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Here’s a top strategy for immunosuppressant discontinuation in SLE
SAN FRANCISCO – Long-term maintenance therapy with hydroxychloroquine initiated after patients with systemic lupus erythematosus (SLE) have discontinued immunosuppressant medication during remission greatly reduces their likelihood of disease flare, Margherita Zen, MD, reported at an international congress on systemic lupus erythematosus.
Dr. Zen, a rheumatologist at the University of Padova in Padua, Italy, presented a retrospective study of 319 SLE patients actively followed in the Padova Lupus Cohort. All of them were treated at some point with one or more immunosuppressants, most commonly mycophenolate, azathioprine, or methotrexate. Fifty-six percent of them never discontinued immunosuppressant therapy during long-term follow-up. Of the 139 patients who did, three-quarters of them were in remission at the time of discontinuation, while the remainder discontinued immunosuppressant medication because of intolerance or poor adherence.
The research question of greatest interest to Dr. Zen and her coinvestigators was whether withdrawal of immunosuppressant medication in lupus patients who have responded well and are in remission is a sound strategy or one fraught with an unacceptably high risk of flare.
“The benefits of drug tapering and discontinuation have been proven for glucocorticoids, but there is not enough evidence available for discontinuation of immunosuppressants,” she said.
The good news: 75% of patients who discontinued immunosuppressant therapy while in remission never experienced a flare during a mean 7.6 years of follow-up after discontinuation. And the median time to flare in those who did was 4.75 years. In contrast, more than two-thirds of patients who discontinued immunosuppressants while not in remission experienced an SLE flare, and the mean time to this event was a mere 8 months. In a Cox regression analysis, patients who discontinued their immunosuppressant medication because of intolerance or poor adherence were 6.9-fold more likely to flare during follow-up than were those who quit immunosuppressants while in remission.
Patients who’d been on methotrexate were significantly more likely to flare after discontinuing the drug than were those who’d been on other immunosuppressant medications. However, flare risk post immunosuppressants was unaffected by whether the medication was given for treatment of lupus nephritis, arthritis, neuropsychiatric involvement, vasculitis, hematologic manifestations of the disease, or skin involvement.
In a multivariate logistic regression analysis, by far the strongest independent protective factor against the occurrence of flare after immunosuppressant discontinuation was maintenance therapy with hydroxychloroquine; it was associated with a 76% reduction in flare risk. Put another way, patients not on maintenance antimalarial therapy after immunosuppressant discontinuation were at an adjusted 5.3-fold increased risk of flare. Combining hydroxychloroquine with low-dose prednisone didn’t provide any added benefit beyond the antimalarial alone in terms of protection against flares.
The other protective factor was duration of remission at the time of immunosuppressant discontinuation: the longer, the better. Patients who experienced a lupus flare had been in remission for an average of 28 months when they stopped taking their immunosuppressant medication. Those who remained flare free throughout follow-up had been in remission for an average of 46 months at discontinuation.
Reassuringly, median damage accrual as assessed by the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index was similar in patients regardless of whether or not they discontinued immunosuppressant therapy.
Dr. Zen reported having no financial conflicts regarding this study, conducted free of commercial support.
SAN FRANCISCO – Long-term maintenance therapy with hydroxychloroquine initiated after patients with systemic lupus erythematosus (SLE) have discontinued immunosuppressant medication during remission greatly reduces their likelihood of disease flare, Margherita Zen, MD, reported at an international congress on systemic lupus erythematosus.
Dr. Zen, a rheumatologist at the University of Padova in Padua, Italy, presented a retrospective study of 319 SLE patients actively followed in the Padova Lupus Cohort. All of them were treated at some point with one or more immunosuppressants, most commonly mycophenolate, azathioprine, or methotrexate. Fifty-six percent of them never discontinued immunosuppressant therapy during long-term follow-up. Of the 139 patients who did, three-quarters of them were in remission at the time of discontinuation, while the remainder discontinued immunosuppressant medication because of intolerance or poor adherence.
The research question of greatest interest to Dr. Zen and her coinvestigators was whether withdrawal of immunosuppressant medication in lupus patients who have responded well and are in remission is a sound strategy or one fraught with an unacceptably high risk of flare.
“The benefits of drug tapering and discontinuation have been proven for glucocorticoids, but there is not enough evidence available for discontinuation of immunosuppressants,” she said.
The good news: 75% of patients who discontinued immunosuppressant therapy while in remission never experienced a flare during a mean 7.6 years of follow-up after discontinuation. And the median time to flare in those who did was 4.75 years. In contrast, more than two-thirds of patients who discontinued immunosuppressants while not in remission experienced an SLE flare, and the mean time to this event was a mere 8 months. In a Cox regression analysis, patients who discontinued their immunosuppressant medication because of intolerance or poor adherence were 6.9-fold more likely to flare during follow-up than were those who quit immunosuppressants while in remission.
Patients who’d been on methotrexate were significantly more likely to flare after discontinuing the drug than were those who’d been on other immunosuppressant medications. However, flare risk post immunosuppressants was unaffected by whether the medication was given for treatment of lupus nephritis, arthritis, neuropsychiatric involvement, vasculitis, hematologic manifestations of the disease, or skin involvement.
In a multivariate logistic regression analysis, by far the strongest independent protective factor against the occurrence of flare after immunosuppressant discontinuation was maintenance therapy with hydroxychloroquine; it was associated with a 76% reduction in flare risk. Put another way, patients not on maintenance antimalarial therapy after immunosuppressant discontinuation were at an adjusted 5.3-fold increased risk of flare. Combining hydroxychloroquine with low-dose prednisone didn’t provide any added benefit beyond the antimalarial alone in terms of protection against flares.
The other protective factor was duration of remission at the time of immunosuppressant discontinuation: the longer, the better. Patients who experienced a lupus flare had been in remission for an average of 28 months when they stopped taking their immunosuppressant medication. Those who remained flare free throughout follow-up had been in remission for an average of 46 months at discontinuation.
Reassuringly, median damage accrual as assessed by the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index was similar in patients regardless of whether or not they discontinued immunosuppressant therapy.
Dr. Zen reported having no financial conflicts regarding this study, conducted free of commercial support.
SAN FRANCISCO – Long-term maintenance therapy with hydroxychloroquine initiated after patients with systemic lupus erythematosus (SLE) have discontinued immunosuppressant medication during remission greatly reduces their likelihood of disease flare, Margherita Zen, MD, reported at an international congress on systemic lupus erythematosus.
Dr. Zen, a rheumatologist at the University of Padova in Padua, Italy, presented a retrospective study of 319 SLE patients actively followed in the Padova Lupus Cohort. All of them were treated at some point with one or more immunosuppressants, most commonly mycophenolate, azathioprine, or methotrexate. Fifty-six percent of them never discontinued immunosuppressant therapy during long-term follow-up. Of the 139 patients who did, three-quarters of them were in remission at the time of discontinuation, while the remainder discontinued immunosuppressant medication because of intolerance or poor adherence.
The research question of greatest interest to Dr. Zen and her coinvestigators was whether withdrawal of immunosuppressant medication in lupus patients who have responded well and are in remission is a sound strategy or one fraught with an unacceptably high risk of flare.
“The benefits of drug tapering and discontinuation have been proven for glucocorticoids, but there is not enough evidence available for discontinuation of immunosuppressants,” she said.
The good news: 75% of patients who discontinued immunosuppressant therapy while in remission never experienced a flare during a mean 7.6 years of follow-up after discontinuation. And the median time to flare in those who did was 4.75 years. In contrast, more than two-thirds of patients who discontinued immunosuppressants while not in remission experienced an SLE flare, and the mean time to this event was a mere 8 months. In a Cox regression analysis, patients who discontinued their immunosuppressant medication because of intolerance or poor adherence were 6.9-fold more likely to flare during follow-up than were those who quit immunosuppressants while in remission.
Patients who’d been on methotrexate were significantly more likely to flare after discontinuing the drug than were those who’d been on other immunosuppressant medications. However, flare risk post immunosuppressants was unaffected by whether the medication was given for treatment of lupus nephritis, arthritis, neuropsychiatric involvement, vasculitis, hematologic manifestations of the disease, or skin involvement.
In a multivariate logistic regression analysis, by far the strongest independent protective factor against the occurrence of flare after immunosuppressant discontinuation was maintenance therapy with hydroxychloroquine; it was associated with a 76% reduction in flare risk. Put another way, patients not on maintenance antimalarial therapy after immunosuppressant discontinuation were at an adjusted 5.3-fold increased risk of flare. Combining hydroxychloroquine with low-dose prednisone didn’t provide any added benefit beyond the antimalarial alone in terms of protection against flares.
The other protective factor was duration of remission at the time of immunosuppressant discontinuation: the longer, the better. Patients who experienced a lupus flare had been in remission for an average of 28 months when they stopped taking their immunosuppressant medication. Those who remained flare free throughout follow-up had been in remission for an average of 46 months at discontinuation.
Reassuringly, median damage accrual as assessed by the Systemic Lupus International Collaborating Clinics/American College of Rheumatology Damage Index was similar in patients regardless of whether or not they discontinued immunosuppressant therapy.
Dr. Zen reported having no financial conflicts regarding this study, conducted free of commercial support.
REPORTING FROM LUPUS 2019
Ticagrelor doesn’t beat clopidogrel in postfibrinolysis STEMI
NEW ORLEANS – In STEMI patients who aren’t able to undergo primary PCI, ticagrelor after fibrinolytic therapy offered no advantages over clopidogrel – a less potent and less costly antiplatelet agent – in rates of cardiovascular events or bleeding though 12 months of follow-up in the TREAT trial.
“In terms of efficacy, it is appropriate to interpret TREAT statistically as a neutral trial,” Otavio Berwanger, MD, PhD, advised at the annual meeting of the American College of Cardiology.
TREAT (Ticagrelor in patients with ST-elevation myocardial infarction treated with pharmacological thrombolysis) was a 10-country, 152-site, randomized, open-label clinical trial of 3,799 STEMI (ST-elevation MI) patients treated with fibrinolytic therapy followed an average of 11 hours later by a loading dose of either ticagrelor (Brilinta) or clopidogrel, then 12 months of standard-dose maintenance therapy of their designated potent antiplatelet drug. The adherence rate was 90% at 12 months. Participating countries included Russia, China, Brazil, Australia, and Canada, but not the United States.
The primary efficacy endpoint was the 12-month composite of death from a vascular cause, MI, stroke, severe recurrent ischemia, TIA, or another arterial thrombotic event. The rate was 8% in the ticagrelor group and 9.1% with clopidogrel, a 12% relative risk reduction in favor of ticagrelor that was not statistically significant. But then, TREAT was underpowered to show a difference in efficacy. However, the 12% relative risk reduction mirrors that seen in the earlier PLATO trial of 18,624 patients with acute coronary syndrome who were randomized to ticagrelor or clopidogrel in conjunction with primary PCI, a difference that was statistically significant because of PLATO’s much larger size (N Engl J Med. 2009 Sep 10;361[11]:1045-57).
TREAT was sufficiently powered to assess safety. There was no significant between-group difference in TIMI major bleeding, the primary safety endpoint. However, the rate of total bleeding events was significantly higher in the ticagrelor arm, by a margin of 10.25% versus 6.15%. Moreover, the rate of TIMI clinically significant bleeding requiring medical attention was also higher in the ticagrelor group – 5.2% versus 3.8% – and the TIMI minimal bleeding rate of 5.85% in the ticagrelor group was more than double that in the clopidogrel arm, reported Dr. Berwanger of the Heart Hospital Research Institute in São Paolo.
These 12-month outcomes echo those previously reported at the 30-day mark in TREAT (JAMA Cardiol. 2018 May 1;3[5]:391-9).
Discussant C. Michael Gibson, MD, put TREAT in perspective: “Here we’re looking to see if there are differences between two thienopyridine inhibitors. There’s nothing really that important on the efficacy side, although there was 1.5% missingness in the study. And there was a higher number of total bleeds with ticagrelor.
“Some of the junior members of the audience may not be all that familiar with fibrinolysis. In the era where it was more prominent, reocclusion occurred in 5%-8% of patients. When it did occur, it led to a tripling of mortality. It’s important to note that the first study of a thienopyridine inhibitor added to lytics was CLARITY, almost 15 years ago, showing a reduction in death, MI, or reocclusion down from about 15% to 7% [N Engl J Med 2005; 352:1179-89]. So it should be very clear to the audience that reocclusion is a problem and the addition of a thienopyridine inhibitor improves that,” explained Dr. Gibson, professor of medicine at Harvard Medical School, Boston.
The TREAT trial was funded by AstraZeneca. Dr. Berwanger reported receiving research grants from and serving as a consultant to that company and half a dozen others.
Simultaneously with the presentation, the TREAT study was published online (J Am Coll Cardiol. 2019 Mar 12. doi: 10.1016/j.jacc.2019.03.011).
NEW ORLEANS – In STEMI patients who aren’t able to undergo primary PCI, ticagrelor after fibrinolytic therapy offered no advantages over clopidogrel – a less potent and less costly antiplatelet agent – in rates of cardiovascular events or bleeding though 12 months of follow-up in the TREAT trial.
“In terms of efficacy, it is appropriate to interpret TREAT statistically as a neutral trial,” Otavio Berwanger, MD, PhD, advised at the annual meeting of the American College of Cardiology.
TREAT (Ticagrelor in patients with ST-elevation myocardial infarction treated with pharmacological thrombolysis) was a 10-country, 152-site, randomized, open-label clinical trial of 3,799 STEMI (ST-elevation MI) patients treated with fibrinolytic therapy followed an average of 11 hours later by a loading dose of either ticagrelor (Brilinta) or clopidogrel, then 12 months of standard-dose maintenance therapy of their designated potent antiplatelet drug. The adherence rate was 90% at 12 months. Participating countries included Russia, China, Brazil, Australia, and Canada, but not the United States.
The primary efficacy endpoint was the 12-month composite of death from a vascular cause, MI, stroke, severe recurrent ischemia, TIA, or another arterial thrombotic event. The rate was 8% in the ticagrelor group and 9.1% with clopidogrel, a 12% relative risk reduction in favor of ticagrelor that was not statistically significant. But then, TREAT was underpowered to show a difference in efficacy. However, the 12% relative risk reduction mirrors that seen in the earlier PLATO trial of 18,624 patients with acute coronary syndrome who were randomized to ticagrelor or clopidogrel in conjunction with primary PCI, a difference that was statistically significant because of PLATO’s much larger size (N Engl J Med. 2009 Sep 10;361[11]:1045-57).
TREAT was sufficiently powered to assess safety. There was no significant between-group difference in TIMI major bleeding, the primary safety endpoint. However, the rate of total bleeding events was significantly higher in the ticagrelor arm, by a margin of 10.25% versus 6.15%. Moreover, the rate of TIMI clinically significant bleeding requiring medical attention was also higher in the ticagrelor group – 5.2% versus 3.8% – and the TIMI minimal bleeding rate of 5.85% in the ticagrelor group was more than double that in the clopidogrel arm, reported Dr. Berwanger of the Heart Hospital Research Institute in São Paolo.
These 12-month outcomes echo those previously reported at the 30-day mark in TREAT (JAMA Cardiol. 2018 May 1;3[5]:391-9).
Discussant C. Michael Gibson, MD, put TREAT in perspective: “Here we’re looking to see if there are differences between two thienopyridine inhibitors. There’s nothing really that important on the efficacy side, although there was 1.5% missingness in the study. And there was a higher number of total bleeds with ticagrelor.
“Some of the junior members of the audience may not be all that familiar with fibrinolysis. In the era where it was more prominent, reocclusion occurred in 5%-8% of patients. When it did occur, it led to a tripling of mortality. It’s important to note that the first study of a thienopyridine inhibitor added to lytics was CLARITY, almost 15 years ago, showing a reduction in death, MI, or reocclusion down from about 15% to 7% [N Engl J Med 2005; 352:1179-89]. So it should be very clear to the audience that reocclusion is a problem and the addition of a thienopyridine inhibitor improves that,” explained Dr. Gibson, professor of medicine at Harvard Medical School, Boston.
The TREAT trial was funded by AstraZeneca. Dr. Berwanger reported receiving research grants from and serving as a consultant to that company and half a dozen others.
Simultaneously with the presentation, the TREAT study was published online (J Am Coll Cardiol. 2019 Mar 12. doi: 10.1016/j.jacc.2019.03.011).
NEW ORLEANS – In STEMI patients who aren’t able to undergo primary PCI, ticagrelor after fibrinolytic therapy offered no advantages over clopidogrel – a less potent and less costly antiplatelet agent – in rates of cardiovascular events or bleeding though 12 months of follow-up in the TREAT trial.
