Conference Coverage

A new tool for predicting which patients with psoriasis will develop psoriatic arthritis (PsA) is showing promise for such clinical applications as early treatment in those at risk or trials to prevent PsA, according to a summary of progress at the annual meeting of the Canadian Rheumatology Association.

Based on current levels of sensitivity and specificity, psoriasis “can be predicted with reasonable accuracy,” reported Lihi Eder, MD, PhD, director of research in the rheumatology division at the University of Toronto.

The predictive method, called PRESTO (Prediction of Psoriatic Arthritis Tool), is based on variables readily available in clinical practice, according to Dr. Eder. Once values are assigned to the risk factors, the risk of PsA over a 1-year or 5-year time frame can be estimated with a calculator.

She called PRESTO the “first clinical tool for predicting PsA among psoriasis patients.”

The work on this tool began in 2006 when the International Psoriasis and Arthritis Research Team (IPART) initiated a prospectively collected cohort of psoriasis patients. To be enrolled, patients had to be free of signs and symptoms of arthritis upon examination by a rheumatologist. They were then invited to return annually for follow-up that again included screening for joint involvement by a rheumatologist.

At baseline and at follow-up evaluations, 13 predictors were evaluated. These involved psoriasis characteristics, such as nail pitting; symptoms, such as stiffness; comorbidities, such as additional inflammatory diseases; and laboratory values, such as upregulated markers of inflammation.

Symptoms and signs used to predict PsA

Dr. Eder and her colleagues applied regression models to select an optimal combination of variables weighted for predictive value. Variables offering predictive value included higher PASI (Psoriasis Area and Severity Index), greater fatigue score as measured by FACIT (Functional Assessment of Chronic Illness Therapy) score, greater morning stiffness, and greater pain.

When applied to 635 patients in the IPART cohort, in which there were 51 incident PsA cases over 1 year and 75 incident cases over 5 years, the area under the curve (AUC) for PRESTO at the cutoffs studied was 72% for the 1-year time window and 75% for the 5-year time window.

These levels are associated with adequate accuracy, according to Dr. Eder, who explained that “an AUC greater than 70% is considered reasonable” for clinical applicability.

Moreover, the cutoffs can be adjusted for the specific purpose of the predictive tool. For example, to screen patients for risk, lower cutoffs could be employed to increase sensitivity. In order to select patients for a clinical trial to prevent PsA, higher cutoffs could be employed to increase specificity.

But sensitivities and specificities move in opposite directions when cutoffs are adjusted. Showing data from the 5-year prediction model, Dr. Eder reported that specificities climbed from about 58% to 97% as cutoffs were increased. The sensitivities with these adjustments fell from 79% to 14%.

In general, Dr. Eder said there was “excellent calibration” for the cutoffs employed when they compared the predicted and observed rates of PsA according to quintile of predictive probability. The differences were particularly minor over a 1-year time period. Over the 5-year period, observed rates were somewhat higher than predicted in the fourth and fifth quintile, but, again, this discrepancy could be modified for specific applications with cutoff adjustments.

Validation studies are planned

Even though psoriasis patients in IPART represents one of the largest cohorts of prospectively collected psoriasis patients, Dr. Eder acknowledged that the sample size would be considered “moderate” for developing a predictive model. However, the fact that the data were collected prospectively using standardized methodology strengthens the findings and provides the basis for the next step.

“Validation studies are planned with external cohorts,” said Dr. Eder, who indicated that a viable tool for identifying psoriasis patients at risk for PsA is likely. Even if it is not employed routinely in its current form at the level of individual patient care, she predicted that it will have value at a research level for understanding the relationship of psoriasis to PsA.

Christopher T. Ritchlin, MD, a professor and researcher at the University of Rochester (N.Y.), agreed that PRESTO has important potential as a clinical tool. Dr. Ritchlin has been involved in the development of PRESTO but was not involved in the presentation made at the CRA annual meeting.

“The PRESTO tool has the ability to predict the 2- and 5-year risk of developing psoriatic arthritis, which is an important advance if confirmed,” he said in an interview. He pointed out that approximately 25%-30% who develop psoriasis will go on to develop PsA but until now there has been no way to identify them.

“This tool may provide a pathway to early intervention,” he said.

Dr. Eder has financial relationships with AbbVie, Eli Lilly, Fresenius Kabi, Janssen, Novartis, Pfizer, Sandoz, and UCB. Dr. Ritchlin has financial relationships with many of the same companies.

