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Success in achondroplasia spurs testing vosoritide in more growth disorders
On the basis of the quality of sustained bone growth achieved with vosoritide in dwarfism, studies are underway or being considered for more diseases that impair bone growth, according to discussion that followed the presentation of a phase 3 trial extension study at the annual meeting of the Endocrine Society.
After 1 year on active therapy in the randomized trial and another year in the extension study, patients in the vosoritide group had sustained growth velocity while placebo group patients who crossed over to active therapy caught up, reported Ravi Savarirayan, MD, Murdoch Children’s Research Institute, University of Melbourne, Australia.
Moreover, the quality and type of bone growth, such as the improvement in body segment ratios over the second year of the study, support a durable benefit. Dr. Savarirayan said that improvements in activities of daily living are expected from this improvement in upper-to-lower body segment ratios, as well as the growth seen in the limbs.
Currently there is no approved pharmacologic therapy for achondroplasia in the United States. Growth hormone has been approved in Japan, but Dr. Savarirayan said its effects have been limited. Surgery such as limb lengthening is another option, but this approach is not uniformly effective and carries risks.
The 52-week results from the multinational phase 3 trial with vosoritide, which stimulates bone growth, were published last year in The Lancet. In that trial, 121 patients between the ages of 5 and 18 years with achondroplasia were randomized to vosoritide at a dose of 15 μg/kg once daily or placebo.
Relative to those in the placebo arm, which did not experience any change in growth, the median growth at the end of 52 weeks was 1.75 cm/year greater (6.71 vs. 3.99 cm).
After crossover, placebo patients catch up
In the extension study, the placebo patients were crossed over to the active therapy and both groups were followed for an additional 52 weeks. Over this period, velocity declined modestly in those in the group initially randomized to vosoritide but climbed steeply in the placebo group so that rates after 1 year were nearly identical (5.57 vs. 5.65 cm, respectively).
“The results suggest this medication may well have a durable effect,” said Dr. Savarirayan, who believes that the benefit is derived from stimulation of the growth plates. Based on the very similar efficacy observed in the placebo group once switched to active therapy, the response to vosoritide appears to be predictable.
Of the 60 patients initially randomized to vosoritide, 58 entered the extension. Of the patients who did not remain in the study, two left due to discomfort from injection-site reactions. All 61 patients initially assigned to placebo crossed over.
“We did not see any evidence of tachyphylaxis in the randomized study or in the extension,” Dr. Savarirayan said.
Although two more patients initiated on vosoritide discontinued treatment before the end of 2 years, there were no new adverse events observed. Rather, injection-site pain, which self-resolved in all patients, appears to be the most significant side effect.
“In children, the daily subcutaneous injections can be an issue,” Dr. Savarirayan acknowledged.
Injection site reactions most common adverse event
In a detailed evaluation of safety in a previously published dose-finding phase 2 study, injection-site reactions were also the most common of treatment-related adverse events, but there were no episodes of anaphylaxis or other grade 3 or higher hypersensitivity reactions (N Engl J Med. 2019 Jul 4;381:25-35).
Prior to clinical trials, continuous infusion of endogenous C-type natriuretic peptide demonstrated an ability to stimulate long-bone growth in experimental studies. Vosoritide, a recombinant analogue of C-type natriuretic peptide, appears to provide the same activity but offers a longer half-life.
Based on the benefits observed in achondroplasia, other applications are now being explored.
“When you evaluate the quality of the bone growth associated with vosoritide, it is normal,” said Melita Irving, MD, a consultant in clinical genetics at the Guy’s and St .Thomas’ NHS Trust, London. Dr. Irving has been involved in other research initiatives with this therapy and she cited a variety of evidence that has supported healthy bone development, including favorable changes in markers of bone growth such as type 10 collagen.
As a result, vosoritide, which is now under review by the U.S. Food and Drug Administration for treatment of dwarfism, is being pursued for several other diseases that result in abnormal bone growth, such as hypochondroplasia. Not least, clinical studies in idiopathic short stature have reached “early stages,” Dr. Irving said.
Dr. Savarirayan and Dr. Irving report no relevant conflicts of interest.
On the basis of the quality of sustained bone growth achieved with vosoritide in dwarfism, studies are underway or being considered for more diseases that impair bone growth, according to discussion that followed the presentation of a phase 3 trial extension study at the annual meeting of the Endocrine Society.
After 1 year on active therapy in the randomized trial and another year in the extension study, patients in the vosoritide group had sustained growth velocity while placebo group patients who crossed over to active therapy caught up, reported Ravi Savarirayan, MD, Murdoch Children’s Research Institute, University of Melbourne, Australia.
Moreover, the quality and type of bone growth, such as the improvement in body segment ratios over the second year of the study, support a durable benefit. Dr. Savarirayan said that improvements in activities of daily living are expected from this improvement in upper-to-lower body segment ratios, as well as the growth seen in the limbs.
Currently there is no approved pharmacologic therapy for achondroplasia in the United States. Growth hormone has been approved in Japan, but Dr. Savarirayan said its effects have been limited. Surgery such as limb lengthening is another option, but this approach is not uniformly effective and carries risks.
The 52-week results from the multinational phase 3 trial with vosoritide, which stimulates bone growth, were published last year in The Lancet. In that trial, 121 patients between the ages of 5 and 18 years with achondroplasia were randomized to vosoritide at a dose of 15 μg/kg once daily or placebo.
Relative to those in the placebo arm, which did not experience any change in growth, the median growth at the end of 52 weeks was 1.75 cm/year greater (6.71 vs. 3.99 cm).
After crossover, placebo patients catch up
In the extension study, the placebo patients were crossed over to the active therapy and both groups were followed for an additional 52 weeks. Over this period, velocity declined modestly in those in the group initially randomized to vosoritide but climbed steeply in the placebo group so that rates after 1 year were nearly identical (5.57 vs. 5.65 cm, respectively).
“The results suggest this medication may well have a durable effect,” said Dr. Savarirayan, who believes that the benefit is derived from stimulation of the growth plates. Based on the very similar efficacy observed in the placebo group once switched to active therapy, the response to vosoritide appears to be predictable.
Of the 60 patients initially randomized to vosoritide, 58 entered the extension. Of the patients who did not remain in the study, two left due to discomfort from injection-site reactions. All 61 patients initially assigned to placebo crossed over.
“We did not see any evidence of tachyphylaxis in the randomized study or in the extension,” Dr. Savarirayan said.
Although two more patients initiated on vosoritide discontinued treatment before the end of 2 years, there were no new adverse events observed. Rather, injection-site pain, which self-resolved in all patients, appears to be the most significant side effect.
“In children, the daily subcutaneous injections can be an issue,” Dr. Savarirayan acknowledged.
Injection site reactions most common adverse event
In a detailed evaluation of safety in a previously published dose-finding phase 2 study, injection-site reactions were also the most common of treatment-related adverse events, but there were no episodes of anaphylaxis or other grade 3 or higher hypersensitivity reactions (N Engl J Med. 2019 Jul 4;381:25-35).
Prior to clinical trials, continuous infusion of endogenous C-type natriuretic peptide demonstrated an ability to stimulate long-bone growth in experimental studies. Vosoritide, a recombinant analogue of C-type natriuretic peptide, appears to provide the same activity but offers a longer half-life.
Based on the benefits observed in achondroplasia, other applications are now being explored.
“When you evaluate the quality of the bone growth associated with vosoritide, it is normal,” said Melita Irving, MD, a consultant in clinical genetics at the Guy’s and St .Thomas’ NHS Trust, London. Dr. Irving has been involved in other research initiatives with this therapy and she cited a variety of evidence that has supported healthy bone development, including favorable changes in markers of bone growth such as type 10 collagen.
As a result, vosoritide, which is now under review by the U.S. Food and Drug Administration for treatment of dwarfism, is being pursued for several other diseases that result in abnormal bone growth, such as hypochondroplasia. Not least, clinical studies in idiopathic short stature have reached “early stages,” Dr. Irving said.
Dr. Savarirayan and Dr. Irving report no relevant conflicts of interest.
On the basis of the quality of sustained bone growth achieved with vosoritide in dwarfism, studies are underway or being considered for more diseases that impair bone growth, according to discussion that followed the presentation of a phase 3 trial extension study at the annual meeting of the Endocrine Society.
After 1 year on active therapy in the randomized trial and another year in the extension study, patients in the vosoritide group had sustained growth velocity while placebo group patients who crossed over to active therapy caught up, reported Ravi Savarirayan, MD, Murdoch Children’s Research Institute, University of Melbourne, Australia.
Moreover, the quality and type of bone growth, such as the improvement in body segment ratios over the second year of the study, support a durable benefit. Dr. Savarirayan said that improvements in activities of daily living are expected from this improvement in upper-to-lower body segment ratios, as well as the growth seen in the limbs.
Currently there is no approved pharmacologic therapy for achondroplasia in the United States. Growth hormone has been approved in Japan, but Dr. Savarirayan said its effects have been limited. Surgery such as limb lengthening is another option, but this approach is not uniformly effective and carries risks.
The 52-week results from the multinational phase 3 trial with vosoritide, which stimulates bone growth, were published last year in The Lancet. In that trial, 121 patients between the ages of 5 and 18 years with achondroplasia were randomized to vosoritide at a dose of 15 μg/kg once daily or placebo.
Relative to those in the placebo arm, which did not experience any change in growth, the median growth at the end of 52 weeks was 1.75 cm/year greater (6.71 vs. 3.99 cm).
After crossover, placebo patients catch up
In the extension study, the placebo patients were crossed over to the active therapy and both groups were followed for an additional 52 weeks. Over this period, velocity declined modestly in those in the group initially randomized to vosoritide but climbed steeply in the placebo group so that rates after 1 year were nearly identical (5.57 vs. 5.65 cm, respectively).
“The results suggest this medication may well have a durable effect,” said Dr. Savarirayan, who believes that the benefit is derived from stimulation of the growth plates. Based on the very similar efficacy observed in the placebo group once switched to active therapy, the response to vosoritide appears to be predictable.
Of the 60 patients initially randomized to vosoritide, 58 entered the extension. Of the patients who did not remain in the study, two left due to discomfort from injection-site reactions. All 61 patients initially assigned to placebo crossed over.
“We did not see any evidence of tachyphylaxis in the randomized study or in the extension,” Dr. Savarirayan said.
Although two more patients initiated on vosoritide discontinued treatment before the end of 2 years, there were no new adverse events observed. Rather, injection-site pain, which self-resolved in all patients, appears to be the most significant side effect.
“In children, the daily subcutaneous injections can be an issue,” Dr. Savarirayan acknowledged.
Injection site reactions most common adverse event
In a detailed evaluation of safety in a previously published dose-finding phase 2 study, injection-site reactions were also the most common of treatment-related adverse events, but there were no episodes of anaphylaxis or other grade 3 or higher hypersensitivity reactions (N Engl J Med. 2019 Jul 4;381:25-35).
Prior to clinical trials, continuous infusion of endogenous C-type natriuretic peptide demonstrated an ability to stimulate long-bone growth in experimental studies. Vosoritide, a recombinant analogue of C-type natriuretic peptide, appears to provide the same activity but offers a longer half-life.
Based on the benefits observed in achondroplasia, other applications are now being explored.
“When you evaluate the quality of the bone growth associated with vosoritide, it is normal,” said Melita Irving, MD, a consultant in clinical genetics at the Guy’s and St .Thomas’ NHS Trust, London. Dr. Irving has been involved in other research initiatives with this therapy and she cited a variety of evidence that has supported healthy bone development, including favorable changes in markers of bone growth such as type 10 collagen.
As a result, vosoritide, which is now under review by the U.S. Food and Drug Administration for treatment of dwarfism, is being pursued for several other diseases that result in abnormal bone growth, such as hypochondroplasia. Not least, clinical studies in idiopathic short stature have reached “early stages,” Dr. Irving said.
Dr. Savarirayan and Dr. Irving report no relevant conflicts of interest.
FROM ENDO 2021
Colchicine before PCI for acute MI fails to improve major outcomes
In a placebo-controlled randomized trial, a preprocedural dose of colchicine administered immediately before percutaneous coronary intervention (PCI) for an acute ST-segment elevated myocardial infarction (STEMI) did not reduce the no-reflow phenomenon or improve outcomes.
No-reflow, in which insufficient myocardial perfusion is present even though the coronary artery appears patent, was the primary outcome, and the proportion of patients experiencing this event was exactly the same (14.4%) in the colchicine and placebo groups, reported Yaser Jenab, MD, at CRT 2021 sponsored by MedStar Heart & Vascular Institute.
The hypothesis that colchicine would offer benefit in this setting was largely based on the Colchicine Cardiovascular Outcomes Trial (COLCOT). In that study, colchicine was associated with a 23% reduction in risk for major adverse cardiovascular events (MACE) relative to placebo when administered within 30 days after a myocardial infarction (hazard ratio, 0.77; P = .02).
The benefit in that trial was attributed to an anti-inflammatory effect, according to Dr. Jenab, associate professor of cardiology at Tehran (Iran) Heart Center. In particular as it relates to vascular disease, he cited experimental studies associating colchicine with a reduction in neutrophil activation and adherence to vascular endothelium.
The rationale for a preprocedural approach to colchicine was supplied by a subsequent time-to-treatment COLCOT analysis. In this study, MACE risk reduction for colchicine climbed to 48% (HR 0.52) for those treated within 3 days of the MI but largely disappeared (HR 0.96) if treatment was started at least 8 days post MI.
PodCAST-PCI trial
In the preprocedural study, called the PodCAST-PCI trial, 321 acute STEMI patients were randomized. Patients received a 1-mg dose of oral colchicine or placebo at the time PCI was scheduled. Another dose of colchicine (0.5 mg) or placebo was administered 1 hour after the procedure.
Of secondary outcomes, which included MACE at 1 month and 1 year, ST-segment resolution at 1 month, and change in inflammatory markers at 1 month, none were significant. Few even trended for significance.
For MACE, which included cardiac death, stroke, nonfatal MI, new hospitalization due to heart failure, or target vessel revascularization, the rates were lower in the colchicine group at 1 month (4.3% vs. 7.5%) and 1 year (9.3% vs. 11.2%), but neither approached significance.
For ST-segment resolution, the proportions were generally comparable among the colchicine and placebo groups, respectively, for the proportion below 50% (18.6% vs. 23.1%), between 50% and 70% (16.8% vs. 15.6%), and above 70% (64.6% vs. 61.3%).
The average troponin levels were nonsignificantly lower at 6 hours (1,847 vs. 2,883 ng/mL) in the colchicine group but higher at 48 hours (1,197 vs. 1,147 ng/mL). The average C-reactive protein (CRP) levels at 48 hours were nonsignificantly lower on colchicine (176.5 vs. 244.5 mg/L).
There were no significant differences in postprocedural perfusion, as measured with TIMI blood flow, or in the rate of stent thrombosis, which occurred in roughly 3% of each group of patients.
The small sample size was one limitation of this study, Dr. Jenab acknowledged. For this and other reasons, he cautioned that these data are not definitive and do not preclude a benefit on clinical outcomes in a study with a larger size, a different design, or different dosing.
Timing might be the issue
However, even if colchicine has a potential benefit in this setting, timing might be a major obstacle, according to Binata Shah, MD, associate director of research for the Cardiac Catheterization Laboratory at New York University.
“We have learned from our rheumatology colleagues that peak plasma levels of colchicine are not achieved for at least 1 hour after the full loading dose,” Dr. Shah said. “With us moving so quickly in a primary PCI setting, it is hard to imagine that colchicine would have had time to really kick in and exert its anti-inflammatory effect.”
Indeed, the problem might be worse than reaching the peak plasma level.
“Even though peak plasma levels occur as early as 1 hour after a full loading dose, we see that it takes about 24 hours to really see the effects translate downstream into more systemic inflammatory markers such as CRP and interleukin-6,” she added. If lowering these signals of inflammation is predictive of benefit, than this might be the biggest obstacle to benefit from colchicine in an urgent treatment setting.
Dr. Jenab and Dr. Shah reported no potential conflicts of interest.
In a placebo-controlled randomized trial, a preprocedural dose of colchicine administered immediately before percutaneous coronary intervention (PCI) for an acute ST-segment elevated myocardial infarction (STEMI) did not reduce the no-reflow phenomenon or improve outcomes.
No-reflow, in which insufficient myocardial perfusion is present even though the coronary artery appears patent, was the primary outcome, and the proportion of patients experiencing this event was exactly the same (14.4%) in the colchicine and placebo groups, reported Yaser Jenab, MD, at CRT 2021 sponsored by MedStar Heart & Vascular Institute.
The hypothesis that colchicine would offer benefit in this setting was largely based on the Colchicine Cardiovascular Outcomes Trial (COLCOT). In that study, colchicine was associated with a 23% reduction in risk for major adverse cardiovascular events (MACE) relative to placebo when administered within 30 days after a myocardial infarction (hazard ratio, 0.77; P = .02).
The benefit in that trial was attributed to an anti-inflammatory effect, according to Dr. Jenab, associate professor of cardiology at Tehran (Iran) Heart Center. In particular as it relates to vascular disease, he cited experimental studies associating colchicine with a reduction in neutrophil activation and adherence to vascular endothelium.
