decreased, with “nearly 60% of the patients having significant improvement of their skin disease.” Importantly, itch improved in most of the patients, she said. Reductions in CDLQI were observed, “meaning that quality of life was significantly better at the end of the trial.” There were also decreases in inflammatory markers, such as C-reactive protein, interleukin-6, and TNF-alpha.
Although there is no validated tool available to assess hand function, Dr. Kiritsi and her team used their own morphometric scoring instrument to measure how far the hand could stretch; their evaluations suggested that this measure improved – or at least did not worsen – with losartan treatment, she noted.
A larger, randomized trial is needed to confirm if there is any benefit of losartan, but first, a new, easy-to-swallow losartan formulation needs to be developed specifically for EB in the pediatric population, Dr. Kiritsi said. Although a pediatric suspension of losartan was previously available, it is no longer on the market, so the next step is to develop a formulation that could be used in a pivotal clinical trial, she noted.
“Losartan faces fewer technical hurdles compared to other novel treatments as it is an established medicine,” Dr. Kiritsi and associates observed in a poster presentation. There are still economic hurdles, however, since “with losartan patents expired, companies cannot expect to recoup an investment into clinical studies” and alternative funding sources are needed.
In 2019, losartan was granted an orphan drug designation for the treatment of EB from both the Food and Drug Administration and the European Medicines Agency, but its use remains off label in children. “We decided to treat children,” Dr. Kiritsi said, “because we wanted to start as early as possible. If you already have mitten deformities, these cannot be reversed.”
DEBRA International funded the study. Dr. Kiritsi received research support from Rheacell GmbH and honoraria or consultation fees from Amryt Pharma and Rheacell GmbH. She has received other support from DEBRA International, EB Research Partnership, Fritz Thyssen Stiftung, German Research Foundation (funding of research projects), and 3R Pharma Consulting and Midas Pharma GmbH (consultation for losartan new drug formulation).
SOURCE: Kiritsi D et al. EB 2020. Poster 47.
REPORTING FROM EB 2020
High cost of wound dressings for epidermolysis bullosa highlighted
LONDON – More than £2.8 million (RDEB), according to a report at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA).
Results from the Prospective Epidermolysis Bullosa Longitudinal Evaluation Study (PEBLES), which is looking at the natural history of RDEB, showed that wound dressing and bandage costs were highest for study participants with the generalized severe (RDEB-GS) subtype, at just over £85,156 (about $112,450) per patient annually. Respective yearly costs for the generalized intermediate (RDEB-GI) and inversa (RDEB-INV) subtypes were £10,112 (about $13,350) and £1,699 (about $2,240) per patient.
Looking at the costs associated with EB is important, said one of the lead investigators for PEBLES, Jemima Mellerio, MD, FRCP, consultant dermatologist at St John’s Institute of Dermatology, at Guy’s & St. Thomas’ NHS Foundation Trust, London.
“If we are going to justify the kind of expenditure [associated with new treatments], we need to know that what we are treating is already a significant burden on our health care systems,” Dr. Mellerio said.
PEBLES is an ongoing London-based registry study that is enrolling patients with all subtypes of RDEB. Data are collected via a tablet device and include demographic data, information on clinical features, results of skin biopsies and genetic tests, and laboratory findings, as well as objective disease severity and subjective patient-orientated outcome scores.
So far, 60 patients – 49 adults and 11 children – have been enrolled in PEBLES since November 2014: 26 with RDEB-GS, 23 with RDEB-GI, 9 with RDEB-INV, and 2 with the pruriginosa RDEB subtype (RDEB-PR).
Most of the participants (71%) changed all their wound dressings at one time, patching up when required. Fourteen of 49 participants had paid people to help them change their dressings and when the total cost of combined wound dressings and paid care was taken into consideration, the mean annual cost per patient was around £2,500 (about $3,300) for RDEB-INV, £10,375 (about $13,700) per patient for RDEB-GS, and a staggering £98,000 (about $129,000) per patient for RDEB-GS. The total annual cost of dressings and associated care was an estimated £3,184,229 (about $4.2 million).
In addition to data on the cost of wound dressings, data on itch and pain and quality of life were presented at the EB World Congress and discussed by Dr. Mellerio.
A total of 42 participants older than 8 years of age had itch measured via the Leuven Itch Scale, she reported, noting that itch was a consistent symptom across all subtypes of RDEB. Itch is important as it not only causes problems with skin lesions and healing, but also significantly affects sleep and has a negative impact on patients’ mood, she emphasized.
Despite experiencing itch, more than half (58%) of participants were not using any kind of treatment for itch. This “likely reflects the lack of effectiveness of current medication for this debilitating symptom,” Dr. Mellerio and associates noted in one of their poster presentations of PEBLES data.
When treatment was used for itch, it consisted mainly of antihistamines (19% of patients), emollients (19%), or a combination of both (4%). However, treatment was generally “not very good,” with a satisfaction score of just 5 on a scale of 10, Dr. Mellerio pointed out. Participants “reported frustration with the lack of effective treatment for itch,” she said.
Itch was associated with disturbed sleep 1-3 nights per week in 20%-40% of participants, and every night in 20%-30%.
Pain was found to be a significant problem, with a median level of background pain scored as 4 on a 10-cm visual analog scale and a higher level (6) when associated with dressing changes.
Data on how RDEB affected quality of life were reported for 39 adults completing the 17-item Quality of Life in EB Questionnaire (QOLEB) and eight children who were able to complete the Pediatric Quality of Life Inventory (PedsQL) with the aid of their parents.
Dr. Mellerio reported that adults with RDEB-GS had an overall QOLEB score of 24 out of 50, an indication that their condition had a severe impact on their quality of life. The effect on quality of life was greater in terms of their physical functioning than emotional well-being, with respective scores of 19 out of 36, and 5 out of a possible 15. Less impact on quality of life was reported by participants with other RDEB subtypes.
PedsQL scores for the children indicated there might be a lesser effect of physical functioning on quality of life but a greater effect of emotional well-being on quality of life, but the numbers were small. “Interestingly, parents tended to rate their children’s impact on quality of life much higher than the children themselves,” Dr. Mellerio said.
The point of PEBLES is to start to understand the natural history of RDEB and to identify endpoints that might help in clinical trials of potential new treatments. Discussing the next steps for PEBLES, Dr. Mellerio said the aim was to recruit more pediatric patients and look at other data sets, such as bone health. The PEBLES team also hopes to extend recruitment to include other United Kingdom, and ultimately international, EB centers and, perhaps eventually to start to include other types of EB, such as EB simplex.
PEBLES is funded by DEBRA UK. Dr. Mellerio is a PEBLES investigator but had no conflicts of interest to disclose.
SOURCE: Mellerio JE et al. EB 2020. Pillay EI et al. Poster 77; Jeffs E et al. Poster 74; Jeffs et al. Poster 75. https://ebworldcongress.org/.
LONDON – More than £2.8 million (RDEB), according to a report at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA).
Results from the Prospective Epidermolysis Bullosa Longitudinal Evaluation Study (PEBLES), which is looking at the natural history of RDEB, showed that wound dressing and bandage costs were highest for study participants with the generalized severe (RDEB-GS) subtype, at just over £85,156 (about $112,450) per patient annually. Respective yearly costs for the generalized intermediate (RDEB-GI) and inversa (RDEB-INV) subtypes were £10,112 (about $13,350) and £1,699 (about $2,240) per patient.
Looking at the costs associated with EB is important, said one of the lead investigators for PEBLES, Jemima Mellerio, MD, FRCP, consultant dermatologist at St John’s Institute of Dermatology, at Guy’s & St. Thomas’ NHS Foundation Trust, London.
“If we are going to justify the kind of expenditure [associated with new treatments], we need to know that what we are treating is already a significant burden on our health care systems,” Dr. Mellerio said.
PEBLES is an ongoing London-based registry study that is enrolling patients with all subtypes of RDEB. Data are collected via a tablet device and include demographic data, information on clinical features, results of skin biopsies and genetic tests, and laboratory findings, as well as objective disease severity and subjective patient-orientated outcome scores.
So far, 60 patients – 49 adults and 11 children – have been enrolled in PEBLES since November 2014: 26 with RDEB-GS, 23 with RDEB-GI, 9 with RDEB-INV, and 2 with the pruriginosa RDEB subtype (RDEB-PR).
Most of the participants (71%) changed all their wound dressings at one time, patching up when required. Fourteen of 49 participants had paid people to help them change their dressings and when the total cost of combined wound dressings and paid care was taken into consideration, the mean annual cost per patient was around £2,500 (about $3,300) for RDEB-INV, £10,375 (about $13,700) per patient for RDEB-GS, and a staggering £98,000 (about $129,000) per patient for RDEB-GS. The total annual cost of dressings and associated care was an estimated £3,184,229 (about $4.2 million).
In addition to data on the cost of wound dressings, data on itch and pain and quality of life were presented at the EB World Congress and discussed by Dr. Mellerio.
A total of 42 participants older than 8 years of age had itch measured via the Leuven Itch Scale, she reported, noting that itch was a consistent symptom across all subtypes of RDEB. Itch is important as it not only causes problems with skin lesions and healing, but also significantly affects sleep and has a negative impact on patients’ mood, she emphasized.
Despite experiencing itch, more than half (58%) of participants were not using any kind of treatment for itch. This “likely reflects the lack of effectiveness of current medication for this debilitating symptom,” Dr. Mellerio and associates noted in one of their poster presentations of PEBLES data.
When treatment was used for itch, it consisted mainly of antihistamines (19% of patients), emollients (19%), or a combination of both (4%). However, treatment was generally “not very good,” with a satisfaction score of just 5 on a scale of 10, Dr. Mellerio pointed out. Participants “reported frustration with the lack of effective treatment for itch,” she said.
Itch was associated with disturbed sleep 1-3 nights per week in 20%-40% of participants, and every night in 20%-30%.
Pain was found to be a significant problem, with a median level of background pain scored as 4 on a 10-cm visual analog scale and a higher level (6) when associated with dressing changes.
Data on how RDEB affected quality of life were reported for 39 adults completing the 17-item Quality of Life in EB Questionnaire (QOLEB) and eight children who were able to complete the Pediatric Quality of Life Inventory (PedsQL) with the aid of their parents.
Dr. Mellerio reported that adults with RDEB-GS had an overall QOLEB score of 24 out of 50, an indication that their condition had a severe impact on their quality of life. The effect on quality of life was greater in terms of their physical functioning than emotional well-being, with respective scores of 19 out of 36, and 5 out of a possible 15. Less impact on quality of life was reported by participants with other RDEB subtypes.
PedsQL scores for the children indicated there might be a lesser effect of physical functioning on quality of life but a greater effect of emotional well-being on quality of life, but the numbers were small. “Interestingly, parents tended to rate their children’s impact on quality of life much higher than the children themselves,” Dr. Mellerio said.
The point of PEBLES is to start to understand the natural history of RDEB and to identify endpoints that might help in clinical trials of potential new treatments. Discussing the next steps for PEBLES, Dr. Mellerio said the aim was to recruit more pediatric patients and look at other data sets, such as bone health. The PEBLES team also hopes to extend recruitment to include other United Kingdom, and ultimately international, EB centers and, perhaps eventually to start to include other types of EB, such as EB simplex.
PEBLES is funded by DEBRA UK. Dr. Mellerio is a PEBLES investigator but had no conflicts of interest to disclose.
SOURCE: Mellerio JE et al. EB 2020. Pillay EI et al. Poster 77; Jeffs E et al. Poster 74; Jeffs et al. Poster 75. https://ebworldcongress.org/.
LONDON – More than £2.8 million (RDEB), according to a report at the EB World Congress, organized by the Dystrophic Epidermolysis Bullosa Association (DEBRA).
Results from the Prospective Epidermolysis Bullosa Longitudinal Evaluation Study (PEBLES), which is looking at the natural history of RDEB, showed that wound dressing and bandage costs were highest for study participants with the generalized severe (RDEB-GS) subtype, at just over £85,156 (about $112,450) per patient annually. Respective yearly costs for the generalized intermediate (RDEB-GI) and inversa (RDEB-INV) subtypes were £10,112 (about $13,350) and £1,699 (about $2,240) per patient.
Looking at the costs associated with EB is important, said one of the lead investigators for PEBLES, Jemima Mellerio, MD, FRCP, consultant dermatologist at St John’s Institute of Dermatology, at Guy’s & St. Thomas’ NHS Foundation Trust, London.
“If we are going to justify the kind of expenditure [associated with new treatments], we need to know that what we are treating is already a significant burden on our health care systems,” Dr. Mellerio said.
PEBLES is an ongoing London-based registry study that is enrolling patients with all subtypes of RDEB. Data are collected via a tablet device and include demographic data, information on clinical features, results of skin biopsies and genetic tests, and laboratory findings, as well as objective disease severity and subjective patient-orientated outcome scores.