A new tool for predicting which patients with psoriasis will develop psoriatic arthritis (PsA) is showing promise for such clinical applications as early treatment in those at risk or trials to prevent PsA, according to a summary of progress at the annual meeting of the Canadian Rheumatology Association.

Based on current levels of sensitivity and specificity, psoriasis “can be predicted with reasonable accuracy,” reported Lihi Eder, MD, PhD, director of research in the rheumatology division at the University of Toronto.

The predictive method, called PRESTO (Prediction of Psoriatic Arthritis Tool), is based on variables readily available in clinical practice, according to Dr. Eder. Once values are assigned to the risk factors, the risk of PsA over a 1-year or 5-year time frame can be estimated with a calculator.

She called PRESTO the “first clinical tool for predicting PsA among psoriasis patients.”

The work on this tool began in 2006 when the International Psoriasis and Arthritis Research Team (IPART) initiated a prospectively collected cohort of psoriasis patients. To be enrolled, patients had to be free of signs and symptoms of arthritis upon examination by a rheumatologist. They were then invited to return annually for follow-up that again included screening for joint involvement by a rheumatologist.

At baseline and at follow-up evaluations, 13 predictors were evaluated. These involved psoriasis characteristics, such as nail pitting; symptoms, such as stiffness; comorbidities, such as additional inflammatory diseases; and laboratory values, such as upregulated markers of inflammation.

Symptoms and signs used to predict PsA

Dr. Eder and her colleagues applied regression models to select an optimal combination of variables weighted for predictive value. Variables offering predictive value included higher PASI (Psoriasis Area and Severity Index), greater fatigue score as measured by FACIT (Functional Assessment of Chronic Illness Therapy) score, greater morning stiffness, and greater pain.

When applied to 635 patients in the IPART cohort, in which there were 51 incident PsA cases over 1 year and 75 incident cases over 5 years, the area under the curve (AUC) for PRESTO at the cutoffs studied was 72% for the 1-year time window and 75% for the 5-year time window.

These levels are associated with adequate accuracy, according to Dr. Eder, who explained that “an AUC greater than 70% is considered reasonable” for clinical applicability.

Moreover, the cutoffs can be adjusted for the specific purpose of the predictive tool. For example, to screen patients for risk, lower cutoffs could be employed to increase sensitivity. In order to select patients for a clinical trial to prevent PsA, higher cutoffs could be employed to increase specificity.

But sensitivities and specificities move in opposite directions when cutoffs are adjusted. Showing data from the 5-year prediction model, Dr. Eder reported that specificities climbed from about 58% to 97% as cutoffs were increased. The sensitivities with these adjustments fell from 79% to 14%.

In general, Dr. Eder said there was “excellent calibration” for the cutoffs employed when they compared the predicted and observed rates of PsA according to quintile of predictive probability. The differences were particularly minor over a 1-year time period. Over the 5-year period, observed rates were somewhat higher than predicted in the fourth and fifth quintile, but, again, this discrepancy could be modified for specific applications with cutoff adjustments.

Validation studies are planned

Even though psoriasis patients in IPART represents one of the largest cohorts of prospectively collected psoriasis patients, Dr. Eder acknowledged that the sample size would be considered “moderate” for developing a predictive model. However, the fact that the data were collected prospectively using standardized methodology strengthens the findings and provides the basis for the next step.

“Validation studies are planned with external cohorts,” said Dr. Eder, who indicated that a viable tool for identifying psoriasis patients at risk for PsA is likely. Even if it is not employed routinely in its current form at the level of individual patient care, she predicted that it will have value at a research level for understanding the relationship of psoriasis to PsA.

Christopher T. Ritchlin, MD, a professor and researcher at the University of Rochester (N.Y.), agreed that PRESTO has important potential as a clinical tool. Dr. Ritchlin has been involved in the development of PRESTO but was not involved in the presentation made at the CRA annual meeting.

“The PRESTO tool has the ability to predict the 2- and 5-year risk of developing psoriatic arthritis, which is an important advance if confirmed,” he said in an interview. He pointed out that approximately 25%-30% who develop psoriasis will go on to develop PsA but until now there has been no way to identify them.

“This tool may provide a pathway to early intervention,” he said.

Dr. Eder has financial relationships with AbbVie, Eli Lilly, Fresenius Kabi, Janssen, Novartis, Pfizer, Sandoz, and UCB. Dr. Ritchlin has financial relationships with many of the same companies.