The rationale for a preprocedural approach to colchicine was supplied by a subsequent time-to-treatment COLCOT analysis. In this study, MACE risk reduction for colchicine climbed to 48% (HR 0.52) for those treated within 3 days of the MI but largely disappeared (HR 0.96) if treatment was started at least 8 days post MI.
PodCAST-PCI trial
In the preprocedural study, called the PodCAST-PCI trial, 321 acute STEMI patients were randomized. Patients received a 1-mg dose of oral colchicine or placebo at the time PCI was scheduled. Another dose of colchicine (0.5 mg) or placebo was administered 1 hour after the procedure.
Of secondary outcomes, which included MACE at 1 month and 1 year, ST-segment resolution at 1 month, and change in inflammatory markers at 1 month, none were significant. Few even trended for significance.
For MACE, which included cardiac death, stroke, nonfatal MI, new hospitalization due to heart failure, or target vessel revascularization, the rates were lower in the colchicine group at 1 month (4.3% vs. 7.5%) and 1 year (9.3% vs. 11.2%), but neither approached significance.
For ST-segment resolution, the proportions were generally comparable among the colchicine and placebo groups, respectively, for the proportion below 50% (18.6% vs. 23.1%), between 50% and 70% (16.8% vs. 15.6%), and above 70% (64.6% vs. 61.3%).
The average troponin levels were nonsignificantly lower at 6 hours (1,847 vs. 2,883 ng/mL) in the colchicine group but higher at 48 hours (1,197 vs. 1,147 ng/mL). The average C-reactive protein (CRP) levels at 48 hours were nonsignificantly lower on colchicine (176.5 vs. 244.5 mg/L).
There were no significant differences in postprocedural perfusion, as measured with TIMI blood flow, or in the rate of stent thrombosis, which occurred in roughly 3% of each group of patients.
The small sample size was one limitation of this study, Dr. Jenab acknowledged. For this and other reasons, he cautioned that these data are not definitive and do not preclude a benefit on clinical outcomes in a study with a larger size, a different design, or different dosing.
Timing might be the issue
However, even if colchicine has a potential benefit in this setting, timing might be a major obstacle, according to Binata Shah, MD, associate director of research for the Cardiac Catheterization Laboratory at New York University.
“We have learned from our rheumatology colleagues that peak plasma levels of colchicine are not achieved for at least 1 hour after the full loading dose,” Dr. Shah said. “With us moving so quickly in a primary PCI setting, it is hard to imagine that colchicine would have had time to really kick in and exert its anti-inflammatory effect.”
Indeed, the problem might be worse than reaching the peak plasma level.
“Even though peak plasma levels occur as early as 1 hour after a full loading dose, we see that it takes about 24 hours to really see the effects translate downstream into more systemic inflammatory markers such as CRP and interleukin-6,” she added. If lowering these signals of inflammation is predictive of benefit, than this might be the biggest obstacle to benefit from colchicine in an urgent treatment setting.
Dr. Jenab and Dr. Shah reported no potential conflicts of interest.
In a placebo-controlled randomized trial, a preprocedural dose of colchicine administered immediately before percutaneous coronary intervention (PCI) for an acute ST-segment elevated myocardial infarction (STEMI) did not reduce the no-reflow phenomenon or improve outcomes.
No-reflow, in which insufficient myocardial perfusion is present even though the coronary artery appears patent, was the primary outcome, and the proportion of patients experiencing this event was exactly the same (14.4%) in the colchicine and placebo groups, reported Yaser Jenab, MD, at CRT 2021 sponsored by MedStar Heart & Vascular Institute.
The hypothesis that colchicine would offer benefit in this setting was largely based on the Colchicine Cardiovascular Outcomes Trial (COLCOT). In that study, colchicine was associated with a 23% reduction in risk for major adverse cardiovascular events (MACE) relative to placebo when administered within 30 days after a myocardial infarction (hazard ratio, 0.77; P = .02).
The benefit in that trial was attributed to an anti-inflammatory effect, according to Dr. Jenab, associate professor of cardiology at Tehran (Iran) Heart Center. In particular as it relates to vascular disease, he cited experimental studies associating colchicine with a reduction in neutrophil activation and adherence to vascular endothelium.
The rationale for a preprocedural approach to colchicine was supplied by a subsequent time-to-treatment COLCOT analysis. In this study, MACE risk reduction for colchicine climbed to 48% (HR 0.52) for those treated within 3 days of the MI but largely disappeared (HR 0.96) if treatment was started at least 8 days post MI.
PodCAST-PCI trial
In the preprocedural study, called the PodCAST-PCI trial, 321 acute STEMI patients were randomized. Patients received a 1-mg dose of oral colchicine or placebo at the time PCI was scheduled. Another dose of colchicine (0.5 mg) or placebo was administered 1 hour after the procedure.
Of secondary outcomes, which included MACE at 1 month and 1 year, ST-segment resolution at 1 month, and change in inflammatory markers at 1 month, none were significant. Few even trended for significance.
For MACE, which included cardiac death, stroke, nonfatal MI, new hospitalization due to heart failure, or target vessel revascularization, the rates were lower in the colchicine group at 1 month (4.3% vs. 7.5%) and 1 year (9.3% vs. 11.2%), but neither approached significance.
For ST-segment resolution, the proportions were generally comparable among the colchicine and placebo groups, respectively, for the proportion below 50% (18.6% vs. 23.1%), between 50% and 70% (16.8% vs. 15.6%), and above 70% (64.6% vs. 61.3%).
The average troponin levels were nonsignificantly lower at 6 hours (1,847 vs. 2,883 ng/mL) in the colchicine group but higher at 48 hours (1,197 vs. 1,147 ng/mL). The average C-reactive protein (CRP) levels at 48 hours were nonsignificantly lower on colchicine (176.5 vs. 244.5 mg/L).
There were no significant differences in postprocedural perfusion, as measured with TIMI blood flow, or in the rate of stent thrombosis, which occurred in roughly 3% of each group of patients.
The small sample size was one limitation of this study, Dr. Jenab acknowledged. For this and other reasons, he cautioned that these data are not definitive and do not preclude a benefit on clinical outcomes in a study with a larger size, a different design, or different dosing.
Timing might be the issue
However, even if colchicine has a potential benefit in this setting, timing might be a major obstacle, according to Binata Shah, MD, associate director of research for the Cardiac Catheterization Laboratory at New York University.
“We have learned from our rheumatology colleagues that peak plasma levels of colchicine are not achieved for at least 1 hour after the full loading dose,” Dr. Shah said. “With us moving so quickly in a primary PCI setting, it is hard to imagine that colchicine would have had time to really kick in and exert its anti-inflammatory effect.”
Indeed, the problem might be worse than reaching the peak plasma level.
“Even though peak plasma levels occur as early as 1 hour after a full loading dose, we see that it takes about 24 hours to really see the effects translate downstream into more systemic inflammatory markers such as CRP and interleukin-6,” she added. If lowering these signals of inflammation is predictive of benefit, than this might be the biggest obstacle to benefit from colchicine in an urgent treatment setting.
Dr. Jenab and Dr. Shah reported no potential conflicts of interest.
FROM CRT 2021
Target-lesion failure reduced 2 years after MI with biodegradable stent
For a primary composite target-lesion failure outcome, a biodegradable polymer sirolimus-eluting stent showed superiority at 2 years over a durable polymer everolimus-eluting stent in patients undergoing percutaneous intervention (PCI) for an ST-segment elevated acute myocardial infarction (STEMI), according to a late-breaking trial presentation at CRT 2021.
As in the previously reported 1-year results from the BIOSTEMI trial, the advantage of the biodegradable device was “driven by lower rates of target-lesion revascularization,” reported Thomas Pilgrim, MD, of the University of Bern (Switzerland).
Drug-eluting stents have already been established as superior to bare-metal stents, but the question asked in this study is whether the polymer that carries antiproliferative drugs, such as sirolimus or everolimus, improves lesion-based outcomes if it is biodegradable rather than durable, Dr. Pilgrim explained.
The composite primary outcome was target-lesion failure defined by cardiac death, target-lesion MI, or clinically indicated target-lesion revascularization.
After 2 years of follow-up, the rates of target-lesion failure were 5.1% and 8.1% for the biodegradable and durable polymer stents, respectively. This 0.58 rate ratio was statistically significant, favoring the biodegradable stent.
The investigator-initiated BIOSTEMI trial randomized 1,300 patients to one of two drug-eluting stents with ultrathin struts. One was the Orsiro stent that employs a biodegradable polymer to deliver sirolimus. The other was the Xience Prime/Xpedition that uses a durable polymer stent to deliver everolimus.
The strut thicknesses of the Orsiro stent are 60 mcm for stents of 3.0 mm in diameter or smaller and 80 mcm for those with a larger diameter. The strut thickness of the Xience stent is 81 mcm regardless of diameter.
“Patients with an acute myocardial infarction are at increased risk of stent-related events due to exacerbated inflammatory response and delayed arterial healing,” Dr. Pilgrim said. The theoretical advantages of polymer that biodegrades include “mitigation of the arterial injury, facilitation of endothelialization, and reduced intimal hyperplasia,” he explained at the meeting sponsored by MedStar Heart & Vascular Institute.
The rates of cardiac death (2.9% vs. 3.2%) and target-vessel MI (2.9% vs. 3.2%) were lower for the biodegradable polymer stent, but not significantly. However, the rates of target-vessel revascularization at 2 years were 2.5% versus 5.1%. The associated rate ratio of 0.52 favoring the biodegradable stent was significant.
Similar results favoring the biodegradable polymer stent were observed at 1 year, but those earlier results factored in historical data from the BIOSCIENCE trial, using a Bayesian analysis, to improve the power of the comparison. In this 2-year analysis, the superiority of the biodegradable polymer stent to the durable polymer stent remained statistically significant even when excluding those historical controls.
The advantage of the biodegradable polymer stent was confined to “device-oriented” outcomes, according to Dr. Pilgrim. When compared for important patient-oriented outcomes at 2 years, there were no significant differences. Rather, several were numerically more common, including death (4.2% vs. 3.8%) and MI (3.7% vs. 3.1%) in those who were randomized to the biodegradable polymer stent.
But these types of clinical outcomes are not necessarily related to stent assignment because “up to one-half of all events over the 2 years of follow-up were unrelated to the stent implanted,” Dr. Pilgrim said. He noted that high rates of events unrelated to the implanted stent have also been seen in follow-up of other comparative stent trials.
The superiority of the biodegradable stent is noteworthy. Although Dr. Pilgrim described the BIOSTEMI trial as “the first head-to-head comparison of two new-generation drug-eluting stents in patients undergoing a primary percutaneous intervention for acute myocardial infarction,” there have been several studies comparing stents for other indications. Significant differences have been uncommon.
“Over the last 10 years, we have seen a number of noninferiority stent trials, but only now are we seeing some superiority differences. This is a move in the right direction,” commented Sripal Bangalore, MD, director of the cardiovascular outcomes group, New York University.
However, he, like others, questioned whether the difference in outcomes in this trial could be fully attributed to the type of polymer. He noted that all stents could be characterized by multiple small and large differences in design and composition. Any specific characteristic, such as biodegradable polymer, might be an important contributor but not an isolated factor in the outcomes observed.
On the day that the 2-year results of the BIOSTEMI trial were presented at the CRT 2021 meeting they were simultaneously published in JACC: Cardiovascular Interventions.
Dr. Pilgrim reports financial relationships with several companies that make stent devices, including Biotronik and Boston Scientific. Dr. Bangalore reports no potential conflicts of interest.
For a primary composite target-lesion failure outcome, a biodegradable polymer sirolimus-eluting stent showed superiority at 2 years over a durable polymer everolimus-eluting stent in patients undergoing percutaneous intervention (PCI) for an ST-segment elevated acute myocardial infarction (STEMI), according to a late-breaking trial presentation at CRT 2021.
As in the previously reported 1-year results from the BIOSTEMI trial, the advantage of the biodegradable device was “driven by lower rates of target-lesion revascularization,” reported Thomas Pilgrim, MD, of the University of Bern (Switzerland).
Drug-eluting stents have already been established as superior to bare-metal stents, but the question asked in this study is whether the polymer that carries antiproliferative drugs, such as sirolimus or everolimus, improves lesion-based outcomes if it is biodegradable rather than durable, Dr. Pilgrim explained.
The composite primary outcome was target-lesion failure defined by cardiac death, target-lesion MI, or clinically indicated target-lesion revascularization.
After 2 years of follow-up, the rates of target-lesion failure were 5.1% and 8.1% for the biodegradable and durable polymer stents, respectively. This 0.58 rate ratio was statistically significant, favoring the biodegradable stent.
The investigator-initiated BIOSTEMI trial randomized 1,300 patients to one of two drug-eluting stents with ultrathin struts. One was the Orsiro stent that employs a biodegradable polymer to deliver sirolimus. The other was the Xience Prime/Xpedition that uses a durable polymer stent to deliver everolimus.
The strut thicknesses of the Orsiro stent are 60 mcm for stents of 3.0 mm in diameter or smaller and 80 mcm for those with a larger diameter. The strut thickness of the Xience stent is 81 mcm regardless of diameter.
“Patients with an acute myocardial infarction are at increased risk of stent-related events due to exacerbated inflammatory response and delayed arterial healing,” Dr. Pilgrim said. The theoretical advantages of polymer that biodegrades include “mitigation of the arterial injury, facilitation of endothelialization, and reduced intimal hyperplasia,” he explained at the meeting sponsored by MedStar Heart & Vascular Institute.
The rates of cardiac death (2.9% vs. 3.2%) and target-vessel MI (2.9% vs. 3.2%) were lower for the biodegradable polymer stent, but not significantly. However, the rates of target-vessel revascularization at 2 years were 2.5% versus 5.1%. The associated rate ratio of 0.52 favoring the biodegradable stent was significant.
Similar results favoring the biodegradable polymer stent were observed at 1 year, but those earlier results factored in historical data from the BIOSCIENCE trial, using a Bayesian analysis, to improve the power of the comparison. In this 2-year analysis, the superiority of the biodegradable polymer stent to the durable polymer stent remained statistically significant even when excluding those historical controls.
The advantage of the biodegradable polymer stent was confined to “device-oriented” outcomes, according to Dr. Pilgrim. When compared for important patient-oriented outcomes at 2 years, there were no significant differences. Rather, several were numerically more common, including death (4.2% vs. 3.8%) and MI (3.7% vs. 3.1%) in those who were randomized to the biodegradable polymer stent.
But these types of clinical outcomes are not necessarily related to stent assignment because “up to one-half of all events over the 2 years of follow-up were unrelated to the stent implanted,” Dr. Pilgrim said. He noted that high rates of events unrelated to the implanted stent have also been seen in follow-up of other comparative stent trials.
The superiority of the biodegradable stent is noteworthy. Although Dr. Pilgrim described the BIOSTEMI trial as “the first head-to-head comparison of two new-generation drug-eluting stents in patients undergoing a primary percutaneous intervention for acute myocardial infarction,” there have been several studies comparing stents for other indications. Significant differences have been uncommon.
“Over the last 10 years, we have seen a number of noninferiority stent trials, but only now are we seeing some superiority differences. This is a move in the right direction,” commented Sripal Bangalore, MD, director of the cardiovascular outcomes group, New York University.
However, he, like others, questioned whether the difference in outcomes in this trial could be fully attributed to the type of polymer. He noted that all stents could be characterized by multiple small and large differences in design and composition. Any specific characteristic, such as biodegradable polymer, might be an important contributor but not an isolated factor in the outcomes observed.
On the day that the 2-year results of the BIOSTEMI trial were presented at the CRT 2021 meeting they were simultaneously published in JACC: Cardiovascular Interventions.
Dr. Pilgrim reports financial relationships with several companies that make stent devices, including Biotronik and Boston Scientific. Dr. Bangalore reports no potential conflicts of interest.
For a primary composite target-lesion failure outcome, a biodegradable polymer sirolimus-eluting stent showed superiority at 2 years over a durable polymer everolimus-eluting stent in patients undergoing percutaneous intervention (PCI) for an ST-segment elevated acute myocardial infarction (STEMI), according to a late-breaking trial presentation at CRT 2021.
As in the previously reported 1-year results from the BIOSTEMI trial, the advantage of the biodegradable device was “driven by lower rates of target-lesion revascularization,” reported Thomas Pilgrim, MD, of the University of Bern (Switzerland).
Drug-eluting stents have already been established as superior to bare-metal stents, but the question asked in this study is whether the polymer that carries antiproliferative drugs, such as sirolimus or everolimus, improves lesion-based outcomes if it is biodegradable rather than durable, Dr. Pilgrim explained.
The composite primary outcome was target-lesion failure defined by cardiac death, target-lesion MI, or clinically indicated target-lesion revascularization.
After 2 years of follow-up, the rates of target-lesion failure were 5.1% and 8.1% for the biodegradable and durable polymer stents, respectively. This 0.58 rate ratio was statistically significant, favoring the biodegradable stent.
The investigator-initiated BIOSTEMI trial randomized 1,300 patients to one of two drug-eluting stents with ultrathin struts. One was the Orsiro stent that employs a biodegradable polymer to deliver sirolimus. The other was the Xience Prime/Xpedition that uses a durable polymer stent to deliver everolimus.
The strut thicknesses of the Orsiro stent are 60 mcm for stents of 3.0 mm in diameter or smaller and 80 mcm for those with a larger diameter. The strut thickness of the Xience stent is 81 mcm regardless of diameter.