So far, 60 patients – 49 adults and 11 children – have been enrolled in PEBLES since November 2014: 26 with RDEB-GS, 23 with RDEB-GI, 9 with RDEB-INV, and 2 with the pruriginosa RDEB subtype (RDEB-PR).
Most of the participants (71%) changed all their wound dressings at one time, patching up when required. Fourteen of 49 participants had paid people to help them change their dressings and when the total cost of combined wound dressings and paid care was taken into consideration, the mean annual cost per patient was around £2,500 (about $3,300) for RDEB-INV, £10,375 (about $13,700) per patient for RDEB-GS, and a staggering £98,000 (about $129,000) per patient for RDEB-GS. The total annual cost of dressings and associated care was an estimated £3,184,229 (about $4.2 million).
In addition to data on the cost of wound dressings, data on itch and pain and quality of life were presented at the EB World Congress and discussed by Dr. Mellerio.
A total of 42 participants older than 8 years of age had itch measured via the Leuven Itch Scale, she reported, noting that itch was a consistent symptom across all subtypes of RDEB. Itch is important as it not only causes problems with skin lesions and healing, but also significantly affects sleep and has a negative impact on patients’ mood, she emphasized.
Despite experiencing itch, more than half (58%) of participants were not using any kind of treatment for itch. This “likely reflects the lack of effectiveness of current medication for this debilitating symptom,” Dr. Mellerio and associates noted in one of their poster presentations of PEBLES data.
When treatment was used for itch, it consisted mainly of antihistamines (19% of patients), emollients (19%), or a combination of both (4%). However, treatment was generally “not very good,” with a satisfaction score of just 5 on a scale of 10, Dr. Mellerio pointed out. Participants “reported frustration with the lack of effective treatment for itch,” she said.
Itch was associated with disturbed sleep 1-3 nights per week in 20%-40% of participants, and every night in 20%-30%.
Pain was found to be a significant problem, with a median level of background pain scored as 4 on a 10-cm visual analog scale and a higher level (6) when associated with dressing changes.
Data on how RDEB affected quality of life were reported for 39 adults completing the 17-item Quality of Life in EB Questionnaire (QOLEB) and eight children who were able to complete the Pediatric Quality of Life Inventory (PedsQL) with the aid of their parents.
Dr. Mellerio reported that adults with RDEB-GS had an overall QOLEB score of 24 out of 50, an indication that their condition had a severe impact on their quality of life. The effect on quality of life was greater in terms of their physical functioning than emotional well-being, with respective scores of 19 out of 36, and 5 out of a possible 15. Less impact on quality of life was reported by participants with other RDEB subtypes.
PedsQL scores for the children indicated there might be a lesser effect of physical functioning on quality of life but a greater effect of emotional well-being on quality of life, but the numbers were small. “Interestingly, parents tended to rate their children’s impact on quality of life much higher than the children themselves,” Dr. Mellerio said.
The point of PEBLES is to start to understand the natural history of RDEB and to identify endpoints that might help in clinical trials of potential new treatments. Discussing the next steps for PEBLES, Dr. Mellerio said the aim was to recruit more pediatric patients and look at other data sets, such as bone health. The PEBLES team also hopes to extend recruitment to include other United Kingdom, and ultimately international, EB centers and, perhaps eventually to start to include other types of EB, such as EB simplex.
PEBLES is funded by DEBRA UK. Dr. Mellerio is a PEBLES investigator but had no conflicts of interest to disclose.
SOURCE: Mellerio JE et al. EB 2020. Pillay EI et al. Poster 77; Jeffs E et al. Poster 74; Jeffs et al. Poster 75. https://ebworldcongress.org/.
REPORTING FROM EB 2020
Novel approaches to treating NASH in diabetes
BARCELONA – The investigational oral agent cenicriviroc showed positive effects on liver fibrosis in adults with nonalcoholic steatohepatitis (NASH), many of whom had type 2 diabetes, in a phase 2b trial reported at the annual meeting of the European Association for the Study of Diabetes.
Other data released at the meeting, which showed potential positive effects of novel or existing diabetes treatments on nonalcoholic fatty liver disease (NAFLD), included post hoc analyses of a phase 2b study with tirzepatide and a phase 3 study that combined exenatide and dapagliflozin.
Currently, no medications for NAFLD or NASH have been approved in the United States.
CENTAUR with cenicriviroc
Results of the previously reported CENTAUR trial showed that the antifibrotic effects of cenicriviroc, a dual chemokine receptor antagonist, were greatest in patients with more-severe liver disease (Hepatology. 2018;67[5]:1754-67). At the meeting, Henrik Landgren, PhD, of Allergan, presented data from the 2-year trial overall, and specifically in patients with advanced, stage 3 fibrosis.
CENTAUR was a randomized, double-blind, placebo-controlled, multinational study with 289 adults who had biopsy-confirmed NASH, an NAFLD Activity Score (NAS; range, 0-8; score of 5 or more diagnostic of NASH) of 4 or more, and stages 1-3 liver fibrosis as determined by the NASH clinical research network system (Contemp Clin Trials. 2016;47:356-65). The mean age of the patients enrolled at baseline was 54 years, the mean body mass index was 33.9 kg/m2, and just more than half the patients (52%) had type 2 diabetes.
The patients were randomized to three treatment arms: cenicriviroc 150 mg for 2 years; placebo for 1 year, then cenicriviroc 150 mg for 1 year; or placebo for 2 years. The primary endpoint was histologic improvement (reduction of 2 or more points in overall NAS, with reduction of 1 or more points in more than one category of the NAS without worsening of fibrosis at the end of year 1. The key secondary endpoint was complete NASH resolution without worsening of fibrosis at year 2.
Dr. Landgren reported that, at year 1, of the total number of patients, 28.6% of those receiving cenicriviroc achieved an improvement in fibrosis of one or more stages, compared with 19.0% of those receiving placebo. Of the 97 patients who had advanced fibrosis at baseline, 38.3% of those on cenicriviroc and 28.0% of those on placebo achieved the same endpoint.
Those effects were sustained at year 2, Dr. Landgren emphasized, with twice as many cenicriviroc- than placebo-treated patients achieving one or more stage improvement in fibrosis and no worsening of NASH at year 2 (60% and 30%, respectively), with more pronounced improvements in those who had advanced fibrosis at baseline (86% and 60%).
In addition, analyses of biomarkers suggested that cenicriviroc had systematic anti-inflammatory activity, with reductions observed in high-sensitivity C-reactive protein; fibrinogen; and levels of interleukin-6, IL-8, and IL-1-beta.
Dr. Landgren and colleagues noted that cenicriviroc provided antifibrotic benefit in patients with NASH and fibrosis. Those benefits were sustained through year 2 and were more pronounced in patients who had advanced fibrosis at baseline.
The safety of cenicriviroc was “comparable with placebo,” he said, suggesting that the data supported the phase 3 AURORA study that is currently recruiting.
Tirzepatide for NASH
Another approach worth exploring for the treatment of NASH, is the use of tirzepatide, a dual agonist of glucose-dependent insulinotropic polypeptide and the glucagonlike peptide–1 (GLP-1) receptor, according to Axel Haupt, MD, PhD, of Eli Lilly.
Tirzepatide (LY3298176) is currently under investigation for the treatment of type 2 diabetes, and Dr. Haupt reported data from a post hoc analysis of a double-blind, placebo-controlled, phase 2b study showing that “exploratory” serum markers of apoptosis and fibrosis – keratin-18 (K-18) and Pro-C3, respectively – were decreased from baseline to a greater extent in patients treated with tirzepatide than with placebo, while total adiponectin was increased. The latter is “thought to protect the liver from inflammation and fibrosis,” Dr. Haupt observed.
The main results of the trial were published last year (Lancet. 2018;392:2180-93) and showed that, after 26 weeks, there was a dose-dependent decrease in both glycated hemoglobin (HbA1c) and body weight with tirzepatide 10 mg and 15 mg, compared with placebo and an active comparator, dulaglutide 1.5 mg.
The study population was typical of type 2 diabetes: baseline HbA1c was 8.1%; the average body mass index was 32 kg/m2, with a diabetes duration of 5 years; and the main treatment (90%) had been metformin.
The rationale for the NASH-related biomarker analysis was that type 2 diabetes and NAFLD were known to be overlapping conditions, and weight loss had been shown to be an effective means of resolving NASH, Dr. Haupt said. In addition, a small “proof-of-concept” study with the GLP-1 receptor agonist liraglutide had suggested that these drugs may be effective in NASH.
Tirzepatide, at doses of 5, 10, and 15 mg, was associated with significant decreases in K-18 from baseline to week 26 and compared with placebo and the 1-mg tirzepatide dose. Mean baseline concentrations of K-18 were 394.4 U/L in the placebo group and reduced by 22.6 U/L by week 26. Corresponding baseline values for tirzepatide 5 mg were 375.8 U/L (change, –87.6 U/L); for 10 mg, 409.9 U/L (–157.8 U/L); and for 15 mg, 376.2 U/L (–110.6 U/L).
Dr. Haupt noted that a K-18 value of 250 U/L was considered a cutoff for a diagnosis of NASH. “So we really think that we have some NASH patients in this population,” he observed.
At week 26, Pro-C3 levels significantly decreased by 1.2 ng/mL from a baseline of 8.6 ng/mL with tirzepatide 15 mg, compared with an increase of 0.9 ng/mL from a baseline of 9.3 ng/mL for placebo (P less than .05). However, values of between 15-20 ng/mL would be expected for advanced fibrosis, Dr. Haupt said, “so we think we [don’t] have a lot of patients with advanced fibrosis, we have a lower grade of fibrosis or no fibrosis in our patient population.”
By week 26, adiponectin levels significantly increased by 0.9 mg/L from baseline, both with tirzepatide 10 mg (P less than .05) and 15 mg (P less than .05), compared with placebo (–0.1 mg/L; both P less than .05).
“This study was really designed as a type 2 diabetes efficacy study, so the NASH biomarker work is exploratory and only hypothesis generating,” Dr. Haupt noted. “We think there is overlap in type 2 diabetes and NASH, but it is not an ideal population to look into those biomarkers.” There are also other limitations, such as the baseline values across treatment groups not being matched, so there is likely to be some inconsistency in these data, he added.
That said, Dr. Haupt concluded that, “along with the weight-loss findings,” these exploratory biomarker findings supported the further evaluation of tirzepatide in patients with NASH.”
DURATION-8: Exenatide plus dapagliflozin
In another hypothesis-generating post hoc analysis, this time of the phase 3 DURATION-8 clinical trial, a combination of exenatide and dapagliflozin was found to have a beneficial effect on markers of hepatic steatosis and fibrosis in patients with type 2 diabetes.
“We have some good evidence that both GLP-1 receptor agonists and SGLT2 [sodium-glucose cotransporter 2] inhibitors may have benefits in reducing steatosis and even steatohepatitis in [patients with] type 2 diabetes. So the association of two diabetes drugs might provide an advantage. However, this had not previously been tested in a randomized, controlled trial,” observed Cristian Guja, MD, PhD, of Carol Davila University of Medicine and Pharmacy in Bucharest, Romania.
The main aims of the DURATION-8 clinical trial, which ran for 104 weeks, was to compare the efficacy and safety of combining exenatide (2 mg, once a week) and dapagliflozin (10 mg, daily) with either exenatide 2 mg with placebo or dapagliflozin 10 mg with placebo. Results showed greater improved glycemic control and reductions in body weight and systolic BP with the exenatide-dapagliflozin combination.
A total of 685 patients were included in the post hoc analysis, of whom 228 had been treated with the combination, 228 with exenatide plus placebo, and 230 with dapagliflozin plus placebo. At baseline, levels of the markers of NAFLD and fibrosis that were assessed were similar between the groups. Between 81% and 93% of study participants had fatty liver or steatosis as defined by a Fatty Liver Index (FLI) of 60 or more or an overall NAFLD Liver Fat Score (NLFS) of –0.64 or higher. Between 9% and 13% of patients had liver fibrosis, as defined as an NAFLD Fibrosis Score (NFS) above 0.676, a Fibrosis-4 score (FIB-4) of 1.46 or more, or both.
At 28 weeks, the proportion of patients with biomarker scores suggestive of fatty liver disease or steatosis was significantly reduced from baseline with the exenatide-dapagliflozin combination (–10.5% for FLI of 60 or more; –6.5% for NLFS of –0.640 or more), Dr. Guja said, and biomarker scores suggestive of advanced fibrosis (NFS greater than 0.676; FIB-4 of 1.46 or more) were reduced by 4.1% and 3.6%, respectively.