A new tool for predicting which patients with psoriasis will develop psoriatic arthritis (PsA) is showing promise for such clinical applications as early treatment in those at risk or trials to prevent PsA, according to a summary of progress at the annual meeting of the Canadian Rheumatology Association.

Based on current levels of sensitivity and specificity, psoriasis “can be predicted with reasonable accuracy,” reported Lihi Eder, MD, PhD, director of research in the rheumatology division at the University of Toronto.

The predictive method, called PRESTO (Prediction of Psoriatic Arthritis Tool), is based on variables readily available in clinical practice, according to Dr. Eder. Once values are assigned to the risk factors, the risk of PsA over a 1-year or 5-year time frame can be estimated with a calculator.

She called PRESTO the “first clinical tool for predicting PsA among psoriasis patients.”

The work on this tool began in 2006 when the International Psoriasis and Arthritis Research Team (IPART) initiated a prospectively collected cohort of psoriasis patients. To be enrolled, patients had to be free of signs and symptoms of arthritis upon examination by a rheumatologist. They were then invited to return annually for follow-up that again included screening for joint involvement by a rheumatologist.

At baseline and at follow-up evaluations, 13 predictors were evaluated. These involved psoriasis characteristics, such as nail pitting; symptoms, such as stiffness; comorbidities, such as additional inflammatory diseases; and laboratory values, such as upregulated markers of inflammation.

Symptoms and signs used to predict PsA

Dr. Eder and her colleagues applied regression models to select an optimal combination of variables weighted for predictive value. Variables offering predictive value included higher PASI (Psoriasis Area and Severity Index), greater fatigue score as measured by FACIT (Functional Assessment of Chronic Illness Therapy) score, greater morning stiffness, and greater pain.

When applied to 635 patients in the IPART cohort, in which there were 51 incident PsA cases over 1 year and 75 incident cases over 5 years, the area under the curve (AUC) for PRESTO at the cutoffs studied was 72% for the 1-year time window and 75% for the 5-year time window.

These levels are associated with adequate accuracy, according to Dr. Eder, who explained that “an AUC greater than 70% is considered reasonable” for clinical applicability.

Moreover, the cutoffs can be adjusted for the specific purpose of the predictive tool. For example, to screen patients for risk, lower cutoffs could be employed to increase sensitivity. In order to select patients for a clinical trial to prevent PsA, higher cutoffs could be employed to increase specificity.

But sensitivities and specificities move in opposite directions when cutoffs are adjusted. Showing data from the 5-year prediction model, Dr. Eder reported that specificities climbed from about 58% to 97% as cutoffs were increased. The sensitivities with these adjustments fell from 79% to 14%.

In general, Dr. Eder said there was “excellent calibration” for the cutoffs employed when they compared the predicted and observed rates of PsA according to quintile of predictive probability. The differences were particularly minor over a 1-year time period. Over the 5-year period, observed rates were somewhat higher than predicted in the fourth and fifth quintile, but, again, this discrepancy could be modified for specific applications with cutoff adjustments.

Validation studies are planned

Even though psoriasis patients in IPART represents one of the largest cohorts of prospectively collected psoriasis patients, Dr. Eder acknowledged that the sample size would be considered “moderate” for developing a predictive model. However, the fact that the data were collected prospectively using standardized methodology strengthens the findings and provides the basis for the next step.

“Validation studies are planned with external cohorts,” said Dr. Eder, who indicated that a viable tool for identifying psoriasis patients at risk for PsA is likely. Even if it is not employed routinely in its current form at the level of individual patient care, she predicted that it will have value at a research level for understanding the relationship of psoriasis to PsA.

Christopher T. Ritchlin, MD, a professor and researcher at the University of Rochester (N.Y.), agreed that PRESTO has important potential as a clinical tool. Dr. Ritchlin has been involved in the development of PRESTO but was not involved in the presentation made at the CRA annual meeting.

“The PRESTO tool has the ability to predict the 2- and 5-year risk of developing psoriatic arthritis, which is an important advance if confirmed,” he said in an interview. He pointed out that approximately 25%-30% who develop psoriasis will go on to develop PsA but until now there has been no way to identify them.

“This tool may provide a pathway to early intervention,” he said.

Dr. Eder has financial relationships with AbbVie, Eli Lilly, Fresenius Kabi, Janssen, Novartis, Pfizer, Sandoz, and UCB. Dr. Ritchlin has financial relationships with many of the same companies.