“Patients with an acute myocardial infarction are at increased risk of stent-related events due to exacerbated inflammatory response and delayed arterial healing,” Dr. Pilgrim said. The theoretical advantages of polymer that biodegrades include “mitigation of the arterial injury, facilitation of endothelialization, and reduced intimal hyperplasia,” he explained at the meeting sponsored by MedStar Heart & Vascular Institute.
The rates of cardiac death (2.9% vs. 3.2%) and target-vessel MI (2.9% vs. 3.2%) were lower for the biodegradable polymer stent, but not significantly. However, the rates of target-vessel revascularization at 2 years were 2.5% versus 5.1%. The associated rate ratio of 0.52 favoring the biodegradable stent was significant.
Similar results favoring the biodegradable polymer stent were observed at 1 year, but those earlier results factored in historical data from the BIOSCIENCE trial, using a Bayesian analysis, to improve the power of the comparison. In this 2-year analysis, the superiority of the biodegradable polymer stent to the durable polymer stent remained statistically significant even when excluding those historical controls.
The advantage of the biodegradable polymer stent was confined to “device-oriented” outcomes, according to Dr. Pilgrim. When compared for important patient-oriented outcomes at 2 years, there were no significant differences. Rather, several were numerically more common, including death (4.2% vs. 3.8%) and MI (3.7% vs. 3.1%) in those who were randomized to the biodegradable polymer stent.
But these types of clinical outcomes are not necessarily related to stent assignment because “up to one-half of all events over the 2 years of follow-up were unrelated to the stent implanted,” Dr. Pilgrim said. He noted that high rates of events unrelated to the implanted stent have also been seen in follow-up of other comparative stent trials.
The superiority of the biodegradable stent is noteworthy. Although Dr. Pilgrim described the BIOSTEMI trial as “the first head-to-head comparison of two new-generation drug-eluting stents in patients undergoing a primary percutaneous intervention for acute myocardial infarction,” there have been several studies comparing stents for other indications. Significant differences have been uncommon.
“Over the last 10 years, we have seen a number of noninferiority stent trials, but only now are we seeing some superiority differences. This is a move in the right direction,” commented Sripal Bangalore, MD, director of the cardiovascular outcomes group, New York University.
However, he, like others, questioned whether the difference in outcomes in this trial could be fully attributed to the type of polymer. He noted that all stents could be characterized by multiple small and large differences in design and composition. Any specific characteristic, such as biodegradable polymer, might be an important contributor but not an isolated factor in the outcomes observed.
On the day that the 2-year results of the BIOSTEMI trial were presented at the CRT 2021 meeting they were simultaneously published in JACC: Cardiovascular Interventions.
Dr. Pilgrim reports financial relationships with several companies that make stent devices, including Biotronik and Boston Scientific. Dr. Bangalore reports no potential conflicts of interest.
FROM CRT 2021
BASILICA technique prevents TAVR-related coronary obstruction in registry study
For patients undergoing transcatheter aortic valve replacement (TAVR), the intentional laceration technique of diseased valve leaflets called BASILICA is effective and reasonably safe for preventing coronary artery obstruction, according to a late-breaking study presented at CRT 2021 sponsored by MedStar Heart & Vascular Institute.
In a series of 214 patients entered into a registry over a recent 30-month period, leaflets posing risk were effectively traversed with the technique in 95% of cases, and complication rates were reasonably low with 30-day stroke and death rate of 3.4%, reported Jaffar M. Khan, BMBCH, PhD, cardiovascular branch of the National Heart, Lung, and Blood Institute.
The rate of complications is acceptable given the large potential risk, according to Dr. Khan. If coronary obstruction occurs, reported mortality rates have been as high as 50%. The 1-year survival rate in the registry following BASILICA was 84%.
Results should ‘push people toward BASILICA’
The acronym BASILICA stands for bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction. In the procedure, performed immediately before TAVR, guidewires are introduced to first traverse and then lacerate aortic leaflets threatening obstruction of a coronary artery.
In cases where diseased valve leaflets pose a risk of coronary obstruction, most interventionalists “are comfortable with surgery when patients are at low or intermediate risk, but the choices for high-risk patients are a snorkel stent or BASILICA. Given the limits of snorkel stenting, these data should be reassuring and push people toward BASILICA,” Dr. Khan said.
The 214 patients were entered into the registry from June 2015 to December 2020. The mean age was 74.9 years. Of valves treated, 73% were failed bioprosthetic devices. The remaining were native aortic valves. Solo BASILICA was performed in most patients, but 21.5% underwent a doppio procedure, meaning the laceration of two leaflets.
Despite BASILICA, 10 patients (4.7%) had some degree of coronary obstruction, including 5 with partial obstruction of the main coronary artery and 1 with partial obstruction of the right coronary artery. All of these partial obstructions were successfully treated with orthotopic stents.
An obstruction of the right coronary artery was successfully treated with balloon angioplasty. Another patient with significant left main coronary artery obstruction required cardiopulmonary bypass but was successfully treated with snorkel stenting. Of two patients with complete obstruction of the left main coronary artery caused by the skirt of the TAVR device, one died in hospital despite several maneuvers to restore perfusion.
Procedural complications included a mitral chord laceration, which subsequently led to valve replacement, and three guidewire transversals into surrounding tissue that did not result in serious sequelae. Hypotension requiring pressors occurred in 8.5%.
There was a “slight trend” for worse outcomes in those undergoing doppio rather than solo BASILICA, but the difference did not reach statistical significance. Cerebral embolic protection was offered to a minority of patients in this series. The trend for a lower risk of stroke in this group did not reach significance, Dr. Khan reported.
Best for high-volume centers, for now
Although these data support the conclusion that BASILICA “is feasible in a real-world setting,” Dr. Khan acknowledged that BASILICA might not be appropriate at low-volume centers. Dr. Khan cited data that indicates obstruction of a coronary artery by a diseased leaflet occurs in less than 1% of TAVR cases.
“Not every site doing a handful of TAVRs is going to want to tackle these cases, but those working in a high-volume center will from time to time encounter patients with coronary obstruction or who are at increased risk,” Dr. Khan said.
In North America, there has been a proctoring program to disseminate the skills required to perform BASILICA, according to Dr. Khan, who explained that proctors typically participate in two or three cases before these are performed without supervision.
So far, the uptake of BASILICA has been limited.
“BASILICA has not been catching on in EUROPE,” said Didier F. Loulmet, MD, chief of cardiac surgery at Tisch Hospital, New York University Langone Health. There might be several reasons, but Dr. Loulmet said that lack of a comparable proctoring program is one factor.”
“This is a relatively complex procedure performed in a small number of patients, so building up expertise is quite a challenge, particularly in small centers,” he added. He encouraged proctoring as “the way that it has to be propagated.”
The results presented by Dr. Khan on March 6 at CRT 2021 were simultaneously published in JACC: Cardiovascular Interventions.
Dr. Khan has patents on several devices, including catheters to lacerate valve leaflet. Dr. Loulmet reported no potential conflicts of interest.
For patients undergoing transcatheter aortic valve replacement (TAVR), the intentional laceration technique of diseased valve leaflets called BASILICA is effective and reasonably safe for preventing coronary artery obstruction, according to a late-breaking study presented at CRT 2021 sponsored by MedStar Heart & Vascular Institute.
In a series of 214 patients entered into a registry over a recent 30-month period, leaflets posing risk were effectively traversed with the technique in 95% of cases, and complication rates were reasonably low with 30-day stroke and death rate of 3.4%, reported Jaffar M. Khan, BMBCH, PhD, cardiovascular branch of the National Heart, Lung, and Blood Institute.
The rate of complications is acceptable given the large potential risk, according to Dr. Khan. If coronary obstruction occurs, reported mortality rates have been as high as 50%. The 1-year survival rate in the registry following BASILICA was 84%.
Results should ‘push people toward BASILICA’
The acronym BASILICA stands for bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction. In the procedure, performed immediately before TAVR, guidewires are introduced to first traverse and then lacerate aortic leaflets threatening obstruction of a coronary artery.
In cases where diseased valve leaflets pose a risk of coronary obstruction, most interventionalists “are comfortable with surgery when patients are at low or intermediate risk, but the choices for high-risk patients are a snorkel stent or BASILICA. Given the limits of snorkel stenting, these data should be reassuring and push people toward BASILICA,” Dr. Khan said.
The 214 patients were entered into the registry from June 2015 to December 2020. The mean age was 74.9 years. Of valves treated, 73% were failed bioprosthetic devices. The remaining were native aortic valves. Solo BASILICA was performed in most patients, but 21.5% underwent a doppio procedure, meaning the laceration of two leaflets.
Despite BASILICA, 10 patients (4.7%) had some degree of coronary obstruction, including 5 with partial obstruction of the main coronary artery and 1 with partial obstruction of the right coronary artery. All of these partial obstructions were successfully treated with orthotopic stents.
An obstruction of the right coronary artery was successfully treated with balloon angioplasty. Another patient with significant left main coronary artery obstruction required cardiopulmonary bypass but was successfully treated with snorkel stenting. Of two patients with complete obstruction of the left main coronary artery caused by the skirt of the TAVR device, one died in hospital despite several maneuvers to restore perfusion.
Procedural complications included a mitral chord laceration, which subsequently led to valve replacement, and three guidewire transversals into surrounding tissue that did not result in serious sequelae. Hypotension requiring pressors occurred in 8.5%.
There was a “slight trend” for worse outcomes in those undergoing doppio rather than solo BASILICA, but the difference did not reach statistical significance. Cerebral embolic protection was offered to a minority of patients in this series. The trend for a lower risk of stroke in this group did not reach significance, Dr. Khan reported.
Best for high-volume centers, for now
Although these data support the conclusion that BASILICA “is feasible in a real-world setting,” Dr. Khan acknowledged that BASILICA might not be appropriate at low-volume centers. Dr. Khan cited data that indicates obstruction of a coronary artery by a diseased leaflet occurs in less than 1% of TAVR cases.
“Not every site doing a handful of TAVRs is going to want to tackle these cases, but those working in a high-volume center will from time to time encounter patients with coronary obstruction or who are at increased risk,” Dr. Khan said.
In North America, there has been a proctoring program to disseminate the skills required to perform BASILICA, according to Dr. Khan, who explained that proctors typically participate in two or three cases before these are performed without supervision.
So far, the uptake of BASILICA has been limited.
“BASILICA has not been catching on in EUROPE,” said Didier F. Loulmet, MD, chief of cardiac surgery at Tisch Hospital, New York University Langone Health. There might be several reasons, but Dr. Loulmet said that lack of a comparable proctoring program is one factor.”
“This is a relatively complex procedure performed in a small number of patients, so building up expertise is quite a challenge, particularly in small centers,” he added. He encouraged proctoring as “the way that it has to be propagated.”
The results presented by Dr. Khan on March 6 at CRT 2021 were simultaneously published in JACC: Cardiovascular Interventions.
Dr. Khan has patents on several devices, including catheters to lacerate valve leaflet. Dr. Loulmet reported no potential conflicts of interest.
For patients undergoing transcatheter aortic valve replacement (TAVR), the intentional laceration technique of diseased valve leaflets called BASILICA is effective and reasonably safe for preventing coronary artery obstruction, according to a late-breaking study presented at CRT 2021 sponsored by MedStar Heart & Vascular Institute.
In a series of 214 patients entered into a registry over a recent 30-month period, leaflets posing risk were effectively traversed with the technique in 95% of cases, and complication rates were reasonably low with 30-day stroke and death rate of 3.4%, reported Jaffar M. Khan, BMBCH, PhD, cardiovascular branch of the National Heart, Lung, and Blood Institute.
The rate of complications is acceptable given the large potential risk, according to Dr. Khan. If coronary obstruction occurs, reported mortality rates have been as high as 50%. The 1-year survival rate in the registry following BASILICA was 84%.
Results should ‘push people toward BASILICA’
The acronym BASILICA stands for bioprosthetic or native aortic scallop intentional laceration to prevent iatrogenic coronary artery obstruction. In the procedure, performed immediately before TAVR, guidewires are introduced to first traverse and then lacerate aortic leaflets threatening obstruction of a coronary artery.
In cases where diseased valve leaflets pose a risk of coronary obstruction, most interventionalists “are comfortable with surgery when patients are at low or intermediate risk, but the choices for high-risk patients are a snorkel stent or BASILICA. Given the limits of snorkel stenting, these data should be reassuring and push people toward BASILICA,” Dr. Khan said.
The 214 patients were entered into the registry from June 2015 to December 2020. The mean age was 74.9 years. Of valves treated, 73% were failed bioprosthetic devices. The remaining were native aortic valves. Solo BASILICA was performed in most patients, but 21.5% underwent a doppio procedure, meaning the laceration of two leaflets.
Despite BASILICA, 10 patients (4.7%) had some degree of coronary obstruction, including 5 with partial obstruction of the main coronary artery and 1 with partial obstruction of the right coronary artery. All of these partial obstructions were successfully treated with orthotopic stents.
An obstruction of the right coronary artery was successfully treated with balloon angioplasty. Another patient with significant left main coronary artery obstruction required cardiopulmonary bypass but was successfully treated with snorkel stenting. Of two patients with complete obstruction of the left main coronary artery caused by the skirt of the TAVR device, one died in hospital despite several maneuvers to restore perfusion.
Procedural complications included a mitral chord laceration, which subsequently led to valve replacement, and three guidewire transversals into surrounding tissue that did not result in serious sequelae. Hypotension requiring pressors occurred in 8.5%.
There was a “slight trend” for worse outcomes in those undergoing doppio rather than solo BASILICA, but the difference did not reach statistical significance. Cerebral embolic protection was offered to a minority of patients in this series. The trend for a lower risk of stroke in this group did not reach significance, Dr. Khan reported.
Best for high-volume centers, for now
Although these data support the conclusion that BASILICA “is feasible in a real-world setting,” Dr. Khan acknowledged that BASILICA might not be appropriate at low-volume centers. Dr. Khan cited data that indicates obstruction of a coronary artery by a diseased leaflet occurs in less than 1% of TAVR cases.
“Not every site doing a handful of TAVRs is going to want to tackle these cases, but those working in a high-volume center will from time to time encounter patients with coronary obstruction or who are at increased risk,” Dr. Khan said.
In North America, there has been a proctoring program to disseminate the skills required to perform BASILICA, according to Dr. Khan, who explained that proctors typically participate in two or three cases before these are performed without supervision.
So far, the uptake of BASILICA has been limited.
“BASILICA has not been catching on in EUROPE,” said Didier F. Loulmet, MD, chief of cardiac surgery at Tisch Hospital, New York University Langone Health. There might be several reasons, but Dr. Loulmet said that lack of a comparable proctoring program is one factor.”
“This is a relatively complex procedure performed in a small number of patients, so building up expertise is quite a challenge, particularly in small centers,” he added. He encouraged proctoring as “the way that it has to be propagated.”
The results presented by Dr. Khan on March 6 at CRT 2021 were simultaneously published in JACC: Cardiovascular Interventions.
Dr. Khan has patents on several devices, including catheters to lacerate valve leaflet. Dr. Loulmet reported no potential conflicts of interest.
FROM CRT 2021
DOACs offered after heart valve surgery despite absence of data
Direct oral anticoagulants (DOACs) are used in about 1% of patients undergoing surgical mechanical aortic and mitral valve replacement, but in up to 6% of surgical bioprosthetic valve replacements, according to registry data presented at CRT 2021.
In an analysis of the Society of Thoracic Surgery (STS) registry during 2014-2017, DOAC use increased steadily among those undergoing surgical bioprosthetic valve replacement, reaching a number that is potentially clinically significant, according to Ankur Kalra, MD, an interventional cardiologist at Akron General Hospital who has an academic appointment at the Cleveland Clinic.
There was no increase in the use of DOACs observed among patients undergoing mechanical valve replacement, “but even if the number is 1%, they should probably not be used at all until we accrue more data,” Dr. Kalra said.
DOACs discouraged in patients with mechanical or bioprosthetic valves
In Food and Drug Administration labeling, DOACs are contraindicated or not recommended. This can be traced to the randomized RE-ALIGN trial, which was stopped prematurely due to evidence of harm from a DOAC, according to Dr. Kalra.
In RE-ALIGN, which enrolled patients undergoing mechanical aortic or mitral valve replacement, dabigatran was associated not only with more bleeding events than warfarin, but also more thromboembolic events.
There are no randomized data comparing the factor Xa inhibitors rivaroxaban or apixaban to warfarin in heart valve surgery, but Dr. Kalra noted cautionary language is found in the labeling of both, “perhaps due to the RE-ALIGN data.”
Registry shows trends in prescribing
In the STS registry data, 193 (1.1%) of the 18,142 patients undergoing mechanical aortic valve surgery, 139 (1.0%) of the 13,942 patients undergoing mechanical mitral valve surgery, 5,625 (4.7%) of the 116,203 patients undergoing aortic bioprosthetic aortic valve surgery, and 2,180 (5.9%) of the 39,243 patients undergoing bioprosthetic mitral valve surgery were on a DOAC at discharge.
Among those receiving a mechanical value and placed on a DOAC, about two-thirds were on a factor Xa inhibitor rather than dabigatran. For those receiving a bioprosthetic value, the proportion was greater than 80%. Dr. Kalra speculated that the RE-ALIGN trial might be the reason factor Xa inhibitors were favored.