“In terms of efficacy, it is appropriate to interpret TREAT statistically as a neutral trial,” Otavio Berwanger, MD, PhD, advised at the annual meeting of the American College of Cardiology.
TREAT (Ticagrelor in patients with ST-elevation myocardial infarction treated with pharmacological thrombolysis) was a 10-country, 152-site, randomized, open-label clinical trial of 3,799 STEMI (ST-elevation MI) patients treated with fibrinolytic therapy followed an average of 11 hours later by a loading dose of either ticagrelor (Brilinta) or clopidogrel, then 12 months of standard-dose maintenance therapy of their designated potent antiplatelet drug. The adherence rate was 90% at 12 months. Participating countries included Russia, China, Brazil, Australia, and Canada, but not the United States.
The primary efficacy endpoint was the 12-month composite of death from a vascular cause, MI, stroke, severe recurrent ischemia, TIA, or another arterial thrombotic event. The rate was 8% in the ticagrelor group and 9.1% with clopidogrel, a 12% relative risk reduction in favor of ticagrelor that was not statistically significant. But then, TREAT was underpowered to show a difference in efficacy. However, the 12% relative risk reduction mirrors that seen in the earlier PLATO trial of 18,624 patients with acute coronary syndrome who were randomized to ticagrelor or clopidogrel in conjunction with primary PCI, a difference that was statistically significant because of PLATO’s much larger size (N Engl J Med. 2009 Sep 10;361[11]:1045-57).
TREAT was sufficiently powered to assess safety. There was no significant between-group difference in TIMI major bleeding, the primary safety endpoint. However, the rate of total bleeding events was significantly higher in the ticagrelor arm, by a margin of 10.25% versus 6.15%. Moreover, the rate of TIMI clinically significant bleeding requiring medical attention was also higher in the ticagrelor group – 5.2% versus 3.8% – and the TIMI minimal bleeding rate of 5.85% in the ticagrelor group was more than double that in the clopidogrel arm, reported Dr. Berwanger of the Heart Hospital Research Institute in São Paolo.
These 12-month outcomes echo those previously reported at the 30-day mark in TREAT (JAMA Cardiol. 2018 May 1;3[5]:391-9).
Discussant C. Michael Gibson, MD, put TREAT in perspective: “Here we’re looking to see if there are differences between two thienopyridine inhibitors. There’s nothing really that important on the efficacy side, although there was 1.5% missingness in the study. And there was a higher number of total bleeds with ticagrelor.
“Some of the junior members of the audience may not be all that familiar with fibrinolysis. In the era where it was more prominent, reocclusion occurred in 5%-8% of patients. When it did occur, it led to a tripling of mortality. It’s important to note that the first study of a thienopyridine inhibitor added to lytics was CLARITY, almost 15 years ago, showing a reduction in death, MI, or reocclusion down from about 15% to 7% [N Engl J Med 2005; 352:1179-89]. So it should be very clear to the audience that reocclusion is a problem and the addition of a thienopyridine inhibitor improves that,” explained Dr. Gibson, professor of medicine at Harvard Medical School, Boston.
The TREAT trial was funded by AstraZeneca. Dr. Berwanger reported receiving research grants from and serving as a consultant to that company and half a dozen others.
Simultaneously with the presentation, the TREAT study was published online (J Am Coll Cardiol. 2019 Mar 12. doi: 10.1016/j.jacc.2019.03.011).
REPORTING FROM ACC 19
PIONEER-HF Extension: Don’t stall starting sacubitril/valsartan
NEW ORLEANS – Waiting a few months after a patient has been hospitalized for acute decompensated heart failure before launching a switch from enalapril to sacubitril/valsartan imposes a steep price in terms of extra major cardiovascular events, compared with starting the angiotensin-neprilysin inhibitor during the initial hospitalization, according to the open-label extension of the PIONEER-HF trial.
“We think these data have important clinical implications: While sacubitril/valsartan decreases NT-proBNP compared with enalapril regardless of when it is initiated, the early improvement in postdischarge outcomes supports the in-hospital initiation of sacubitril/valsartan in stabilized patients with acute decompensated heart failure,” Adam D. DeVore, MD, declared in presenting the PIONEER-HF Extension results at the annual meeting of the American College of Cardiology.
PIONEER-HF was a landmark, practice-changing, double-blind clinical trial in which 881 patients were randomized to initiation of sacubitril/valsartan (Entresto) or enalapril during hospitalization for acute decompensated heart failure. In the previously reported main outcome, 8 weeks after discharge the sacubitril/valsartan group had a 29% greater reduction in NT-proBNP (the N-terminal prohormone of brain natriuretic peptide) and a 42% lower rate of the composite clinical endpoint of cardiovascular death or heart failure rehospitalization than the enalapril group (N Engl J Med. 2019 Feb 7;380[6]:539-48).
The 4-week open-label extension of PIONEER-HF began at week 8, when participants initially randomized to enalapril during the double-blind phase were switched to sacubitril/valsartan, while those assigned to in-hospital initiation of the angiotensin-neprilysin inhibitor (ARNI) stayed the course.
At week 12, after 4 weeks of open-label treatment, patients on sacubitril/valsartan from the start experienced an additional 18.5% drop in NT-proBNP from their week-8 baseline of 1,218 pg/mL. Meanwhile, the NT-proBNP level in the switch group plunged by 35.8% from a week-8 baseline of 1,630 pg/mL. As a result, both groups ended up at the same much-improved biomarker level at week 12, observed Dr. DeVore, a cardiologist at Duke University in Durham, N.C.
Clinical event rates, however, were another story altogether. The clinical event gap between the two study arms documented at week 8 in the double-blind phase of the trial didn’t close significantly in the 4 weeks after the enalapril group crossed over to open-label sacubitril/valsartan. Indeed, the relative risk of the composite endpoint of cardiovascular death, heart failure rehospitalization, or left ventricular assist device implantation during the 4-week extension phase was 33% lower in the continuous sacubitril/valsartan group than in the switchers. The absolute risk reduction was 5.6%, with a favorable number needed to treat of 18.
This difference was driven mainly by less rehospitalization for heart failure. Few cardiovascular deaths or LVAD implantations occurred during the relatively brief 4-week extension phase of the trial.
“But this is an important thing as we think about what we’re trying to accomplish in heart failure: trying to find tools that improve rehospitalization rates after people leave the hospital is extremely important,” Dr. DeVore said. “We do know that the really vulnerable period for rehospitalization is early on, so my sus```picion – though I can’t prove it – is that’s the important part. That’s when we need to have patients on the best therapy.”
He was asked how practical it is to initiate sacubitril/valsartan during hospitalization for acute decompensated heart failure in real-world clinical practice, given that it can be done only after patients achieve hemodynamic stability.
“I think the definition of hemodynamic stability we used in the trial was a fairly straightforward one, very clinical, and one we can translate to the bedside,” Dr. DeVore replied. “Patients had to have a systolic blood pressure of 100 mm Hg or greater for 6 hours, which is easily documented in the hospital, no changes in IV diuretics or IV vasodilators for 6 hours, and no IV inotropes for the last 24 hours. That’s how we defined hemodynamic stability. I think we should be able to find these patients.”
Average length of stay in the index hospitalization in PIONEER-HF was just over 5 days, but the study protocol actually resulted in longer-than-needed hospitalization because it required that patients had to receive three double-blind doses of their study medication before discharge. In routine practice, it’s unlikely that in-hospital initiation of sacubitril/valsartan will result in a length of stay greater than the national average of about 4.5 days, according the cardiologist.
Current ACC/American Heart Association/Heart Failure Society of American guidelines on management of heart failure include a Class Ia recommendation to switch patients from an ACE inhibitor or angiotensin inhibitor to sacubitril/valsartan (Circulation. 2017 Aug 8;136[6]:e137-61).
However, heart failure specialists are concerned by national data showing that sacubitril/valsartan remains widely underprescribed.
Dr. DeVore reported serving as a consultant to Novartis and receiving research grants from a half dozen pharmaceutical companies as well as the American Heart Association, National Heart, Lung, and Blood Institute, and the Patient-Centered Outcomes Research Institute .
NEW ORLEANS – Waiting a few months after a patient has been hospitalized for acute decompensated heart failure before launching a switch from enalapril to sacubitril/valsartan imposes a steep price in terms of extra major cardiovascular events, compared with starting the angiotensin-neprilysin inhibitor during the initial hospitalization, according to the open-label extension of the PIONEER-HF trial.
“We think these data have important clinical implications: While sacubitril/valsartan decreases NT-proBNP compared with enalapril regardless of when it is initiated, the early improvement in postdischarge outcomes supports the in-hospital initiation of sacubitril/valsartan in stabilized patients with acute decompensated heart failure,” Adam D. DeVore, MD, declared in presenting the PIONEER-HF Extension results at the annual meeting of the American College of Cardiology.
PIONEER-HF was a landmark, practice-changing, double-blind clinical trial in which 881 patients were randomized to initiation of sacubitril/valsartan (Entresto) or enalapril during hospitalization for acute decompensated heart failure. In the previously reported main outcome, 8 weeks after discharge the sacubitril/valsartan group had a 29% greater reduction in NT-proBNP (the N-terminal prohormone of brain natriuretic peptide) and a 42% lower rate of the composite clinical endpoint of cardiovascular death or heart failure rehospitalization than the enalapril group (N Engl J Med. 2019 Feb 7;380[6]:539-48).
The 4-week open-label extension of PIONEER-HF began at week 8, when participants initially randomized to enalapril during the double-blind phase were switched to sacubitril/valsartan, while those assigned to in-hospital initiation of the angiotensin-neprilysin inhibitor (ARNI) stayed the course.
At week 12, after 4 weeks of open-label treatment, patients on sacubitril/valsartan from the start experienced an additional 18.5% drop in NT-proBNP from their week-8 baseline of 1,218 pg/mL. Meanwhile, the NT-proBNP level in the switch group plunged by 35.8% from a week-8 baseline of 1,630 pg/mL. As a result, both groups ended up at the same much-improved biomarker level at week 12, observed Dr. DeVore, a cardiologist at Duke University in Durham, N.C.
Clinical event rates, however, were another story altogether. The clinical event gap between the two study arms documented at week 8 in the double-blind phase of the trial didn’t close significantly in the 4 weeks after the enalapril group crossed over to open-label sacubitril/valsartan. Indeed, the relative risk of the composite endpoint of cardiovascular death, heart failure rehospitalization, or left ventricular assist device implantation during the 4-week extension phase was 33% lower in the continuous sacubitril/valsartan group than in the switchers. The absolute risk reduction was 5.6%, with a favorable number needed to treat of 18.
This difference was driven mainly by less rehospitalization for heart failure. Few cardiovascular deaths or LVAD implantations occurred during the relatively brief 4-week extension phase of the trial.
“But this is an important thing as we think about what we’re trying to accomplish in heart failure: trying to find tools that improve rehospitalization rates after people leave the hospital is extremely important,” Dr. DeVore said. “We do know that the really vulnerable period for rehospitalization is early on, so my sus```picion – though I can’t prove it – is that’s the important part. That’s when we need to have patients on the best therapy.”
He was asked how practical it is to initiate sacubitril/valsartan during hospitalization for acute decompensated heart failure in real-world clinical practice, given that it can be done only after patients achieve hemodynamic stability.
“I think the definition of hemodynamic stability we used in the trial was a fairly straightforward one, very clinical, and one we can translate to the bedside,” Dr. DeVore replied. “Patients had to have a systolic blood pressure of 100 mm Hg or greater for 6 hours, which is easily documented in the hospital, no changes in IV diuretics or IV vasodilators for 6 hours, and no IV inotropes for the last 24 hours. That’s how we defined hemodynamic stability. I think we should be able to find these patients.”
Average length of stay in the index hospitalization in PIONEER-HF was just over 5 days, but the study protocol actually resulted in longer-than-needed hospitalization because it required that patients had to receive three double-blind doses of their study medication before discharge. In routine practice, it’s unlikely that in-hospital initiation of sacubitril/valsartan will result in a length of stay greater than the national average of about 4.5 days, according the cardiologist.
Current ACC/American Heart Association/Heart Failure Society of American guidelines on management of heart failure include a Class Ia recommendation to switch patients from an ACE inhibitor or angiotensin inhibitor to sacubitril/valsartan (Circulation. 2017 Aug 8;136[6]:e137-61).
However, heart failure specialists are concerned by national data showing that sacubitril/valsartan remains widely underprescribed.
Dr. DeVore reported serving as a consultant to Novartis and receiving research grants from a half dozen pharmaceutical companies as well as the American Heart Association, National Heart, Lung, and Blood Institute, and the Patient-Centered Outcomes Research Institute .
NEW ORLEANS – Waiting a few months after a patient has been hospitalized for acute decompensated heart failure before launching a switch from enalapril to sacubitril/valsartan imposes a steep price in terms of extra major cardiovascular events, compared with starting the angiotensin-neprilysin inhibitor during the initial hospitalization, according to the open-label extension of the PIONEER-HF trial.
“We think these data have important clinical implications: While sacubitril/valsartan decreases NT-proBNP compared with enalapril regardless of when it is initiated, the early improvement in postdischarge outcomes supports the in-hospital initiation of sacubitril/valsartan in stabilized patients with acute decompensated heart failure,” Adam D. DeVore, MD, declared in presenting the PIONEER-HF Extension results at the annual meeting of the American College of Cardiology.
PIONEER-HF was a landmark, practice-changing, double-blind clinical trial in which 881 patients were randomized to initiation of sacubitril/valsartan (Entresto) or enalapril during hospitalization for acute decompensated heart failure. In the previously reported main outcome, 8 weeks after discharge the sacubitril/valsartan group had a 29% greater reduction in NT-proBNP (the N-terminal prohormone of brain natriuretic peptide) and a 42% lower rate of the composite clinical endpoint of cardiovascular death or heart failure rehospitalization than the enalapril group (N Engl J Med. 2019 Feb 7;380[6]:539-48).
The 4-week open-label extension of PIONEER-HF began at week 8, when participants initially randomized to enalapril during the double-blind phase were switched to sacubitril/valsartan, while those assigned to in-hospital initiation of the angiotensin-neprilysin inhibitor (ARNI) stayed the course.
At week 12, after 4 weeks of open-label treatment, patients on sacubitril/valsartan from the start experienced an additional 18.5% drop in NT-proBNP from their week-8 baseline of 1,218 pg/mL. Meanwhile, the NT-proBNP level in the switch group plunged by 35.8% from a week-8 baseline of 1,630 pg/mL. As a result, both groups ended up at the same much-improved biomarker level at week 12, observed Dr. DeVore, a cardiologist at Duke University in Durham, N.C.
Clinical event rates, however, were another story altogether. The clinical event gap between the two study arms documented at week 8 in the double-blind phase of the trial didn’t close significantly in the 4 weeks after the enalapril group crossed over to open-label sacubitril/valsartan. Indeed, the relative risk of the composite endpoint of cardiovascular death, heart failure rehospitalization, or left ventricular assist device implantation during the 4-week extension phase was 33% lower in the continuous sacubitril/valsartan group than in the switchers. The absolute risk reduction was 5.6%, with a favorable number needed to treat of 18.
This difference was driven mainly by less rehospitalization for heart failure. Few cardiovascular deaths or LVAD implantations occurred during the relatively brief 4-week extension phase of the trial.
“But this is an important thing as we think about what we’re trying to accomplish in heart failure: trying to find tools that improve rehospitalization rates after people leave the hospital is extremely important,” Dr. DeVore said. “We do know that the really vulnerable period for rehospitalization is early on, so my sus```picion – though I can’t prove it – is that’s the important part. That’s when we need to have patients on the best therapy.”
He was asked how practical it is to initiate sacubitril/valsartan during hospitalization for acute decompensated heart failure in real-world clinical practice, given that it can be done only after patients achieve hemodynamic stability.
“I think the definition of hemodynamic stability we used in the trial was a fairly straightforward one, very clinical, and one we can translate to the bedside,” Dr. DeVore replied. “Patients had to have a systolic blood pressure of 100 mm Hg or greater for 6 hours, which is easily documented in the hospital, no changes in IV diuretics or IV vasodilators for 6 hours, and no IV inotropes for the last 24 hours. That’s how we defined hemodynamic stability. I think we should be able to find these patients.”