At 28 and 52 weeks, the combination therapy showed stronger effects than exenatide and dapagliflozin alone in improving markers of hepatic steatosis (FLI: 28 weeks, –6.81, –3.90, –4.04; and 52 weeks, –6.23, –3.00, –4.58). The combination therapy also showed improvement for advanced fibrosis biomarkers at both time points (FIB-4: 28 weeks, –0.06, –0.03, –0.04; and 52 weeks, –0.05, –0.02, –0,04).
Dr. Guja noted that, although the study was not powered to assess the effect of on fatty liver, making all these data exploratory, this was the first analysis to describe improvements in biomarkers of fatty liver or steatosis and fibrosis from a large trial. “Some specific, dedicated, prospective trials are needed in the future to validate these findings.”
The CENTAUR study was funded by Allergan, of which Dr. Landgren is an employee. The phase 2b study with tirzepatide was supported by Eli Lilly. Dr. Haupt disclosed being an employee and also holding stocks in the company. The DURATION-8 study was sponsored by AstraZeneca. Dr. Guja disclosed that he had participated in scientific advisory boards and received consulting fees from AstraZeneca and other companies.
SOURCES: Landgren H et al. EASD 2019, Oral Presentation 179; Haupt A et al. EASD 2019, Oral Presentation 177; Guja C et al. EASD 2019, Oral Presentation 178.
BARCELONA – The investigational oral agent cenicriviroc showed positive effects on liver fibrosis in adults with nonalcoholic steatohepatitis (NASH), many of whom had type 2 diabetes, in a phase 2b trial reported at the annual meeting of the European Association for the Study of Diabetes.
Other data released at the meeting, which showed potential positive effects of novel or existing diabetes treatments on nonalcoholic fatty liver disease (NAFLD), included post hoc analyses of a phase 2b study with tirzepatide and a phase 3 study that combined exenatide and dapagliflozin.
Currently, no medications for NAFLD or NASH have been approved in the United States.
CENTAUR with cenicriviroc
Results of the previously reported CENTAUR trial showed that the antifibrotic effects of cenicriviroc, a dual chemokine receptor antagonist, were greatest in patients with more-severe liver disease (Hepatology. 2018;67[5]:1754-67). At the meeting, Henrik Landgren, PhD, of Allergan, presented data from the 2-year trial overall, and specifically in patients with advanced, stage 3 fibrosis.
CENTAUR was a randomized, double-blind, placebo-controlled, multinational study with 289 adults who had biopsy-confirmed NASH, an NAFLD Activity Score (NAS; range, 0-8; score of 5 or more diagnostic of NASH) of 4 or more, and stages 1-3 liver fibrosis as determined by the NASH clinical research network system (Contemp Clin Trials. 2016;47:356-65). The mean age of the patients enrolled at baseline was 54 years, the mean body mass index was 33.9 kg/m2, and just more than half the patients (52%) had type 2 diabetes.
The patients were randomized to three treatment arms: cenicriviroc 150 mg for 2 years; placebo for 1 year, then cenicriviroc 150 mg for 1 year; or placebo for 2 years. The primary endpoint was histologic improvement (reduction of 2 or more points in overall NAS, with reduction of 1 or more points in more than one category of the NAS without worsening of fibrosis at the end of year 1. The key secondary endpoint was complete NASH resolution without worsening of fibrosis at year 2.
Dr. Landgren reported that, at year 1, of the total number of patients, 28.6% of those receiving cenicriviroc achieved an improvement in fibrosis of one or more stages, compared with 19.0% of those receiving placebo. Of the 97 patients who had advanced fibrosis at baseline, 38.3% of those on cenicriviroc and 28.0% of those on placebo achieved the same endpoint.
Those effects were sustained at year 2, Dr. Landgren emphasized, with twice as many cenicriviroc- than placebo-treated patients achieving one or more stage improvement in fibrosis and no worsening of NASH at year 2 (60% and 30%, respectively), with more pronounced improvements in those who had advanced fibrosis at baseline (86% and 60%).
In addition, analyses of biomarkers suggested that cenicriviroc had systematic anti-inflammatory activity, with reductions observed in high-sensitivity C-reactive protein; fibrinogen; and levels of interleukin-6, IL-8, and IL-1-beta.
Dr. Landgren and colleagues noted that cenicriviroc provided antifibrotic benefit in patients with NASH and fibrosis. Those benefits were sustained through year 2 and were more pronounced in patients who had advanced fibrosis at baseline.
The safety of cenicriviroc was “comparable with placebo,” he said, suggesting that the data supported the phase 3 AURORA study that is currently recruiting.
Tirzepatide for NASH
Another approach worth exploring for the treatment of NASH, is the use of tirzepatide, a dual agonist of glucose-dependent insulinotropic polypeptide and the glucagonlike peptide–1 (GLP-1) receptor, according to Axel Haupt, MD, PhD, of Eli Lilly.
Tirzepatide (LY3298176) is currently under investigation for the treatment of type 2 diabetes, and Dr. Haupt reported data from a post hoc analysis of a double-blind, placebo-controlled, phase 2b study showing that “exploratory” serum markers of apoptosis and fibrosis – keratin-18 (K-18) and Pro-C3, respectively – were decreased from baseline to a greater extent in patients treated with tirzepatide than with placebo, while total adiponectin was increased. The latter is “thought to protect the liver from inflammation and fibrosis,” Dr. Haupt observed.
The main results of the trial were published last year (Lancet. 2018;392:2180-93) and showed that, after 26 weeks, there was a dose-dependent decrease in both glycated hemoglobin (HbA1c) and body weight with tirzepatide 10 mg and 15 mg, compared with placebo and an active comparator, dulaglutide 1.5 mg.
The study population was typical of type 2 diabetes: baseline HbA1c was 8.1%; the average body mass index was 32 kg/m2, with a diabetes duration of 5 years; and the main treatment (90%) had been metformin.
The rationale for the NASH-related biomarker analysis was that type 2 diabetes and NAFLD were known to be overlapping conditions, and weight loss had been shown to be an effective means of resolving NASH, Dr. Haupt said. In addition, a small “proof-of-concept” study with the GLP-1 receptor agonist liraglutide had suggested that these drugs may be effective in NASH.
Tirzepatide, at doses of 5, 10, and 15 mg, was associated with significant decreases in K-18 from baseline to week 26 and compared with placebo and the 1-mg tirzepatide dose. Mean baseline concentrations of K-18 were 394.4 U/L in the placebo group and reduced by 22.6 U/L by week 26. Corresponding baseline values for tirzepatide 5 mg were 375.8 U/L (change, –87.6 U/L); for 10 mg, 409.9 U/L (–157.8 U/L); and for 15 mg, 376.2 U/L (–110.6 U/L).
Dr. Haupt noted that a K-18 value of 250 U/L was considered a cutoff for a diagnosis of NASH. “So we really think that we have some NASH patients in this population,” he observed.
At week 26, Pro-C3 levels significantly decreased by 1.2 ng/mL from a baseline of 8.6 ng/mL with tirzepatide 15 mg, compared with an increase of 0.9 ng/mL from a baseline of 9.3 ng/mL for placebo (P less than .05). However, values of between 15-20 ng/mL would be expected for advanced fibrosis, Dr. Haupt said, “so we think we [don’t] have a lot of patients with advanced fibrosis, we have a lower grade of fibrosis or no fibrosis in our patient population.”
By week 26, adiponectin levels significantly increased by 0.9 mg/L from baseline, both with tirzepatide 10 mg (P less than .05) and 15 mg (P less than .05), compared with placebo (–0.1 mg/L; both P less than .05).
“This study was really designed as a type 2 diabetes efficacy study, so the NASH biomarker work is exploratory and only hypothesis generating,” Dr. Haupt noted. “We think there is overlap in type 2 diabetes and NASH, but it is not an ideal population to look into those biomarkers.” There are also other limitations, such as the baseline values across treatment groups not being matched, so there is likely to be some inconsistency in these data, he added.
That said, Dr. Haupt concluded that, “along with the weight-loss findings,” these exploratory biomarker findings supported the further evaluation of tirzepatide in patients with NASH.”
DURATION-8: Exenatide plus dapagliflozin
In another hypothesis-generating post hoc analysis, this time of the phase 3 DURATION-8 clinical trial, a combination of exenatide and dapagliflozin was found to have a beneficial effect on markers of hepatic steatosis and fibrosis in patients with type 2 diabetes.
“We have some good evidence that both GLP-1 receptor agonists and SGLT2 [sodium-glucose cotransporter 2] inhibitors may have benefits in reducing steatosis and even steatohepatitis in [patients with] type 2 diabetes. So the association of two diabetes drugs might provide an advantage. However, this had not previously been tested in a randomized, controlled trial,” observed Cristian Guja, MD, PhD, of Carol Davila University of Medicine and Pharmacy in Bucharest, Romania.
The main aims of the DURATION-8 clinical trial, which ran for 104 weeks, was to compare the efficacy and safety of combining exenatide (2 mg, once a week) and dapagliflozin (10 mg, daily) with either exenatide 2 mg with placebo or dapagliflozin 10 mg with placebo. Results showed greater improved glycemic control and reductions in body weight and systolic BP with the exenatide-dapagliflozin combination.
A total of 685 patients were included in the post hoc analysis, of whom 228 had been treated with the combination, 228 with exenatide plus placebo, and 230 with dapagliflozin plus placebo. At baseline, levels of the markers of NAFLD and fibrosis that were assessed were similar between the groups. Between 81% and 93% of study participants had fatty liver or steatosis as defined by a Fatty Liver Index (FLI) of 60 or more or an overall NAFLD Liver Fat Score (NLFS) of –0.64 or higher. Between 9% and 13% of patients had liver fibrosis, as defined as an NAFLD Fibrosis Score (NFS) above 0.676, a Fibrosis-4 score (FIB-4) of 1.46 or more, or both.
At 28 weeks, the proportion of patients with biomarker scores suggestive of fatty liver disease or steatosis was significantly reduced from baseline with the exenatide-dapagliflozin combination (–10.5% for FLI of 60 or more; –6.5% for NLFS of –0.640 or more), Dr. Guja said, and biomarker scores suggestive of advanced fibrosis (NFS greater than 0.676; FIB-4 of 1.46 or more) were reduced by 4.1% and 3.6%, respectively.
At 28 and 52 weeks, the combination therapy showed stronger effects than exenatide and dapagliflozin alone in improving markers of hepatic steatosis (FLI: 28 weeks, –6.81, –3.90, –4.04; and 52 weeks, –6.23, –3.00, –4.58). The combination therapy also showed improvement for advanced fibrosis biomarkers at both time points (FIB-4: 28 weeks, –0.06, –0.03, –0.04; and 52 weeks, –0.05, –0.02, –0,04).
Dr. Guja noted that, although the study was not powered to assess the effect of on fatty liver, making all these data exploratory, this was the first analysis to describe improvements in biomarkers of fatty liver or steatosis and fibrosis from a large trial. “Some specific, dedicated, prospective trials are needed in the future to validate these findings.”
The CENTAUR study was funded by Allergan, of which Dr. Landgren is an employee. The phase 2b study with tirzepatide was supported by Eli Lilly. Dr. Haupt disclosed being an employee and also holding stocks in the company. The DURATION-8 study was sponsored by AstraZeneca. Dr. Guja disclosed that he had participated in scientific advisory boards and received consulting fees from AstraZeneca and other companies.
SOURCES: Landgren H et al. EASD 2019, Oral Presentation 179; Haupt A et al. EASD 2019, Oral Presentation 177; Guja C et al. EASD 2019, Oral Presentation 178.
BARCELONA – The investigational oral agent cenicriviroc showed positive effects on liver fibrosis in adults with nonalcoholic steatohepatitis (NASH), many of whom had type 2 diabetes, in a phase 2b trial reported at the annual meeting of the European Association for the Study of Diabetes.
Other data released at the meeting, which showed potential positive effects of novel or existing diabetes treatments on nonalcoholic fatty liver disease (NAFLD), included post hoc analyses of a phase 2b study with tirzepatide and a phase 3 study that combined exenatide and dapagliflozin.
Currently, no medications for NAFLD or NASH have been approved in the United States.
CENTAUR with cenicriviroc
Results of the previously reported CENTAUR trial showed that the antifibrotic effects of cenicriviroc, a dual chemokine receptor antagonist, were greatest in patients with more-severe liver disease (Hepatology. 2018;67[5]:1754-67). At the meeting, Henrik Landgren, PhD, of Allergan, presented data from the 2-year trial overall, and specifically in patients with advanced, stage 3 fibrosis.
CENTAUR was a randomized, double-blind, placebo-controlled, multinational study with 289 adults who had biopsy-confirmed NASH, an NAFLD Activity Score (NAS; range, 0-8; score of 5 or more diagnostic of NASH) of 4 or more, and stages 1-3 liver fibrosis as determined by the NASH clinical research network system (Contemp Clin Trials. 2016;47:356-65). The mean age of the patients enrolled at baseline was 54 years, the mean body mass index was 33.9 kg/m2, and just more than half the patients (52%) had type 2 diabetes.