In both types of valves, whether mechanical or bioprosthetic, more comorbidities predicted a greater likelihood of receiving a DOAC rather than warfarin. For those receiving mechanical values, the comorbidities with a significant association with greater DOAC use included hypertension (P = .003), dyslipidemia (P = .02), arrhythmia (P < .001), and peripheral arterial disease (P < 0.001).
The same factors were significant for predicting increased likelihood of a DOAC following bioprosthetic valve replacement, but there were additional factors, including atrial fibrillation independent of other types of arrhythmias (P < .001), a factor not significant for mechanical valves, as well as diabetes (P < .001), cerebrovascular disease (P < .001), dialysis (P < .001), and endocarditis (P < .001).
“This is probably intuitive, but patients who were on a factor Xa inhibitor before their valve replacement were also more likely to be discharged on a factor Xa inhibitor,” Dr. Kalra said at the virtual meeting, sponsored by MedStar Heart & Vascular Institute.
The year-to-year increase in DOAC use among those undergoing bioprosthetic valve replacement over the study period, which was a significant trend, was not observed among those undergoing mechanical valve replacement. Rather, the 1% proportion remained stable over the study period.
“We wanted to look at outcomes, but we found that the STS database, which only includes data out to 30 days, is not structured for this type of analysis,” Dr. Kalra said. He was also concerned about the limitations of a comparison in which 1% of the sample was being compared to 99%.
Expert: One percent is ‘very small number’
David J. Cohen, MD, commented on the 1% figure, which was so low that a moderator questioned whether it could be due mostly to coding errors.
“This is a very, very small number so at some level it is reassuring that it is so low in the mechanical valves,” Dr. Cohen said. However, he was more circumspect about the larger number in bioprosthetic valves.
“I have always thought it was a bit strange there was a warning against using them in bioprosthetic valves, especially in the aortic position,” he said.
“The trials that established the benefits of DOACs were all in nonvalvular atrial fibrillation, but this did not mean non–aortic stenosis; it meant non–mitral valvular. There have been articles written about how that has been misinterpreted,” said Dr. Cohen, director of clinical and outcomes research at the Cardiovascular Research Foundation and director of academic affairs at St. Francis Hospital, Roslyn, N.Y.
For his part, Dr. Kalra reported that he does not consider DOACs in patients who have undergone a surgical mechanical valve replacement. For bioprosthetic valves, he “prefers” warfarin over DOACs.
Overall, the evidence from the registry led Dr. Kalra to suggest that physicians should continue to “exercise caution” in using DOACs instead of warfarin after any surgical valve replacement “until randomized clinical trials provide sufficient evidence” to make a judgment about relative efficacy and safety.
Results of the study were published online as a research letter in Jama Network Open after Dr. Kalra’s presentation. Dr. Kalra and Dr. Cohen report no potential conflicts of interest.
Direct oral anticoagulants (DOACs) are used in about 1% of patients undergoing surgical mechanical aortic and mitral valve replacement, but in up to 6% of surgical bioprosthetic valve replacements, according to registry data presented at CRT 2021.
In an analysis of the Society of Thoracic Surgery (STS) registry during 2014-2017, DOAC use increased steadily among those undergoing surgical bioprosthetic valve replacement, reaching a number that is potentially clinically significant, according to Ankur Kalra, MD, an interventional cardiologist at Akron General Hospital who has an academic appointment at the Cleveland Clinic.
There was no increase in the use of DOACs observed among patients undergoing mechanical valve replacement, “but even if the number is 1%, they should probably not be used at all until we accrue more data,” Dr. Kalra said.
DOACs discouraged in patients with mechanical or bioprosthetic valves
In Food and Drug Administration labeling, DOACs are contraindicated or not recommended. This can be traced to the randomized RE-ALIGN trial, which was stopped prematurely due to evidence of harm from a DOAC, according to Dr. Kalra.
In RE-ALIGN, which enrolled patients undergoing mechanical aortic or mitral valve replacement, dabigatran was associated not only with more bleeding events than warfarin, but also more thromboembolic events.
There are no randomized data comparing the factor Xa inhibitors rivaroxaban or apixaban to warfarin in heart valve surgery, but Dr. Kalra noted cautionary language is found in the labeling of both, “perhaps due to the RE-ALIGN data.”
Registry shows trends in prescribing
In the STS registry data, 193 (1.1%) of the 18,142 patients undergoing mechanical aortic valve surgery, 139 (1.0%) of the 13,942 patients undergoing mechanical mitral valve surgery, 5,625 (4.7%) of the 116,203 patients undergoing aortic bioprosthetic aortic valve surgery, and 2,180 (5.9%) of the 39,243 patients undergoing bioprosthetic mitral valve surgery were on a DOAC at discharge.
Among those receiving a mechanical value and placed on a DOAC, about two-thirds were on a factor Xa inhibitor rather than dabigatran. For those receiving a bioprosthetic value, the proportion was greater than 80%. Dr. Kalra speculated that the RE-ALIGN trial might be the reason factor Xa inhibitors were favored.
In both types of valves, whether mechanical or bioprosthetic, more comorbidities predicted a greater likelihood of receiving a DOAC rather than warfarin. For those receiving mechanical values, the comorbidities with a significant association with greater DOAC use included hypertension (P = .003), dyslipidemia (P = .02), arrhythmia (P < .001), and peripheral arterial disease (P < 0.001).
The same factors were significant for predicting increased likelihood of a DOAC following bioprosthetic valve replacement, but there were additional factors, including atrial fibrillation independent of other types of arrhythmias (P < .001), a factor not significant for mechanical valves, as well as diabetes (P < .001), cerebrovascular disease (P < .001), dialysis (P < .001), and endocarditis (P < .001).
“This is probably intuitive, but patients who were on a factor Xa inhibitor before their valve replacement were also more likely to be discharged on a factor Xa inhibitor,” Dr. Kalra said at the virtual meeting, sponsored by MedStar Heart & Vascular Institute.
The year-to-year increase in DOAC use among those undergoing bioprosthetic valve replacement over the study period, which was a significant trend, was not observed among those undergoing mechanical valve replacement. Rather, the 1% proportion remained stable over the study period.
“We wanted to look at outcomes, but we found that the STS database, which only includes data out to 30 days, is not structured for this type of analysis,” Dr. Kalra said. He was also concerned about the limitations of a comparison in which 1% of the sample was being compared to 99%.
Expert: One percent is ‘very small number’
David J. Cohen, MD, commented on the 1% figure, which was so low that a moderator questioned whether it could be due mostly to coding errors.
“This is a very, very small number so at some level it is reassuring that it is so low in the mechanical valves,” Dr. Cohen said. However, he was more circumspect about the larger number in bioprosthetic valves.
“I have always thought it was a bit strange there was a warning against using them in bioprosthetic valves, especially in the aortic position,” he said.
“The trials that established the benefits of DOACs were all in nonvalvular atrial fibrillation, but this did not mean non–aortic stenosis; it meant non–mitral valvular. There have been articles written about how that has been misinterpreted,” said Dr. Cohen, director of clinical and outcomes research at the Cardiovascular Research Foundation and director of academic affairs at St. Francis Hospital, Roslyn, N.Y.
For his part, Dr. Kalra reported that he does not consider DOACs in patients who have undergone a surgical mechanical valve replacement. For bioprosthetic valves, he “prefers” warfarin over DOACs.
Overall, the evidence from the registry led Dr. Kalra to suggest that physicians should continue to “exercise caution” in using DOACs instead of warfarin after any surgical valve replacement “until randomized clinical trials provide sufficient evidence” to make a judgment about relative efficacy and safety.
Results of the study were published online as a research letter in Jama Network Open after Dr. Kalra’s presentation. Dr. Kalra and Dr. Cohen report no potential conflicts of interest.
Direct oral anticoagulants (DOACs) are used in about 1% of patients undergoing surgical mechanical aortic and mitral valve replacement, but in up to 6% of surgical bioprosthetic valve replacements, according to registry data presented at CRT 2021.
In an analysis of the Society of Thoracic Surgery (STS) registry during 2014-2017, DOAC use increased steadily among those undergoing surgical bioprosthetic valve replacement, reaching a number that is potentially clinically significant, according to Ankur Kalra, MD, an interventional cardiologist at Akron General Hospital who has an academic appointment at the Cleveland Clinic.
There was no increase in the use of DOACs observed among patients undergoing mechanical valve replacement, “but even if the number is 1%, they should probably not be used at all until we accrue more data,” Dr. Kalra said.
DOACs discouraged in patients with mechanical or bioprosthetic valves
In Food and Drug Administration labeling, DOACs are contraindicated or not recommended. This can be traced to the randomized RE-ALIGN trial, which was stopped prematurely due to evidence of harm from a DOAC, according to Dr. Kalra.
In RE-ALIGN, which enrolled patients undergoing mechanical aortic or mitral valve replacement, dabigatran was associated not only with more bleeding events than warfarin, but also more thromboembolic events.
There are no randomized data comparing the factor Xa inhibitors rivaroxaban or apixaban to warfarin in heart valve surgery, but Dr. Kalra noted cautionary language is found in the labeling of both, “perhaps due to the RE-ALIGN data.”
Registry shows trends in prescribing
In the STS registry data, 193 (1.1%) of the 18,142 patients undergoing mechanical aortic valve surgery, 139 (1.0%) of the 13,942 patients undergoing mechanical mitral valve surgery, 5,625 (4.7%) of the 116,203 patients undergoing aortic bioprosthetic aortic valve surgery, and 2,180 (5.9%) of the 39,243 patients undergoing bioprosthetic mitral valve surgery were on a DOAC at discharge.
Among those receiving a mechanical value and placed on a DOAC, about two-thirds were on a factor Xa inhibitor rather than dabigatran. For those receiving a bioprosthetic value, the proportion was greater than 80%. Dr. Kalra speculated that the RE-ALIGN trial might be the reason factor Xa inhibitors were favored.
In both types of valves, whether mechanical or bioprosthetic, more comorbidities predicted a greater likelihood of receiving a DOAC rather than warfarin. For those receiving mechanical values, the comorbidities with a significant association with greater DOAC use included hypertension (P = .003), dyslipidemia (P = .02), arrhythmia (P < .001), and peripheral arterial disease (P < 0.001).
The same factors were significant for predicting increased likelihood of a DOAC following bioprosthetic valve replacement, but there were additional factors, including atrial fibrillation independent of other types of arrhythmias (P < .001), a factor not significant for mechanical valves, as well as diabetes (P < .001), cerebrovascular disease (P < .001), dialysis (P < .001), and endocarditis (P < .001).
“This is probably intuitive, but patients who were on a factor Xa inhibitor before their valve replacement were also more likely to be discharged on a factor Xa inhibitor,” Dr. Kalra said at the virtual meeting, sponsored by MedStar Heart & Vascular Institute.
The year-to-year increase in DOAC use among those undergoing bioprosthetic valve replacement over the study period, which was a significant trend, was not observed among those undergoing mechanical valve replacement. Rather, the 1% proportion remained stable over the study period.
“We wanted to look at outcomes, but we found that the STS database, which only includes data out to 30 days, is not structured for this type of analysis,” Dr. Kalra said. He was also concerned about the limitations of a comparison in which 1% of the sample was being compared to 99%.
Expert: One percent is ‘very small number’
David J. Cohen, MD, commented on the 1% figure, which was so low that a moderator questioned whether it could be due mostly to coding errors.
“This is a very, very small number so at some level it is reassuring that it is so low in the mechanical valves,” Dr. Cohen said. However, he was more circumspect about the larger number in bioprosthetic valves.
“I have always thought it was a bit strange there was a warning against using them in bioprosthetic valves, especially in the aortic position,” he said.
“The trials that established the benefits of DOACs were all in nonvalvular atrial fibrillation, but this did not mean non–aortic stenosis; it meant non–mitral valvular. There have been articles written about how that has been misinterpreted,” said Dr. Cohen, director of clinical and outcomes research at the Cardiovascular Research Foundation and director of academic affairs at St. Francis Hospital, Roslyn, N.Y.
For his part, Dr. Kalra reported that he does not consider DOACs in patients who have undergone a surgical mechanical valve replacement. For bioprosthetic valves, he “prefers” warfarin over DOACs.
Overall, the evidence from the registry led Dr. Kalra to suggest that physicians should continue to “exercise caution” in using DOACs instead of warfarin after any surgical valve replacement “until randomized clinical trials provide sufficient evidence” to make a judgment about relative efficacy and safety.
Results of the study were published online as a research letter in Jama Network Open after Dr. Kalra’s presentation. Dr. Kalra and Dr. Cohen report no potential conflicts of interest.
FROM CRT 2021
Cumulative exposure to high-potency topical steroid doses drives osteoporosis fractures
In support of previously published case reports, in a dose-response relationship.
In a stepwise manner, the hazard ratios for major osteoporotic fracture (MOF) were found to start climbing incrementally for those with a cumulative topical steroid dose equivalent of more than 500 g of mometasone furoate when compared with exposure of 200-499 g, according to the team of investigators from the University of Copenhagen.
“Use of these drugs is very common, and we found an estimated population-attributable risk of as much as 4.3%,” the investigators reported in the study, published in JAMA Dermatology.
The retrospective cohort study drew data from the Danish National Patient Registry, which covers 99% of the country’s population. It was linked to the Danish National Prescription Registry, which captures data on pharmacy-dispensed medications. Data collected from the beginning of 2003 to the end of 2017 were evaluated.
Exposures to potent or very potent topical corticosteroids were converted into a single standard with potency equivalent to 1 mg/g of mometasone furoate. Four strata of exposure were compared to a reference exposure of 200-499 g. These were 500-999 g, 1,000-1,999 g, 2,000-9,999 g, and 10,000 g or greater.
For the first strata, the small increased risk for MOF did not reach significance (HR, 1.01; 95% confidence interval, 0.99-1.03), but each of the others did. These climbed from a 5% greater risk (HR 1.05 95% CI 1.02-1.08) for a cumulative exposure of 1,000 to 1,999 g, to a 10% greater risk (HR, 1.10; 95% CI, 1.07-1.13) for a cumulative exposure of 2,000-9,999 g, and finally to a 27% greater risk (HR, 1.27; 95% CI, 1.19-1.35) for a cumulative exposure of 10,000 g or higher.
The study included more than 700,000 individuals exposed to topical mometasone at a potency equivalent of 200 g or more over the study period. The reference group (200-499 g) was the largest (317,907 individuals). The first strata (500-999 g) included 186,359 patients; the second (1,000-1,999 g), 111,203 patients; the third (2,000-9,999 g), 94,334 patients; and the fifth (10,000 g or more), 13,448 patients.
“A 3% increase in the relative risk of osteoporosis and MOF was observed per doubling of the TCS dose,” according to the investigators.
Patients exposed to doses of high-potency topical steroids that put them at risk of MOF is limited but substantial, according to the senior author, Alexander Egeberg, MD, PhD, of the department of dermatology and allergy at Herlev and Gentofte Hospital, Copenhagen.
“It is true that the risk is modest for the average user of topical steroids,” Dr. Egeberg said in an interview. However, despite the fact that topical steroids are intended for short-term use, “2% of all our users had been exposed to the equivalent of 10,000 g of mometasone, which mean 100 tubes of 100 g.”
If the other two strata at significantly increased risk of MOF (greater than 1,000 g) are included, an additional 28% of all users are facing the potential for clinically significant osteoporosis, according to the Danish data.
The adverse effect of steroids on bone metabolism has been established previously, and several studies have linked systemic corticosteroid exposure, including inhaled corticosteroids, with increased risk of osteoporotic fracture. For example, one study showed that patients with chronic obstructive pulmonary disease on daily inhaled doses of the equivalent of fluticasone at or above 1,000 mcg for more than 4 years had about a 10% increased risk of MOF relative to those not exposed.
The data associate topical steroids with increased risk of osteoporotic fracture, but Dr. Egeberg said osteoporosis is not the only reason to use topical steroids prudently.
“It is important to keep in mind that osteoporosis and fractures are at the extreme end of the side-effect profile and that other side effects, such as striae formation, skin thinning, and dysregulated diabetes, can occur with much lower quantities of topical steroids,” Dr. Egeberg said
For avoiding this risk, “there are no specific cutoffs” recommended for topical steroids in current guidelines, but dermatologists should be aware that many of the indications for topical steroids, such as psoriasis and atopic dermatitis, involve skin with an impaired barrier function, exposing patients to an increased likelihood of absorption, according to Dr. Egeberg.
“A general rule of thumb that we use is that, if a patient with persistent disease activity requires a new prescription of the equivalent of 100 g mometasone every 1-2 months, it might be worth considering if there is a suitable alternative,” Dr. Egeberg said.
In an accompanying editorial, Rebecca D. Jackson, MD, of the division of endocrinology, diabetes, and metabolism in the department of internal medicine at Ohio State University, Columbus, agreed that no guidelines specific to avoiding the risks of topical corticosteroids are currently available, but she advised clinicians to be considering these risks nonetheless. In general, she suggested that topical steroids, like oral steroids, should be used at “the lowest dose for the shortest duration necessary to manage the underlying medical condition.”