Average length of stay in the index hospitalization in PIONEER-HF was just over 5 days, but the study protocol actually resulted in longer-than-needed hospitalization because it required that patients had to receive three double-blind doses of their study medication before discharge. In routine practice, it’s unlikely that in-hospital initiation of sacubitril/valsartan will result in a length of stay greater than the national average of about 4.5 days, according the cardiologist.
Current ACC/American Heart Association/Heart Failure Society of American guidelines on management of heart failure include a Class Ia recommendation to switch patients from an ACE inhibitor or angiotensin inhibitor to sacubitril/valsartan (Circulation. 2017 Aug 8;136[6]:e137-61).
However, heart failure specialists are concerned by national data showing that sacubitril/valsartan remains widely underprescribed.
Dr. DeVore reported serving as a consultant to Novartis and receiving research grants from a half dozen pharmaceutical companies as well as the American Heart Association, National Heart, Lung, and Blood Institute, and the Patient-Centered Outcomes Research Institute .
REPORTING FROM ACC 19
Key clinical point: over the next 12 weeks, compared with initiation of enalapril followed by a delayed switch to sacubitril/valsartan at 8 weeks.
Major finding: The number needed to treat with in-hospital initiation of sacubitril/valsartan instead of enalapril to avoid one cardiovascular death, heart failure rehospitalization, or implantation of a left ventricular assist device was 18.
Study details: The PIONEER-HF Extension study included 881 heart failure patients, all on open-label sacubitril/valsartan during the 4-week extension phase.
Disclosures: The study was sponsored by AstraZeneca. The presenter reported receiving research grants from and serving as a consultant to the company.
ACE inhibitors may improve neuropsychiatric lupus
SAN FRANCISCO – The announcement of a first-ever multicenter randomized trial of ACE inhibitors for the treatment of cognitive impairment in systemic lupus erythematosus patients generated some of the biggest buzz at LUPUS 2019.
“The time has come to implement clinical trials in lupus to see if we can address what is one of the most distressing aspects of the disease to patients,” Betty Diamond, MD, said in announcing the planned trial at an international congress on systemic lupus erythematosus (SLE).
Neuropsychiatric lupus, characterized most often by cognitive impairment, affects 40%-90% of SLE patients, according to various epidemiologic studies. This confusion and memory loss has been shown to be independent of systemic disease activity.
“Cognitive impairment is a very common problem and a very insidious problem in lupus patients,” emphasized Dr. Diamond, professor and head of the Center for Autoimmune Musculoskeletal and Hematopoietic Diseases at the Feinstein Institute for Medical Research in Manhasset, New York.
Dr. Diamond was the recipient of the 2018 Lupus Insight Prize awarded by the Lupus Research Alliance, which is funding the multicenter randomized trial. For the study, roughly 70 SLE patients with cognitive impairment not associated with a focal brain lesion will be randomized to receive a centrally acting ACE inhibitor – captopril was the one she and her coinvestigators have used in their mouse model and preliminary clinical studies – or to a non–centrally acting ACE inhibitor, such as enalapril.
“The clinical trial compares an ACE inhibitor that crosses the blood-brain barrier with one that doesn’t. They both have the same renal protection and systemic anti-inflammatory effects,” explained Dr. Diamond, who is also professor of molecular medicine and of medicine at the Zucker School of Medicine at Hofstra/Northwell, East Garden City, N.Y.
In a recent publication (J Exp Med. 2018 Oct 1;215[10]:2554-66), Dr. Diamond and her coinvestigators presented much of the background work that underpins the upcoming randomized trial. Sixteen years ago, they discovered two anti-DNA antibodies that cross-react with the N-methyl-D-aspartate receptor (NMDAR) and enhance NMDAR signaling. They showed that while the NMDARs are critical in learning and memory, their prolonged stimulation results in a high degree of calcium influx, causing neuronal death. These anti-DNA/anti-NMDAR antibodies, known as DNRAbs, are present at elevated titers in 30%-40% of SLE patients, and in a higher proportion of those with neuropsychiatric lupus.
“Most importantly, DNRAbs are present in the cerebrospinal fluid of patients who have nonfocal CNS manifestations of lupus,” Dr. Diamond said.
She and her coworkers developed a mouse model of cognitive impairment in lupus and utilized it to identify a two-stage model of the pathogenesis of DNRAb-mediated neuropsychiatric lupus. First, a traumatic event such as an infection causes a temporary opening in the blood-brain barrier, allowing the DNRAbs to reach the brain. This results in acute excitotoxic neuronal death. This is followed by a second stage, which entails activation of microglia – known as the macrophages of the CNS – with resultant loss of neuronal dendritic arborization and complexity. In the mouse model, this causes a selective impairment in spatial memory that corresponds well to the spatial memory deficit the investigators documented in DNRAb-positive SLE patients, compared with healthy controls and DNRAb-negative lupus patients.
A key finding in this project, Dr. Diamond continued, was that activated microglia turn out to be critical for dendritic loss. If the microglia are deactivated, regrowth of the dendritic processes occurs. This raises a possibility that attendees at LUPUS 2019 found thrilling: Perhaps the cognitive impairment of neuropsychiatric SLE can be prevented and even reversed by suppressing microglial activation.
Promising work in the field of Alzheimer’s disease suggests that centrally acting ACE inhibitors can indeed suppress microglial activation and actually improve cognition. Dr. Diamond and her colleagues showed this also was the case in their mouse model. Moreover, in a small clinical study they used PET brain imaging to show that captopril reduced the increased glucose uptake and hippocampal hypermetabolism associated with DNRAb-positive neuropsychiatric lupus, an effect maintained through 18 months of follow-up.
“We think DNRAbs contribute to cognitive impairment in SLE patients, but we certainly wouldn’t say that antibodies are the only mechanism. Other investigators have shown that interferon can also do this, and that, like the antibodies, interferon acts through microglial activation. We think that this microglial activation is going to be a general paradigm in cognitive impairment in lupus and in other diseases, so microglia are a very good therapeutic target,” Dr. Diamond said.
The primary outcomes in the forthcoming randomized trial involve PET neuronal imaging. They investigators are hoping to see reduced hippocampal hypermetabolism and suppression of activated microglial cells.
“We’ll see if we’re actually hitting our target. We’re doing neuropsychologic testing, too, but we’re really concentrating on imaging outcomes, because those are objective and have many fewer variables to confound them,” according to Dr. Diamond.
Microglial activation is a current topic of intense research interest within the pharmaceutical industry, she added. If the imaging study is positive, she anticipates drug companies will quickly ramp up and conduct large clinical trials powered to show significant results in terms of neuropsychologic test scores and clinical outcomes.
Dr. Diamond reported having no financial conflicts regarding her work, which has been supported largely by the National Institutes of Health.
SAN FRANCISCO – The announcement of a first-ever multicenter randomized trial of ACE inhibitors for the treatment of cognitive impairment in systemic lupus erythematosus patients generated some of the biggest buzz at LUPUS 2019.
“The time has come to implement clinical trials in lupus to see if we can address what is one of the most distressing aspects of the disease to patients,” Betty Diamond, MD, said in announcing the planned trial at an international congress on systemic lupus erythematosus (SLE).
Neuropsychiatric lupus, characterized most often by cognitive impairment, affects 40%-90% of SLE patients, according to various epidemiologic studies. This confusion and memory loss has been shown to be independent of systemic disease activity.
“Cognitive impairment is a very common problem and a very insidious problem in lupus patients,” emphasized Dr. Diamond, professor and head of the Center for Autoimmune Musculoskeletal and Hematopoietic Diseases at the Feinstein Institute for Medical Research in Manhasset, New York.
Dr. Diamond was the recipient of the 2018 Lupus Insight Prize awarded by the Lupus Research Alliance, which is funding the multicenter randomized trial. For the study, roughly 70 SLE patients with cognitive impairment not associated with a focal brain lesion will be randomized to receive a centrally acting ACE inhibitor – captopril was the one she and her coinvestigators have used in their mouse model and preliminary clinical studies – or to a non–centrally acting ACE inhibitor, such as enalapril.
“The clinical trial compares an ACE inhibitor that crosses the blood-brain barrier with one that doesn’t. They both have the same renal protection and systemic anti-inflammatory effects,” explained Dr. Diamond, who is also professor of molecular medicine and of medicine at the Zucker School of Medicine at Hofstra/Northwell, East Garden City, N.Y.
In a recent publication (J Exp Med. 2018 Oct 1;215[10]:2554-66), Dr. Diamond and her coinvestigators presented much of the background work that underpins the upcoming randomized trial. Sixteen years ago, they discovered two anti-DNA antibodies that cross-react with the N-methyl-D-aspartate receptor (NMDAR) and enhance NMDAR signaling. They showed that while the NMDARs are critical in learning and memory, their prolonged stimulation results in a high degree of calcium influx, causing neuronal death. These anti-DNA/anti-NMDAR antibodies, known as DNRAbs, are present at elevated titers in 30%-40% of SLE patients, and in a higher proportion of those with neuropsychiatric lupus.
“Most importantly, DNRAbs are present in the cerebrospinal fluid of patients who have nonfocal CNS manifestations of lupus,” Dr. Diamond said.
She and her coworkers developed a mouse model of cognitive impairment in lupus and utilized it to identify a two-stage model of the pathogenesis of DNRAb-mediated neuropsychiatric lupus. First, a traumatic event such as an infection causes a temporary opening in the blood-brain barrier, allowing the DNRAbs to reach the brain. This results in acute excitotoxic neuronal death. This is followed by a second stage, which entails activation of microglia – known as the macrophages of the CNS – with resultant loss of neuronal dendritic arborization and complexity. In the mouse model, this causes a selective impairment in spatial memory that corresponds well to the spatial memory deficit the investigators documented in DNRAb-positive SLE patients, compared with healthy controls and DNRAb-negative lupus patients.
A key finding in this project, Dr. Diamond continued, was that activated microglia turn out to be critical for dendritic loss. If the microglia are deactivated, regrowth of the dendritic processes occurs. This raises a possibility that attendees at LUPUS 2019 found thrilling: Perhaps the cognitive impairment of neuropsychiatric SLE can be prevented and even reversed by suppressing microglial activation.
Promising work in the field of Alzheimer’s disease suggests that centrally acting ACE inhibitors can indeed suppress microglial activation and actually improve cognition. Dr. Diamond and her colleagues showed this also was the case in their mouse model. Moreover, in a small clinical study they used PET brain imaging to show that captopril reduced the increased glucose uptake and hippocampal hypermetabolism associated with DNRAb-positive neuropsychiatric lupus, an effect maintained through 18 months of follow-up.
“We think DNRAbs contribute to cognitive impairment in SLE patients, but we certainly wouldn’t say that antibodies are the only mechanism. Other investigators have shown that interferon can also do this, and that, like the antibodies, interferon acts through microglial activation. We think that this microglial activation is going to be a general paradigm in cognitive impairment in lupus and in other diseases, so microglia are a very good therapeutic target,” Dr. Diamond said.
The primary outcomes in the forthcoming randomized trial involve PET neuronal imaging. They investigators are hoping to see reduced hippocampal hypermetabolism and suppression of activated microglial cells.
“We’ll see if we’re actually hitting our target. We’re doing neuropsychologic testing, too, but we’re really concentrating on imaging outcomes, because those are objective and have many fewer variables to confound them,” according to Dr. Diamond.
Microglial activation is a current topic of intense research interest within the pharmaceutical industry, she added. If the imaging study is positive, she anticipates drug companies will quickly ramp up and conduct large clinical trials powered to show significant results in terms of neuropsychologic test scores and clinical outcomes.
Dr. Diamond reported having no financial conflicts regarding her work, which has been supported largely by the National Institutes of Health.
SAN FRANCISCO – The announcement of a first-ever multicenter randomized trial of ACE inhibitors for the treatment of cognitive impairment in systemic lupus erythematosus patients generated some of the biggest buzz at LUPUS 2019.
“The time has come to implement clinical trials in lupus to see if we can address what is one of the most distressing aspects of the disease to patients,” Betty Diamond, MD, said in announcing the planned trial at an international congress on systemic lupus erythematosus (SLE).
Neuropsychiatric lupus, characterized most often by cognitive impairment, affects 40%-90% of SLE patients, according to various epidemiologic studies. This confusion and memory loss has been shown to be independent of systemic disease activity.
“Cognitive impairment is a very common problem and a very insidious problem in lupus patients,” emphasized Dr. Diamond, professor and head of the Center for Autoimmune Musculoskeletal and Hematopoietic Diseases at the Feinstein Institute for Medical Research in Manhasset, New York.
Dr. Diamond was the recipient of the 2018 Lupus Insight Prize awarded by the Lupus Research Alliance, which is funding the multicenter randomized trial. For the study, roughly 70 SLE patients with cognitive impairment not associated with a focal brain lesion will be randomized to receive a centrally acting ACE inhibitor – captopril was the one she and her coinvestigators have used in their mouse model and preliminary clinical studies – or to a non–centrally acting ACE inhibitor, such as enalapril.
“The clinical trial compares an ACE inhibitor that crosses the blood-brain barrier with one that doesn’t. They both have the same renal protection and systemic anti-inflammatory effects,” explained Dr. Diamond, who is also professor of molecular medicine and of medicine at the Zucker School of Medicine at Hofstra/Northwell, East Garden City, N.Y.
In a recent publication (J Exp Med. 2018 Oct 1;215[10]:2554-66), Dr. Diamond and her coinvestigators presented much of the background work that underpins the upcoming randomized trial. Sixteen years ago, they discovered two anti-DNA antibodies that cross-react with the N-methyl-D-aspartate receptor (NMDAR) and enhance NMDAR signaling. They showed that while the NMDARs are critical in learning and memory, their prolonged stimulation results in a high degree of calcium influx, causing neuronal death. These anti-DNA/anti-NMDAR antibodies, known as DNRAbs, are present at elevated titers in 30%-40% of SLE patients, and in a higher proportion of those with neuropsychiatric lupus.
“Most importantly, DNRAbs are present in the cerebrospinal fluid of patients who have nonfocal CNS manifestations of lupus,” Dr. Diamond said.
She and her coworkers developed a mouse model of cognitive impairment in lupus and utilized it to identify a two-stage model of the pathogenesis of DNRAb-mediated neuropsychiatric lupus. First, a traumatic event such as an infection causes a temporary opening in the blood-brain barrier, allowing the DNRAbs to reach the brain. This results in acute excitotoxic neuronal death. This is followed by a second stage, which entails activation of microglia – known as the macrophages of the CNS – with resultant loss of neuronal dendritic arborization and complexity. In the mouse model, this causes a selective impairment in spatial memory that corresponds well to the spatial memory deficit the investigators documented in DNRAb-positive SLE patients, compared with healthy controls and DNRAb-negative lupus patients.
A key finding in this project, Dr. Diamond continued, was that activated microglia turn out to be critical for dendritic loss. If the microglia are deactivated, regrowth of the dendritic processes occurs. This raises a possibility that attendees at LUPUS 2019 found thrilling: Perhaps the cognitive impairment of neuropsychiatric SLE can be prevented and even reversed by suppressing microglial activation.
Promising work in the field of Alzheimer’s disease suggests that centrally acting ACE inhibitors can indeed suppress microglial activation and actually improve cognition. Dr. Diamond and her colleagues showed this also was the case in their mouse model. Moreover, in a small clinical study they used PET brain imaging to show that captopril reduced the increased glucose uptake and hippocampal hypermetabolism associated with DNRAb-positive neuropsychiatric lupus, an effect maintained through 18 months of follow-up.
“We think DNRAbs contribute to cognitive impairment in SLE patients, but we certainly wouldn’t say that antibodies are the only mechanism. Other investigators have shown that interferon can also do this, and that, like the antibodies, interferon acts through microglial activation. We think that this microglial activation is going to be a general paradigm in cognitive impairment in lupus and in other diseases, so microglia are a very good therapeutic target,” Dr. Diamond said.
The primary outcomes in the forthcoming randomized trial involve PET neuronal imaging. They investigators are hoping to see reduced hippocampal hypermetabolism and suppression of activated microglial cells.
“We’ll see if we’re actually hitting our target. We’re doing neuropsychologic testing, too, but we’re really concentrating on imaging outcomes, because those are objective and have many fewer variables to confound them,” according to Dr. Diamond.
Microglial activation is a current topic of intense research interest within the pharmaceutical industry, she added. If the imaging study is positive, she anticipates drug companies will quickly ramp up and conduct large clinical trials powered to show significant results in terms of neuropsychologic test scores and clinical outcomes.
Dr. Diamond reported having no financial conflicts regarding her work, which has been supported largely by the National Institutes of Health.