The patients were randomized to three treatment arms: cenicriviroc 150 mg for 2 years; placebo for 1 year, then cenicriviroc 150 mg for 1 year; or placebo for 2 years. The primary endpoint was histologic improvement (reduction of 2 or more points in overall NAS, with reduction of 1 or more points in more than one category of the NAS without worsening of fibrosis at the end of year 1. The key secondary endpoint was complete NASH resolution without worsening of fibrosis at year 2.
Dr. Landgren reported that, at year 1, of the total number of patients, 28.6% of those receiving cenicriviroc achieved an improvement in fibrosis of one or more stages, compared with 19.0% of those receiving placebo. Of the 97 patients who had advanced fibrosis at baseline, 38.3% of those on cenicriviroc and 28.0% of those on placebo achieved the same endpoint.
Those effects were sustained at year 2, Dr. Landgren emphasized, with twice as many cenicriviroc- than placebo-treated patients achieving one or more stage improvement in fibrosis and no worsening of NASH at year 2 (60% and 30%, respectively), with more pronounced improvements in those who had advanced fibrosis at baseline (86% and 60%).
In addition, analyses of biomarkers suggested that cenicriviroc had systematic anti-inflammatory activity, with reductions observed in high-sensitivity C-reactive protein; fibrinogen; and levels of interleukin-6, IL-8, and IL-1-beta.
Dr. Landgren and colleagues noted that cenicriviroc provided antifibrotic benefit in patients with NASH and fibrosis. Those benefits were sustained through year 2 and were more pronounced in patients who had advanced fibrosis at baseline.
The safety of cenicriviroc was “comparable with placebo,” he said, suggesting that the data supported the phase 3 AURORA study that is currently recruiting.
Tirzepatide for NASH
Another approach worth exploring for the treatment of NASH, is the use of tirzepatide, a dual agonist of glucose-dependent insulinotropic polypeptide and the glucagonlike peptide–1 (GLP-1) receptor, according to Axel Haupt, MD, PhD, of Eli Lilly.
Tirzepatide (LY3298176) is currently under investigation for the treatment of type 2 diabetes, and Dr. Haupt reported data from a post hoc analysis of a double-blind, placebo-controlled, phase 2b study showing that “exploratory” serum markers of apoptosis and fibrosis – keratin-18 (K-18) and Pro-C3, respectively – were decreased from baseline to a greater extent in patients treated with tirzepatide than with placebo, while total adiponectin was increased. The latter is “thought to protect the liver from inflammation and fibrosis,” Dr. Haupt observed.
The main results of the trial were published last year (Lancet. 2018;392:2180-93) and showed that, after 26 weeks, there was a dose-dependent decrease in both glycated hemoglobin (HbA1c) and body weight with tirzepatide 10 mg and 15 mg, compared with placebo and an active comparator, dulaglutide 1.5 mg.
The study population was typical of type 2 diabetes: baseline HbA1c was 8.1%; the average body mass index was 32 kg/m2, with a diabetes duration of 5 years; and the main treatment (90%) had been metformin.
The rationale for the NASH-related biomarker analysis was that type 2 diabetes and NAFLD were known to be overlapping conditions, and weight loss had been shown to be an effective means of resolving NASH, Dr. Haupt said. In addition, a small “proof-of-concept” study with the GLP-1 receptor agonist liraglutide had suggested that these drugs may be effective in NASH.
Tirzepatide, at doses of 5, 10, and 15 mg, was associated with significant decreases in K-18 from baseline to week 26 and compared with placebo and the 1-mg tirzepatide dose. Mean baseline concentrations of K-18 were 394.4 U/L in the placebo group and reduced by 22.6 U/L by week 26. Corresponding baseline values for tirzepatide 5 mg were 375.8 U/L (change, –87.6 U/L); for 10 mg, 409.9 U/L (–157.8 U/L); and for 15 mg, 376.2 U/L (–110.6 U/L).
Dr. Haupt noted that a K-18 value of 250 U/L was considered a cutoff for a diagnosis of NASH. “So we really think that we have some NASH patients in this population,” he observed.
At week 26, Pro-C3 levels significantly decreased by 1.2 ng/mL from a baseline of 8.6 ng/mL with tirzepatide 15 mg, compared with an increase of 0.9 ng/mL from a baseline of 9.3 ng/mL for placebo (P less than .05). However, values of between 15-20 ng/mL would be expected for advanced fibrosis, Dr. Haupt said, “so we think we [don’t] have a lot of patients with advanced fibrosis, we have a lower grade of fibrosis or no fibrosis in our patient population.”
By week 26, adiponectin levels significantly increased by 0.9 mg/L from baseline, both with tirzepatide 10 mg (P less than .05) and 15 mg (P less than .05), compared with placebo (–0.1 mg/L; both P less than .05).
“This study was really designed as a type 2 diabetes efficacy study, so the NASH biomarker work is exploratory and only hypothesis generating,” Dr. Haupt noted. “We think there is overlap in type 2 diabetes and NASH, but it is not an ideal population to look into those biomarkers.” There are also other limitations, such as the baseline values across treatment groups not being matched, so there is likely to be some inconsistency in these data, he added.
That said, Dr. Haupt concluded that, “along with the weight-loss findings,” these exploratory biomarker findings supported the further evaluation of tirzepatide in patients with NASH.”
DURATION-8: Exenatide plus dapagliflozin
In another hypothesis-generating post hoc analysis, this time of the phase 3 DURATION-8 clinical trial, a combination of exenatide and dapagliflozin was found to have a beneficial effect on markers of hepatic steatosis and fibrosis in patients with type 2 diabetes.
“We have some good evidence that both GLP-1 receptor agonists and SGLT2 [sodium-glucose cotransporter 2] inhibitors may have benefits in reducing steatosis and even steatohepatitis in [patients with] type 2 diabetes. So the association of two diabetes drugs might provide an advantage. However, this had not previously been tested in a randomized, controlled trial,” observed Cristian Guja, MD, PhD, of Carol Davila University of Medicine and Pharmacy in Bucharest, Romania.
The main aims of the DURATION-8 clinical trial, which ran for 104 weeks, was to compare the efficacy and safety of combining exenatide (2 mg, once a week) and dapagliflozin (10 mg, daily) with either exenatide 2 mg with placebo or dapagliflozin 10 mg with placebo. Results showed greater improved glycemic control and reductions in body weight and systolic BP with the exenatide-dapagliflozin combination.
A total of 685 patients were included in the post hoc analysis, of whom 228 had been treated with the combination, 228 with exenatide plus placebo, and 230 with dapagliflozin plus placebo. At baseline, levels of the markers of NAFLD and fibrosis that were assessed were similar between the groups. Between 81% and 93% of study participants had fatty liver or steatosis as defined by a Fatty Liver Index (FLI) of 60 or more or an overall NAFLD Liver Fat Score (NLFS) of –0.64 or higher. Between 9% and 13% of patients had liver fibrosis, as defined as an NAFLD Fibrosis Score (NFS) above 0.676, a Fibrosis-4 score (FIB-4) of 1.46 or more, or both.
At 28 weeks, the proportion of patients with biomarker scores suggestive of fatty liver disease or steatosis was significantly reduced from baseline with the exenatide-dapagliflozin combination (–10.5% for FLI of 60 or more; –6.5% for NLFS of –0.640 or more), Dr. Guja said, and biomarker scores suggestive of advanced fibrosis (NFS greater than 0.676; FIB-4 of 1.46 or more) were reduced by 4.1% and 3.6%, respectively.
At 28 and 52 weeks, the combination therapy showed stronger effects than exenatide and dapagliflozin alone in improving markers of hepatic steatosis (FLI: 28 weeks, –6.81, –3.90, –4.04; and 52 weeks, –6.23, –3.00, –4.58). The combination therapy also showed improvement for advanced fibrosis biomarkers at both time points (FIB-4: 28 weeks, –0.06, –0.03, –0.04; and 52 weeks, –0.05, –0.02, –0,04).
Dr. Guja noted that, although the study was not powered to assess the effect of on fatty liver, making all these data exploratory, this was the first analysis to describe improvements in biomarkers of fatty liver or steatosis and fibrosis from a large trial. “Some specific, dedicated, prospective trials are needed in the future to validate these findings.”
The CENTAUR study was funded by Allergan, of which Dr. Landgren is an employee. The phase 2b study with tirzepatide was supported by Eli Lilly. Dr. Haupt disclosed being an employee and also holding stocks in the company. The DURATION-8 study was sponsored by AstraZeneca. Dr. Guja disclosed that he had participated in scientific advisory boards and received consulting fees from AstraZeneca and other companies.
SOURCES: Landgren H et al. EASD 2019, Oral Presentation 179; Haupt A et al. EASD 2019, Oral Presentation 177; Guja C et al. EASD 2019, Oral Presentation 178.
REPORTING FROM EASD 2019
Tumor surroundings may hold key to TNBC treatment optimization
Tumor microenvironment (TME) profiles could help tailor treatment for triple-negative breast cancer (TNBC), with the TME profile of the immunomodulatory subtype of TNBC making it the most susceptible to the effects of the immune checkpoint inhibitors.
“This study allowed us to gain more insight into the complex interactions between tumor cells and their microenvironment, in particular immune cells,” wrote a team of Belgian and Canadian researchers. Their report is in the Journal of the National Cancer Institute.
At least five molecular subtypes of TNBC have been identified but little was previously known about the heterogeneity of their surroundings, noted Yacine Bareche, MSc, of Institut Jules Bordet, Université Libre de Bruxelles, Brussels, and associates. They looked at a series of 1,512 TNBC samples from four large and publicly available transcriptomic and genomic datasets and their TME, which is made up of many cell types – fibroblasts, adipose, and immune-inflammatory cells – and blood and lymphatic vascular networks.
The researchers explained that each of the four TNBC subtypes identified so far have “distinct mutational profiles, genomic alterations, and biological processes” which were matched by differences in their surrounding environments.
For instance, the immunomodulatory subtype of TNBC was associated with high expression of “adaptive immune-related gene signatures and a fully inflamed spatial pattern appearing to be the optimal candidate for immune check-point inhibitors.” By contrast, Mr. Bareche and coauthors said that “most mesenchymal stem-like and luminal androgen receptor TNBC tumors had an immunosuppressive phenotype with high expression levels of stromal gene signatures.”
The findings include “novel evidence” of how TNBC tumors may become resistant to the effects of immune checkpoint inhibitors.
The results demonstrate that each TNBC subtype is associated with specific TME profiles, “setting the ground for a rationale tailoring of immunotherapy in TNBC patients,” the researchers noted. Mr. Bareche and associates cautioned, however, that “prospective validation of our findings is warranted before their clinical implementation.”
The study was supported by a grant from the Breast Cancer Research Foundation. The researchers had no conflicts of interest.
SOURCE: Bareche Y et al. J Natl Cancer Inst. 2019 Oct 29. doi: 10.1093/jnci/djz208.
Of particular interest in the study by Bareche et al. is the different distribution of key immune targets. The observed distinctions between the immunomodulatory and basal-like TNBC subtypes, for example, might enable more rational trial design in which immunotherapy is preferentially evaluated in the more susceptible immunomodulatory tumors rather than basal-like tumors. Their findings also suggest that TNBC tumors other than the immunomodulatory subtype might need additional approaches to make them more susceptible to immune therapy or indeed require completely different treatment approaches. Immunologic differences between TNBC subtype microenvironments are highlighted but there are also higher-level domains identified – such as in the immune response, vascularization, stromal involvement and so on – that could make the research more generally applicable in the study and refinement of novel therapeutic strategies. Their work is just one of many steps forward in looking for predictive markers of a growing number of precision treatments for breast and other cancers.
Lior Z. Braunstein, MD, and Nadeem Riaz, MD, MSc are radiation oncologists at Memorial Sloan Kettering Cancer Center, New York. Dr. Riaz is associate director of genomics operations, Immunogenomics and Precision Oncology Platform. Their comments are summarized from the editorial accompanying the study by Bareche et al.; neither had conflicts of interest.
Of particular interest in the study by Bareche et al. is the different distribution of key immune targets. The observed distinctions between the immunomodulatory and basal-like TNBC subtypes, for example, might enable more rational trial design in which immunotherapy is preferentially evaluated in the more susceptible immunomodulatory tumors rather than basal-like tumors. Their findings also suggest that TNBC tumors other than the immunomodulatory subtype might need additional approaches to make them more susceptible to immune therapy or indeed require completely different treatment approaches. Immunologic differences between TNBC subtype microenvironments are highlighted but there are also higher-level domains identified – such as in the immune response, vascularization, stromal involvement and so on – that could make the research more generally applicable in the study and refinement of novel therapeutic strategies. Their work is just one of many steps forward in looking for predictive markers of a growing number of precision treatments for breast and other cancers.