The correlation between topical corticosteroids and increased risk of osteoporotic fracture, although not established previously in a large study, is not surprising, according to Victoria Werth, MD, chief of dermatology at the Philadelphia Veterans Affairs Hospital and professor of dermatology at the University of Pennsylvania, also in Philadelphia.
“Systemic absorption of potent topical steroids has previously been demonstrated with a rapid decrease in serum cortisol levels,” Dr. Werth said in an interview. She indicated that concern about the risk of osteoporosis imposed by use of potent steroids over large body surface areas is appropriate.
To minimize this risk, “it is reasonable to use the lowest dose of steroid possible and to try to substitute other medications when possible,” she said.
Dr. Egeberg reported financial relationships with Abbvie, Almirall, Bristol-Myers Squibb, Dermavant Sciences, Galderma, Janssen Pharmaceuticals, Eli Lilly, Novartis, Pfizer, Samsung, Bioepis, and UCB. Five authors had disclosures related to some of those pharmaceutical companies and/or others. Dr. Jackson had no disclosures.
In support of previously published case reports, in a dose-response relationship.
In a stepwise manner, the hazard ratios for major osteoporotic fracture (MOF) were found to start climbing incrementally for those with a cumulative topical steroid dose equivalent of more than 500 g of mometasone furoate when compared with exposure of 200-499 g, according to the team of investigators from the University of Copenhagen.
“Use of these drugs is very common, and we found an estimated population-attributable risk of as much as 4.3%,” the investigators reported in the study, published in JAMA Dermatology.
The retrospective cohort study drew data from the Danish National Patient Registry, which covers 99% of the country’s population. It was linked to the Danish National Prescription Registry, which captures data on pharmacy-dispensed medications. Data collected from the beginning of 2003 to the end of 2017 were evaluated.
Exposures to potent or very potent topical corticosteroids were converted into a single standard with potency equivalent to 1 mg/g of mometasone furoate. Four strata of exposure were compared to a reference exposure of 200-499 g. These were 500-999 g, 1,000-1,999 g, 2,000-9,999 g, and 10,000 g or greater.
For the first strata, the small increased risk for MOF did not reach significance (HR, 1.01; 95% confidence interval, 0.99-1.03), but each of the others did. These climbed from a 5% greater risk (HR 1.05 95% CI 1.02-1.08) for a cumulative exposure of 1,000 to 1,999 g, to a 10% greater risk (HR, 1.10; 95% CI, 1.07-1.13) for a cumulative exposure of 2,000-9,999 g, and finally to a 27% greater risk (HR, 1.27; 95% CI, 1.19-1.35) for a cumulative exposure of 10,000 g or higher.
The study included more than 700,000 individuals exposed to topical mometasone at a potency equivalent of 200 g or more over the study period. The reference group (200-499 g) was the largest (317,907 individuals). The first strata (500-999 g) included 186,359 patients; the second (1,000-1,999 g), 111,203 patients; the third (2,000-9,999 g), 94,334 patients; and the fifth (10,000 g or more), 13,448 patients.
“A 3% increase in the relative risk of osteoporosis and MOF was observed per doubling of the TCS dose,” according to the investigators.
Patients exposed to doses of high-potency topical steroids that put them at risk of MOF is limited but substantial, according to the senior author, Alexander Egeberg, MD, PhD, of the department of dermatology and allergy at Herlev and Gentofte Hospital, Copenhagen.
“It is true that the risk is modest for the average user of topical steroids,” Dr. Egeberg said in an interview. However, despite the fact that topical steroids are intended for short-term use, “2% of all our users had been exposed to the equivalent of 10,000 g of mometasone, which mean 100 tubes of 100 g.”
If the other two strata at significantly increased risk of MOF (greater than 1,000 g) are included, an additional 28% of all users are facing the potential for clinically significant osteoporosis, according to the Danish data.
The adverse effect of steroids on bone metabolism has been established previously, and several studies have linked systemic corticosteroid exposure, including inhaled corticosteroids, with increased risk of osteoporotic fracture. For example, one study showed that patients with chronic obstructive pulmonary disease on daily inhaled doses of the equivalent of fluticasone at or above 1,000 mcg for more than 4 years had about a 10% increased risk of MOF relative to those not exposed.
The data associate topical steroids with increased risk of osteoporotic fracture, but Dr. Egeberg said osteoporosis is not the only reason to use topical steroids prudently.
“It is important to keep in mind that osteoporosis and fractures are at the extreme end of the side-effect profile and that other side effects, such as striae formation, skin thinning, and dysregulated diabetes, can occur with much lower quantities of topical steroids,” Dr. Egeberg said
For avoiding this risk, “there are no specific cutoffs” recommended for topical steroids in current guidelines, but dermatologists should be aware that many of the indications for topical steroids, such as psoriasis and atopic dermatitis, involve skin with an impaired barrier function, exposing patients to an increased likelihood of absorption, according to Dr. Egeberg.
“A general rule of thumb that we use is that, if a patient with persistent disease activity requires a new prescription of the equivalent of 100 g mometasone every 1-2 months, it might be worth considering if there is a suitable alternative,” Dr. Egeberg said.
In an accompanying editorial, Rebecca D. Jackson, MD, of the division of endocrinology, diabetes, and metabolism in the department of internal medicine at Ohio State University, Columbus, agreed that no guidelines specific to avoiding the risks of topical corticosteroids are currently available, but she advised clinicians to be considering these risks nonetheless. In general, she suggested that topical steroids, like oral steroids, should be used at “the lowest dose for the shortest duration necessary to manage the underlying medical condition.”
The correlation between topical corticosteroids and increased risk of osteoporotic fracture, although not established previously in a large study, is not surprising, according to Victoria Werth, MD, chief of dermatology at the Philadelphia Veterans Affairs Hospital and professor of dermatology at the University of Pennsylvania, also in Philadelphia.
“Systemic absorption of potent topical steroids has previously been demonstrated with a rapid decrease in serum cortisol levels,” Dr. Werth said in an interview. She indicated that concern about the risk of osteoporosis imposed by use of potent steroids over large body surface areas is appropriate.
To minimize this risk, “it is reasonable to use the lowest dose of steroid possible and to try to substitute other medications when possible,” she said.
Dr. Egeberg reported financial relationships with Abbvie, Almirall, Bristol-Myers Squibb, Dermavant Sciences, Galderma, Janssen Pharmaceuticals, Eli Lilly, Novartis, Pfizer, Samsung, Bioepis, and UCB. Five authors had disclosures related to some of those pharmaceutical companies and/or others. Dr. Jackson had no disclosures.
In support of previously published case reports, in a dose-response relationship.
In a stepwise manner, the hazard ratios for major osteoporotic fracture (MOF) were found to start climbing incrementally for those with a cumulative topical steroid dose equivalent of more than 500 g of mometasone furoate when compared with exposure of 200-499 g, according to the team of investigators from the University of Copenhagen.
“Use of these drugs is very common, and we found an estimated population-attributable risk of as much as 4.3%,” the investigators reported in the study, published in JAMA Dermatology.
The retrospective cohort study drew data from the Danish National Patient Registry, which covers 99% of the country’s population. It was linked to the Danish National Prescription Registry, which captures data on pharmacy-dispensed medications. Data collected from the beginning of 2003 to the end of 2017 were evaluated.
Exposures to potent or very potent topical corticosteroids were converted into a single standard with potency equivalent to 1 mg/g of mometasone furoate. Four strata of exposure were compared to a reference exposure of 200-499 g. These were 500-999 g, 1,000-1,999 g, 2,000-9,999 g, and 10,000 g or greater.
For the first strata, the small increased risk for MOF did not reach significance (HR, 1.01; 95% confidence interval, 0.99-1.03), but each of the others did. These climbed from a 5% greater risk (HR 1.05 95% CI 1.02-1.08) for a cumulative exposure of 1,000 to 1,999 g, to a 10% greater risk (HR, 1.10; 95% CI, 1.07-1.13) for a cumulative exposure of 2,000-9,999 g, and finally to a 27% greater risk (HR, 1.27; 95% CI, 1.19-1.35) for a cumulative exposure of 10,000 g or higher.
The study included more than 700,000 individuals exposed to topical mometasone at a potency equivalent of 200 g or more over the study period. The reference group (200-499 g) was the largest (317,907 individuals). The first strata (500-999 g) included 186,359 patients; the second (1,000-1,999 g), 111,203 patients; the third (2,000-9,999 g), 94,334 patients; and the fifth (10,000 g or more), 13,448 patients.
“A 3% increase in the relative risk of osteoporosis and MOF was observed per doubling of the TCS dose,” according to the investigators.
Patients exposed to doses of high-potency topical steroids that put them at risk of MOF is limited but substantial, according to the senior author, Alexander Egeberg, MD, PhD, of the department of dermatology and allergy at Herlev and Gentofte Hospital, Copenhagen.
“It is true that the risk is modest for the average user of topical steroids,” Dr. Egeberg said in an interview. However, despite the fact that topical steroids are intended for short-term use, “2% of all our users had been exposed to the equivalent of 10,000 g of mometasone, which mean 100 tubes of 100 g.”
If the other two strata at significantly increased risk of MOF (greater than 1,000 g) are included, an additional 28% of all users are facing the potential for clinically significant osteoporosis, according to the Danish data.
The adverse effect of steroids on bone metabolism has been established previously, and several studies have linked systemic corticosteroid exposure, including inhaled corticosteroids, with increased risk of osteoporotic fracture. For example, one study showed that patients with chronic obstructive pulmonary disease on daily inhaled doses of the equivalent of fluticasone at or above 1,000 mcg for more than 4 years had about a 10% increased risk of MOF relative to those not exposed.
The data associate topical steroids with increased risk of osteoporotic fracture, but Dr. Egeberg said osteoporosis is not the only reason to use topical steroids prudently.
“It is important to keep in mind that osteoporosis and fractures are at the extreme end of the side-effect profile and that other side effects, such as striae formation, skin thinning, and dysregulated diabetes, can occur with much lower quantities of topical steroids,” Dr. Egeberg said
For avoiding this risk, “there are no specific cutoffs” recommended for topical steroids in current guidelines, but dermatologists should be aware that many of the indications for topical steroids, such as psoriasis and atopic dermatitis, involve skin with an impaired barrier function, exposing patients to an increased likelihood of absorption, according to Dr. Egeberg.
“A general rule of thumb that we use is that, if a patient with persistent disease activity requires a new prescription of the equivalent of 100 g mometasone every 1-2 months, it might be worth considering if there is a suitable alternative,” Dr. Egeberg said.
In an accompanying editorial, Rebecca D. Jackson, MD, of the division of endocrinology, diabetes, and metabolism in the department of internal medicine at Ohio State University, Columbus, agreed that no guidelines specific to avoiding the risks of topical corticosteroids are currently available, but she advised clinicians to be considering these risks nonetheless. In general, she suggested that topical steroids, like oral steroids, should be used at “the lowest dose for the shortest duration necessary to manage the underlying medical condition.”
The correlation between topical corticosteroids and increased risk of osteoporotic fracture, although not established previously in a large study, is not surprising, according to Victoria Werth, MD, chief of dermatology at the Philadelphia Veterans Affairs Hospital and professor of dermatology at the University of Pennsylvania, also in Philadelphia.
“Systemic absorption of potent topical steroids has previously been demonstrated with a rapid decrease in serum cortisol levels,” Dr. Werth said in an interview. She indicated that concern about the risk of osteoporosis imposed by use of potent steroids over large body surface areas is appropriate.
To minimize this risk, “it is reasonable to use the lowest dose of steroid possible and to try to substitute other medications when possible,” she said.
Dr. Egeberg reported financial relationships with Abbvie, Almirall, Bristol-Myers Squibb, Dermavant Sciences, Galderma, Janssen Pharmaceuticals, Eli Lilly, Novartis, Pfizer, Samsung, Bioepis, and UCB. Five authors had disclosures related to some of those pharmaceutical companies and/or others. Dr. Jackson had no disclosures.
FROM JAMA DERMATOLOGY
Women and ACS: Focus on typical symptoms to improve outcomes
There are some differences in how women relative to men report symptoms of an acute coronary syndrome (ACS), but they should not be permitted to get in the way of prompt diagnosis and treatment, according to an expert review at the virtual Going Back to the Heart of Cardiology meeting.
“We need to get away from the idea that symptoms of a myocardial infarction in women are atypical, because women are also having typical symptoms,” said Martha Gulati, MD, chief of cardiology at the University of Arizona, Phoenix.
Sexes share key symptoms, but not treatment
Although “women are more likely to report additional symptoms,” chest pain “is pretty much equal between men and women” presenting with an ACS, according to Dr. Gulati.
There are several studies that have shown this, including the Variation in Recovery: Role of Gender on Outcomes of Young AMI patients (VIRGO). In VIRGO, which looked at ACS symptom presentation in younger patients (ages 18-55 years), 87.0% of women versus 89.5% of men presented with chest pain defined as pain, pressure, tightness, or discomfort.
Even among those who recognize that more women die of cardiovascular disease (CVD) disease than any other cause, nothing seems to erase the bias that women in an ED are less likely than men to be having a heart attack. About 60 million women in the United States have CVD, so no threat imposes a higher toll in morbidity and mortality.
In comparison, there are only about 3.5 million women with breast cancer. Even though this is a major cause of morbidity and mortality in women, it is dwarfed by CVD, according to statistics cited by Dr. Gulati. Yet, the data show women get inferior care by guideline-based standards.
“After a myocardial infarction, women relative to men are less likely to get aspirin or beta-blockers within 24 hours, they are less likely to undergo any type of invasive procedure, and they are less likely to meet the door-to-balloon time or receive any reperfusion therapy,” Dr. Gulati said. After a CVD event, “the only thing women do better is to die.”
Additional symptoms may muddy the diagnostic waters
In the setting of ACS, the problem is not that women fail to report symptoms that should lead clinicians to consider CVD, but that they report additional symptoms. For the clinician less inclined to consider CVD in women, particularly younger women, there is a greater risk of going down the wrong diagnostic pathway.
In other words, women report symptoms consistent with CVD, “but it is a question of whether we are hearing it,” Dr. Gulati said.
In the VIRGO study, 61.9% of women versus 54.8% of men (P < .001) presented three or more symptoms in addition to chest pain, such as epigastric symptoms, discomfort in the arms or neck, or palpitations. Women were more likely than men to attribute the symptoms to stress or anxiety (20.9% vs. 11.8%; P < .001), while less likely to consider them a result of muscle pain (15.4% vs. 21.2%; P = .029).
There are other gender differences for ACS. For example, women are more likely than men to presented ischemia without obstruction, but Dr. Gulati emphasized that lack of obstruction is not a reason to dismiss the potential for an underlying CV cause.
‘Yentl syndrome’ persists
“Women should not need to present exactly like men to be taken seriously,” she said, describing the “Yentl syndrome,” which now has its own Wikipedia page. A cardiovascular version of this syndrome was first described 30 years ago. Based on a movie of a woman who cross dresses in order to be allowed to undertake Jewish studies, the term captures the societal failure to adapt care for women who do not present disease the same way that men do.
Overall, inadequate urgency to pursue potential symptoms of ACS in women is just another manifestation of the “bikini approach to women’s health,” according to Dr. Gulati. This describes the focus on the breast and reproductive system to the exclusion or other organs and anatomy. Dr. Gulati speculated that this might be the reason that clinicians have failed to apply ACS guidelines to women with the same rigor that they apply to men.
This is hardly a new issue. Calls for improving cardiovascular care in women have been increasing in volume for more than past 20 years, but the issue has proven persistent, according to Dr. Gulati. As an example, she noted that the same types of gaps in care and in outcome reported in a 2008 registry study had not much changed in an article published 8 years later.
The solution is not complex, according to Dr. Gulati. In the ED, guideline-directed diagnostic tests should be offered to any man or woman, including younger women, who present with chest pain, ignoring gender bias that threatens misinterpretation of patient history and symptoms. Once CVD is diagnosed as promptly in women as it is in men, guideline-directed intervention would be expected to reduce the gender gap in outcomes.
“By applying standardized protocols, it will help us to the same for women as we do for men,” Dr. Gulati said.
The meeting was sponsored by MedscapeLive. MedscapeLive and this news organization are owned by the same parent company.
There are some differences in how women relative to men report symptoms of an acute coronary syndrome (ACS), but they should not be permitted to get in the way of prompt diagnosis and treatment, according to an expert review at the virtual Going Back to the Heart of Cardiology meeting.
“We need to get away from the idea that symptoms of a myocardial infarction in women are atypical, because women are also having typical symptoms,” said Martha Gulati, MD, chief of cardiology at the University of Arizona, Phoenix.
Sexes share key symptoms, but not treatment
Although “women are more likely to report additional symptoms,” chest pain “is pretty much equal between men and women” presenting with an ACS, according to Dr. Gulati.
There are several studies that have shown this, including the Variation in Recovery: Role of Gender on Outcomes of Young AMI patients (VIRGO). In VIRGO, which looked at ACS symptom presentation in younger patients (ages 18-55 years), 87.0% of women versus 89.5% of men presented with chest pain defined as pain, pressure, tightness, or discomfort.
Even among those who recognize that more women die of cardiovascular disease (CVD) disease than any other cause, nothing seems to erase the bias that women in an ED are less likely than men to be having a heart attack. About 60 million women in the United States have CVD, so no threat imposes a higher toll in morbidity and mortality.