REPORTING FROM LUPUS 2019
Key clinical point: ACE inhibitor therapy may prevent and/or improve neuropsychiatric lupus.
Major finding: The first-ever multicenter randomized trial of ACE inhibitor therapy for neuropsychiatric SLE will soon get underway.
Study details: The planned – and funded – trial will include roughly 70 patients with neuropsychiatric lupus.
Disclosures: The presenter reported having no financial conflicts regarding her work, which has been supported largely by the National Institutes of Health.
Novel percutaneous therapy for HOCM in development
SNOWMASS, COLO. – Percutaneous mitral valve plication shows early promise as a primary therapy for severely symptomatic, drug-refractory hypertrophic obstructive cardiomyopathy (HOCM), Paul Sorajja, MD, said at the Annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.
He and his coworkers at the Minneapolis Heart Institute developed the novel procedure and published the first experience in the world with it. But further study in a much larger patient population is needed before percutaneous mitral plication is ready for prime time as a treatment for symptomatic HOCM, according to Dr. Sorajja, director of the Center of Valve and Structural Heart Disease at the institute.
Surgical myectomy is the guideline-recommended standard for treatment of patients with disabling symptoms caused by left ventricular outflow tract obstruction in the setting of hypertrophic cardiomyopathy. Alcohol septal ablation is a widely utilized alternative in patients who are frail and elderly or otherwise high-risk surgical candidates, or who lack ready access to an experienced surgical myectomy center, where the best outcomes are achieved. But roughly 20% of patients evaluated for alcohol septal ablation don’t have a septal artery anatomy amenable to the procedure. Other patients are put off by the 10%-50% risk that they will require a permanent pacemaker after alcohol septal ablation, depending upon their baseline ECG. And a small percentage of well-chosen patients – less than 10% – will experience inadequate gradient relief following alcohol septal ablation. So there is room for a novel therapeutic approach.
A percutaneous mitral clip–based solution, while technically challenging, offers several advantages over surgical myectomy and alcohol septal ablation. It’s less invasive, doesn’t create a potentially arrhythmogenic ablation scar requiring a permanent pacemaker, and it targets the mitral valve directly, addressing the mitral regurgitation that causes the left ventricular outflow tract obstruction. In contrast, both surgical myectomy and alcohol septal ablation target the ventricular septum.
Dr. Sorajja summarized his experience to date with percutaneous mitral valve plication for symptomatic HOCM, which encompasses the six patients in the published study (J Am Coll Cardiol. 2016 Jun 21;67[24]:2811-8) and the four others treated since then. The procedure was completed with placement of a single MitraClip in 9 of 10 patients. One patient experienced cardiac tamponade, resulting in a halt of the procedure; in the other nine, the intervention eliminated systolic anterior motion and markedly decreased the intraoperative left ventricular outflow tract gradient and mitral regurgitation.
At 2-5 years of follow-up, all patients have improved from New York Heart Association functional class III preprocedurally to class I or II. One patient required alcohol septal ablation. High systolic left ventricular outflow tract velocities in excess of 4 cm/s have been documented via follow-up echocardiography in some patients, the significance of which is under study.
Dr. Sorajja reported receiving research funding from Abbott Structural, Boston Scientific, Edwards Lifesciences, and Medtronic, and serving as a consultant to those companies and several others.
SNOWMASS, COLO. – Percutaneous mitral valve plication shows early promise as a primary therapy for severely symptomatic, drug-refractory hypertrophic obstructive cardiomyopathy (HOCM), Paul Sorajja, MD, said at the Annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.
He and his coworkers at the Minneapolis Heart Institute developed the novel procedure and published the first experience in the world with it. But further study in a much larger patient population is needed before percutaneous mitral plication is ready for prime time as a treatment for symptomatic HOCM, according to Dr. Sorajja, director of the Center of Valve and Structural Heart Disease at the institute.
Surgical myectomy is the guideline-recommended standard for treatment of patients with disabling symptoms caused by left ventricular outflow tract obstruction in the setting of hypertrophic cardiomyopathy. Alcohol septal ablation is a widely utilized alternative in patients who are frail and elderly or otherwise high-risk surgical candidates, or who lack ready access to an experienced surgical myectomy center, where the best outcomes are achieved. But roughly 20% of patients evaluated for alcohol septal ablation don’t have a septal artery anatomy amenable to the procedure. Other patients are put off by the 10%-50% risk that they will require a permanent pacemaker after alcohol septal ablation, depending upon their baseline ECG. And a small percentage of well-chosen patients – less than 10% – will experience inadequate gradient relief following alcohol septal ablation. So there is room for a novel therapeutic approach.
A percutaneous mitral clip–based solution, while technically challenging, offers several advantages over surgical myectomy and alcohol septal ablation. It’s less invasive, doesn’t create a potentially arrhythmogenic ablation scar requiring a permanent pacemaker, and it targets the mitral valve directly, addressing the mitral regurgitation that causes the left ventricular outflow tract obstruction. In contrast, both surgical myectomy and alcohol septal ablation target the ventricular septum.
Dr. Sorajja summarized his experience to date with percutaneous mitral valve plication for symptomatic HOCM, which encompasses the six patients in the published study (J Am Coll Cardiol. 2016 Jun 21;67[24]:2811-8) and the four others treated since then. The procedure was completed with placement of a single MitraClip in 9 of 10 patients. One patient experienced cardiac tamponade, resulting in a halt of the procedure; in the other nine, the intervention eliminated systolic anterior motion and markedly decreased the intraoperative left ventricular outflow tract gradient and mitral regurgitation.
At 2-5 years of follow-up, all patients have improved from New York Heart Association functional class III preprocedurally to class I or II. One patient required alcohol septal ablation. High systolic left ventricular outflow tract velocities in excess of 4 cm/s have been documented via follow-up echocardiography in some patients, the significance of which is under study.
Dr. Sorajja reported receiving research funding from Abbott Structural, Boston Scientific, Edwards Lifesciences, and Medtronic, and serving as a consultant to those companies and several others.
SNOWMASS, COLO. – Percutaneous mitral valve plication shows early promise as a primary therapy for severely symptomatic, drug-refractory hypertrophic obstructive cardiomyopathy (HOCM), Paul Sorajja, MD, said at the Annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.
He and his coworkers at the Minneapolis Heart Institute developed the novel procedure and published the first experience in the world with it. But further study in a much larger patient population is needed before percutaneous mitral plication is ready for prime time as a treatment for symptomatic HOCM, according to Dr. Sorajja, director of the Center of Valve and Structural Heart Disease at the institute.
Surgical myectomy is the guideline-recommended standard for treatment of patients with disabling symptoms caused by left ventricular outflow tract obstruction in the setting of hypertrophic cardiomyopathy. Alcohol septal ablation is a widely utilized alternative in patients who are frail and elderly or otherwise high-risk surgical candidates, or who lack ready access to an experienced surgical myectomy center, where the best outcomes are achieved. But roughly 20% of patients evaluated for alcohol septal ablation don’t have a septal artery anatomy amenable to the procedure. Other patients are put off by the 10%-50% risk that they will require a permanent pacemaker after alcohol septal ablation, depending upon their baseline ECG. And a small percentage of well-chosen patients – less than 10% – will experience inadequate gradient relief following alcohol septal ablation. So there is room for a novel therapeutic approach.
A percutaneous mitral clip–based solution, while technically challenging, offers several advantages over surgical myectomy and alcohol septal ablation. It’s less invasive, doesn’t create a potentially arrhythmogenic ablation scar requiring a permanent pacemaker, and it targets the mitral valve directly, addressing the mitral regurgitation that causes the left ventricular outflow tract obstruction. In contrast, both surgical myectomy and alcohol septal ablation target the ventricular septum.
Dr. Sorajja summarized his experience to date with percutaneous mitral valve plication for symptomatic HOCM, which encompasses the six patients in the published study (J Am Coll Cardiol. 2016 Jun 21;67[24]:2811-8) and the four others treated since then. The procedure was completed with placement of a single MitraClip in 9 of 10 patients. One patient experienced cardiac tamponade, resulting in a halt of the procedure; in the other nine, the intervention eliminated systolic anterior motion and markedly decreased the intraoperative left ventricular outflow tract gradient and mitral regurgitation.
At 2-5 years of follow-up, all patients have improved from New York Heart Association functional class III preprocedurally to class I or II. One patient required alcohol septal ablation. High systolic left ventricular outflow tract velocities in excess of 4 cm/s have been documented via follow-up echocardiography in some patients, the significance of which is under study.
Dr. Sorajja reported receiving research funding from Abbott Structural, Boston Scientific, Edwards Lifesciences, and Medtronic, and serving as a consultant to those companies and several others.
REPORTING FROM ACC SNOWMASS 2019
Dapagliflozin’s cardiovascular benefits bloom in T2D with prior MI
NEW ORLEANS – Dapagliflozin markedly reduces the risks of both major adverse cardiovascular events and heart failure hospitalization in the subset of patients with type 2 diabetes (T2D) and prior MI, according to a new subanalysis of the landmark DECLARE-TIMI 58 trial.
The effectiveness of dapagliflozin (Farxiga), an oral sodium glucose transporter-2 inhibitor (SGLT-2i), was particularly striking with regard to prevention of recurrent MI, Remo H.M. Furtado, MD, reported at the annual meeting of the American College of Cardiology.
“The 22% relative risk reduction in recurrent MI with dapagliflozin is comparable to other established therapies used in secondary prevention after MI, like DAPT [dual-antiplatelet therapy] and intensive lipid lowering,” observed Dr. Furtado of Brigham and Women’s Hospital, Boston.
Not bad for a drug developed as a glucose-lowering agent.
The new DECLARE-TIMI 58 subanalysis provides information that’s relevant to ACC guidelines issued in late 2018. The guidelines, in the form of an “expert consensus decision pathway,” emphatically recommend that all patients with T2D and known atherosclerotic cardiovascular disease (ASCVD) should have metformin as their first-line glucose-lowering agent, while at the same time giving serious consideration to the addition of either an oral SGLT-2i or a subcutaneously injected glucagonlike peptide–1 receptor agonist (GLP-1RA) with demonstrated cardiovascular benefit as a second glucose-lowering agent (J Am Coll Cardiol. 2018 Dec 18;72[24]:3200-23). The DECLARE-TIMI 58 subanalysis bolsters that guidance and shows, more specifically, that the cardioprotective benefits of dapagliflozin are significantly greater in T2D with prior MI than in those with known ASCVD but no history of MI, the cardiologist explained.
The main results of DECLARE-TIMI 58 have been published. The trial included 17,160 patients with T2D, 6,974 of whom had established ASCVD, while the remainder had multiple ASCVD risk factors. Participants were randomized to oral dapagliflozin at 10 mg/day or placebo on top of background guideline-directed medical therapy and followed for a median of 4.2 years. The dapagliflozin group had a 27% reduction in heart failure hospitalizations, compared with controls, but there were no significant between-group differences in the composite MACE (major adverse cardiovascular events) endpoint of cardiovascular death, MI, or ischemic stroke (N Engl J Med. 2019 Jan 24;380[4]:347-57).
Dr. Furtado presented a prespecified subgroup analysis focused on the 3,584 study participants with prior MI. Their rate of the composite endpoint of cardiovascular death, MI, or ischemic stroke was 15.2%, compared with 17.8% in controls, for a statistically significant and clinically meaningful 16% relative risk reduction and an absolute 2.6% risk reduction. Of note, the risk of recurrent MI was reduced by 22%. In contrast, there was no difference in MACE risk between the dapagliflozin and placebo groups in patients with no prior MI, even if they had established ASCVD.
A noteworthy finding was that the benefit in MACE reduction in patients with prior MI was greater in those who were closer in time to their most recent MI at enrollment in the study. Those who started on dapagliflozin within 12 months of their last MI had a 34% relative risk reduction in MACE, compared with placebo, while those who enrolled 12-24 months after their last MI enjoyed an even more robust 58% relative risk reduction on dapagliflozin. In contrast, patients who enrolled 24-36 months post MI had only a 17% relative risk reduction, and the 2,400 patients who enrolled more than 36 months after their last MI had a subsequent MACE rate no different from controls.
Session cochair Nadia R. Sutton, MD, a cardiologist at the University of Michigan, Ann Arbor, commented that she found this time-dependent benefit fascinating.
“Do you think this has anything to do with the escalation of other therapies, such as Plavix [clopidogrel]?” she asked.
Dr. Furtado replied, “This is a finding that we should interpret with a little bit of caution.” For one thing, patients in the acute phase of an MI were excluded from participation in the trial, so nothing is known about how they would fare on dapagliflozin. For another, only 844 of the 3,584 patients with T2D and prior MI had their most recent MI within 24 months of enrollment, so even though the differences were statistically significant, the confidence intervals are fairly wide.
That being said, the finding does underscore a truism about cardiovascular prevention: The higher the risk, the greater the benefit of effective therapy – and, of course, the initial months following an MI are a particularly high-risk period.
“Also, this finding is a caution to the clinicians to avoid clinical inertia in prescribing an SGLT-2i, because maybe you can get an early benefit if you prescribe the drug closer to the acute phase and not wait until some months after the patient has tried diet and exercise and so on,” he added.
With regard to the second coprimary endpoint comprising cardiovascular death or heart failure hospitalization in T2D patients with prior MI, the rate in the dapagliflozin group was 8.6%, a 19% relative risk reduction and absolute risk reduction of 1.9%, compared with the 10.5% rate with placebo.
Dr. Furtado noted that the main results of DECLARE TIMI-58 are consistent with a recent systematic review and meta-analysis of three randomized cardiovascular outcome trials of SGLT-2is for primary and secondary prevention of cardiovascular and renal outcomes in T2D. The meta-analysis included more than 34,000 patients, roughly half drawn from DECLARE-TIMI 58. SGLT-2i therapy reduced MACE by 14% in patients with established ASCVD but not significantly in those without. And the agents reduced the risk of cardiovascular death/heart failure hospitalization by 23%, regardless of whether or not patients had known ASCVD or a history of heart failure (Lancet. 2019 Jan 5;393[10166]:31-9).
Dr. Furtado reported serving as a consultant to AstraZeneca, which funded DECLARE-TIMI 58, as well as receiving direct institutional research grants from half a dozen other pharmaceutical companies.
Simultaneous with his presentation at ACC 2019 in New Orleans, the subanalysis results were published online (Circulation. 2019 Mar 18. doi: 10.1161/CIRCULATIONAHA.119.039996. [Epub ahead of print]).
NEW ORLEANS – Dapagliflozin markedly reduces the risks of both major adverse cardiovascular events and heart failure hospitalization in the subset of patients with type 2 diabetes (T2D) and prior MI, according to a new subanalysis of the landmark DECLARE-TIMI 58 trial.
The effectiveness of dapagliflozin (Farxiga), an oral sodium glucose transporter-2 inhibitor (SGLT-2i), was particularly striking with regard to prevention of recurrent MI, Remo H.M. Furtado, MD, reported at the annual meeting of the American College of Cardiology.
“The 22% relative risk reduction in recurrent MI with dapagliflozin is comparable to other established therapies used in secondary prevention after MI, like DAPT [dual-antiplatelet therapy] and intensive lipid lowering,” observed Dr. Furtado of Brigham and Women’s Hospital, Boston.
Not bad for a drug developed as a glucose-lowering agent.
The new DECLARE-TIMI 58 subanalysis provides information that’s relevant to ACC guidelines issued in late 2018. The guidelines, in the form of an “expert consensus decision pathway,” emphatically recommend that all patients with T2D and known atherosclerotic cardiovascular disease (ASCVD) should have metformin as their first-line glucose-lowering agent, while at the same time giving serious consideration to the addition of either an oral SGLT-2i or a subcutaneously injected glucagonlike peptide–1 receptor agonist (GLP-1RA) with demonstrated cardiovascular benefit as a second glucose-lowering agent (J Am Coll Cardiol. 2018 Dec 18;72[24]:3200-23). The DECLARE-TIMI 58 subanalysis bolsters that guidance and shows, more specifically, that the cardioprotective benefits of dapagliflozin are significantly greater in T2D with prior MI than in those with known ASCVD but no history of MI, the cardiologist explained.
The main results of DECLARE-TIMI 58 have been published. The trial included 17,160 patients with T2D, 6,974 of whom had established ASCVD, while the remainder had multiple ASCVD risk factors. Participants were randomized to oral dapagliflozin at 10 mg/day or placebo on top of background guideline-directed medical therapy and followed for a median of 4.2 years. The dapagliflozin group had a 27% reduction in heart failure hospitalizations, compared with controls, but there were no significant between-group differences in the composite MACE (major adverse cardiovascular events) endpoint of cardiovascular death, MI, or ischemic stroke (N Engl J Med. 2019 Jan 24;380[4]:347-57).