Lior Z. Braunstein, MD, and Nadeem Riaz, MD, MSc are radiation oncologists at Memorial Sloan Kettering Cancer Center, New York. Dr. Riaz is associate director of genomics operations, Immunogenomics and Precision Oncology Platform. Their comments are summarized from the editorial accompanying the study by Bareche et al.; neither had conflicts of interest.
Of particular interest in the study by Bareche et al. is the different distribution of key immune targets. The observed distinctions between the immunomodulatory and basal-like TNBC subtypes, for example, might enable more rational trial design in which immunotherapy is preferentially evaluated in the more susceptible immunomodulatory tumors rather than basal-like tumors. Their findings also suggest that TNBC tumors other than the immunomodulatory subtype might need additional approaches to make them more susceptible to immune therapy or indeed require completely different treatment approaches. Immunologic differences between TNBC subtype microenvironments are highlighted but there are also higher-level domains identified – such as in the immune response, vascularization, stromal involvement and so on – that could make the research more generally applicable in the study and refinement of novel therapeutic strategies. Their work is just one of many steps forward in looking for predictive markers of a growing number of precision treatments for breast and other cancers.
Lior Z. Braunstein, MD, and Nadeem Riaz, MD, MSc are radiation oncologists at Memorial Sloan Kettering Cancer Center, New York. Dr. Riaz is associate director of genomics operations, Immunogenomics and Precision Oncology Platform. Their comments are summarized from the editorial accompanying the study by Bareche et al.; neither had conflicts of interest.
Tumor microenvironment (TME) profiles could help tailor treatment for triple-negative breast cancer (TNBC), with the TME profile of the immunomodulatory subtype of TNBC making it the most susceptible to the effects of the immune checkpoint inhibitors.
“This study allowed us to gain more insight into the complex interactions between tumor cells and their microenvironment, in particular immune cells,” wrote a team of Belgian and Canadian researchers. Their report is in the Journal of the National Cancer Institute.
At least five molecular subtypes of TNBC have been identified but little was previously known about the heterogeneity of their surroundings, noted Yacine Bareche, MSc, of Institut Jules Bordet, Université Libre de Bruxelles, Brussels, and associates. They looked at a series of 1,512 TNBC samples from four large and publicly available transcriptomic and genomic datasets and their TME, which is made up of many cell types – fibroblasts, adipose, and immune-inflammatory cells – and blood and lymphatic vascular networks.
The researchers explained that each of the four TNBC subtypes identified so far have “distinct mutational profiles, genomic alterations, and biological processes” which were matched by differences in their surrounding environments.
For instance, the immunomodulatory subtype of TNBC was associated with high expression of “adaptive immune-related gene signatures and a fully inflamed spatial pattern appearing to be the optimal candidate for immune check-point inhibitors.” By contrast, Mr. Bareche and coauthors said that “most mesenchymal stem-like and luminal androgen receptor TNBC tumors had an immunosuppressive phenotype with high expression levels of stromal gene signatures.”
The findings include “novel evidence” of how TNBC tumors may become resistant to the effects of immune checkpoint inhibitors.
The results demonstrate that each TNBC subtype is associated with specific TME profiles, “setting the ground for a rationale tailoring of immunotherapy in TNBC patients,” the researchers noted. Mr. Bareche and associates cautioned, however, that “prospective validation of our findings is warranted before their clinical implementation.”
The study was supported by a grant from the Breast Cancer Research Foundation. The researchers had no conflicts of interest.
SOURCE: Bareche Y et al. J Natl Cancer Inst. 2019 Oct 29. doi: 10.1093/jnci/djz208.
Tumor microenvironment (TME) profiles could help tailor treatment for triple-negative breast cancer (TNBC), with the TME profile of the immunomodulatory subtype of TNBC making it the most susceptible to the effects of the immune checkpoint inhibitors.
“This study allowed us to gain more insight into the complex interactions between tumor cells and their microenvironment, in particular immune cells,” wrote a team of Belgian and Canadian researchers. Their report is in the Journal of the National Cancer Institute.
At least five molecular subtypes of TNBC have been identified but little was previously known about the heterogeneity of their surroundings, noted Yacine Bareche, MSc, of Institut Jules Bordet, Université Libre de Bruxelles, Brussels, and associates. They looked at a series of 1,512 TNBC samples from four large and publicly available transcriptomic and genomic datasets and their TME, which is made up of many cell types – fibroblasts, adipose, and immune-inflammatory cells – and blood and lymphatic vascular networks.
The researchers explained that each of the four TNBC subtypes identified so far have “distinct mutational profiles, genomic alterations, and biological processes” which were matched by differences in their surrounding environments.
For instance, the immunomodulatory subtype of TNBC was associated with high expression of “adaptive immune-related gene signatures and a fully inflamed spatial pattern appearing to be the optimal candidate for immune check-point inhibitors.” By contrast, Mr. Bareche and coauthors said that “most mesenchymal stem-like and luminal androgen receptor TNBC tumors had an immunosuppressive phenotype with high expression levels of stromal gene signatures.”
The findings include “novel evidence” of how TNBC tumors may become resistant to the effects of immune checkpoint inhibitors.
The results demonstrate that each TNBC subtype is associated with specific TME profiles, “setting the ground for a rationale tailoring of immunotherapy in TNBC patients,” the researchers noted. Mr. Bareche and associates cautioned, however, that “prospective validation of our findings is warranted before their clinical implementation.”
The study was supported by a grant from the Breast Cancer Research Foundation. The researchers had no conflicts of interest.
SOURCE: Bareche Y et al. J Natl Cancer Inst. 2019 Oct 29. doi: 10.1093/jnci/djz208.
FROM JOURNAL OF THE NATIONAL CANCER INSTITUTE
Cardiometabolic risk burden is high in under-50s with type 2 diabetes
BARCELONA – People diagnosed with type 2 diabetes when they are 18-39 years old have significantly higher cardiometabolic risk burden, compared with older people, according to the results of a large study from the United Kingdom presented at the annual meeting of the European Association for the Study of Diabetes.
Patients in that younger age group were found to have higher glycated hemoglobin (HbA1c) levels, along with higher levels of low-density lipoprotein cholesterol and higher body weight.
“We wanted to evaluate the population-level trend in the incidence of young-onset type 2 diabetes in the United Kingdom, compared with later-onset diabetes,” said senior study author Sanjoy Paul, PhD, the director of the Melbourne EpiCentre at the University of Melbourne at a press briefing during the meeting.
Other aims of the study were to compare temporal trends in the incidence of atherosclerotic cardiovascular disease in younger and older patients with type 2 diabetes, and to see how being “high risk” at diagnosis affected patients’ risk of ASCVD and subsequent risk of death.
High-risk status was defined as having at least two of the risk factors for ASCVD – smoking, high systolic blood pressure, high low-density lipoprotein cholesterol, or chronic kidney disease.
The investigators searched a nationally representative sample of primary care electronic medical records from The Health Improvement Network (THIN) database to find incident cases of type 2 diabetes that occurred between 2000 and 2017, with a total of 370,854 cases identified.
At diagnosis of type 2 diabetes, 8% of the sample (n = 29,678) was aged 18-39 years; 15% (n = 56,798), 40-49 years; 25% (n = 93,698), 50-59 years; 29% (n = 107,261), 60-69 years; and 23% (n = 83,419), 70-79 years. Follow-up was just more than 6 years.
Baseline HbA1c in the respective age groups was 8.6%, 8.4%, 8.1%, 7.8%, and 7.6%, with more than 55% of patients in the two youngest age groups having an HbA1c of 7.5% or higher, compared with 34%-47% in the three oldest age groups.
The percentage of patients with a high LDL cholesterol value (2.6 mmol/L or higher in those without ASCVD, and 1.8 or higher in those with ASCVD) was 71%, 75%, 74%, 69%, and 65%, from the youngest to oldest age groups. A respective 71%, 70%, 66%, 57%, and 44% of the patients had a body mass index of 35 kg/m2 or higher.
Few younger patients had ASCVD at diagnosis (2% of the 18-39 age group; 6% of the 40-49 group), with higher rates in the older age groups (13% of the 50-59 group; 23% of the 60-69 group; and 33% of the 70-79 group).
The percentage of patients considered to be at high risk of ASCVD at diagnosis was 23%, 37%, 45%, 50%, and 53%, respectively, across the five age groups.
Although high systolic blood pressure (SBP; 130 mmHg in those with ASCVD, 140 mmHg in those without) was more common in the older age groups (52% at 50-59 years; 60% at 60-69 years, and 64% at 70-79 years,) a substantial proportion of the younger patients also had a high SBP (27% at 18-39 years and 41% at 40-49 years).
Digsu Koye, PhD, also of the Melbourne EpiCentre, presented the main findings of the study during the meeting, noting that the proportion of people diagnosed when they were younger than 50 years remained stable between 2000 and 2017, with a marginal increase in those diagnosed when they were aged 50-59 years, and a decline in those diagnosed when they were older than 70 years.
In the youngest and oldest age groups, equal numbers of men and women were diagnosed with type 2 diabetes, and more women than men were diagnosed in the 60-69 age group, Dr. Koye said. However, for the 40-49 and 50-59 age groups, there were more men than women diagnosed with type 2 diabetes.
Patients were followed for an average of just more than 6 years. “The rate of atherosclerotic cardiovascular disease was declining in all age categories during 2000-2006, but after that, we saw a stable and consistent pattern for all age categories after 2007,” Dr. Koye observed.
In regard to all-cause mortality, there was a 30% decline in the oldest age group (70-79 years), and a 20% decline in the 60-69 age group, but there was no significant decline in the younger age groups, he added.
The investigators determined the average time to event (ASCVD or all-cause mortality) by high-risk status at type 2 diabetes diagnosis for each age group. These analyses showed that there was little difference between the high- and low-risk groups for the average time to ASCVD or all-cause mortality in the youngest age group, with wider differences in the older patients of 1-2 years for ASCVD and 0.5-2 years for all-cause mortality.
Dr. Koye noted that people with young-onset type 2 diabetes had a risk of ASCVD or all-cause mortality that was similar to that of older people, irrespective of whether or not they were considered to be at high or low risk of events. “So we need a more focused treatment strategy for the youngest age group, irrespective of the cardiometabolic risk level at diagnosis,” he said.
Dr. Paul and Dr. Koye reported having no conflicts of interest.
SOURCE: Koye D et al. EASD 2019, Abstract 82.
BARCELONA – People diagnosed with type 2 diabetes when they are 18-39 years old have significantly higher cardiometabolic risk burden, compared with older people, according to the results of a large study from the United Kingdom presented at the annual meeting of the European Association for the Study of Diabetes.
Patients in that younger age group were found to have higher glycated hemoglobin (HbA1c) levels, along with higher levels of low-density lipoprotein cholesterol and higher body weight.
“We wanted to evaluate the population-level trend in the incidence of young-onset type 2 diabetes in the United Kingdom, compared with later-onset diabetes,” said senior study author Sanjoy Paul, PhD, the director of the Melbourne EpiCentre at the University of Melbourne at a press briefing during the meeting.
Other aims of the study were to compare temporal trends in the incidence of atherosclerotic cardiovascular disease in younger and older patients with type 2 diabetes, and to see how being “high risk” at diagnosis affected patients’ risk of ASCVD and subsequent risk of death.
High-risk status was defined as having at least two of the risk factors for ASCVD – smoking, high systolic blood pressure, high low-density lipoprotein cholesterol, or chronic kidney disease.
The investigators searched a nationally representative sample of primary care electronic medical records from The Health Improvement Network (THIN) database to find incident cases of type 2 diabetes that occurred between 2000 and 2017, with a total of 370,854 cases identified.
At diagnosis of type 2 diabetes, 8% of the sample (n = 29,678) was aged 18-39 years; 15% (n = 56,798), 40-49 years; 25% (n = 93,698), 50-59 years; 29% (n = 107,261), 60-69 years; and 23% (n = 83,419), 70-79 years. Follow-up was just more than 6 years.
Baseline HbA1c in the respective age groups was 8.6%, 8.4%, 8.1%, 7.8%, and 7.6%, with more than 55% of patients in the two youngest age groups having an HbA1c of 7.5% or higher, compared with 34%-47% in the three oldest age groups.
The percentage of patients with a high LDL cholesterol value (2.6 mmol/L or higher in those without ASCVD, and 1.8 or higher in those with ASCVD) was 71%, 75%, 74%, 69%, and 65%, from the youngest to oldest age groups. A respective 71%, 70%, 66%, 57%, and 44% of the patients had a body mass index of 35 kg/m2 or higher.
Few younger patients had ASCVD at diagnosis (2% of the 18-39 age group; 6% of the 40-49 group), with higher rates in the older age groups (13% of the 50-59 group; 23% of the 60-69 group; and 33% of the 70-79 group).