In comparison, there are only about 3.5 million women with breast cancer. Even though this is a major cause of morbidity and mortality in women, it is dwarfed by CVD, according to statistics cited by Dr. Gulati. Yet, the data show women get inferior care by guideline-based standards.
“After a myocardial infarction, women relative to men are less likely to get aspirin or beta-blockers within 24 hours, they are less likely to undergo any type of invasive procedure, and they are less likely to meet the door-to-balloon time or receive any reperfusion therapy,” Dr. Gulati said. After a CVD event, “the only thing women do better is to die.”
Additional symptoms may muddy the diagnostic waters
In the setting of ACS, the problem is not that women fail to report symptoms that should lead clinicians to consider CVD, but that they report additional symptoms. For the clinician less inclined to consider CVD in women, particularly younger women, there is a greater risk of going down the wrong diagnostic pathway.
In other words, women report symptoms consistent with CVD, “but it is a question of whether we are hearing it,” Dr. Gulati said.
In the VIRGO study, 61.9% of women versus 54.8% of men (P < .001) presented three or more symptoms in addition to chest pain, such as epigastric symptoms, discomfort in the arms or neck, or palpitations. Women were more likely than men to attribute the symptoms to stress or anxiety (20.9% vs. 11.8%; P < .001), while less likely to consider them a result of muscle pain (15.4% vs. 21.2%; P = .029).
There are other gender differences for ACS. For example, women are more likely than men to presented ischemia without obstruction, but Dr. Gulati emphasized that lack of obstruction is not a reason to dismiss the potential for an underlying CV cause.
‘Yentl syndrome’ persists
“Women should not need to present exactly like men to be taken seriously,” she said, describing the “Yentl syndrome,” which now has its own Wikipedia page. A cardiovascular version of this syndrome was first described 30 years ago. Based on a movie of a woman who cross dresses in order to be allowed to undertake Jewish studies, the term captures the societal failure to adapt care for women who do not present disease the same way that men do.
Overall, inadequate urgency to pursue potential symptoms of ACS in women is just another manifestation of the “bikini approach to women’s health,” according to Dr. Gulati. This describes the focus on the breast and reproductive system to the exclusion or other organs and anatomy. Dr. Gulati speculated that this might be the reason that clinicians have failed to apply ACS guidelines to women with the same rigor that they apply to men.
This is hardly a new issue. Calls for improving cardiovascular care in women have been increasing in volume for more than past 20 years, but the issue has proven persistent, according to Dr. Gulati. As an example, she noted that the same types of gaps in care and in outcome reported in a 2008 registry study had not much changed in an article published 8 years later.
The solution is not complex, according to Dr. Gulati. In the ED, guideline-directed diagnostic tests should be offered to any man or woman, including younger women, who present with chest pain, ignoring gender bias that threatens misinterpretation of patient history and symptoms. Once CVD is diagnosed as promptly in women as it is in men, guideline-directed intervention would be expected to reduce the gender gap in outcomes.
“By applying standardized protocols, it will help us to the same for women as we do for men,” Dr. Gulati said.
The meeting was sponsored by MedscapeLive. MedscapeLive and this news organization are owned by the same parent company.
There are some differences in how women relative to men report symptoms of an acute coronary syndrome (ACS), but they should not be permitted to get in the way of prompt diagnosis and treatment, according to an expert review at the virtual Going Back to the Heart of Cardiology meeting.
“We need to get away from the idea that symptoms of a myocardial infarction in women are atypical, because women are also having typical symptoms,” said Martha Gulati, MD, chief of cardiology at the University of Arizona, Phoenix.
Sexes share key symptoms, but not treatment
Although “women are more likely to report additional symptoms,” chest pain “is pretty much equal between men and women” presenting with an ACS, according to Dr. Gulati.
There are several studies that have shown this, including the Variation in Recovery: Role of Gender on Outcomes of Young AMI patients (VIRGO). In VIRGO, which looked at ACS symptom presentation in younger patients (ages 18-55 years), 87.0% of women versus 89.5% of men presented with chest pain defined as pain, pressure, tightness, or discomfort.
Even among those who recognize that more women die of cardiovascular disease (CVD) disease than any other cause, nothing seems to erase the bias that women in an ED are less likely than men to be having a heart attack. About 60 million women in the United States have CVD, so no threat imposes a higher toll in morbidity and mortality.
In comparison, there are only about 3.5 million women with breast cancer. Even though this is a major cause of morbidity and mortality in women, it is dwarfed by CVD, according to statistics cited by Dr. Gulati. Yet, the data show women get inferior care by guideline-based standards.
“After a myocardial infarction, women relative to men are less likely to get aspirin or beta-blockers within 24 hours, they are less likely to undergo any type of invasive procedure, and they are less likely to meet the door-to-balloon time or receive any reperfusion therapy,” Dr. Gulati said. After a CVD event, “the only thing women do better is to die.”
Additional symptoms may muddy the diagnostic waters
In the setting of ACS, the problem is not that women fail to report symptoms that should lead clinicians to consider CVD, but that they report additional symptoms. For the clinician less inclined to consider CVD in women, particularly younger women, there is a greater risk of going down the wrong diagnostic pathway.
In other words, women report symptoms consistent with CVD, “but it is a question of whether we are hearing it,” Dr. Gulati said.
In the VIRGO study, 61.9% of women versus 54.8% of men (P < .001) presented three or more symptoms in addition to chest pain, such as epigastric symptoms, discomfort in the arms or neck, or palpitations. Women were more likely than men to attribute the symptoms to stress or anxiety (20.9% vs. 11.8%; P < .001), while less likely to consider them a result of muscle pain (15.4% vs. 21.2%; P = .029).
There are other gender differences for ACS. For example, women are more likely than men to presented ischemia without obstruction, but Dr. Gulati emphasized that lack of obstruction is not a reason to dismiss the potential for an underlying CV cause.
‘Yentl syndrome’ persists
“Women should not need to present exactly like men to be taken seriously,” she said, describing the “Yentl syndrome,” which now has its own Wikipedia page. A cardiovascular version of this syndrome was first described 30 years ago. Based on a movie of a woman who cross dresses in order to be allowed to undertake Jewish studies, the term captures the societal failure to adapt care for women who do not present disease the same way that men do.
Overall, inadequate urgency to pursue potential symptoms of ACS in women is just another manifestation of the “bikini approach to women’s health,” according to Dr. Gulati. This describes the focus on the breast and reproductive system to the exclusion or other organs and anatomy. Dr. Gulati speculated that this might be the reason that clinicians have failed to apply ACS guidelines to women with the same rigor that they apply to men.
This is hardly a new issue. Calls for improving cardiovascular care in women have been increasing in volume for more than past 20 years, but the issue has proven persistent, according to Dr. Gulati. As an example, she noted that the same types of gaps in care and in outcome reported in a 2008 registry study had not much changed in an article published 8 years later.
The solution is not complex, according to Dr. Gulati. In the ED, guideline-directed diagnostic tests should be offered to any man or woman, including younger women, who present with chest pain, ignoring gender bias that threatens misinterpretation of patient history and symptoms. Once CVD is diagnosed as promptly in women as it is in men, guideline-directed intervention would be expected to reduce the gender gap in outcomes.
“By applying standardized protocols, it will help us to the same for women as we do for men,” Dr. Gulati said.
The meeting was sponsored by MedscapeLive. MedscapeLive and this news organization are owned by the same parent company.
FROM GOING BACK TO THE HEART OF CARDIOLOGY
In head-to-head trial, two biologics differ markedly for control of psoriasis
with other biologics, according to data from two simultaneously published trials, one of which was a head-to-head comparison with ustekinumab.
In the head-to-head trial called BE VIVID, which included a placebo arm, there was a large advantage of bimekizumab over ustekinumab, a biologic that targets IL-12 and IL-23 and is approved for treating psoriasis, for both coprimary endpoints, according to a multinational group of investigators led by Kristian Reich, MD, PhD, professor of dermatology at the University Medical Center, Hamburg-Eppendorf, Germany.
The proportion of patients with skin clearance was not only greater but faster, “with responses observed after one dose,” Dr. Reich and coinvestigators reported.
The data from the BE VIVID trial was published simultaneously with the BE READY trial, which was placebo-controlled but did not include an active comparator.
Evaluated at week 16, the coprimary endpoints in both studies were skin clearance as measured by a Psoriasis Area Severity Index greater than 90% (PASI 90) and Investigators Global Assessment (IGA) score of 0 (clear) or 1 (almost clear).
In BE VIVID, 567 patients were randomized in 11 countries, including the United States. The dose of bimekizumab was 320 mg administered subcutaneously every 4 weeks. In a randomization scheme of 4:2:1, half as many patients (163) were randomized to ustekinumab (Stelara), which was administered in weight-based dosing of 45 mg or 90 mg at enrollment, at 4 weeks, and then every 12 weeks. The placebo arm had 83 patients. All were switched to bimekizumab at 16 weeks.
At week 16, PASI 90 was achieved in 85% of patients randomized to bimekizumab, compared with 50% of patients randomized to ustekinumab (P < .0001). The rate in the placebo group was 5%.
The bimekizumab advantage for an IGA response of 0 or 1 was of similar magnitude, relative to ustekinumab (84% vs. 53%; P < .0001) and placebo (5%). All secondary efficacy endpoints, such as PASI 90 at week 12 (85% vs. 44%) and PASI 100 at week 16 (59% vs. 21%), favored bimekizumab over ustekinumab.
In the BE READY trial, which evaluated the same dose and schedule of bimekizumab, the rates of PASI 90 at week 16 were 91% and 1% (P < .0001) for the experimental arm and placebo, respectively. The proportion of patients with an IGA score of 0 or 1 were 93% and 1% (P < .0001), respectively.
In BE READY, patients who achieved PASI 90 at week 16 were reallocated to receive bimekizumab every 4 weeks, bimekizumab every 8 weeks (also 320 mg), or placebo. Both schedules of bimekizumab maintained responses through week 56, according to the authors, led by Kenneth B. Gordon, MD, professor and chair of dermatology, Medical College of Wisconsin, Milwaukee.
In both trials, safety was evaluated over the first 16 weeks as well as over a subsequent maintenance period, which extended to 52 weeks in BE VIVID and 56 weeks in BE READY. For bimekizumab, oral candidiasis was the most common treatment-related adverse event. In BE VIVID, this adverse event was reported in 9% of bimekizumab patients, compared with 0% of either the ustekinumab or placebo groups, up to week 16. Out to week 52, the rates were 15% in the bimekizumab group and 1% in the ustekinumab group.
In the BE READY trial, the rates of oral candidiasis were 6% and 0% for bimekizumab and placebo, respectively, through week 16. Over the maintenance periods, the rates were 9% and 11% for the every-8-week and every-4-week doses, respectively.
Discontinuation for adverse events was not higher on bimekizumab than placebo in either trial, nor was the proportion of serious treatment-emergent adverse events.
Nevertheless, the potential for adverse events was a key part of the discussion regarding the future role of bimekizumab, if approved, in an editorial that accompanied the publication of these studies.
“Bimekizumab might be our most effective biologic for psoriasis yet,” coauthors, William W. Huang, MD, PhD, associate professor of dermatology, and Steven R. Feldman, MD, PhD, professor of dermatology, both at Wake Forest University, Winston-Salem, NC, wrote in the editorial. “If the goal of psoriasis treatment is complete clearance, bimekizumab seems like a good option from an efficacy perspective.”
However, they noted that other IL-17 blockers, like secukinumab (Cosentyx) and brodalumab (Siliq), have been associated with risks, including the development of inflammatory bowel disease. In addition to the oral candidiasis seen in the BE VIVID and BE READY trials, they cautioned that other issues might arise with longer follow-up and greater numbers of patients exposed to this therapy.
In an interview, Dr. Feldman said adequately informed patients might be willing to accept these risks for the potential of greater efficacy, but he emphasized the need for appropriate warnings and education.
“We have a lot of very good treatments that offer patients an excellent chance of an excellent outcome – treatments that have been around and in use in large numbers of people for years,” Dr. Feldman said. “Unless the doctor and patient felt strongly about the need to use this new, perhaps more potent option, I would be personally inclined to use treatment with well-established safety profiles first.”
The senior author of the BE VIVID trial, Mark Lebwohl, MD, dean for clinical therapeutics and professor of dermatology, at the Icahn School of Medicine at Mount Sinai, New York, disagreed. He acknowledged that other agents targeting IL-17 have been associated with IBD, but risk of IBD is already elevated in patients with psoriasis and the risk appears to be lower with bimekizumab relative to prior agents in this class.
“Bimekizumab has now been studied in thousands of patients over several years. We can say with support from a sizable amount of data that IBD is very uncommon,” he said. While oral candidiasis is associated with bimekizumab, it is “easy to treat.”
Asked specifically if he will consider using bimekizumab as a first-line agent in psoriasis patients who are candidates for a biologic, Dr. Lebwohl said he would. Based on the evidence that this agent is more effective than other options and has manageable side effects, he believes it will be an important new treatment option.
Dr. Reich, Dr. Lebwohl, Dr. Gordon, and Dr. Feldman have financial relationships with multiple companies that produce therapies for psoriasis, including UCB Pharma, the sponsor of these studies.
with other biologics, according to data from two simultaneously published trials, one of which was a head-to-head comparison with ustekinumab.
In the head-to-head trial called BE VIVID, which included a placebo arm, there was a large advantage of bimekizumab over ustekinumab, a biologic that targets IL-12 and IL-23 and is approved for treating psoriasis, for both coprimary endpoints, according to a multinational group of investigators led by Kristian Reich, MD, PhD, professor of dermatology at the University Medical Center, Hamburg-Eppendorf, Germany.
The proportion of patients with skin clearance was not only greater but faster, “with responses observed after one dose,” Dr. Reich and coinvestigators reported.
The data from the BE VIVID trial was published simultaneously with the BE READY trial, which was placebo-controlled but did not include an active comparator.
Evaluated at week 16, the coprimary endpoints in both studies were skin clearance as measured by a Psoriasis Area Severity Index greater than 90% (PASI 90) and Investigators Global Assessment (IGA) score of 0 (clear) or 1 (almost clear).
In BE VIVID, 567 patients were randomized in 11 countries, including the United States. The dose of bimekizumab was 320 mg administered subcutaneously every 4 weeks. In a randomization scheme of 4:2:1, half as many patients (163) were randomized to ustekinumab (Stelara), which was administered in weight-based dosing of 45 mg or 90 mg at enrollment, at 4 weeks, and then every 12 weeks. The placebo arm had 83 patients. All were switched to bimekizumab at 16 weeks.
At week 16, PASI 90 was achieved in 85% of patients randomized to bimekizumab, compared with 50% of patients randomized to ustekinumab (P < .0001). The rate in the placebo group was 5%.
The bimekizumab advantage for an IGA response of 0 or 1 was of similar magnitude, relative to ustekinumab (84% vs. 53%; P < .0001) and placebo (5%). All secondary efficacy endpoints, such as PASI 90 at week 12 (85% vs. 44%) and PASI 100 at week 16 (59% vs. 21%), favored bimekizumab over ustekinumab.
In the BE READY trial, which evaluated the same dose and schedule of bimekizumab, the rates of PASI 90 at week 16 were 91% and 1% (P < .0001) for the experimental arm and placebo, respectively. The proportion of patients with an IGA score of 0 or 1 were 93% and 1% (P < .0001), respectively.
In BE READY, patients who achieved PASI 90 at week 16 were reallocated to receive bimekizumab every 4 weeks, bimekizumab every 8 weeks (also 320 mg), or placebo. Both schedules of bimekizumab maintained responses through week 56, according to the authors, led by Kenneth B. Gordon, MD, professor and chair of dermatology, Medical College of Wisconsin, Milwaukee.
In both trials, safety was evaluated over the first 16 weeks as well as over a subsequent maintenance period, which extended to 52 weeks in BE VIVID and 56 weeks in BE READY. For bimekizumab, oral candidiasis was the most common treatment-related adverse event. In BE VIVID, this adverse event was reported in 9% of bimekizumab patients, compared with 0% of either the ustekinumab or placebo groups, up to week 16. Out to week 52, the rates were 15% in the bimekizumab group and 1% in the ustekinumab group.
In the BE READY trial, the rates of oral candidiasis were 6% and 0% for bimekizumab and placebo, respectively, through week 16. Over the maintenance periods, the rates were 9% and 11% for the every-8-week and every-4-week doses, respectively.
Discontinuation for adverse events was not higher on bimekizumab than placebo in either trial, nor was the proportion of serious treatment-emergent adverse events.
Nevertheless, the potential for adverse events was a key part of the discussion regarding the future role of bimekizumab, if approved, in an editorial that accompanied the publication of these studies.
“Bimekizumab might be our most effective biologic for psoriasis yet,” coauthors, William W. Huang, MD, PhD, associate professor of dermatology, and Steven R. Feldman, MD, PhD, professor of dermatology, both at Wake Forest University, Winston-Salem, NC, wrote in the editorial. “If the goal of psoriasis treatment is complete clearance, bimekizumab seems like a good option from an efficacy perspective.”
However, they noted that other IL-17 blockers, like secukinumab (Cosentyx) and brodalumab (Siliq), have been associated with risks, including the development of inflammatory bowel disease. In addition to the oral candidiasis seen in the BE VIVID and BE READY trials, they cautioned that other issues might arise with longer follow-up and greater numbers of patients exposed to this therapy.