Dr. Furtado presented a prespecified subgroup analysis focused on the 3,584 study participants with prior MI. Their rate of the composite endpoint of cardiovascular death, MI, or ischemic stroke was 15.2%, compared with 17.8% in controls, for a statistically significant and clinically meaningful 16% relative risk reduction and an absolute 2.6% risk reduction. Of note, the risk of recurrent MI was reduced by 22%. In contrast, there was no difference in MACE risk between the dapagliflozin and placebo groups in patients with no prior MI, even if they had established ASCVD.
A noteworthy finding was that the benefit in MACE reduction in patients with prior MI was greater in those who were closer in time to their most recent MI at enrollment in the study. Those who started on dapagliflozin within 12 months of their last MI had a 34% relative risk reduction in MACE, compared with placebo, while those who enrolled 12-24 months after their last MI enjoyed an even more robust 58% relative risk reduction on dapagliflozin. In contrast, patients who enrolled 24-36 months post MI had only a 17% relative risk reduction, and the 2,400 patients who enrolled more than 36 months after their last MI had a subsequent MACE rate no different from controls.
Session cochair Nadia R. Sutton, MD, a cardiologist at the University of Michigan, Ann Arbor, commented that she found this time-dependent benefit fascinating.
“Do you think this has anything to do with the escalation of other therapies, such as Plavix [clopidogrel]?” she asked.
Dr. Furtado replied, “This is a finding that we should interpret with a little bit of caution.” For one thing, patients in the acute phase of an MI were excluded from participation in the trial, so nothing is known about how they would fare on dapagliflozin. For another, only 844 of the 3,584 patients with T2D and prior MI had their most recent MI within 24 months of enrollment, so even though the differences were statistically significant, the confidence intervals are fairly wide.
That being said, the finding does underscore a truism about cardiovascular prevention: The higher the risk, the greater the benefit of effective therapy – and, of course, the initial months following an MI are a particularly high-risk period.
“Also, this finding is a caution to the clinicians to avoid clinical inertia in prescribing an SGLT-2i, because maybe you can get an early benefit if you prescribe the drug closer to the acute phase and not wait until some months after the patient has tried diet and exercise and so on,” he added.
With regard to the second coprimary endpoint comprising cardiovascular death or heart failure hospitalization in T2D patients with prior MI, the rate in the dapagliflozin group was 8.6%, a 19% relative risk reduction and absolute risk reduction of 1.9%, compared with the 10.5% rate with placebo.
Dr. Furtado noted that the main results of DECLARE TIMI-58 are consistent with a recent systematic review and meta-analysis of three randomized cardiovascular outcome trials of SGLT-2is for primary and secondary prevention of cardiovascular and renal outcomes in T2D. The meta-analysis included more than 34,000 patients, roughly half drawn from DECLARE-TIMI 58. SGLT-2i therapy reduced MACE by 14% in patients with established ASCVD but not significantly in those without. And the agents reduced the risk of cardiovascular death/heart failure hospitalization by 23%, regardless of whether or not patients had known ASCVD or a history of heart failure (Lancet. 2019 Jan 5;393[10166]:31-9).
Dr. Furtado reported serving as a consultant to AstraZeneca, which funded DECLARE-TIMI 58, as well as receiving direct institutional research grants from half a dozen other pharmaceutical companies.
Simultaneous with his presentation at ACC 2019 in New Orleans, the subanalysis results were published online (Circulation. 2019 Mar 18. doi: 10.1161/CIRCULATIONAHA.119.039996. [Epub ahead of print]).
NEW ORLEANS – Dapagliflozin markedly reduces the risks of both major adverse cardiovascular events and heart failure hospitalization in the subset of patients with type 2 diabetes (T2D) and prior MI, according to a new subanalysis of the landmark DECLARE-TIMI 58 trial.
The effectiveness of dapagliflozin (Farxiga), an oral sodium glucose transporter-2 inhibitor (SGLT-2i), was particularly striking with regard to prevention of recurrent MI, Remo H.M. Furtado, MD, reported at the annual meeting of the American College of Cardiology.
“The 22% relative risk reduction in recurrent MI with dapagliflozin is comparable to other established therapies used in secondary prevention after MI, like DAPT [dual-antiplatelet therapy] and intensive lipid lowering,” observed Dr. Furtado of Brigham and Women’s Hospital, Boston.
Not bad for a drug developed as a glucose-lowering agent.
The new DECLARE-TIMI 58 subanalysis provides information that’s relevant to ACC guidelines issued in late 2018. The guidelines, in the form of an “expert consensus decision pathway,” emphatically recommend that all patients with T2D and known atherosclerotic cardiovascular disease (ASCVD) should have metformin as their first-line glucose-lowering agent, while at the same time giving serious consideration to the addition of either an oral SGLT-2i or a subcutaneously injected glucagonlike peptide–1 receptor agonist (GLP-1RA) with demonstrated cardiovascular benefit as a second glucose-lowering agent (J Am Coll Cardiol. 2018 Dec 18;72[24]:3200-23). The DECLARE-TIMI 58 subanalysis bolsters that guidance and shows, more specifically, that the cardioprotective benefits of dapagliflozin are significantly greater in T2D with prior MI than in those with known ASCVD but no history of MI, the cardiologist explained.
The main results of DECLARE-TIMI 58 have been published. The trial included 17,160 patients with T2D, 6,974 of whom had established ASCVD, while the remainder had multiple ASCVD risk factors. Participants were randomized to oral dapagliflozin at 10 mg/day or placebo on top of background guideline-directed medical therapy and followed for a median of 4.2 years. The dapagliflozin group had a 27% reduction in heart failure hospitalizations, compared with controls, but there were no significant between-group differences in the composite MACE (major adverse cardiovascular events) endpoint of cardiovascular death, MI, or ischemic stroke (N Engl J Med. 2019 Jan 24;380[4]:347-57).
Dr. Furtado presented a prespecified subgroup analysis focused on the 3,584 study participants with prior MI. Their rate of the composite endpoint of cardiovascular death, MI, or ischemic stroke was 15.2%, compared with 17.8% in controls, for a statistically significant and clinically meaningful 16% relative risk reduction and an absolute 2.6% risk reduction. Of note, the risk of recurrent MI was reduced by 22%. In contrast, there was no difference in MACE risk between the dapagliflozin and placebo groups in patients with no prior MI, even if they had established ASCVD.
A noteworthy finding was that the benefit in MACE reduction in patients with prior MI was greater in those who were closer in time to their most recent MI at enrollment in the study. Those who started on dapagliflozin within 12 months of their last MI had a 34% relative risk reduction in MACE, compared with placebo, while those who enrolled 12-24 months after their last MI enjoyed an even more robust 58% relative risk reduction on dapagliflozin. In contrast, patients who enrolled 24-36 months post MI had only a 17% relative risk reduction, and the 2,400 patients who enrolled more than 36 months after their last MI had a subsequent MACE rate no different from controls.
Session cochair Nadia R. Sutton, MD, a cardiologist at the University of Michigan, Ann Arbor, commented that she found this time-dependent benefit fascinating.
“Do you think this has anything to do with the escalation of other therapies, such as Plavix [clopidogrel]?” she asked.
Dr. Furtado replied, “This is a finding that we should interpret with a little bit of caution.” For one thing, patients in the acute phase of an MI were excluded from participation in the trial, so nothing is known about how they would fare on dapagliflozin. For another, only 844 of the 3,584 patients with T2D and prior MI had their most recent MI within 24 months of enrollment, so even though the differences were statistically significant, the confidence intervals are fairly wide.
That being said, the finding does underscore a truism about cardiovascular prevention: The higher the risk, the greater the benefit of effective therapy – and, of course, the initial months following an MI are a particularly high-risk period.
“Also, this finding is a caution to the clinicians to avoid clinical inertia in prescribing an SGLT-2i, because maybe you can get an early benefit if you prescribe the drug closer to the acute phase and not wait until some months after the patient has tried diet and exercise and so on,” he added.
With regard to the second coprimary endpoint comprising cardiovascular death or heart failure hospitalization in T2D patients with prior MI, the rate in the dapagliflozin group was 8.6%, a 19% relative risk reduction and absolute risk reduction of 1.9%, compared with the 10.5% rate with placebo.
Dr. Furtado noted that the main results of DECLARE TIMI-58 are consistent with a recent systematic review and meta-analysis of three randomized cardiovascular outcome trials of SGLT-2is for primary and secondary prevention of cardiovascular and renal outcomes in T2D. The meta-analysis included more than 34,000 patients, roughly half drawn from DECLARE-TIMI 58. SGLT-2i therapy reduced MACE by 14% in patients with established ASCVD but not significantly in those without. And the agents reduced the risk of cardiovascular death/heart failure hospitalization by 23%, regardless of whether or not patients had known ASCVD or a history of heart failure (Lancet. 2019 Jan 5;393[10166]:31-9).
Dr. Furtado reported serving as a consultant to AstraZeneca, which funded DECLARE-TIMI 58, as well as receiving direct institutional research grants from half a dozen other pharmaceutical companies.
Simultaneous with his presentation at ACC 2019 in New Orleans, the subanalysis results were published online (Circulation. 2019 Mar 18. doi: 10.1161/CIRCULATIONAHA.119.039996. [Epub ahead of print]).
REPORTING FROM ACC 19
Alirocumab reduces both type 1 and 2 MIs
NEW ORLEANS – Lowering LDL cholesterol with alirocumab to levels below what’s achievable with intensive statin therapy appears to be an important strategy for prevention of type 1 MI – and perhaps even more impressively, type 2 MI – following acute coronary syndrome, Harvey D. White, MD, reported at the annual meeting of the American College of Cardiology.
What’s so important about the 23% reduction in risk of type 2 MI achieved with alirocumab (Praluent) relative to placebo documented in a prespecified secondary analysis from the ODYSSEY Outcomes trial?
“For type 2 MI, this is the first data indicating that a lipid-lowering therapy can attenuate risk,” according to Dr. White, a cardiologist at Auckland (N.Z.) City Hospital.
The ODYSSEY Outcomes trial compared the proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor alirocumab to placebo in 18,924 patients with a recent acute coronary syndrome and an LDL cholesterol level of at least 70 mg/dL despite intensive statin therapy. At 4 months, the PCSK9 inhibitor plus statin therapy reduced participants’ mean LDL by 54%, from 93 to 48 mg/dL, while the LDL level actually drifted upward in the control group on placebo plus statin therapy. In the previously reported primary results of this landmark randomized clinical trial, alirocumab on top of background intensive statin therapy reduced the primary composite endpoint of death attributable to coronary heart disease, ischemic stroke, MI, or unstable angina requiring hospitalization by 15%, compared with controls (N Engl J Med. 2018 Nov 29;379[22]:2097-107).
During a median 2.8 years of prospective follow-up, there were 1,860 new MIs in study participants. A blinded clinical events committee evaluated the myocardial infarctions according to the Third Universal Definition and determined 66% were type 1 MIs, 21% were type 2, and 13% were type 4, with lesser numbers of types 3 and 5 MI.
Alirocumab reduced the risk of any MI by 15%, with a 6.8% incidence during follow-up, compared with 7.9% on placebo. The risk of type 1 MI, typically attributable to plaque rupture, was reduced by 13%, with an incidence of 4.9% with alirocumab and 5.6% with placebo. The risk reduction conferred by the PCSK9 inhibitor was even more robust for type 2 MI, the type caused by an oxygen supply/demand imbalance most commonly attributable to coronary artery spasm, coronary embolism, arrhythmias, anemia, hypertension, or hypotension: a 23% relative risk reduction as reflected in a 1.3% incidence in the alirocumab group, compared with a 1.7% rate in controls.
In contrast, alirocumab had no impact on the incidence of type 4 MI, a category that includes peri–percutaneous coronary intervention MIs as well as those attributable to stent thrombosis or restenosis.
The beneficial effect of alirocumab on MI risk mostly involved a reduction in larger MIs – those with a biomarker peak greater than three times the upper limit of normal.
An emphatic difference was found in the risk of death following type 1 as opposed to type 2 MI. Patients who experienced a type 1 MI during the study had an 11.9% mortality rate during an average of 1.6 years of post-MI follow-up, as compared with a 25.4% rate during 1.3 years of follow-up after a type 2 MI.
Alirocumab significantly reduced the risk of mortality following a type 1 MI, with a 10.2% rate as compared to 13.4% with placebo; that’s a 31% relative risk reduction. Yet the PCSK9 inhibitor had no impact on the risk of death after a type 2 MI: 24.8% in the alirocumab group and 25.9% in controls.
Asked for his thoughts as to possible explanatory mechanistic pathways for the benefit of alirocumab in preventing type 2 MI, Dr. White noted that in a Scottish study of the PCSK9 inhibitor evolocumab (Repatha), over the course of 72 months the drug appeared to reduce atherosclerotic progression and induce plaque stabilization and perhaps even regression.
“I think that’s the probable mechanism. And we also know that statins improve endothelial function,” he said.
He reported receiving research grant support and consultant fees from Sanofi and Regeneron, funders of the ODYSSEY Outcomes trial.
NEW ORLEANS – Lowering LDL cholesterol with alirocumab to levels below what’s achievable with intensive statin therapy appears to be an important strategy for prevention of type 1 MI – and perhaps even more impressively, type 2 MI – following acute coronary syndrome, Harvey D. White, MD, reported at the annual meeting of the American College of Cardiology.
What’s so important about the 23% reduction in risk of type 2 MI achieved with alirocumab (Praluent) relative to placebo documented in a prespecified secondary analysis from the ODYSSEY Outcomes trial?
“For type 2 MI, this is the first data indicating that a lipid-lowering therapy can attenuate risk,” according to Dr. White, a cardiologist at Auckland (N.Z.) City Hospital.
The ODYSSEY Outcomes trial compared the proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor alirocumab to placebo in 18,924 patients with a recent acute coronary syndrome and an LDL cholesterol level of at least 70 mg/dL despite intensive statin therapy. At 4 months, the PCSK9 inhibitor plus statin therapy reduced participants’ mean LDL by 54%, from 93 to 48 mg/dL, while the LDL level actually drifted upward in the control group on placebo plus statin therapy. In the previously reported primary results of this landmark randomized clinical trial, alirocumab on top of background intensive statin therapy reduced the primary composite endpoint of death attributable to coronary heart disease, ischemic stroke, MI, or unstable angina requiring hospitalization by 15%, compared with controls (N Engl J Med. 2018 Nov 29;379[22]:2097-107).
During a median 2.8 years of prospective follow-up, there were 1,860 new MIs in study participants. A blinded clinical events committee evaluated the myocardial infarctions according to the Third Universal Definition and determined 66% were type 1 MIs, 21% were type 2, and 13% were type 4, with lesser numbers of types 3 and 5 MI.
Alirocumab reduced the risk of any MI by 15%, with a 6.8% incidence during follow-up, compared with 7.9% on placebo. The risk of type 1 MI, typically attributable to plaque rupture, was reduced by 13%, with an incidence of 4.9% with alirocumab and 5.6% with placebo. The risk reduction conferred by the PCSK9 inhibitor was even more robust for type 2 MI, the type caused by an oxygen supply/demand imbalance most commonly attributable to coronary artery spasm, coronary embolism, arrhythmias, anemia, hypertension, or hypotension: a 23% relative risk reduction as reflected in a 1.3% incidence in the alirocumab group, compared with a 1.7% rate in controls.
In contrast, alirocumab had no impact on the incidence of type 4 MI, a category that includes peri–percutaneous coronary intervention MIs as well as those attributable to stent thrombosis or restenosis.
The beneficial effect of alirocumab on MI risk mostly involved a reduction in larger MIs – those with a biomarker peak greater than three times the upper limit of normal.
An emphatic difference was found in the risk of death following type 1 as opposed to type 2 MI. Patients who experienced a type 1 MI during the study had an 11.9% mortality rate during an average of 1.6 years of post-MI follow-up, as compared with a 25.4% rate during 1.3 years of follow-up after a type 2 MI.
Alirocumab significantly reduced the risk of mortality following a type 1 MI, with a 10.2% rate as compared to 13.4% with placebo; that’s a 31% relative risk reduction. Yet the PCSK9 inhibitor had no impact on the risk of death after a type 2 MI: 24.8% in the alirocumab group and 25.9% in controls.