The percentage of patients considered to be at high risk of ASCVD at diagnosis was 23%, 37%, 45%, 50%, and 53%, respectively, across the five age groups.
Although high systolic blood pressure (SBP; 130 mmHg in those with ASCVD, 140 mmHg in those without) was more common in the older age groups (52% at 50-59 years; 60% at 60-69 years, and 64% at 70-79 years,) a substantial proportion of the younger patients also had a high SBP (27% at 18-39 years and 41% at 40-49 years).
Digsu Koye, PhD, also of the Melbourne EpiCentre, presented the main findings of the study during the meeting, noting that the proportion of people diagnosed when they were younger than 50 years remained stable between 2000 and 2017, with a marginal increase in those diagnosed when they were aged 50-59 years, and a decline in those diagnosed when they were older than 70 years.
In the youngest and oldest age groups, equal numbers of men and women were diagnosed with type 2 diabetes, and more women than men were diagnosed in the 60-69 age group, Dr. Koye said. However, for the 40-49 and 50-59 age groups, there were more men than women diagnosed with type 2 diabetes.
Patients were followed for an average of just more than 6 years. “The rate of atherosclerotic cardiovascular disease was declining in all age categories during 2000-2006, but after that, we saw a stable and consistent pattern for all age categories after 2007,” Dr. Koye observed.
In regard to all-cause mortality, there was a 30% decline in the oldest age group (70-79 years), and a 20% decline in the 60-69 age group, but there was no significant decline in the younger age groups, he added.
The investigators determined the average time to event (ASCVD or all-cause mortality) by high-risk status at type 2 diabetes diagnosis for each age group. These analyses showed that there was little difference between the high- and low-risk groups for the average time to ASCVD or all-cause mortality in the youngest age group, with wider differences in the older patients of 1-2 years for ASCVD and 0.5-2 years for all-cause mortality.
Dr. Koye noted that people with young-onset type 2 diabetes had a risk of ASCVD or all-cause mortality that was similar to that of older people, irrespective of whether or not they were considered to be at high or low risk of events. “So we need a more focused treatment strategy for the youngest age group, irrespective of the cardiometabolic risk level at diagnosis,” he said.
Dr. Paul and Dr. Koye reported having no conflicts of interest.
SOURCE: Koye D et al. EASD 2019, Abstract 82.
BARCELONA – People diagnosed with type 2 diabetes when they are 18-39 years old have significantly higher cardiometabolic risk burden, compared with older people, according to the results of a large study from the United Kingdom presented at the annual meeting of the European Association for the Study of Diabetes.
Patients in that younger age group were found to have higher glycated hemoglobin (HbA1c) levels, along with higher levels of low-density lipoprotein cholesterol and higher body weight.
“We wanted to evaluate the population-level trend in the incidence of young-onset type 2 diabetes in the United Kingdom, compared with later-onset diabetes,” said senior study author Sanjoy Paul, PhD, the director of the Melbourne EpiCentre at the University of Melbourne at a press briefing during the meeting.
Other aims of the study were to compare temporal trends in the incidence of atherosclerotic cardiovascular disease in younger and older patients with type 2 diabetes, and to see how being “high risk” at diagnosis affected patients’ risk of ASCVD and subsequent risk of death.
High-risk status was defined as having at least two of the risk factors for ASCVD – smoking, high systolic blood pressure, high low-density lipoprotein cholesterol, or chronic kidney disease.
The investigators searched a nationally representative sample of primary care electronic medical records from The Health Improvement Network (THIN) database to find incident cases of type 2 diabetes that occurred between 2000 and 2017, with a total of 370,854 cases identified.
At diagnosis of type 2 diabetes, 8% of the sample (n = 29,678) was aged 18-39 years; 15% (n = 56,798), 40-49 years; 25% (n = 93,698), 50-59 years; 29% (n = 107,261), 60-69 years; and 23% (n = 83,419), 70-79 years. Follow-up was just more than 6 years.
Baseline HbA1c in the respective age groups was 8.6%, 8.4%, 8.1%, 7.8%, and 7.6%, with more than 55% of patients in the two youngest age groups having an HbA1c of 7.5% or higher, compared with 34%-47% in the three oldest age groups.
The percentage of patients with a high LDL cholesterol value (2.6 mmol/L or higher in those without ASCVD, and 1.8 or higher in those with ASCVD) was 71%, 75%, 74%, 69%, and 65%, from the youngest to oldest age groups. A respective 71%, 70%, 66%, 57%, and 44% of the patients had a body mass index of 35 kg/m2 or higher.
Few younger patients had ASCVD at diagnosis (2% of the 18-39 age group; 6% of the 40-49 group), with higher rates in the older age groups (13% of the 50-59 group; 23% of the 60-69 group; and 33% of the 70-79 group).
The percentage of patients considered to be at high risk of ASCVD at diagnosis was 23%, 37%, 45%, 50%, and 53%, respectively, across the five age groups.
Although high systolic blood pressure (SBP; 130 mmHg in those with ASCVD, 140 mmHg in those without) was more common in the older age groups (52% at 50-59 years; 60% at 60-69 years, and 64% at 70-79 years,) a substantial proportion of the younger patients also had a high SBP (27% at 18-39 years and 41% at 40-49 years).
Digsu Koye, PhD, also of the Melbourne EpiCentre, presented the main findings of the study during the meeting, noting that the proportion of people diagnosed when they were younger than 50 years remained stable between 2000 and 2017, with a marginal increase in those diagnosed when they were aged 50-59 years, and a decline in those diagnosed when they were older than 70 years.
In the youngest and oldest age groups, equal numbers of men and women were diagnosed with type 2 diabetes, and more women than men were diagnosed in the 60-69 age group, Dr. Koye said. However, for the 40-49 and 50-59 age groups, there were more men than women diagnosed with type 2 diabetes.
Patients were followed for an average of just more than 6 years. “The rate of atherosclerotic cardiovascular disease was declining in all age categories during 2000-2006, but after that, we saw a stable and consistent pattern for all age categories after 2007,” Dr. Koye observed.
In regard to all-cause mortality, there was a 30% decline in the oldest age group (70-79 years), and a 20% decline in the 60-69 age group, but there was no significant decline in the younger age groups, he added.
The investigators determined the average time to event (ASCVD or all-cause mortality) by high-risk status at type 2 diabetes diagnosis for each age group. These analyses showed that there was little difference between the high- and low-risk groups for the average time to ASCVD or all-cause mortality in the youngest age group, with wider differences in the older patients of 1-2 years for ASCVD and 0.5-2 years for all-cause mortality.
Dr. Koye noted that people with young-onset type 2 diabetes had a risk of ASCVD or all-cause mortality that was similar to that of older people, irrespective of whether or not they were considered to be at high or low risk of events. “So we need a more focused treatment strategy for the youngest age group, irrespective of the cardiometabolic risk level at diagnosis,” he said.
Dr. Paul and Dr. Koye reported having no conflicts of interest.
SOURCE: Koye D et al. EASD 2019, Abstract 82.
REPORTING FROM EASD 2019
Ketoacidosis is on the rise in children with type 1 diabetes
BARCELONA – As many as 40%-60% of children have diabetic ketoacidosis (DKA) at the time of being diagnosed with type 1 diabetes, according to data from two U.S. analyses – and the figures have been rising for the past 10 years.
Between 2010 and 2017, the prevalence of DKA at diagnosis in children who were followed up at the Barbara Davies Cancer Center in Denver (n = 2,429) went from 41% to 59%, with a 7% annual rise, Arleta Rewers, MD, PhD, of Children’s Hospital Colorado, Denver, reported at the annual meeting of the European Association for the Study of Diabetes.
Meanwhile, in another analysis that included multiple U.S. centers and about 7,600 cases of youth-onset type 1 diabetes, the overall prevalence of DKA at diagnosis was 38.5% between 2010 and 2016. However, the prevalence had increased from 35% in 2010 to 40.6% in 2016, according to Elizabeth T. Jensen, MPH, PhD, of Wake Forest University, Winston-Salem, N.C. The annual increase in prevalence of DKA at diagnosis of type 1 disease was 2%, adjusted for sociodemographic factors.
Rising prevalence
“DKA occurs most commonly at the time of type 1 diabetes diagnosis,” observed Dr. Jensen, who noted that “in the United States, among children, it’s younger children, uninsured or underinsured children, and children from minority racial or ethnic groups, who are at greatest risk.”
Dr. Jensen and colleagues had previously shown that the prevalence of DKA at diagnosis was around 30% between 2002 and 2010, with no significant change in its prevalence. However, more recent reports from referral-based, single-center studies had suggested there was an increase, and that led her and her colleagues to take a closer look at the data.
To characterize the risk factors for DKA and the prevalence of DKA over time, Dr. Jensen and her team used the SEARCH for Diabetes in Youth database, which, she said, was “uniquely suited” for this purpose. SEARCH is a population-based, multicenter study conducted in centers in five U.S. states: South Carolina, Ohio, Colorado, California, and Washington.
A diagnosis of DKA was based on blood bicarbonate levels of less than 15 mmol/L, a venous pH of less than 7.25 or arterial or capillary pH of less than 7.3, or if there was any documentation of a DKA diagnosis.
As expected, the prevalence of DKA was highest in the youngest age group (0-4 years), Dr. Jensen said, but the increase in prevalence in that group was no different from the increases seen over time in the other age groups (5-9 years, 10-14 years, and 15 years or older).
There were no differences in the prevalence of DKA between the sexes, although there was a general increase over time. Similar trends were seen in DKA prevalence by race or ethnicity and by season, or time of year.
Of note, higher rates of DKA were seen in children who were covered by public health insurance, than in those covered by private insurance, although there was no difference in the rate of increase in DKA prevalence between the two groups. Dr. Jensen noted that only 64% of this study population had private insurance.
She said that future research in this area would need to look at the economic drivers and the “changing landscape of health insurance coverage in the United States.”
Expansion in health coverage
In presenting the findings of a study showing an increase in the prevalence of DKA at diagnosis of type 1 diabetes in children in Colorado from 2010 to 2017, Dr. Rewers said that the increase “paradoxically occurred” at a time of increasing health insurance coverage, a reference to the expansion of Medicaid during 2008-2012 and implementation in 2013 of the Affordable Care Act.
“Our group in Colorado has followed the frequency of DKA for almost 2 decades,” Dr. Rewers said. It’s important to study DKA as it is linked to worse glycemic control – with children with DKA having an HbA1c level of around 1% higher than those without DKA – and the potential for future, long-term complications.
Dr. Rewers noted that the increase in DKA at diagnosis of type 1 diabetes was more rapid in the children who had private rather than public health insurance. Of 1,187 patients with DKA, 57% had private health insurance, and 37% had public insurance, compared with 66% and 28%, respectively, in those without DKA. In 2010, the prevalence of DKA at diagnosis was 35.3% in those who were privately insured and 52.2% of those with public health insurance, but by 2017, a similar percentage of DKA was seen in the privately and publicly insured children (59.6% and 58.5%, respectively).
She said one possible explanation for that might be that “increased enrollment in high-deductible insurance plans could discourage families with private insurance from seeking timely care.”
Another explanation is that there is a low awareness of type 1 diabetes in the general population, she added. “Educational campaigns and autoimmunity screening have been shown to reduce DKA at diabetes diagnosis, but unfortunately they are not used widely at this point.”
Identifying at-risk children
“Diabetic ketoacidosis is a serious complication of diabetes [and] is difficult to diagnose because of the variability of the symptoms, said Angela Ibald-Mulli, PhD, who presented the findings of a retrospective cohort study in which she and her colleagues used a “discovery algorithm” called Q-Finder to identify the predictive factors for DKA in youth with type 1 diabetes, based on data from the Diabetes Prospective Follow-up Registry (DPV).
“The better we know the risk factors, the better we can care for our patients,” she emphasized.
The investigators obtained data on 108,223 patients with a diagnosis of type 1 disease and with more than two visits related to diabetes. The prevalence of DKA – defined as a pH of less than 7.3 during hospitalization occurring at least 10 days after the onset of type 1 diabetes – was 5.2%, said Dr. Ibald-Mulli, head of Medical Evidence Generation Primary Care at Sanofi, Paris.
A total of 129 different features were considered for their association with DKA – including comorbidities, sociodemographic factors, laboratory values, and concomitant medications – and were then used to identify, test, and the validate likely risk profiles.
After comparing the characteristics of patients with and without DKA, eight significant factors, all of which have been reported previously in the DPV cohort, were seen: younger age, lower body weight, higher HbA1c, younger age at onset of T1D; shorter disease duration; having a migration background; being less active; and having had more medical visits.
The investigators used the algorithm, and found 11 distinct profiles associated with DKA: an HbA1c higher than 8.87%; being aged 6-10 years; being aged 11-15 years; a diagnosis of nephropathy; DKA being present at onset; a prevalence of hypoglycemia with coma; a diagnosis of thyroiditis; a standardized body mass index lower than 16.9; not using short-acting insulin; younger than age 15 years; and not using continuous glucose monitoring.