In an interview, Dr. Feldman said adequately informed patients might be willing to accept these risks for the potential of greater efficacy, but he emphasized the need for appropriate warnings and education.
“We have a lot of very good treatments that offer patients an excellent chance of an excellent outcome – treatments that have been around and in use in large numbers of people for years,” Dr. Feldman said. “Unless the doctor and patient felt strongly about the need to use this new, perhaps more potent option, I would be personally inclined to use treatment with well-established safety profiles first.”
The senior author of the BE VIVID trial, Mark Lebwohl, MD, dean for clinical therapeutics and professor of dermatology, at the Icahn School of Medicine at Mount Sinai, New York, disagreed. He acknowledged that other agents targeting IL-17 have been associated with IBD, but risk of IBD is already elevated in patients with psoriasis and the risk appears to be lower with bimekizumab relative to prior agents in this class.
“Bimekizumab has now been studied in thousands of patients over several years. We can say with support from a sizable amount of data that IBD is very uncommon,” he said. While oral candidiasis is associated with bimekizumab, it is “easy to treat.”
Asked specifically if he will consider using bimekizumab as a first-line agent in psoriasis patients who are candidates for a biologic, Dr. Lebwohl said he would. Based on the evidence that this agent is more effective than other options and has manageable side effects, he believes it will be an important new treatment option.
Dr. Reich, Dr. Lebwohl, Dr. Gordon, and Dr. Feldman have financial relationships with multiple companies that produce therapies for psoriasis, including UCB Pharma, the sponsor of these studies.
with other biologics, according to data from two simultaneously published trials, one of which was a head-to-head comparison with ustekinumab.
In the head-to-head trial called BE VIVID, which included a placebo arm, there was a large advantage of bimekizumab over ustekinumab, a biologic that targets IL-12 and IL-23 and is approved for treating psoriasis, for both coprimary endpoints, according to a multinational group of investigators led by Kristian Reich, MD, PhD, professor of dermatology at the University Medical Center, Hamburg-Eppendorf, Germany.
The proportion of patients with skin clearance was not only greater but faster, “with responses observed after one dose,” Dr. Reich and coinvestigators reported.
The data from the BE VIVID trial was published simultaneously with the BE READY trial, which was placebo-controlled but did not include an active comparator.
Evaluated at week 16, the coprimary endpoints in both studies were skin clearance as measured by a Psoriasis Area Severity Index greater than 90% (PASI 90) and Investigators Global Assessment (IGA) score of 0 (clear) or 1 (almost clear).
In BE VIVID, 567 patients were randomized in 11 countries, including the United States. The dose of bimekizumab was 320 mg administered subcutaneously every 4 weeks. In a randomization scheme of 4:2:1, half as many patients (163) were randomized to ustekinumab (Stelara), which was administered in weight-based dosing of 45 mg or 90 mg at enrollment, at 4 weeks, and then every 12 weeks. The placebo arm had 83 patients. All were switched to bimekizumab at 16 weeks.
At week 16, PASI 90 was achieved in 85% of patients randomized to bimekizumab, compared with 50% of patients randomized to ustekinumab (P < .0001). The rate in the placebo group was 5%.
The bimekizumab advantage for an IGA response of 0 or 1 was of similar magnitude, relative to ustekinumab (84% vs. 53%; P < .0001) and placebo (5%). All secondary efficacy endpoints, such as PASI 90 at week 12 (85% vs. 44%) and PASI 100 at week 16 (59% vs. 21%), favored bimekizumab over ustekinumab.
In the BE READY trial, which evaluated the same dose and schedule of bimekizumab, the rates of PASI 90 at week 16 were 91% and 1% (P < .0001) for the experimental arm and placebo, respectively. The proportion of patients with an IGA score of 0 or 1 were 93% and 1% (P < .0001), respectively.
In BE READY, patients who achieved PASI 90 at week 16 were reallocated to receive bimekizumab every 4 weeks, bimekizumab every 8 weeks (also 320 mg), or placebo. Both schedules of bimekizumab maintained responses through week 56, according to the authors, led by Kenneth B. Gordon, MD, professor and chair of dermatology, Medical College of Wisconsin, Milwaukee.
In both trials, safety was evaluated over the first 16 weeks as well as over a subsequent maintenance period, which extended to 52 weeks in BE VIVID and 56 weeks in BE READY. For bimekizumab, oral candidiasis was the most common treatment-related adverse event. In BE VIVID, this adverse event was reported in 9% of bimekizumab patients, compared with 0% of either the ustekinumab or placebo groups, up to week 16. Out to week 52, the rates were 15% in the bimekizumab group and 1% in the ustekinumab group.
In the BE READY trial, the rates of oral candidiasis were 6% and 0% for bimekizumab and placebo, respectively, through week 16. Over the maintenance periods, the rates were 9% and 11% for the every-8-week and every-4-week doses, respectively.
Discontinuation for adverse events was not higher on bimekizumab than placebo in either trial, nor was the proportion of serious treatment-emergent adverse events.
Nevertheless, the potential for adverse events was a key part of the discussion regarding the future role of bimekizumab, if approved, in an editorial that accompanied the publication of these studies.
“Bimekizumab might be our most effective biologic for psoriasis yet,” coauthors, William W. Huang, MD, PhD, associate professor of dermatology, and Steven R. Feldman, MD, PhD, professor of dermatology, both at Wake Forest University, Winston-Salem, NC, wrote in the editorial. “If the goal of psoriasis treatment is complete clearance, bimekizumab seems like a good option from an efficacy perspective.”
However, they noted that other IL-17 blockers, like secukinumab (Cosentyx) and brodalumab (Siliq), have been associated with risks, including the development of inflammatory bowel disease. In addition to the oral candidiasis seen in the BE VIVID and BE READY trials, they cautioned that other issues might arise with longer follow-up and greater numbers of patients exposed to this therapy.
In an interview, Dr. Feldman said adequately informed patients might be willing to accept these risks for the potential of greater efficacy, but he emphasized the need for appropriate warnings and education.
“We have a lot of very good treatments that offer patients an excellent chance of an excellent outcome – treatments that have been around and in use in large numbers of people for years,” Dr. Feldman said. “Unless the doctor and patient felt strongly about the need to use this new, perhaps more potent option, I would be personally inclined to use treatment with well-established safety profiles first.”
The senior author of the BE VIVID trial, Mark Lebwohl, MD, dean for clinical therapeutics and professor of dermatology, at the Icahn School of Medicine at Mount Sinai, New York, disagreed. He acknowledged that other agents targeting IL-17 have been associated with IBD, but risk of IBD is already elevated in patients with psoriasis and the risk appears to be lower with bimekizumab relative to prior agents in this class.
“Bimekizumab has now been studied in thousands of patients over several years. We can say with support from a sizable amount of data that IBD is very uncommon,” he said. While oral candidiasis is associated with bimekizumab, it is “easy to treat.”
Asked specifically if he will consider using bimekizumab as a first-line agent in psoriasis patients who are candidates for a biologic, Dr. Lebwohl said he would. Based on the evidence that this agent is more effective than other options and has manageable side effects, he believes it will be an important new treatment option.
Dr. Reich, Dr. Lebwohl, Dr. Gordon, and Dr. Feldman have financial relationships with multiple companies that produce therapies for psoriasis, including UCB Pharma, the sponsor of these studies.
FROM THE LANCET
Newer iPhones disable implanted defibrillators
Patients with an implantable cardioverter defibrillator (ICD) should be warned that some newer models of smartphones equipped with magnets, such as the iPhone 12, can disable their device, inhibiting its lifesaving functions, according to investigators who tested and confirmed this effect.
“Once the iPhone was brought close to the ICD over the left chest area, immediate suspension of ICD therapies was noted which persisted for the duration of the test,” reported the investigating team led by Joshua C. Greenberg, MD, who is an electrophysiology fellow at Henry Ford Hospital, Detroit. The results were published in Heart Rhythm.
The American Heart Association has already cautioned that magnetic fields can inhibit the pulse generators for ICDs and pacemakers. On the AHA website, there is a list of devices and their potential for functional interference, but cell phones and other common devices are identified as posing a low risk.
The most recent iPhone and perhaps other advanced smartphones appear to be different. According to the authors of a study that tested the iPhone 12, this model has a circular array of magnets around a central charging coil. This array interacts with Apple’s proprietary MagSafe technology, which accelerates charging. The magnets also serve to orient the phone on the charger and enable other MagSafe accessories.
The authors of the new study were concerned that this array of magnets might be sufficiently strong to interfere with ICDs or other devices at risk. In a previously published study, the strength of a magnetic field sufficient to interfere with implantable cardiac devices was estimated to be at least 10 gauss.
Tests were performed on a patient wearing a Medtronic ICD.
“Once the iPhone was brought close to the ICD over the left chest area, immediate suspension of ICD therapies was noted,” according to the authors of the study. The functional loss of the ICS persisted for the duration of proximity. It was reproduced multiple times and with multiple phone positions.
Previous studies have provided evidence that earlier models do not share this risk. In a study testing the iPhone 6 and an Apple Watch in 148 patients with various types of implantable electronic devices, including pacemakers, cardioverter defibrillators, resynchronization defibrillators, and resynchronization pacemakers, only one instance of interference was observed in 1,352 tests.
With wand telemetry, iPhone-induced interferences could be detected with the iPhone 6 in 14% of the patients, but these did not appear to be clinically meaningful, and this type of interference could not be detected with the Apple Watch, according to the report. The single observed interaction, which was between an iPhone 6 and a dual-chamber pacemaker, suggested device-device interactions are uncommon.
More recently, a woman with a single-chamber Medtronic ICD who went to sleep wearing an Apple Watch was awoken by warning beeps from her cardiac device, according to a case report published online. The Apple watch became the prime suspect in causing the ICD warning when proximity of the watch reproduced the warning during clinical examination. However, the magnetic interference was ultimately found to be emanating from the wristband, not the watch.
This case prompted additional studies with Fitbit and other Apple Watch wristbands. Both wristbands contain magnets used to track heart rate. Both were found capable of deactivating ICDs at distances of approximately 2 cm. On the basis of these results, the authors concluded that patients should be counseled about the risk posed by wristbands used in fitness tracking, concluding that they should be kept at least 6 inches away from ICDs and not worn while sleeping.
On their website, Apple maintains a page that specifically warns about the potential for interactions between iPhone 12s and medical devices . Although there is an acknowledgment that the iPhone12 contains more magnets than prior iPhone models, it is stated that iPhone 12 models are “not expected to pose a greater risk of magnetic interference to medical devices than prior iPhone models.” Nevertheless, the Apple instructions advise keeping the iPhone and MagSafe accessories more than 6 inches away from medical devices.
Dr. Greenberg and coinvestigators concluded that the iPhone 12 does pose a greater risk to the dysfunction of ICDs and other medical devices because of the more powerful magnets. As a result, the study brings forward “an important public health issue concerning the newer generation iPhone 12.”
Well aware of this issue and this study, Bruce L. Wilkoff, MD, director of cardiac pacing and tachyarrhythmia devices, Cleveland Clinic, agreed. He said the focus should not be restricted to the iPhone 12 series but other wearable devices as alluded to in the study.
“Pacemakers and implantable defibrillators are designed to respond to magnets for important reasons, but magnets have many common uses,” he said. These can change the function of the implantable cardiac devise, but “it is temporary and only when placed in close proximity.”
The solution is simple. “Patients should be careful to avoid locating these objects near these devices,” Dr. Wilkoff said.
However, the first step is awareness. According to the study authors, devices with magnets powerful enough to impair function of implantable devices, such as the iPhone 12 “can potentially inhibit lifesaving therapy.”
Patients should be counseled and provided with practical steps, according to the authors. This includes keeping these devices out of pockets near implantable devices. They called for more noise from makers of smartphones and other devices with strong enough magnets to alter pacemaker and ICD function, and they advised physicians to draw awareness to this issue.
Dr. Greenberg reported no potential conflicts of interest.
Patients with an implantable cardioverter defibrillator (ICD) should be warned that some newer models of smartphones equipped with magnets, such as the iPhone 12, can disable their device, inhibiting its lifesaving functions, according to investigators who tested and confirmed this effect.
“Once the iPhone was brought close to the ICD over the left chest area, immediate suspension of ICD therapies was noted which persisted for the duration of the test,” reported the investigating team led by Joshua C. Greenberg, MD, who is an electrophysiology fellow at Henry Ford Hospital, Detroit. The results were published in Heart Rhythm.
The American Heart Association has already cautioned that magnetic fields can inhibit the pulse generators for ICDs and pacemakers. On the AHA website, there is a list of devices and their potential for functional interference, but cell phones and other common devices are identified as posing a low risk.
The most recent iPhone and perhaps other advanced smartphones appear to be different. According to the authors of a study that tested the iPhone 12, this model has a circular array of magnets around a central charging coil. This array interacts with Apple’s proprietary MagSafe technology, which accelerates charging. The magnets also serve to orient the phone on the charger and enable other MagSafe accessories.
The authors of the new study were concerned that this array of magnets might be sufficiently strong to interfere with ICDs or other devices at risk. In a previously published study, the strength of a magnetic field sufficient to interfere with implantable cardiac devices was estimated to be at least 10 gauss.
Tests were performed on a patient wearing a Medtronic ICD.
“Once the iPhone was brought close to the ICD over the left chest area, immediate suspension of ICD therapies was noted,” according to the authors of the study. The functional loss of the ICS persisted for the duration of proximity. It was reproduced multiple times and with multiple phone positions.
Previous studies have provided evidence that earlier models do not share this risk. In a study testing the iPhone 6 and an Apple Watch in 148 patients with various types of implantable electronic devices, including pacemakers, cardioverter defibrillators, resynchronization defibrillators, and resynchronization pacemakers, only one instance of interference was observed in 1,352 tests.
With wand telemetry, iPhone-induced interferences could be detected with the iPhone 6 in 14% of the patients, but these did not appear to be clinically meaningful, and this type of interference could not be detected with the Apple Watch, according to the report. The single observed interaction, which was between an iPhone 6 and a dual-chamber pacemaker, suggested device-device interactions are uncommon.
More recently, a woman with a single-chamber Medtronic ICD who went to sleep wearing an Apple Watch was awoken by warning beeps from her cardiac device, according to a case report published online. The Apple watch became the prime suspect in causing the ICD warning when proximity of the watch reproduced the warning during clinical examination. However, the magnetic interference was ultimately found to be emanating from the wristband, not the watch.
This case prompted additional studies with Fitbit and other Apple Watch wristbands. Both wristbands contain magnets used to track heart rate. Both were found capable of deactivating ICDs at distances of approximately 2 cm. On the basis of these results, the authors concluded that patients should be counseled about the risk posed by wristbands used in fitness tracking, concluding that they should be kept at least 6 inches away from ICDs and not worn while sleeping.
On their website, Apple maintains a page that specifically warns about the potential for interactions between iPhone 12s and medical devices . Although there is an acknowledgment that the iPhone12 contains more magnets than prior iPhone models, it is stated that iPhone 12 models are “not expected to pose a greater risk of magnetic interference to medical devices than prior iPhone models.” Nevertheless, the Apple instructions advise keeping the iPhone and MagSafe accessories more than 6 inches away from medical devices.
Dr. Greenberg and coinvestigators concluded that the iPhone 12 does pose a greater risk to the dysfunction of ICDs and other medical devices because of the more powerful magnets. As a result, the study brings forward “an important public health issue concerning the newer generation iPhone 12.”
Well aware of this issue and this study, Bruce L. Wilkoff, MD, director of cardiac pacing and tachyarrhythmia devices, Cleveland Clinic, agreed. He said the focus should not be restricted to the iPhone 12 series but other wearable devices as alluded to in the study.
“Pacemakers and implantable defibrillators are designed to respond to magnets for important reasons, but magnets have many common uses,” he said. These can change the function of the implantable cardiac devise, but “it is temporary and only when placed in close proximity.”
The solution is simple. “Patients should be careful to avoid locating these objects near these devices,” Dr. Wilkoff said.
However, the first step is awareness. According to the study authors, devices with magnets powerful enough to impair function of implantable devices, such as the iPhone 12 “can potentially inhibit lifesaving therapy.”
Patients should be counseled and provided with practical steps, according to the authors. This includes keeping these devices out of pockets near implantable devices. They called for more noise from makers of smartphones and other devices with strong enough magnets to alter pacemaker and ICD function, and they advised physicians to draw awareness to this issue.
Dr. Greenberg reported no potential conflicts of interest.
Patients with an implantable cardioverter defibrillator (ICD) should be warned that some newer models of smartphones equipped with magnets, such as the iPhone 12, can disable their device, inhibiting its lifesaving functions, according to investigators who tested and confirmed this effect.
“Once the iPhone was brought close to the ICD over the left chest area, immediate suspension of ICD therapies was noted which persisted for the duration of the test,” reported the investigating team led by Joshua C. Greenberg, MD, who is an electrophysiology fellow at Henry Ford Hospital, Detroit. The results were published in Heart Rhythm.
The American Heart Association has already cautioned that magnetic fields can inhibit the pulse generators for ICDs and pacemakers. On the AHA website, there is a list of devices and their potential for functional interference, but cell phones and other common devices are identified as posing a low risk.