Asked for his thoughts as to possible explanatory mechanistic pathways for the benefit of alirocumab in preventing type 2 MI, Dr. White noted that in a Scottish study of the PCSK9 inhibitor evolocumab (Repatha), over the course of 72 months the drug appeared to reduce atherosclerotic progression and induce plaque stabilization and perhaps even regression.
“I think that’s the probable mechanism. And we also know that statins improve endothelial function,” he said.
He reported receiving research grant support and consultant fees from Sanofi and Regeneron, funders of the ODYSSEY Outcomes trial.
NEW ORLEANS – Lowering LDL cholesterol with alirocumab to levels below what’s achievable with intensive statin therapy appears to be an important strategy for prevention of type 1 MI – and perhaps even more impressively, type 2 MI – following acute coronary syndrome, Harvey D. White, MD, reported at the annual meeting of the American College of Cardiology.
What’s so important about the 23% reduction in risk of type 2 MI achieved with alirocumab (Praluent) relative to placebo documented in a prespecified secondary analysis from the ODYSSEY Outcomes trial?
“For type 2 MI, this is the first data indicating that a lipid-lowering therapy can attenuate risk,” according to Dr. White, a cardiologist at Auckland (N.Z.) City Hospital.
The ODYSSEY Outcomes trial compared the proprotein convertase subtilisin/kexin type 9 (PCSK9) inhibitor alirocumab to placebo in 18,924 patients with a recent acute coronary syndrome and an LDL cholesterol level of at least 70 mg/dL despite intensive statin therapy. At 4 months, the PCSK9 inhibitor plus statin therapy reduced participants’ mean LDL by 54%, from 93 to 48 mg/dL, while the LDL level actually drifted upward in the control group on placebo plus statin therapy. In the previously reported primary results of this landmark randomized clinical trial, alirocumab on top of background intensive statin therapy reduced the primary composite endpoint of death attributable to coronary heart disease, ischemic stroke, MI, or unstable angina requiring hospitalization by 15%, compared with controls (N Engl J Med. 2018 Nov 29;379[22]:2097-107).
During a median 2.8 years of prospective follow-up, there were 1,860 new MIs in study participants. A blinded clinical events committee evaluated the myocardial infarctions according to the Third Universal Definition and determined 66% were type 1 MIs, 21% were type 2, and 13% were type 4, with lesser numbers of types 3 and 5 MI.
Alirocumab reduced the risk of any MI by 15%, with a 6.8% incidence during follow-up, compared with 7.9% on placebo. The risk of type 1 MI, typically attributable to plaque rupture, was reduced by 13%, with an incidence of 4.9% with alirocumab and 5.6% with placebo. The risk reduction conferred by the PCSK9 inhibitor was even more robust for type 2 MI, the type caused by an oxygen supply/demand imbalance most commonly attributable to coronary artery spasm, coronary embolism, arrhythmias, anemia, hypertension, or hypotension: a 23% relative risk reduction as reflected in a 1.3% incidence in the alirocumab group, compared with a 1.7% rate in controls.
In contrast, alirocumab had no impact on the incidence of type 4 MI, a category that includes peri–percutaneous coronary intervention MIs as well as those attributable to stent thrombosis or restenosis.
The beneficial effect of alirocumab on MI risk mostly involved a reduction in larger MIs – those with a biomarker peak greater than three times the upper limit of normal.
An emphatic difference was found in the risk of death following type 1 as opposed to type 2 MI. Patients who experienced a type 1 MI during the study had an 11.9% mortality rate during an average of 1.6 years of post-MI follow-up, as compared with a 25.4% rate during 1.3 years of follow-up after a type 2 MI.
Alirocumab significantly reduced the risk of mortality following a type 1 MI, with a 10.2% rate as compared to 13.4% with placebo; that’s a 31% relative risk reduction. Yet the PCSK9 inhibitor had no impact on the risk of death after a type 2 MI: 24.8% in the alirocumab group and 25.9% in controls.
Asked for his thoughts as to possible explanatory mechanistic pathways for the benefit of alirocumab in preventing type 2 MI, Dr. White noted that in a Scottish study of the PCSK9 inhibitor evolocumab (Repatha), over the course of 72 months the drug appeared to reduce atherosclerotic progression and induce plaque stabilization and perhaps even regression.
“I think that’s the probable mechanism. And we also know that statins improve endothelial function,” he said.
He reported receiving research grant support and consultant fees from Sanofi and Regeneron, funders of the ODYSSEY Outcomes trial.
REPORTING FROM ACC 19
Look for alcohol septal ablation in the next HOCM guideline
SNOWMASS, COLO. – Recent data on long-term outcomes of alcohol septal ablation for hypertrophic obstructive cardiomyopathy are “quite favorable” and will be considered in the deliberations of the task force charged with revising the 2011 American College of Cardiology/American Heart Association guidelines.
Paul Sorajja, MD, a member of the task force and director of the Center of Valve and Structural Heart Disease at the Minneapolis Heart Institute, explained that the 2011 ACC/AHA guidelines on hypertrophic cardiomyopathy took an appropriately cautious stance regarding alcohol septal ablation (ASA) in light of a 2010 Dutch report warning of an increased risk of sudden cardiac death following the procedure (Circ Heart Fail. 2010 May;3[3]:362-9) and a dearth of evidence to the contrary.
The 2011 guidelines recommend surgical myectomy performed in an experienced center as the class I treatment of choice for patients with severely symptomatic, drug-refractory hypertrophic obstructive cardiomyopathy (HOCM). ASA gets a class IIa recommendation for patients at high surgical risk, and is class III – meaning don’t do it – for patients under age 40 years if myectomy is a viable option (J Am Coll Cardiol. 2011 Dec 13;58[25]:e212-60), Dr. Sorajja noted at the Annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.
However, the cautionary Dutch study that influenced the 2011 guidelines is considered controversial, he explained. It was small – just 91 patients – and the operators used twice the normal volume of alcohol, with a resultant much larger, potentially arrhythmogenic myocardial ablation scar. So, many experts have been eagerly awaiting additional long-term studies. And that long-sought data has recently been piling up. Since the 2011 guidelines, six long-term studies have been published, including one led by Dr. Sorajja (Circulation. 2012 Nov 13;126[20]:2374-80). The results have been consistently favorable, with 5-year survival rates of 87%-96%, in line with rates in the general population.
The largest of these studies included 1,197 patients who underwent ASA at seven centers in four European countries. The 30-day mortality and pacemaker implantation rates were significantly lower in patients aged up to 50 years, compared with those aged 65 and up. The annual mortality rate during a mean follow-up of 5.4 years was 1% in patients age 50 years and younger, 2.1% in those aged 51-64, and 5.1% in the oldest group. Arrhythmic events occurred at a rate of about 1% per year in all three age groups. And 95% of patients in the youngest group were in New York Heart Association class I or II at last follow-up (JACC Cardiovasc Interv. 2017 Jun 12;10[11]:1134-43).
In an accompanying editorial, Michael A. Fifer, MD, of Massachusetts General Hospital, Boston, commented that “high-volume surgical myectomy centers are few and far between” and there is “a clear inverse relation between [surgical] procedure volume and outcomes.”
The study “provides the most robust data to date regarding the outcomes of ASA in younger patients, precisely the type of data that were missing at the time of writing of the ACCF/AHA and European Society of Cardiology guidelines. Given the favorable outcomes of ASA in this age group, and the unavailability of high-volume myectomy programs in many geographic regions, the time has come to liberalize the indication for ASA in younger patients,” declared Dr. Fifer (JACC Cardiovasc Interv. 2017 Jun 12;10[11]:1144-6).
The second-largest long-term study of ASA was a recent report on 952 German patients with a minimum 6-year follow-up. The estimated 5-, 10-, and 15-year survival rates were 95.8%, 88.3%, and 79.7%, respectively. Estimated survival free of cardiac events was 98.9% at 5 years, 97.0% at 10 years, and 96.5% at 15 years. About 5% of patients received an implantable cardioverter defibrillator.
The investigators concluded, “In this study, PTSMA [percutaneous transluminal septal myocardial ablation] could be proofed as a safe procedure with ongoing symptomatic improvement and excellent long-term survival. Therefore, PTSMA is a reasonable alternative to surgical myectomy in HOCM.” (J Am Coll Cardiol. 2018 Dec 18;72[24]:3087-94) It’s way too early in the ACC/AHA guideline revision process to say what the new recommendations will be, according to Dr. Sorajja.
One unsettled issue, in his view, is whether ASA outcomes are significantly better in high-volume centers. A study of all 11,248 patients who underwent surgical myectomy of ASA during 2003-2011 in a large U.S. inpatient database concluded that undergoing surgical myectomy in a bottom-tertile-volume hospital was independently associated with an adjusted 210% increased risk of inpatient all-cause mortality and a 280% increased risk of bleeding, but that being in the lowest tertile of ASA hospital volume wasn’t independently associated with increased risk after adjustment for potential confounders (JAMA Cardiol. 2016 Jun 1;1:[3]:324-32).
However, Dr. Sorajja indicated he didn’t find the statistically adjusted results in the ASA cohort persuasive.
“I will tell you that the favorable results in the long-term studies came from hospitals in the highest-volume tertile,” the cardiologist said.
At present, he considers surgical myectomy the gold standard therapy. With well-selected patients for ASA – that is, those for whom imaging has identified an appropriate septal artery for delivery of the alcohol, along with no more than 24 mm of septal hypertrophy so the alcohol dose can be limited to a maximum of 20-25 cc – it’s reasonable to expect gradient relief in more than 90% of patients, surgical-like results with optimal relief of left ventricular outflow tract obstruction and a residual gradient of less than 10 mm Hg in about 75%, and a procedural mortality of about 1%, he said.
Dr. Sorajja reported receiving research funding from Abbott Structural, Boston Scientific, Edwards Lifesciences, and Medtronic, and serving as a consultant to those companies and several others.
SNOWMASS, COLO. – Recent data on long-term outcomes of alcohol septal ablation for hypertrophic obstructive cardiomyopathy are “quite favorable” and will be considered in the deliberations of the task force charged with revising the 2011 American College of Cardiology/American Heart Association guidelines.
Paul Sorajja, MD, a member of the task force and director of the Center of Valve and Structural Heart Disease at the Minneapolis Heart Institute, explained that the 2011 ACC/AHA guidelines on hypertrophic cardiomyopathy took an appropriately cautious stance regarding alcohol septal ablation (ASA) in light of a 2010 Dutch report warning of an increased risk of sudden cardiac death following the procedure (Circ Heart Fail. 2010 May;3[3]:362-9) and a dearth of evidence to the contrary.
The 2011 guidelines recommend surgical myectomy performed in an experienced center as the class I treatment of choice for patients with severely symptomatic, drug-refractory hypertrophic obstructive cardiomyopathy (HOCM). ASA gets a class IIa recommendation for patients at high surgical risk, and is class III – meaning don’t do it – for patients under age 40 years if myectomy is a viable option (J Am Coll Cardiol. 2011 Dec 13;58[25]:e212-60), Dr. Sorajja noted at the Annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.
However, the cautionary Dutch study that influenced the 2011 guidelines is considered controversial, he explained. It was small – just 91 patients – and the operators used twice the normal volume of alcohol, with a resultant much larger, potentially arrhythmogenic myocardial ablation scar. So, many experts have been eagerly awaiting additional long-term studies. And that long-sought data has recently been piling up. Since the 2011 guidelines, six long-term studies have been published, including one led by Dr. Sorajja (Circulation. 2012 Nov 13;126[20]:2374-80). The results have been consistently favorable, with 5-year survival rates of 87%-96%, in line with rates in the general population.
The largest of these studies included 1,197 patients who underwent ASA at seven centers in four European countries. The 30-day mortality and pacemaker implantation rates were significantly lower in patients aged up to 50 years, compared with those aged 65 and up. The annual mortality rate during a mean follow-up of 5.4 years was 1% in patients age 50 years and younger, 2.1% in those aged 51-64, and 5.1% in the oldest group. Arrhythmic events occurred at a rate of about 1% per year in all three age groups. And 95% of patients in the youngest group were in New York Heart Association class I or II at last follow-up (JACC Cardiovasc Interv. 2017 Jun 12;10[11]:1134-43).
In an accompanying editorial, Michael A. Fifer, MD, of Massachusetts General Hospital, Boston, commented that “high-volume surgical myectomy centers are few and far between” and there is “a clear inverse relation between [surgical] procedure volume and outcomes.”
The study “provides the most robust data to date regarding the outcomes of ASA in younger patients, precisely the type of data that were missing at the time of writing of the ACCF/AHA and European Society of Cardiology guidelines. Given the favorable outcomes of ASA in this age group, and the unavailability of high-volume myectomy programs in many geographic regions, the time has come to liberalize the indication for ASA in younger patients,” declared Dr. Fifer (JACC Cardiovasc Interv. 2017 Jun 12;10[11]:1144-6).
The second-largest long-term study of ASA was a recent report on 952 German patients with a minimum 6-year follow-up. The estimated 5-, 10-, and 15-year survival rates were 95.8%, 88.3%, and 79.7%, respectively. Estimated survival free of cardiac events was 98.9% at 5 years, 97.0% at 10 years, and 96.5% at 15 years. About 5% of patients received an implantable cardioverter defibrillator.
The investigators concluded, “In this study, PTSMA [percutaneous transluminal septal myocardial ablation] could be proofed as a safe procedure with ongoing symptomatic improvement and excellent long-term survival. Therefore, PTSMA is a reasonable alternative to surgical myectomy in HOCM.” (J Am Coll Cardiol. 2018 Dec 18;72[24]:3087-94) It’s way too early in the ACC/AHA guideline revision process to say what the new recommendations will be, according to Dr. Sorajja.
One unsettled issue, in his view, is whether ASA outcomes are significantly better in high-volume centers. A study of all 11,248 patients who underwent surgical myectomy of ASA during 2003-2011 in a large U.S. inpatient database concluded that undergoing surgical myectomy in a bottom-tertile-volume hospital was independently associated with an adjusted 210% increased risk of inpatient all-cause mortality and a 280% increased risk of bleeding, but that being in the lowest tertile of ASA hospital volume wasn’t independently associated with increased risk after adjustment for potential confounders (JAMA Cardiol. 2016 Jun 1;1:[3]:324-32).
However, Dr. Sorajja indicated he didn’t find the statistically adjusted results in the ASA cohort persuasive.
“I will tell you that the favorable results in the long-term studies came from hospitals in the highest-volume tertile,” the cardiologist said.
At present, he considers surgical myectomy the gold standard therapy. With well-selected patients for ASA – that is, those for whom imaging has identified an appropriate septal artery for delivery of the alcohol, along with no more than 24 mm of septal hypertrophy so the alcohol dose can be limited to a maximum of 20-25 cc – it’s reasonable to expect gradient relief in more than 90% of patients, surgical-like results with optimal relief of left ventricular outflow tract obstruction and a residual gradient of less than 10 mm Hg in about 75%, and a procedural mortality of about 1%, he said.
Dr. Sorajja reported receiving research funding from Abbott Structural, Boston Scientific, Edwards Lifesciences, and Medtronic, and serving as a consultant to those companies and several others.
SNOWMASS, COLO. – Recent data on long-term outcomes of alcohol septal ablation for hypertrophic obstructive cardiomyopathy are “quite favorable” and will be considered in the deliberations of the task force charged with revising the 2011 American College of Cardiology/American Heart Association guidelines.
Paul Sorajja, MD, a member of the task force and director of the Center of Valve and Structural Heart Disease at the Minneapolis Heart Institute, explained that the 2011 ACC/AHA guidelines on hypertrophic cardiomyopathy took an appropriately cautious stance regarding alcohol septal ablation (ASA) in light of a 2010 Dutch report warning of an increased risk of sudden cardiac death following the procedure (Circ Heart Fail. 2010 May;3[3]:362-9) and a dearth of evidence to the contrary.
The 2011 guidelines recommend surgical myectomy performed in an experienced center as the class I treatment of choice for patients with severely symptomatic, drug-refractory hypertrophic obstructive cardiomyopathy (HOCM). ASA gets a class IIa recommendation for patients at high surgical risk, and is class III – meaning don’t do it – for patients under age 40 years if myectomy is a viable option (J Am Coll Cardiol. 2011 Dec 13;58[25]:e212-60), Dr. Sorajja noted at the Annual Cardiovascular Conference at Snowmass sponsored by the American College of Cardiology.