Almost two-thirds of patients (64.7%) belonged to at least one of these risk profiles, Dr. Ibald-Mulli observed, with 7.1% of them having DKA, compared with 1.6% who belonged to none of the profiles.
Dr. Ibald-Mulli said it was important to note that the DKA risk profiles could overlap. “The more profiles a patient belongs to, the higher is the risk of having DKA,” she emphasized, adding that most patients (88.8%) with DKA belonged to just one profile, and fewer than 5% belonged to three or more profiles.
“Overall, the results of the algorithm confirmed known risk-factor profiles that had been previously identified by conventional statistical methods,” she concluded. It also provided “additional insights that can be further explored.”
SEARCH is funded by the Centers for Disease and Prevention and the National Institute of Diabetes and Digestive and Kidney Diseases. The DPV Registry is funded by multiple sponsors, including the European Federation for the Study of Diabetes and other academic institutions with the support of several commercial partners. Sanofi sponsored the study presented by Dr. Ibald-Mulli. Dr. Rewers made no disclosures, and Dr. Jensen did not have any conflicts of interest to declare. Dr. Ibald-Mulli is an employee of Sanofi.
SOURCE: Rewers A et al. EASD 2019, Abstract 115; Jensen E et al. EASD 2019, Abstract 116; Ibald-Mulli A et al. EASD 2019, Abstract 117.
BARCELONA – As many as 40%-60% of children have diabetic ketoacidosis (DKA) at the time of being diagnosed with type 1 diabetes, according to data from two U.S. analyses – and the figures have been rising for the past 10 years.
Between 2010 and 2017, the prevalence of DKA at diagnosis in children who were followed up at the Barbara Davies Cancer Center in Denver (n = 2,429) went from 41% to 59%, with a 7% annual rise, Arleta Rewers, MD, PhD, of Children’s Hospital Colorado, Denver, reported at the annual meeting of the European Association for the Study of Diabetes.
Meanwhile, in another analysis that included multiple U.S. centers and about 7,600 cases of youth-onset type 1 diabetes, the overall prevalence of DKA at diagnosis was 38.5% between 2010 and 2016. However, the prevalence had increased from 35% in 2010 to 40.6% in 2016, according to Elizabeth T. Jensen, MPH, PhD, of Wake Forest University, Winston-Salem, N.C. The annual increase in prevalence of DKA at diagnosis of type 1 disease was 2%, adjusted for sociodemographic factors.
Rising prevalence
“DKA occurs most commonly at the time of type 1 diabetes diagnosis,” observed Dr. Jensen, who noted that “in the United States, among children, it’s younger children, uninsured or underinsured children, and children from minority racial or ethnic groups, who are at greatest risk.”
Dr. Jensen and colleagues had previously shown that the prevalence of DKA at diagnosis was around 30% between 2002 and 2010, with no significant change in its prevalence. However, more recent reports from referral-based, single-center studies had suggested there was an increase, and that led her and her colleagues to take a closer look at the data.
To characterize the risk factors for DKA and the prevalence of DKA over time, Dr. Jensen and her team used the SEARCH for Diabetes in Youth database, which, she said, was “uniquely suited” for this purpose. SEARCH is a population-based, multicenter study conducted in centers in five U.S. states: South Carolina, Ohio, Colorado, California, and Washington.
A diagnosis of DKA was based on blood bicarbonate levels of less than 15 mmol/L, a venous pH of less than 7.25 or arterial or capillary pH of less than 7.3, or if there was any documentation of a DKA diagnosis.
As expected, the prevalence of DKA was highest in the youngest age group (0-4 years), Dr. Jensen said, but the increase in prevalence in that group was no different from the increases seen over time in the other age groups (5-9 years, 10-14 years, and 15 years or older).
There were no differences in the prevalence of DKA between the sexes, although there was a general increase over time. Similar trends were seen in DKA prevalence by race or ethnicity and by season, or time of year.
Of note, higher rates of DKA were seen in children who were covered by public health insurance, than in those covered by private insurance, although there was no difference in the rate of increase in DKA prevalence between the two groups. Dr. Jensen noted that only 64% of this study population had private insurance.
She said that future research in this area would need to look at the economic drivers and the “changing landscape of health insurance coverage in the United States.”
Expansion in health coverage
In presenting the findings of a study showing an increase in the prevalence of DKA at diagnosis of type 1 diabetes in children in Colorado from 2010 to 2017, Dr. Rewers said that the increase “paradoxically occurred” at a time of increasing health insurance coverage, a reference to the expansion of Medicaid during 2008-2012 and implementation in 2013 of the Affordable Care Act.
“Our group in Colorado has followed the frequency of DKA for almost 2 decades,” Dr. Rewers said. It’s important to study DKA as it is linked to worse glycemic control – with children with DKA having an HbA1c level of around 1% higher than those without DKA – and the potential for future, long-term complications.
Dr. Rewers noted that the increase in DKA at diagnosis of type 1 diabetes was more rapid in the children who had private rather than public health insurance. Of 1,187 patients with DKA, 57% had private health insurance, and 37% had public insurance, compared with 66% and 28%, respectively, in those without DKA. In 2010, the prevalence of DKA at diagnosis was 35.3% in those who were privately insured and 52.2% of those with public health insurance, but by 2017, a similar percentage of DKA was seen in the privately and publicly insured children (59.6% and 58.5%, respectively).
She said one possible explanation for that might be that “increased enrollment in high-deductible insurance plans could discourage families with private insurance from seeking timely care.”
Another explanation is that there is a low awareness of type 1 diabetes in the general population, she added. “Educational campaigns and autoimmunity screening have been shown to reduce DKA at diabetes diagnosis, but unfortunately they are not used widely at this point.”
Identifying at-risk children
“Diabetic ketoacidosis is a serious complication of diabetes [and] is difficult to diagnose because of the variability of the symptoms, said Angela Ibald-Mulli, PhD, who presented the findings of a retrospective cohort study in which she and her colleagues used a “discovery algorithm” called Q-Finder to identify the predictive factors for DKA in youth with type 1 diabetes, based on data from the Diabetes Prospective Follow-up Registry (DPV).
“The better we know the risk factors, the better we can care for our patients,” she emphasized.
The investigators obtained data on 108,223 patients with a diagnosis of type 1 disease and with more than two visits related to diabetes. The prevalence of DKA – defined as a pH of less than 7.3 during hospitalization occurring at least 10 days after the onset of type 1 diabetes – was 5.2%, said Dr. Ibald-Mulli, head of Medical Evidence Generation Primary Care at Sanofi, Paris.
A total of 129 different features were considered for their association with DKA – including comorbidities, sociodemographic factors, laboratory values, and concomitant medications – and were then used to identify, test, and the validate likely risk profiles.
After comparing the characteristics of patients with and without DKA, eight significant factors, all of which have been reported previously in the DPV cohort, were seen: younger age, lower body weight, higher HbA1c, younger age at onset of T1D; shorter disease duration; having a migration background; being less active; and having had more medical visits.
The investigators used the algorithm, and found 11 distinct profiles associated with DKA: an HbA1c higher than 8.87%; being aged 6-10 years; being aged 11-15 years; a diagnosis of nephropathy; DKA being present at onset; a prevalence of hypoglycemia with coma; a diagnosis of thyroiditis; a standardized body mass index lower than 16.9; not using short-acting insulin; younger than age 15 years; and not using continuous glucose monitoring.
Almost two-thirds of patients (64.7%) belonged to at least one of these risk profiles, Dr. Ibald-Mulli observed, with 7.1% of them having DKA, compared with 1.6% who belonged to none of the profiles.
Dr. Ibald-Mulli said it was important to note that the DKA risk profiles could overlap. “The more profiles a patient belongs to, the higher is the risk of having DKA,” she emphasized, adding that most patients (88.8%) with DKA belonged to just one profile, and fewer than 5% belonged to three or more profiles.
“Overall, the results of the algorithm confirmed known risk-factor profiles that had been previously identified by conventional statistical methods,” she concluded. It also provided “additional insights that can be further explored.”
SEARCH is funded by the Centers for Disease and Prevention and the National Institute of Diabetes and Digestive and Kidney Diseases. The DPV Registry is funded by multiple sponsors, including the European Federation for the Study of Diabetes and other academic institutions with the support of several commercial partners. Sanofi sponsored the study presented by Dr. Ibald-Mulli. Dr. Rewers made no disclosures, and Dr. Jensen did not have any conflicts of interest to declare. Dr. Ibald-Mulli is an employee of Sanofi.
SOURCE: Rewers A et al. EASD 2019, Abstract 115; Jensen E et al. EASD 2019, Abstract 116; Ibald-Mulli A et al. EASD 2019, Abstract 117.
BARCELONA – As many as 40%-60% of children have diabetic ketoacidosis (DKA) at the time of being diagnosed with type 1 diabetes, according to data from two U.S. analyses – and the figures have been rising for the past 10 years.
Between 2010 and 2017, the prevalence of DKA at diagnosis in children who were followed up at the Barbara Davies Cancer Center in Denver (n = 2,429) went from 41% to 59%, with a 7% annual rise, Arleta Rewers, MD, PhD, of Children’s Hospital Colorado, Denver, reported at the annual meeting of the European Association for the Study of Diabetes.
Meanwhile, in another analysis that included multiple U.S. centers and about 7,600 cases of youth-onset type 1 diabetes, the overall prevalence of DKA at diagnosis was 38.5% between 2010 and 2016. However, the prevalence had increased from 35% in 2010 to 40.6% in 2016, according to Elizabeth T. Jensen, MPH, PhD, of Wake Forest University, Winston-Salem, N.C. The annual increase in prevalence of DKA at diagnosis of type 1 disease was 2%, adjusted for sociodemographic factors.
Rising prevalence
“DKA occurs most commonly at the time of type 1 diabetes diagnosis,” observed Dr. Jensen, who noted that “in the United States, among children, it’s younger children, uninsured or underinsured children, and children from minority racial or ethnic groups, who are at greatest risk.”
Dr. Jensen and colleagues had previously shown that the prevalence of DKA at diagnosis was around 30% between 2002 and 2010, with no significant change in its prevalence. However, more recent reports from referral-based, single-center studies had suggested there was an increase, and that led her and her colleagues to take a closer look at the data.
To characterize the risk factors for DKA and the prevalence of DKA over time, Dr. Jensen and her team used the SEARCH for Diabetes in Youth database, which, she said, was “uniquely suited” for this purpose. SEARCH is a population-based, multicenter study conducted in centers in five U.S. states: South Carolina, Ohio, Colorado, California, and Washington.
A diagnosis of DKA was based on blood bicarbonate levels of less than 15 mmol/L, a venous pH of less than 7.25 or arterial or capillary pH of less than 7.3, or if there was any documentation of a DKA diagnosis.
As expected, the prevalence of DKA was highest in the youngest age group (0-4 years), Dr. Jensen said, but the increase in prevalence in that group was no different from the increases seen over time in the other age groups (5-9 years, 10-14 years, and 15 years or older).
There were no differences in the prevalence of DKA between the sexes, although there was a general increase over time. Similar trends were seen in DKA prevalence by race or ethnicity and by season, or time of year.
Of note, higher rates of DKA were seen in children who were covered by public health insurance, than in those covered by private insurance, although there was no difference in the rate of increase in DKA prevalence between the two groups. Dr. Jensen noted that only 64% of this study population had private insurance.
She said that future research in this area would need to look at the economic drivers and the “changing landscape of health insurance coverage in the United States.”
Expansion in health coverage
In presenting the findings of a study showing an increase in the prevalence of DKA at diagnosis of type 1 diabetes in children in Colorado from 2010 to 2017, Dr. Rewers said that the increase “paradoxically occurred” at a time of increasing health insurance coverage, a reference to the expansion of Medicaid during 2008-2012 and implementation in 2013 of the Affordable Care Act.
“Our group in Colorado has followed the frequency of DKA for almost 2 decades,” Dr. Rewers said. It’s important to study DKA as it is linked to worse glycemic control – with children with DKA having an HbA1c level of around 1% higher than those without DKA – and the potential for future, long-term complications.
Dr. Rewers noted that the increase in DKA at diagnosis of type 1 diabetes was more rapid in the children who had private rather than public health insurance. Of 1,187 patients with DKA, 57% had private health insurance, and 37% had public insurance, compared with 66% and 28%, respectively, in those without DKA. In 2010, the prevalence of DKA at diagnosis was 35.3% in those who were privately insured and 52.2% of those with public health insurance, but by 2017, a similar percentage of DKA was seen in the privately and publicly insured children (59.6% and 58.5%, respectively).
She said one possible explanation for that might be that “increased enrollment in high-deductible insurance plans could discourage families with private insurance from seeking timely care.”