At the time of a nephritis flare in patients with systemic lupus erythematosus (SLE), elevated levels of two neutrophil extracellular trap (NET) protein complexes, elastase-DNA and HMGB1-DNA, predict declining renal function, poor response to therapy, and adverse renal outcomes, according to work presented at the annual meeting of the Canadian Rheumatology Association.

“These proteins are not only predominantly elevated in patients with proliferative lupus nephritis, but they correlate with adverse renal outcomes when patients are followed over 24 months,” reported Laura P. Whittall-Garcia, MD, a clinical fellow in rheumatology at the University of Toronto.

Lupus nephritis is common in SLE, developing in about 50% of patients, according to Dr. Whittall-Garcia. Of these, up to 20% will not respond to standard therapies, typically resulting in end-stage renal disease. Up until now, there has been no reliable method of predicting this adverse clinical course.
 

Proteins identified in NETs

The series of studies conducted by Dr. Whittall-Garcia and coinvestigators were focused on NETs, a network of strings of DNA that typically bind pathogenic microbes to prevent infection but can participate in the pathology of immune-mediated conditions. As Dr. Whittall-Garcia explained, DNA extruded from NETs has been a source of autoantigens.

Based on earlier work, they pursued the hypothesis that high mobility group box 1 (HMGB1) and elastase, which are both NET components, mediate NETosis, the immune response that protects against microbes in healthy individuals but contributes to tissue damage in patients with immune-related disorders. The first aim of this work was to confirm that elevations of elastase-DNA and HMGB1-DNA correlate with active lupus nephritis. The second aim was to determine if levels of these proteins at the time of lupus nephritis flare predicted renal outcomes at 12 and 24 months.

To pursue the first hypothesis, 49 patients with active SLE (18 of whom had active lupus nephritis) were evaluated along with 23 patients with inactive SLE and 20 healthy controls.

Highest levels seen in proliferative nephritis

Relative to healthy controls, patients with active SLE have highly significantly increased levels of both proteins (P < .0001). And relative to those with inactive SLE, the levels of active patients were higher but fell short of statistical significance. However, when the researchers compared those with active lupus nephritis with those who had active SLE but no nephritis, both proteins were significantly higher (P < .04), and the levels in patients with proliferative relative to nonproliferative lupus nephritis were higher still (P < .009).

To pursue the second aim of the study, the researchers retrospectively evaluated 109 patients with SLE. All had active lupus nephritis, a baseline estimated glomerular filtration rate (eGFR) greater than 30 mL/min prior to the flare, and at least 2 years of follow-up. They evaluated complete response at 12 and 24 months, percent decline in eGFR, and severe renal impairment (eGFR ≤ 30 mL/min) in the context of levels of elastase and HMGB1.

With elevations in either NET remnant, the odds ratio of failing to achieve a complete response at 24 months were approximately doubled for elastase-DNA (OR, 1.96; P = .01) and for HMGB1 (OR, 2.61; P = .02). For the endpoint of severe renal impairment 24 months after a lupus nephritis flare, there was also a positive association with both elastase-DNA (OR, 1.55; P = .005) and HMBG1-DNA (OR, 1.91; P = .01).

“For every 100-unit increase in elastase-DNA complexes, there is a 4.8% decrease in eGFR,” reported Dr. Whittall-Garcia, who noted this relationship was highly statistically significant (P < .0001). For HMGB1-DNA, each 100-unit increase was associated with a 5.3% decrease in eGFR (P = .0006).
 

No other biomarkers compare for prognosis

“After adjusting for multiple variables, these protein levels at the time of the flare outperformed all conventional biomarkers, including proteinuria and complement levels,” Dr. Whittall-Garcia said.

Larger validating studies are needed, but Dr. Whittall-Garcia is optimistic that measuring these NET remnant levels will prove useful for monitoring patients at the time of the lupus nephritis flare and over time for the purposes of predicting adverse outcomes and response to therapy.

Although more work is needed, Adegbenga A. Bankole, MD, associate professor of medicine at Virginia Tech University and chief of the rheumatology division at the Carilion Clinic, both in Roanoke, agreed that this is a promising research direction. He reported that NETs have been attracting interest at several research centers for their potential in helping to understand the pathogenesis of lupus nephritis.

“It is unlikely that any one test will ever be a panacea in the diagnosis or predictor of outcomes in lupus nephritis,” Dr. Bankole said in an interview, but “given the importance of NETosis in the development of this disease, studies like this will form the basis of the multistep process through which we will improve patient care.”