However, the cautionary Dutch study that influenced the 2011 guidelines is considered controversial, he explained. It was small – just 91 patients – and the operators used twice the normal volume of alcohol, with a resultant much larger, potentially arrhythmogenic myocardial ablation scar. So, many experts have been eagerly awaiting additional long-term studies. And that long-sought data has recently been piling up. Since the 2011 guidelines, six long-term studies have been published, including one led by Dr. Sorajja (Circulation. 2012 Nov 13;126[20]:2374-80). The results have been consistently favorable, with 5-year survival rates of 87%-96%, in line with rates in the general population.
The largest of these studies included 1,197 patients who underwent ASA at seven centers in four European countries. The 30-day mortality and pacemaker implantation rates were significantly lower in patients aged up to 50 years, compared with those aged 65 and up. The annual mortality rate during a mean follow-up of 5.4 years was 1% in patients age 50 years and younger, 2.1% in those aged 51-64, and 5.1% in the oldest group. Arrhythmic events occurred at a rate of about 1% per year in all three age groups. And 95% of patients in the youngest group were in New York Heart Association class I or II at last follow-up (JACC Cardiovasc Interv. 2017 Jun 12;10[11]:1134-43).
In an accompanying editorial, Michael A. Fifer, MD, of Massachusetts General Hospital, Boston, commented that “high-volume surgical myectomy centers are few and far between” and there is “a clear inverse relation between [surgical] procedure volume and outcomes.”
The study “provides the most robust data to date regarding the outcomes of ASA in younger patients, precisely the type of data that were missing at the time of writing of the ACCF/AHA and European Society of Cardiology guidelines. Given the favorable outcomes of ASA in this age group, and the unavailability of high-volume myectomy programs in many geographic regions, the time has come to liberalize the indication for ASA in younger patients,” declared Dr. Fifer (JACC Cardiovasc Interv. 2017 Jun 12;10[11]:1144-6).
The second-largest long-term study of ASA was a recent report on 952 German patients with a minimum 6-year follow-up. The estimated 5-, 10-, and 15-year survival rates were 95.8%, 88.3%, and 79.7%, respectively. Estimated survival free of cardiac events was 98.9% at 5 years, 97.0% at 10 years, and 96.5% at 15 years. About 5% of patients received an implantable cardioverter defibrillator.
The investigators concluded, “In this study, PTSMA [percutaneous transluminal septal myocardial ablation] could be proofed as a safe procedure with ongoing symptomatic improvement and excellent long-term survival. Therefore, PTSMA is a reasonable alternative to surgical myectomy in HOCM.” (J Am Coll Cardiol. 2018 Dec 18;72[24]:3087-94) It’s way too early in the ACC/AHA guideline revision process to say what the new recommendations will be, according to Dr. Sorajja.
One unsettled issue, in his view, is whether ASA outcomes are significantly better in high-volume centers. A study of all 11,248 patients who underwent surgical myectomy of ASA during 2003-2011 in a large U.S. inpatient database concluded that undergoing surgical myectomy in a bottom-tertile-volume hospital was independently associated with an adjusted 210% increased risk of inpatient all-cause mortality and a 280% increased risk of bleeding, but that being in the lowest tertile of ASA hospital volume wasn’t independently associated with increased risk after adjustment for potential confounders (JAMA Cardiol. 2016 Jun 1;1:[3]:324-32).
However, Dr. Sorajja indicated he didn’t find the statistically adjusted results in the ASA cohort persuasive.
“I will tell you that the favorable results in the long-term studies came from hospitals in the highest-volume tertile,” the cardiologist said.
At present, he considers surgical myectomy the gold standard therapy. With well-selected patients for ASA – that is, those for whom imaging has identified an appropriate septal artery for delivery of the alcohol, along with no more than 24 mm of septal hypertrophy so the alcohol dose can be limited to a maximum of 20-25 cc – it’s reasonable to expect gradient relief in more than 90% of patients, surgical-like results with optimal relief of left ventricular outflow tract obstruction and a residual gradient of less than 10 mm Hg in about 75%, and a procedural mortality of about 1%, he said.
Dr. Sorajja reported receiving research funding from Abbott Structural, Boston Scientific, Edwards Lifesciences, and Medtronic, and serving as a consultant to those companies and several others.
EXPERT ANALYSIS FROM ACC SNOWMASS 2019
Bronchiolitis is a feared complication of connective tissue disease
MAUI, HAWAII – who develop shortness of breath and cough or a precipitous drop in their forced expiratory volume on pulmonary function testing, Aryeh Fischer, MD, said at the 2019 Rheumatology Winter Clinical Symposium.
“This is an underappreciated – and I think among the most potentially devastating – of the lung diseases we as rheumatologists will encounter in our patients,” said Dr. Fischer, a rheumatologist at the University of Colorado at Denver, Aurora, with a special interest in autoimmune lung disease.
“If you’re seeing patients with rheumatoid arthritis, SLE, or Sjögren’s and they’ve got bad asthma they can’t get under control, you’ve got to think about bronchiolitis because I can tell you your lung doc quite often is not thinking about this,” he added.
Bronchiolitis involves inflammation, narrowing, or obliteration of the small airways. The diagnosis is often missed because of the false sense of reassurance provided by the normal chest x-ray and regular CT findings, which are a feature of the disease.
“This is really important: You have to get a high-resolution CT that includes expiratory images, because that’s the only way you’re going to be able to tell if your patient has small airways disease,” he explained. “You must, must, must do an expiratory CT.”
A normal expiratory CT image should be gray, since the lungs are empty. Air is black on CT, so large areas of black intermixed with gray on an expiratory CT – a finding known as mosaicism – indicate air trapping due to small airways disease, Dr. Fischer noted.
Surgical lung biopsy will yield a pathologic report documenting isolated constrictive, follicular, and/or lymphocytic bronchiolitis. However, the terminology can be confusing: What pathologists describe as constrictive bronchiolitis is called obliterative by pulmonologists and radiologists.
Pulmonary function testing shows an obstructive defect. The diffusing capacity of the lungs for carbon monoxide (DLCO) is fairly normal, the forced expiratory volume in 1 second (FEV1) is sharply reduced, and the forced vital capacity (FVC) is near normal, with a resultant abnormally low FEV1/FVC ratio. A patient with bronchiolitis may or may not have a response to bronchodilators.
“I tell you, I’ve seen a bunch of these patients. They typically have a precipitous drop in their FEV1 and then stay stable at a very low level of lung function without much opportunity for improvement,” Dr. Fischer said. “Stability equals success in these patients. It’s really unusual to see much improvement.”
In theory, patients with follicular or lymphocytic bronchiolitis have an ongoing inflammatory process that should be amenable to rheumatologic ministrations. But there is no convincing evidence of treatment efficacy to date. And in obliterative bronchiolitis, marked by airway scarring, there is no reason to think anti-inflammatory therapies should be helpful. Anecdotally, Dr. Fischer said, he has seen immunosuppression help patients with obliterative bronchiolitis.
“Actually, the only proven therapy is lung transplantation,” he said.
He recommended that his fellow rheumatologists periodically use office spirometry to check the FEV1 in their patients with rheumatoid arthritis, Sjögren’s, or SLE, the forms of connective tissue disease most often associated with bronchiolitis. Compared with all the other testing rheumatologists routinely order in their patients, having them blow into a tube is a simple enough matter.
“We really don’t have anything to impact the natural history, but I like the notion of not being surprised. What are you going to do with that [abnormal] FEV1 data? I have no idea. But maybe it’s better to know earlier,” he said.
Dr. Fischer reported having no financial conflicts of interest regarding his presentation.
MAUI, HAWAII – who develop shortness of breath and cough or a precipitous drop in their forced expiratory volume on pulmonary function testing, Aryeh Fischer, MD, said at the 2019 Rheumatology Winter Clinical Symposium.
“This is an underappreciated – and I think among the most potentially devastating – of the lung diseases we as rheumatologists will encounter in our patients,” said Dr. Fischer, a rheumatologist at the University of Colorado at Denver, Aurora, with a special interest in autoimmune lung disease.
“If you’re seeing patients with rheumatoid arthritis, SLE, or Sjögren’s and they’ve got bad asthma they can’t get under control, you’ve got to think about bronchiolitis because I can tell you your lung doc quite often is not thinking about this,” he added.
Bronchiolitis involves inflammation, narrowing, or obliteration of the small airways. The diagnosis is often missed because of the false sense of reassurance provided by the normal chest x-ray and regular CT findings, which are a feature of the disease.
“This is really important: You have to get a high-resolution CT that includes expiratory images, because that’s the only way you’re going to be able to tell if your patient has small airways disease,” he explained. “You must, must, must do an expiratory CT.”
A normal expiratory CT image should be gray, since the lungs are empty. Air is black on CT, so large areas of black intermixed with gray on an expiratory CT – a finding known as mosaicism – indicate air trapping due to small airways disease, Dr. Fischer noted.
Surgical lung biopsy will yield a pathologic report documenting isolated constrictive, follicular, and/or lymphocytic bronchiolitis. However, the terminology can be confusing: What pathologists describe as constrictive bronchiolitis is called obliterative by pulmonologists and radiologists.
Pulmonary function testing shows an obstructive defect. The diffusing capacity of the lungs for carbon monoxide (DLCO) is fairly normal, the forced expiratory volume in 1 second (FEV1) is sharply reduced, and the forced vital capacity (FVC) is near normal, with a resultant abnormally low FEV1/FVC ratio. A patient with bronchiolitis may or may not have a response to bronchodilators.
“I tell you, I’ve seen a bunch of these patients. They typically have a precipitous drop in their FEV1 and then stay stable at a very low level of lung function without much opportunity for improvement,” Dr. Fischer said. “Stability equals success in these patients. It’s really unusual to see much improvement.”
In theory, patients with follicular or lymphocytic bronchiolitis have an ongoing inflammatory process that should be amenable to rheumatologic ministrations. But there is no convincing evidence of treatment efficacy to date. And in obliterative bronchiolitis, marked by airway scarring, there is no reason to think anti-inflammatory therapies should be helpful. Anecdotally, Dr. Fischer said, he has seen immunosuppression help patients with obliterative bronchiolitis.
“Actually, the only proven therapy is lung transplantation,” he said.
He recommended that his fellow rheumatologists periodically use office spirometry to check the FEV1 in their patients with rheumatoid arthritis, Sjögren’s, or SLE, the forms of connective tissue disease most often associated with bronchiolitis. Compared with all the other testing rheumatologists routinely order in their patients, having them blow into a tube is a simple enough matter.
“We really don’t have anything to impact the natural history, but I like the notion of not being surprised. What are you going to do with that [abnormal] FEV1 data? I have no idea. But maybe it’s better to know earlier,” he said.
Dr. Fischer reported having no financial conflicts of interest regarding his presentation.
MAUI, HAWAII – who develop shortness of breath and cough or a precipitous drop in their forced expiratory volume on pulmonary function testing, Aryeh Fischer, MD, said at the 2019 Rheumatology Winter Clinical Symposium.
“This is an underappreciated – and I think among the most potentially devastating – of the lung diseases we as rheumatologists will encounter in our patients,” said Dr. Fischer, a rheumatologist at the University of Colorado at Denver, Aurora, with a special interest in autoimmune lung disease.
“If you’re seeing patients with rheumatoid arthritis, SLE, or Sjögren’s and they’ve got bad asthma they can’t get under control, you’ve got to think about bronchiolitis because I can tell you your lung doc quite often is not thinking about this,” he added.
Bronchiolitis involves inflammation, narrowing, or obliteration of the small airways. The diagnosis is often missed because of the false sense of reassurance provided by the normal chest x-ray and regular CT findings, which are a feature of the disease.
“This is really important: You have to get a high-resolution CT that includes expiratory images, because that’s the only way you’re going to be able to tell if your patient has small airways disease,” he explained. “You must, must, must do an expiratory CT.”
A normal expiratory CT image should be gray, since the lungs are empty. Air is black on CT, so large areas of black intermixed with gray on an expiratory CT – a finding known as mosaicism – indicate air trapping due to small airways disease, Dr. Fischer noted.
Surgical lung biopsy will yield a pathologic report documenting isolated constrictive, follicular, and/or lymphocytic bronchiolitis. However, the terminology can be confusing: What pathologists describe as constrictive bronchiolitis is called obliterative by pulmonologists and radiologists.
Pulmonary function testing shows an obstructive defect. The diffusing capacity of the lungs for carbon monoxide (DLCO) is fairly normal, the forced expiratory volume in 1 second (FEV1) is sharply reduced, and the forced vital capacity (FVC) is near normal, with a resultant abnormally low FEV1/FVC ratio. A patient with bronchiolitis may or may not have a response to bronchodilators.
“I tell you, I’ve seen a bunch of these patients. They typically have a precipitous drop in their FEV1 and then stay stable at a very low level of lung function without much opportunity for improvement,” Dr. Fischer said. “Stability equals success in these patients. It’s really unusual to see much improvement.”
In theory, patients with follicular or lymphocytic bronchiolitis have an ongoing inflammatory process that should be amenable to rheumatologic ministrations. But there is no convincing evidence of treatment efficacy to date. And in obliterative bronchiolitis, marked by airway scarring, there is no reason to think anti-inflammatory therapies should be helpful. Anecdotally, Dr. Fischer said, he has seen immunosuppression help patients with obliterative bronchiolitis.
“Actually, the only proven therapy is lung transplantation,” he said.
He recommended that his fellow rheumatologists periodically use office spirometry to check the FEV1 in their patients with rheumatoid arthritis, Sjögren’s, or SLE, the forms of connective tissue disease most often associated with bronchiolitis. Compared with all the other testing rheumatologists routinely order in their patients, having them blow into a tube is a simple enough matter.
“We really don’t have anything to impact the natural history, but I like the notion of not being surprised. What are you going to do with that [abnormal] FEV1 data? I have no idea. But maybe it’s better to know earlier,” he said.
Dr. Fischer reported having no financial conflicts of interest regarding his presentation.
REPORTING FROM RWCS 2019
Tackling the challenges of pediatric localized scleroderma
MAUI, HAWAII – One of the most important steps to take when a child has received a biopsy-confirmed diagnosis of localized scleroderma is to sit down with the family and explain the rationale for the aggressive therapies to come, Anne M. Stevens, MD, PhD, said at the 2019 Rheumatology Winter Clinical Symposium.
It can be a tough sell at first, especially when a child has only a small red streak on the nose and perhaps a subtle linear lesion on the forehead or scalp. But the family has to come to understand that this is a serious, chronic, progressive fibrotic disease.
“Talk about what a big impact this disease can have on growth of a limb and the normal life of a child because of the cosmetic appearance. Explain that the length of treatment course is based on the long-term outcomes and quality of life. This discussion is usually sufficient” to convince people to give their children “these pretty serious medications,” said Dr. Stevens, professor of pediatrics and head of the division of pediatric rheumatology at the University of Washington, Seattle.
“The treatment goal is to control inflammation and prevent damage in these patients, who we like to catch very early, when it’s a subtle lesion,” she added.
The biggest problem
The biggest contributors to poor quality of life in patients with juvenile localized scleroderma are the extracutaneous manifestations, which occur in up to 50% of cases. Joint pain occurs in roughly 20% of patients, joint contractures due to fibrosis of skin and/or tendons in 30%, and myalgia with or without myositis in 15%. Muscle atrophy due to the deep component of the scleroderma can occur. Moreover, growth problems – especially leg or arm length discrepancies – happen in about 20% of patients in prospective studies. These growth problems may not be obvious until a child enters a growth spurt, at which point there is a limited ability to achieve improvement. That’s why Dr. Stevens recommends that every child with localized scleroderma should get a full joint exam at every visit, with measurement and photos of lesions and recording of all erythematous, violaceous, and waxy-hued areas. And if there are lesions on the head, annual eye exams are warranted.
The prevalence of juvenile localized scleroderma in the United States is about 3 per 100,000, with a mean age of onset of 8.2 years. That makes it 100-fold more common than pediatric systemic sclerosis.
The treatment ladder
There are no Food and Drug Administration–approved medications for localized scleroderma in children. It’s all off label. That being said, there is strong consensus among members of the Childhood Arthritis and Rheumatology Research Alliance that the first-line therapy is methotrexate at 15 mg/m2 or a maximum of 20 mg/week plus intravenous corticosteroids weaned over the course of 3-6 months. This is the treatment regimen with the best supporting evidence of safety and efficacy, including a single Italian randomized, double-blind, placebo-controlled clinical trial (Arthritis Rheum. 2011 Jul;63[7]:1998-2006) and an accompanying long-term, open-label follow-up study (J Am Acad Dermatol. 2012 Dec;67[6]:1151-6).