Another explanation is that there is a low awareness of type 1 diabetes in the general population, she added. “Educational campaigns and autoimmunity screening have been shown to reduce DKA at diabetes diagnosis, but unfortunately they are not used widely at this point.”
Identifying at-risk children
“Diabetic ketoacidosis is a serious complication of diabetes [and] is difficult to diagnose because of the variability of the symptoms, said Angela Ibald-Mulli, PhD, who presented the findings of a retrospective cohort study in which she and her colleagues used a “discovery algorithm” called Q-Finder to identify the predictive factors for DKA in youth with type 1 diabetes, based on data from the Diabetes Prospective Follow-up Registry (DPV).
“The better we know the risk factors, the better we can care for our patients,” she emphasized.
The investigators obtained data on 108,223 patients with a diagnosis of type 1 disease and with more than two visits related to diabetes. The prevalence of DKA – defined as a pH of less than 7.3 during hospitalization occurring at least 10 days after the onset of type 1 diabetes – was 5.2%, said Dr. Ibald-Mulli, head of Medical Evidence Generation Primary Care at Sanofi, Paris.
A total of 129 different features were considered for their association with DKA – including comorbidities, sociodemographic factors, laboratory values, and concomitant medications – and were then used to identify, test, and the validate likely risk profiles.
After comparing the characteristics of patients with and without DKA, eight significant factors, all of which have been reported previously in the DPV cohort, were seen: younger age, lower body weight, higher HbA1c, younger age at onset of T1D; shorter disease duration; having a migration background; being less active; and having had more medical visits.
The investigators used the algorithm, and found 11 distinct profiles associated with DKA: an HbA1c higher than 8.87%; being aged 6-10 years; being aged 11-15 years; a diagnosis of nephropathy; DKA being present at onset; a prevalence of hypoglycemia with coma; a diagnosis of thyroiditis; a standardized body mass index lower than 16.9; not using short-acting insulin; younger than age 15 years; and not using continuous glucose monitoring.
Almost two-thirds of patients (64.7%) belonged to at least one of these risk profiles, Dr. Ibald-Mulli observed, with 7.1% of them having DKA, compared with 1.6% who belonged to none of the profiles.
Dr. Ibald-Mulli said it was important to note that the DKA risk profiles could overlap. “The more profiles a patient belongs to, the higher is the risk of having DKA,” she emphasized, adding that most patients (88.8%) with DKA belonged to just one profile, and fewer than 5% belonged to three or more profiles.
“Overall, the results of the algorithm confirmed known risk-factor profiles that had been previously identified by conventional statistical methods,” she concluded. It also provided “additional insights that can be further explored.”
SEARCH is funded by the Centers for Disease and Prevention and the National Institute of Diabetes and Digestive and Kidney Diseases. The DPV Registry is funded by multiple sponsors, including the European Federation for the Study of Diabetes and other academic institutions with the support of several commercial partners. Sanofi sponsored the study presented by Dr. Ibald-Mulli. Dr. Rewers made no disclosures, and Dr. Jensen did not have any conflicts of interest to declare. Dr. Ibald-Mulli is an employee of Sanofi.
SOURCE: Rewers A et al. EASD 2019, Abstract 115; Jensen E et al. EASD 2019, Abstract 116; Ibald-Mulli A et al. EASD 2019, Abstract 117.
REPORTING FROM EASD 2019
Signs of adult diabetes apparent in very young children
BARCELONA – Disturbed HDL cholesterol metabolism is one of the earliest features that may predispose individuals to the development of type 2 diabetes, according to data from a genetics and metabolomics study conducted in the United Kingdom.
Changes in HDL cholesterol metabolism were seen in children as young as 8 years, decades before the clinical onset of disease, Joshua Bell, PhD, a research fellow at the University of Bristol (England), reported at the annual meeting of the European Association for the Study of Diabetes.
“We know that type 2 diabetes certainly doesn’t develop overnight,” Dr. Bell said. Indeed, data exist showing that there are changes in glucose metabolism several years before a formal diagnosis may be made in adults. “What we don’t know is what the very earliest features of diabetes look like,” he added.
“The main assumption is that type 2 diabetes is a metabolic disease, and so disease features are visible in systemic metabolism,” explained Dr. Bell. What was not clear, however, was that if any metabolic features – seen mainly in observational studies and in adults – were caused by the disease itself or perhaps were independent causes of type 2 diabetes.To investigate, Dr. Bell and associates performed a study linking genetic liability with metabolomic data collected at four time points from 4,761 offspring from participants in the Avon Longitudinal Study of Parents and Children cohort, which is also known as the Children of the 90s cohort. More than 200 metabolic traits were considered, and a genetic risk score comprising more than 162 single nucleotide polymorphisms previously linked to adult type 2 diabetes was used.
The metabolomic traits considered included lipoprotein subclass-specific cholesterol and triglyceride content, amino and fatty acids, and inflammatory glycoprotein acetyls, which had been measured in childhood at the age of 8 years, in adolescence at 16 years, in young adulthood at 18 years, and in adulthood at 25 years.
Early metabolic features of type 2 diabetes liability were grouped together and one feature that stood out was the sizes of lipid particles. In particular, it was the size of HDL cholesterol particle subtypes in children at the age of 8 years. Before other types of changes in lipid particles were being seen, there were reductions in the lipid content of HDL cholesterol particle subtypes, notably those that were very large.
By age 16 years, strong associations remained with lower lipids in HDL cholesterol particle subtypes and type 2 diabetes liability, which became stronger with preglycemic traits, such as citrate, and with glycoprotein acetyls. By age 18 years, elevations were seen in branched amino acids, and by age 25, association had strengthened for the lipid content of very low–density lipoprotein cholesterol.
“Linking genetic liability to adult disease with traits measured much earlier in life can tell you something about how the disease activity unfolds over a lifetime,” Dr. Bell said, adding that the feature that was “most consistently tracked” could be evaluated and could help reveal whether or not an individual might go on to develop type 2 diabetes.
In a press release issued by the EASD, Dr. Bell observed: “It’s remarkable that we can see signs of adult diabetes in the blood from such a young age. Knowing what early features of type 2 diabetes look like, could help us to intervene much earlier to halt progression to full-blown diabetes and its complications.”
The study was funded by Diabetes U.K., Cancer Research U.K., the Elizabeth Blackwell Institute for Health Research, the Wellcome Trust, the Medical Research Council, and the University of Bristol. Dr. Bell said he had no conflicts of interest to declare.
SOURCE: Bell J et al. bioRxiv. 2019 Sep 17. doi: 10.1101/767756.
BARCELONA – Disturbed HDL cholesterol metabolism is one of the earliest features that may predispose individuals to the development of type 2 diabetes, according to data from a genetics and metabolomics study conducted in the United Kingdom.
Changes in HDL cholesterol metabolism were seen in children as young as 8 years, decades before the clinical onset of disease, Joshua Bell, PhD, a research fellow at the University of Bristol (England), reported at the annual meeting of the European Association for the Study of Diabetes.
“We know that type 2 diabetes certainly doesn’t develop overnight,” Dr. Bell said. Indeed, data exist showing that there are changes in glucose metabolism several years before a formal diagnosis may be made in adults. “What we don’t know is what the very earliest features of diabetes look like,” he added.
“The main assumption is that type 2 diabetes is a metabolic disease, and so disease features are visible in systemic metabolism,” explained Dr. Bell. What was not clear, however, was that if any metabolic features – seen mainly in observational studies and in adults – were caused by the disease itself or perhaps were independent causes of type 2 diabetes.To investigate, Dr. Bell and associates performed a study linking genetic liability with metabolomic data collected at four time points from 4,761 offspring from participants in the Avon Longitudinal Study of Parents and Children cohort, which is also known as the Children of the 90s cohort. More than 200 metabolic traits were considered, and a genetic risk score comprising more than 162 single nucleotide polymorphisms previously linked to adult type 2 diabetes was used.
The metabolomic traits considered included lipoprotein subclass-specific cholesterol and triglyceride content, amino and fatty acids, and inflammatory glycoprotein acetyls, which had been measured in childhood at the age of 8 years, in adolescence at 16 years, in young adulthood at 18 years, and in adulthood at 25 years.
Early metabolic features of type 2 diabetes liability were grouped together and one feature that stood out was the sizes of lipid particles. In particular, it was the size of HDL cholesterol particle subtypes in children at the age of 8 years. Before other types of changes in lipid particles were being seen, there were reductions in the lipid content of HDL cholesterol particle subtypes, notably those that were very large.
By age 16 years, strong associations remained with lower lipids in HDL cholesterol particle subtypes and type 2 diabetes liability, which became stronger with preglycemic traits, such as citrate, and with glycoprotein acetyls. By age 18 years, elevations were seen in branched amino acids, and by age 25, association had strengthened for the lipid content of very low–density lipoprotein cholesterol.
“Linking genetic liability to adult disease with traits measured much earlier in life can tell you something about how the disease activity unfolds over a lifetime,” Dr. Bell said, adding that the feature that was “most consistently tracked” could be evaluated and could help reveal whether or not an individual might go on to develop type 2 diabetes.
In a press release issued by the EASD, Dr. Bell observed: “It’s remarkable that we can see signs of adult diabetes in the blood from such a young age. Knowing what early features of type 2 diabetes look like, could help us to intervene much earlier to halt progression to full-blown diabetes and its complications.”
The study was funded by Diabetes U.K., Cancer Research U.K., the Elizabeth Blackwell Institute for Health Research, the Wellcome Trust, the Medical Research Council, and the University of Bristol. Dr. Bell said he had no conflicts of interest to declare.
SOURCE: Bell J et al. bioRxiv. 2019 Sep 17. doi: 10.1101/767756.
BARCELONA – Disturbed HDL cholesterol metabolism is one of the earliest features that may predispose individuals to the development of type 2 diabetes, according to data from a genetics and metabolomics study conducted in the United Kingdom.
Changes in HDL cholesterol metabolism were seen in children as young as 8 years, decades before the clinical onset of disease, Joshua Bell, PhD, a research fellow at the University of Bristol (England), reported at the annual meeting of the European Association for the Study of Diabetes.
“We know that type 2 diabetes certainly doesn’t develop overnight,” Dr. Bell said. Indeed, data exist showing that there are changes in glucose metabolism several years before a formal diagnosis may be made in adults. “What we don’t know is what the very earliest features of diabetes look like,” he added.
“The main assumption is that type 2 diabetes is a metabolic disease, and so disease features are visible in systemic metabolism,” explained Dr. Bell. What was not clear, however, was that if any metabolic features – seen mainly in observational studies and in adults – were caused by the disease itself or perhaps were independent causes of type 2 diabetes.To investigate, Dr. Bell and associates performed a study linking genetic liability with metabolomic data collected at four time points from 4,761 offspring from participants in the Avon Longitudinal Study of Parents and Children cohort, which is also known as the Children of the 90s cohort. More than 200 metabolic traits were considered, and a genetic risk score comprising more than 162 single nucleotide polymorphisms previously linked to adult type 2 diabetes was used.
The metabolomic traits considered included lipoprotein subclass-specific cholesterol and triglyceride content, amino and fatty acids, and inflammatory glycoprotein acetyls, which had been measured in childhood at the age of 8 years, in adolescence at 16 years, in young adulthood at 18 years, and in adulthood at 25 years.
Early metabolic features of type 2 diabetes liability were grouped together and one feature that stood out was the sizes of lipid particles. In particular, it was the size of HDL cholesterol particle subtypes in children at the age of 8 years. Before other types of changes in lipid particles were being seen, there were reductions in the lipid content of HDL cholesterol particle subtypes, notably those that were very large.
By age 16 years, strong associations remained with lower lipids in HDL cholesterol particle subtypes and type 2 diabetes liability, which became stronger with preglycemic traits, such as citrate, and with glycoprotein acetyls. By age 18 years, elevations were seen in branched amino acids, and by age 25, association had strengthened for the lipid content of very low–density lipoprotein cholesterol.
“Linking genetic liability to adult disease with traits measured much earlier in life can tell you something about how the disease activity unfolds over a lifetime,” Dr. Bell said, adding that the feature that was “most consistently tracked” could be evaluated and could help reveal whether or not an individual might go on to develop type 2 diabetes.
In a press release issued by the EASD, Dr. Bell observed: “It’s remarkable that we can see signs of adult diabetes in the blood from such a young age. Knowing what early features of type 2 diabetes look like, could help us to intervene much earlier to halt progression to full-blown diabetes and its complications.”
The study was funded by Diabetes U.K., Cancer Research U.K., the Elizabeth Blackwell Institute for Health Research, the Wellcome Trust, the Medical Research Council, and the University of Bristol. Dr. Bell said he had no conflicts of interest to declare.
SOURCE: Bell J et al. bioRxiv. 2019 Sep 17. doi: 10.1101/767756.
REPORTING FROM EASD 2019