The most recent iPhone and perhaps other advanced smartphones appear to be different. According to the authors of a study that tested the iPhone 12, this model has a circular array of magnets around a central charging coil. This array interacts with Apple’s proprietary MagSafe technology, which accelerates charging. The magnets also serve to orient the phone on the charger and enable other MagSafe accessories.
The authors of the new study were concerned that this array of magnets might be sufficiently strong to interfere with ICDs or other devices at risk. In a previously published study, the strength of a magnetic field sufficient to interfere with implantable cardiac devices was estimated to be at least 10 gauss.
Tests were performed on a patient wearing a Medtronic ICD.
“Once the iPhone was brought close to the ICD over the left chest area, immediate suspension of ICD therapies was noted,” according to the authors of the study. The functional loss of the ICS persisted for the duration of proximity. It was reproduced multiple times and with multiple phone positions.
Previous studies have provided evidence that earlier models do not share this risk. In a study testing the iPhone 6 and an Apple Watch in 148 patients with various types of implantable electronic devices, including pacemakers, cardioverter defibrillators, resynchronization defibrillators, and resynchronization pacemakers, only one instance of interference was observed in 1,352 tests.
With wand telemetry, iPhone-induced interferences could be detected with the iPhone 6 in 14% of the patients, but these did not appear to be clinically meaningful, and this type of interference could not be detected with the Apple Watch, according to the report. The single observed interaction, which was between an iPhone 6 and a dual-chamber pacemaker, suggested device-device interactions are uncommon.
More recently, a woman with a single-chamber Medtronic ICD who went to sleep wearing an Apple Watch was awoken by warning beeps from her cardiac device, according to a case report published online. The Apple watch became the prime suspect in causing the ICD warning when proximity of the watch reproduced the warning during clinical examination. However, the magnetic interference was ultimately found to be emanating from the wristband, not the watch.
This case prompted additional studies with Fitbit and other Apple Watch wristbands. Both wristbands contain magnets used to track heart rate. Both were found capable of deactivating ICDs at distances of approximately 2 cm. On the basis of these results, the authors concluded that patients should be counseled about the risk posed by wristbands used in fitness tracking, concluding that they should be kept at least 6 inches away from ICDs and not worn while sleeping.
On their website, Apple maintains a page that specifically warns about the potential for interactions between iPhone 12s and medical devices . Although there is an acknowledgment that the iPhone12 contains more magnets than prior iPhone models, it is stated that iPhone 12 models are “not expected to pose a greater risk of magnetic interference to medical devices than prior iPhone models.” Nevertheless, the Apple instructions advise keeping the iPhone and MagSafe accessories more than 6 inches away from medical devices.
Dr. Greenberg and coinvestigators concluded that the iPhone 12 does pose a greater risk to the dysfunction of ICDs and other medical devices because of the more powerful magnets. As a result, the study brings forward “an important public health issue concerning the newer generation iPhone 12.”
Well aware of this issue and this study, Bruce L. Wilkoff, MD, director of cardiac pacing and tachyarrhythmia devices, Cleveland Clinic, agreed. He said the focus should not be restricted to the iPhone 12 series but other wearable devices as alluded to in the study.
“Pacemakers and implantable defibrillators are designed to respond to magnets for important reasons, but magnets have many common uses,” he said. These can change the function of the implantable cardiac devise, but “it is temporary and only when placed in close proximity.”
The solution is simple. “Patients should be careful to avoid locating these objects near these devices,” Dr. Wilkoff said.
However, the first step is awareness. According to the study authors, devices with magnets powerful enough to impair function of implantable devices, such as the iPhone 12 “can potentially inhibit lifesaving therapy.”
Patients should be counseled and provided with practical steps, according to the authors. This includes keeping these devices out of pockets near implantable devices. They called for more noise from makers of smartphones and other devices with strong enough magnets to alter pacemaker and ICD function, and they advised physicians to draw awareness to this issue.
Dr. Greenberg reported no potential conflicts of interest.
FROM HEART RHYTHM
Neprilysin, corin singled out for potential to guide heart failure therapy
Although not correlated with each other, increased levels of circulating according to prospective analysis involving 1,009 HF patients.
This implies that these enzymes might have value for individualizing care, including treatment of patients in heart failure with preserved ejection fraction (HFpEF), reported a team of investigators led by D.H. Frank Gommans, MD, PhD, department of cardiology, Radboud University Medical Center, Nijmegen, the Netherlands.
When followed for up to 7 years and after adjustment for differences in sex and age, the highest risk for the primary composite endpoint of cardiovascular (CV) death and heart failure hospitalization was observed in those with both high soluble neprilysin (sNEP) and high soluble corin (sCOR). The lowest risk was observed in the group with low levels of both enzymes.
The data suggest that monitoring these enzymes might provide “a step toward individualized CHF patient management,” Dr. Gommans reported in JACC Heart Failure, the adjusted hazard ratio for elevated sNEP and sCOR translated into a greater than 50% increase in the composite primary endpoint relative to low levels of both (HR, 1.56; P = .003). After a “comprehensive multivariable analysis,” the increased risk remained substantial and significant (HR, 1.41; P = .03).
In the natriuretic peptide pathway, which has long been recognized as a mediator of vasodilation, venous compliance, diuresis, and other processes dysregulated in heart failure, NEP and COR are “key mediators,” according to the investigators, who cited previously published studies. More attention has turned to these enzymes as potential biomarkers in the context of the PARADIGM trial, which associated an angiotensin-receptor neprilysin inhibitor (ARNI) with a survival benefit in CHF.
The observational study consisted of CHF patients attending a heart failure clinic and who were ARNI naive at inclusion. On the basis of circulating enzyme measurements undertaken from blood samples employing standard techniques, they were stratified into four groups. Those with low levels of both enzymes served as the reference. They were compared with those with low sNEP and high sCOR, those with high sNEP and low sCOR, and those with high levels of both enzymes.
Over the course of a median 4.5 years of follow-up, there were 511 deaths, of which 54% were from a CV cause. There were also 331 heart failure hospitalizations. In all, 449 patients reached the primary composite endpoint.
When compared with the group with low sNEP and low sCOR, an elevation in either enzyme was associated with a numerically but not significantly greater hazard ratio for the primary composite endpoint. The lack of correlation in the elevation of these two enzymes suggests each provides different prognostic information, although it appears that both must be considered together to predict outcomes.
Clinically, stratification of these enzymes might be most useful in HFpEF patients. Relative to the separation of event curves in the CHF patients with reduced ejection fraction (HFrEF), the divergence in the event curves for HFpEF were greater. In addition, event curves separated from the reference in HFpEF patients but not the HFrEF patients if either enzyme was elevated.
Asked if these data hold particular promise for monitoring and individualizing therapy in HFpEF patients, Dr. Gommans said yes. Although he cautioned that this was an observational study and that the differences between the HFpEF and HFrEF should be considered exploratory, he agreed that components of the natriuretic peptide pathway have particular potential to provide new prognostic information and individualize care in HFpEF, where therapeutic options remain limited.
Stratification of natriuretic peptide enzymes in this group might “present as an interesting alternative to ejection fraction” for prognosis and the consideration of treatment choices, he suggested.
Although further validation of the prognostic importance of sNEP and sCOR is needed, according to Dr. Gommans, he foresees the potential of therapeutic trials based on elevated levels of these enzymes. For example, he speculated that these levels might distinguish HFpEF patients who could benefit from a first-line ARNI.
In an accompanying editorial, significant doubts were expressed about simple measurements of sNEP and sCOR concentrations to predict clinical course or guide treatment decisions. The authors of the editorial agreed this is an important area of study but warned of its complexity.
“Concentrations of circulating neprilysin have been shown to correlate poorly with neprilysin activity. Thus the rate of natriuretic peptide degradation by neprilysin cannot be determined solely by measuring circulating levels,” cautioned Peder L. Myhre, MD, PhD, who is a cardiology fellow at Akershus University Hospital in Nordbyhagen, Norway, and postdoc researcher at the University of Oslo.
“Accordingly, concentrations of neprilysin and corin cannot alone be used to predict response to therapies interacting with these peptides,” he added. He agreed that neprilysin and corin might be appropriate biomarkers in CHF, but he thinks the focus must be on their enzymatic activity, not their circulating levels.
“Measuring the enzymatic activity may be a feasible strategy, but this remains to be seen,” he said.
Dr. Gommans reported a financial relationship with Novartis. Dr. Myhre reported financial relationships with Amgen, Novartis, and Novo Nordisk.
Although not correlated with each other, increased levels of circulating according to prospective analysis involving 1,009 HF patients.
This implies that these enzymes might have value for individualizing care, including treatment of patients in heart failure with preserved ejection fraction (HFpEF), reported a team of investigators led by D.H. Frank Gommans, MD, PhD, department of cardiology, Radboud University Medical Center, Nijmegen, the Netherlands.
When followed for up to 7 years and after adjustment for differences in sex and age, the highest risk for the primary composite endpoint of cardiovascular (CV) death and heart failure hospitalization was observed in those with both high soluble neprilysin (sNEP) and high soluble corin (sCOR). The lowest risk was observed in the group with low levels of both enzymes.
The data suggest that monitoring these enzymes might provide “a step toward individualized CHF patient management,” Dr. Gommans reported in JACC Heart Failure, the adjusted hazard ratio for elevated sNEP and sCOR translated into a greater than 50% increase in the composite primary endpoint relative to low levels of both (HR, 1.56; P = .003). After a “comprehensive multivariable analysis,” the increased risk remained substantial and significant (HR, 1.41; P = .03).
In the natriuretic peptide pathway, which has long been recognized as a mediator of vasodilation, venous compliance, diuresis, and other processes dysregulated in heart failure, NEP and COR are “key mediators,” according to the investigators, who cited previously published studies. More attention has turned to these enzymes as potential biomarkers in the context of the PARADIGM trial, which associated an angiotensin-receptor neprilysin inhibitor (ARNI) with a survival benefit in CHF.
The observational study consisted of CHF patients attending a heart failure clinic and who were ARNI naive at inclusion. On the basis of circulating enzyme measurements undertaken from blood samples employing standard techniques, they were stratified into four groups. Those with low levels of both enzymes served as the reference. They were compared with those with low sNEP and high sCOR, those with high sNEP and low sCOR, and those with high levels of both enzymes.
Over the course of a median 4.5 years of follow-up, there were 511 deaths, of which 54% were from a CV cause. There were also 331 heart failure hospitalizations. In all, 449 patients reached the primary composite endpoint.
When compared with the group with low sNEP and low sCOR, an elevation in either enzyme was associated with a numerically but not significantly greater hazard ratio for the primary composite endpoint. The lack of correlation in the elevation of these two enzymes suggests each provides different prognostic information, although it appears that both must be considered together to predict outcomes.
Clinically, stratification of these enzymes might be most useful in HFpEF patients. Relative to the separation of event curves in the CHF patients with reduced ejection fraction (HFrEF), the divergence in the event curves for HFpEF were greater. In addition, event curves separated from the reference in HFpEF patients but not the HFrEF patients if either enzyme was elevated.
Asked if these data hold particular promise for monitoring and individualizing therapy in HFpEF patients, Dr. Gommans said yes. Although he cautioned that this was an observational study and that the differences between the HFpEF and HFrEF should be considered exploratory, he agreed that components of the natriuretic peptide pathway have particular potential to provide new prognostic information and individualize care in HFpEF, where therapeutic options remain limited.
Stratification of natriuretic peptide enzymes in this group might “present as an interesting alternative to ejection fraction” for prognosis and the consideration of treatment choices, he suggested.
Although further validation of the prognostic importance of sNEP and sCOR is needed, according to Dr. Gommans, he foresees the potential of therapeutic trials based on elevated levels of these enzymes. For example, he speculated that these levels might distinguish HFpEF patients who could benefit from a first-line ARNI.
In an accompanying editorial, significant doubts were expressed about simple measurements of sNEP and sCOR concentrations to predict clinical course or guide treatment decisions. The authors of the editorial agreed this is an important area of study but warned of its complexity.
“Concentrations of circulating neprilysin have been shown to correlate poorly with neprilysin activity. Thus the rate of natriuretic peptide degradation by neprilysin cannot be determined solely by measuring circulating levels,” cautioned Peder L. Myhre, MD, PhD, who is a cardiology fellow at Akershus University Hospital in Nordbyhagen, Norway, and postdoc researcher at the University of Oslo.
“Accordingly, concentrations of neprilysin and corin cannot alone be used to predict response to therapies interacting with these peptides,” he added. He agreed that neprilysin and corin might be appropriate biomarkers in CHF, but he thinks the focus must be on their enzymatic activity, not their circulating levels.
“Measuring the enzymatic activity may be a feasible strategy, but this remains to be seen,” he said.
Dr. Gommans reported a financial relationship with Novartis. Dr. Myhre reported financial relationships with Amgen, Novartis, and Novo Nordisk.
Although not correlated with each other, increased levels of circulating according to prospective analysis involving 1,009 HF patients.
This implies that these enzymes might have value for individualizing care, including treatment of patients in heart failure with preserved ejection fraction (HFpEF), reported a team of investigators led by D.H. Frank Gommans, MD, PhD, department of cardiology, Radboud University Medical Center, Nijmegen, the Netherlands.
When followed for up to 7 years and after adjustment for differences in sex and age, the highest risk for the primary composite endpoint of cardiovascular (CV) death and heart failure hospitalization was observed in those with both high soluble neprilysin (sNEP) and high soluble corin (sCOR). The lowest risk was observed in the group with low levels of both enzymes.
The data suggest that monitoring these enzymes might provide “a step toward individualized CHF patient management,” Dr. Gommans reported in JACC Heart Failure, the adjusted hazard ratio for elevated sNEP and sCOR translated into a greater than 50% increase in the composite primary endpoint relative to low levels of both (HR, 1.56; P = .003). After a “comprehensive multivariable analysis,” the increased risk remained substantial and significant (HR, 1.41; P = .03).
In the natriuretic peptide pathway, which has long been recognized as a mediator of vasodilation, venous compliance, diuresis, and other processes dysregulated in heart failure, NEP and COR are “key mediators,” according to the investigators, who cited previously published studies. More attention has turned to these enzymes as potential biomarkers in the context of the PARADIGM trial, which associated an angiotensin-receptor neprilysin inhibitor (ARNI) with a survival benefit in CHF.
The observational study consisted of CHF patients attending a heart failure clinic and who were ARNI naive at inclusion. On the basis of circulating enzyme measurements undertaken from blood samples employing standard techniques, they were stratified into four groups. Those with low levels of both enzymes served as the reference. They were compared with those with low sNEP and high sCOR, those with high sNEP and low sCOR, and those with high levels of both enzymes.
Over the course of a median 4.5 years of follow-up, there were 511 deaths, of which 54% were from a CV cause. There were also 331 heart failure hospitalizations. In all, 449 patients reached the primary composite endpoint.
When compared with the group with low sNEP and low sCOR, an elevation in either enzyme was associated with a numerically but not significantly greater hazard ratio for the primary composite endpoint. The lack of correlation in the elevation of these two enzymes suggests each provides different prognostic information, although it appears that both must be considered together to predict outcomes.
Clinically, stratification of these enzymes might be most useful in HFpEF patients. Relative to the separation of event curves in the CHF patients with reduced ejection fraction (HFrEF), the divergence in the event curves for HFpEF were greater. In addition, event curves separated from the reference in HFpEF patients but not the HFrEF patients if either enzyme was elevated.
Asked if these data hold particular promise for monitoring and individualizing therapy in HFpEF patients, Dr. Gommans said yes. Although he cautioned that this was an observational study and that the differences between the HFpEF and HFrEF should be considered exploratory, he agreed that components of the natriuretic peptide pathway have particular potential to provide new prognostic information and individualize care in HFpEF, where therapeutic options remain limited.
Stratification of natriuretic peptide enzymes in this group might “present as an interesting alternative to ejection fraction” for prognosis and the consideration of treatment choices, he suggested.
Although further validation of the prognostic importance of sNEP and sCOR is needed, according to Dr. Gommans, he foresees the potential of therapeutic trials based on elevated levels of these enzymes. For example, he speculated that these levels might distinguish HFpEF patients who could benefit from a first-line ARNI.
In an accompanying editorial, significant doubts were expressed about simple measurements of sNEP and sCOR concentrations to predict clinical course or guide treatment decisions. The authors of the editorial agreed this is an important area of study but warned of its complexity.
“Concentrations of circulating neprilysin have been shown to correlate poorly with neprilysin activity. Thus the rate of natriuretic peptide degradation by neprilysin cannot be determined solely by measuring circulating levels,” cautioned Peder L. Myhre, MD, PhD, who is a cardiology fellow at Akershus University Hospital in Nordbyhagen, Norway, and postdoc researcher at the University of Oslo.
“Accordingly, concentrations of neprilysin and corin cannot alone be used to predict response to therapies interacting with these peptides,” he added. He agreed that neprilysin and corin might be appropriate biomarkers in CHF, but he thinks the focus must be on their enzymatic activity, not their circulating levels.
“Measuring the enzymatic activity may be a feasible strategy, but this remains to be seen,” he said.
Dr. Gommans reported a financial relationship with Novartis. Dr. Myhre reported financial relationships with Amgen, Novartis, and Novo Nordisk.
FROM JACC HEART FAILURE