All of the other treatments she uses for juvenile localized scleroderma – mycophenolate mofetil (CellCept), abatacept (Orencia), tocilizumab (Actemra), and occasionally others – are backed only by a smattering of small case series. However, given the serious potential trajectory of this disease, that modest evidence base has been sufficient for her to receive insurance coverage approval of these agents.
In the randomized trial of first-line methotrexate, 48 of 65 patients treated with methotrexate plus steroid (74%) were responders. And among those 48 responders, 35 (73%) maintained a clinical remission for a mean of 25 months off-drug, while another 13 (27%) were in clinical remission on methotrexate. Twenty-eight patients developed side effects that were generally mild; no one required treatment discontinuation. At the 5-year mark, after an average of an initial 2 years on methotrexate, half of the patients were in a sustained clinical remission, which Dr. Stevens deemed “pretty good” considering the well established and manageable safety profile of the drug.
If a patient fails to respond to methotrexate plus corticosteroids within a few months or later experiences disease progression, Dr. Stevens’ second-line therapy is mycophenolate mofetil in conjunction with corticosteroids. Its use in arresting juvenile localized scleroderma is supported by two favorable published case series, the largest of which includes 10 patients (Rheumatology [Oxford]. 2009 Nov;48[11]:1410-3).
Dr. Stevens’ third-line therapy is intravenous abatacept at 10 mg/kg monthly along with intravenous methylprednisolone at 500 mg/week. There are five published case series, the most recent and largest of which included 13 adult patients, two of whom had en coup de sabre lesions (Acta Derm Venereol. 2018 Apr 16;98[4]:465-6). The biologic also shows promise in patients with advanced severe disease with deep tissue involvement (Semin Arthritis Rheum. 2017 Jun;46[6]:775-81). And abatacept has a plausible mechanism of action in localized scleroderma: French investigators have shown it induces regression of skin fibrosis in a mouse model of the disease (Ann Rheum Dis. 2016 Dec;75[12]:2142-9).
Her fourth-line strategy is the anti-interleukin-6 agent tocilizumab, again in conjunction with corticosteroids. In a translational study, tocilizumab has been shown to normalize dermal fibroblasts and collagen in patients with systemic sclerosis (Ann Rheum Dis. 2018 Sep;77[9]:1362-71). And there have been two promising small retrospective case series as well. A more definitive clinical trial is planned.
Dr. Stevens said that when starting a biologic agent in a child with localized scleroderma, she routinely adds methotrexate until the disease is under control.
Drugs supported by case reports and worth considering on an individual basis as a last resort are hydroxychloroquine, azathioprine, cyclosporine, and imatinib mesylate (Gleevec).
For mild, superficial lesions that don’t cross joints, ultraviolet light A phototherapy is a therapeutic option. It displayed significant benefit in a systematic review and meta-analysis of 19 studies comparing it to methotrexate, although the results with methotrexate were deemed superior (Semin Arthritis Rheum. 2018 Dec;48[3]:495-503).
The pros and cons of getting a baseline brain MRI
Children with localized scleroderma have increased rates of severe headache, peripheral neuropathy, complex partial seizures, and stroke. So it had been Dr. Stevens’ routine practice to obtain an initial brain MRI at the time of diagnosis. Of late, though, she has reconsidered that practice.
“The problem is that some patients with abnormal MRI lesions have no CNS disease at all, and there are also a fair number of patients with a normal MRI who have CNS symptoms. So in our practice we’re pulling back on doing screening MRIs because we don’t know what to do with the findings, and it just makes everybody worried,” she said.
However, if a child with localized scleroderma develops headaches, seizures, neuropathies, or other CNS symptoms, then by all means get an MRI, and if it shows findings such as brain atrophy, white matter lesions, calcifications, or leptomeningeal enhancement, consider treatment, she added.
Dr. Stevens reported receiving research funding from Kineta and Seattle Genetics.
MAUI, HAWAII – One of the most important steps to take when a child has received a biopsy-confirmed diagnosis of localized scleroderma is to sit down with the family and explain the rationale for the aggressive therapies to come, Anne M. Stevens, MD, PhD, said at the 2019 Rheumatology Winter Clinical Symposium.
It can be a tough sell at first, especially when a child has only a small red streak on the nose and perhaps a subtle linear lesion on the forehead or scalp. But the family has to come to understand that this is a serious, chronic, progressive fibrotic disease.
“Talk about what a big impact this disease can have on growth of a limb and the normal life of a child because of the cosmetic appearance. Explain that the length of treatment course is based on the long-term outcomes and quality of life. This discussion is usually sufficient” to convince people to give their children “these pretty serious medications,” said Dr. Stevens, professor of pediatrics and head of the division of pediatric rheumatology at the University of Washington, Seattle.
“The treatment goal is to control inflammation and prevent damage in these patients, who we like to catch very early, when it’s a subtle lesion,” she added.
The biggest problem
The biggest contributors to poor quality of life in patients with juvenile localized scleroderma are the extracutaneous manifestations, which occur in up to 50% of cases. Joint pain occurs in roughly 20% of patients, joint contractures due to fibrosis of skin and/or tendons in 30%, and myalgia with or without myositis in 15%. Muscle atrophy due to the deep component of the scleroderma can occur. Moreover, growth problems – especially leg or arm length discrepancies – happen in about 20% of patients in prospective studies. These growth problems may not be obvious until a child enters a growth spurt, at which point there is a limited ability to achieve improvement. That’s why Dr. Stevens recommends that every child with localized scleroderma should get a full joint exam at every visit, with measurement and photos of lesions and recording of all erythematous, violaceous, and waxy-hued areas. And if there are lesions on the head, annual eye exams are warranted.
The prevalence of juvenile localized scleroderma in the United States is about 3 per 100,000, with a mean age of onset of 8.2 years. That makes it 100-fold more common than pediatric systemic sclerosis.
The treatment ladder
There are no Food and Drug Administration–approved medications for localized scleroderma in children. It’s all off label. That being said, there is strong consensus among members of the Childhood Arthritis and Rheumatology Research Alliance that the first-line therapy is methotrexate at 15 mg/m2 or a maximum of 20 mg/week plus intravenous corticosteroids weaned over the course of 3-6 months. This is the treatment regimen with the best supporting evidence of safety and efficacy, including a single Italian randomized, double-blind, placebo-controlled clinical trial (Arthritis Rheum. 2011 Jul;63[7]:1998-2006) and an accompanying long-term, open-label follow-up study (J Am Acad Dermatol. 2012 Dec;67[6]:1151-6).
All of the other treatments she uses for juvenile localized scleroderma – mycophenolate mofetil (CellCept), abatacept (Orencia), tocilizumab (Actemra), and occasionally others – are backed only by a smattering of small case series. However, given the serious potential trajectory of this disease, that modest evidence base has been sufficient for her to receive insurance coverage approval of these agents.
In the randomized trial of first-line methotrexate, 48 of 65 patients treated with methotrexate plus steroid (74%) were responders. And among those 48 responders, 35 (73%) maintained a clinical remission for a mean of 25 months off-drug, while another 13 (27%) were in clinical remission on methotrexate. Twenty-eight patients developed side effects that were generally mild; no one required treatment discontinuation. At the 5-year mark, after an average of an initial 2 years on methotrexate, half of the patients were in a sustained clinical remission, which Dr. Stevens deemed “pretty good” considering the well established and manageable safety profile of the drug.
If a patient fails to respond to methotrexate plus corticosteroids within a few months or later experiences disease progression, Dr. Stevens’ second-line therapy is mycophenolate mofetil in conjunction with corticosteroids. Its use in arresting juvenile localized scleroderma is supported by two favorable published case series, the largest of which includes 10 patients (Rheumatology [Oxford]. 2009 Nov;48[11]:1410-3).
Dr. Stevens’ third-line therapy is intravenous abatacept at 10 mg/kg monthly along with intravenous methylprednisolone at 500 mg/week. There are five published case series, the most recent and largest of which included 13 adult patients, two of whom had en coup de sabre lesions (Acta Derm Venereol. 2018 Apr 16;98[4]:465-6). The biologic also shows promise in patients with advanced severe disease with deep tissue involvement (Semin Arthritis Rheum. 2017 Jun;46[6]:775-81). And abatacept has a plausible mechanism of action in localized scleroderma: French investigators have shown it induces regression of skin fibrosis in a mouse model of the disease (Ann Rheum Dis. 2016 Dec;75[12]:2142-9).
Her fourth-line strategy is the anti-interleukin-6 agent tocilizumab, again in conjunction with corticosteroids. In a translational study, tocilizumab has been shown to normalize dermal fibroblasts and collagen in patients with systemic sclerosis (Ann Rheum Dis. 2018 Sep;77[9]:1362-71). And there have been two promising small retrospective case series as well. A more definitive clinical trial is planned.
Dr. Stevens said that when starting a biologic agent in a child with localized scleroderma, she routinely adds methotrexate until the disease is under control.
Drugs supported by case reports and worth considering on an individual basis as a last resort are hydroxychloroquine, azathioprine, cyclosporine, and imatinib mesylate (Gleevec).
For mild, superficial lesions that don’t cross joints, ultraviolet light A phototherapy is a therapeutic option. It displayed significant benefit in a systematic review and meta-analysis of 19 studies comparing it to methotrexate, although the results with methotrexate were deemed superior (Semin Arthritis Rheum. 2018 Dec;48[3]:495-503).
The pros and cons of getting a baseline brain MRI
Children with localized scleroderma have increased rates of severe headache, peripheral neuropathy, complex partial seizures, and stroke. So it had been Dr. Stevens’ routine practice to obtain an initial brain MRI at the time of diagnosis. Of late, though, she has reconsidered that practice.
“The problem is that some patients with abnormal MRI lesions have no CNS disease at all, and there are also a fair number of patients with a normal MRI who have CNS symptoms. So in our practice we’re pulling back on doing screening MRIs because we don’t know what to do with the findings, and it just makes everybody worried,” she said.
However, if a child with localized scleroderma develops headaches, seizures, neuropathies, or other CNS symptoms, then by all means get an MRI, and if it shows findings such as brain atrophy, white matter lesions, calcifications, or leptomeningeal enhancement, consider treatment, she added.
Dr. Stevens reported receiving research funding from Kineta and Seattle Genetics.
MAUI, HAWAII – One of the most important steps to take when a child has received a biopsy-confirmed diagnosis of localized scleroderma is to sit down with the family and explain the rationale for the aggressive therapies to come, Anne M. Stevens, MD, PhD, said at the 2019 Rheumatology Winter Clinical Symposium.
It can be a tough sell at first, especially when a child has only a small red streak on the nose and perhaps a subtle linear lesion on the forehead or scalp. But the family has to come to understand that this is a serious, chronic, progressive fibrotic disease.
“Talk about what a big impact this disease can have on growth of a limb and the normal life of a child because of the cosmetic appearance. Explain that the length of treatment course is based on the long-term outcomes and quality of life. This discussion is usually sufficient” to convince people to give their children “these pretty serious medications,” said Dr. Stevens, professor of pediatrics and head of the division of pediatric rheumatology at the University of Washington, Seattle.
“The treatment goal is to control inflammation and prevent damage in these patients, who we like to catch very early, when it’s a subtle lesion,” she added.
The biggest problem
The biggest contributors to poor quality of life in patients with juvenile localized scleroderma are the extracutaneous manifestations, which occur in up to 50% of cases. Joint pain occurs in roughly 20% of patients, joint contractures due to fibrosis of skin and/or tendons in 30%, and myalgia with or without myositis in 15%. Muscle atrophy due to the deep component of the scleroderma can occur. Moreover, growth problems – especially leg or arm length discrepancies – happen in about 20% of patients in prospective studies. These growth problems may not be obvious until a child enters a growth spurt, at which point there is a limited ability to achieve improvement. That’s why Dr. Stevens recommends that every child with localized scleroderma should get a full joint exam at every visit, with measurement and photos of lesions and recording of all erythematous, violaceous, and waxy-hued areas. And if there are lesions on the head, annual eye exams are warranted.
The prevalence of juvenile localized scleroderma in the United States is about 3 per 100,000, with a mean age of onset of 8.2 years. That makes it 100-fold more common than pediatric systemic sclerosis.
The treatment ladder
There are no Food and Drug Administration–approved medications for localized scleroderma in children. It’s all off label. That being said, there is strong consensus among members of the Childhood Arthritis and Rheumatology Research Alliance that the first-line therapy is methotrexate at 15 mg/m2 or a maximum of 20 mg/week plus intravenous corticosteroids weaned over the course of 3-6 months. This is the treatment regimen with the best supporting evidence of safety and efficacy, including a single Italian randomized, double-blind, placebo-controlled clinical trial (Arthritis Rheum. 2011 Jul;63[7]:1998-2006) and an accompanying long-term, open-label follow-up study (J Am Acad Dermatol. 2012 Dec;67[6]:1151-6).
All of the other treatments she uses for juvenile localized scleroderma – mycophenolate mofetil (CellCept), abatacept (Orencia), tocilizumab (Actemra), and occasionally others – are backed only by a smattering of small case series. However, given the serious potential trajectory of this disease, that modest evidence base has been sufficient for her to receive insurance coverage approval of these agents.
In the randomized trial of first-line methotrexate, 48 of 65 patients treated with methotrexate plus steroid (74%) were responders. And among those 48 responders, 35 (73%) maintained a clinical remission for a mean of 25 months off-drug, while another 13 (27%) were in clinical remission on methotrexate. Twenty-eight patients developed side effects that were generally mild; no one required treatment discontinuation. At the 5-year mark, after an average of an initial 2 years on methotrexate, half of the patients were in a sustained clinical remission, which Dr. Stevens deemed “pretty good” considering the well established and manageable safety profile of the drug.
If a patient fails to respond to methotrexate plus corticosteroids within a few months or later experiences disease progression, Dr. Stevens’ second-line therapy is mycophenolate mofetil in conjunction with corticosteroids. Its use in arresting juvenile localized scleroderma is supported by two favorable published case series, the largest of which includes 10 patients (Rheumatology [Oxford]. 2009 Nov;48[11]:1410-3).
Dr. Stevens’ third-line therapy is intravenous abatacept at 10 mg/kg monthly along with intravenous methylprednisolone at 500 mg/week. There are five published case series, the most recent and largest of which included 13 adult patients, two of whom had en coup de sabre lesions (Acta Derm Venereol. 2018 Apr 16;98[4]:465-6). The biologic also shows promise in patients with advanced severe disease with deep tissue involvement (Semin Arthritis Rheum. 2017 Jun;46[6]:775-81). And abatacept has a plausible mechanism of action in localized scleroderma: French investigators have shown it induces regression of skin fibrosis in a mouse model of the disease (Ann Rheum Dis. 2016 Dec;75[12]:2142-9).
Her fourth-line strategy is the anti-interleukin-6 agent tocilizumab, again in conjunction with corticosteroids. In a translational study, tocilizumab has been shown to normalize dermal fibroblasts and collagen in patients with systemic sclerosis (Ann Rheum Dis. 2018 Sep;77[9]:1362-71). And there have been two promising small retrospective case series as well. A more definitive clinical trial is planned.
Dr. Stevens said that when starting a biologic agent in a child with localized scleroderma, she routinely adds methotrexate until the disease is under control.
Drugs supported by case reports and worth considering on an individual basis as a last resort are hydroxychloroquine, azathioprine, cyclosporine, and imatinib mesylate (Gleevec).
For mild, superficial lesions that don’t cross joints, ultraviolet light A phototherapy is a therapeutic option. It displayed significant benefit in a systematic review and meta-analysis of 19 studies comparing it to methotrexate, although the results with methotrexate were deemed superior (Semin Arthritis Rheum. 2018 Dec;48[3]:495-503).
The pros and cons of getting a baseline brain MRI
Children with localized scleroderma have increased rates of severe headache, peripheral neuropathy, complex partial seizures, and stroke. So it had been Dr. Stevens’ routine practice to obtain an initial brain MRI at the time of diagnosis. Of late, though, she has reconsidered that practice.
“The problem is that some patients with abnormal MRI lesions have no CNS disease at all, and there are also a fair number of patients with a normal MRI who have CNS symptoms. So in our practice we’re pulling back on doing screening MRIs because we don’t know what to do with the findings, and it just makes everybody worried,” she said.
However, if a child with localized scleroderma develops headaches, seizures, neuropathies, or other CNS symptoms, then by all means get an MRI, and if it shows findings such as brain atrophy, white matter lesions, calcifications, or leptomeningeal enhancement, consider treatment, she added.
Dr. Stevens reported receiving research funding from Kineta and Seattle Genetics.
REPORTING FROM RWCS 2019