With further progress in this area, Dr. Bankole predicted that these studies will lead to clinical applications.

“Dr. Whittall-Garcia and her team will help in the development of diagnostic and/or predictive algorithms that may go on to help improve survival of future patients with SLE,” he said.Dr. Whittall-Garcia and Dr. Bankole report they have no relevant financial relationships.

At the time of a nephritis flare in patients with systemic lupus erythematosus (SLE), elevated levels of two neutrophil extracellular trap (NET) protein complexes, elastase-DNA and HMGB1-DNA, predict declining renal function, poor response to therapy, and adverse renal outcomes, according to work presented at the annual meeting of the Canadian Rheumatology Association.

“These proteins are not only predominantly elevated in patients with proliferative lupus nephritis, but they correlate with adverse renal outcomes when patients are followed over 24 months,” reported Laura P. Whittall-Garcia, MD, a clinical fellow in rheumatology at the University of Toronto.

Lupus nephritis is common in SLE, developing in about 50% of patients, according to Dr. Whittall-Garcia. Of these, up to 20% will not respond to standard therapies, typically resulting in end-stage renal disease. Up until now, there has been no reliable method of predicting this adverse clinical course.
 

Proteins identified in NETs

The series of studies conducted by Dr. Whittall-Garcia and coinvestigators were focused on NETs, a network of strings of DNA that typically bind pathogenic microbes to prevent infection but can participate in the pathology of immune-mediated conditions. As Dr. Whittall-Garcia explained, DNA extruded from NETs has been a source of autoantigens.

Based on earlier work, they pursued the hypothesis that high mobility group box 1 (HMGB1) and elastase, which are both NET components, mediate NETosis, the immune response that protects against microbes in healthy individuals but contributes to tissue damage in patients with immune-related disorders. The first aim of this work was to confirm that elevations of elastase-DNA and HMGB1-DNA correlate with active lupus nephritis. The second aim was to determine if levels of these proteins at the time of lupus nephritis flare predicted renal outcomes at 12 and 24 months.

To pursue the first hypothesis, 49 patients with active SLE (18 of whom had active lupus nephritis) were evaluated along with 23 patients with inactive SLE and 20 healthy controls.

Highest levels seen in proliferative nephritis

Relative to healthy controls, patients with active SLE have highly significantly increased levels of both proteins (P < .0001). And relative to those with inactive SLE, the levels of active patients were higher but fell short of statistical significance. However, when the researchers compared those with active lupus nephritis with those who had active SLE but no nephritis, both proteins were significantly higher (P < .04), and the levels in patients with proliferative relative to nonproliferative lupus nephritis were higher still (P < .009).

To pursue the second aim of the study, the researchers retrospectively evaluated 109 patients with SLE. All had active lupus nephritis, a baseline estimated glomerular filtration rate (eGFR) greater than 30 mL/min prior to the flare, and at least 2 years of follow-up. They evaluated complete response at 12 and 24 months, percent decline in eGFR, and severe renal impairment (eGFR ≤ 30 mL/min) in the context of levels of elastase and HMGB1.

With elevations in either NET remnant, the odds ratio of failing to achieve a complete response at 24 months were approximately doubled for elastase-DNA (OR, 1.96; P = .01) and for HMGB1 (OR, 2.61; P = .02). For the endpoint of severe renal impairment 24 months after a lupus nephritis flare, there was also a positive association with both elastase-DNA (OR, 1.55; P = .005) and HMBG1-DNA (OR, 1.91; P = .01).

“For every 100-unit increase in elastase-DNA complexes, there is a 4.8% decrease in eGFR,” reported Dr. Whittall-Garcia, who noted this relationship was highly statistically significant (P < .0001). For HMGB1-DNA, each 100-unit increase was associated with a 5.3% decrease in eGFR (P = .0006).
 

No other biomarkers compare for prognosis

“After adjusting for multiple variables, these protein levels at the time of the flare outperformed all conventional biomarkers, including proteinuria and complement levels,” Dr. Whittall-Garcia said.

Larger validating studies are needed, but Dr. Whittall-Garcia is optimistic that measuring these NET remnant levels will prove useful for monitoring patients at the time of the lupus nephritis flare and over time for the purposes of predicting adverse outcomes and response to therapy.

Although more work is needed, Adegbenga A. Bankole, MD, associate professor of medicine at Virginia Tech University and chief of the rheumatology division at the Carilion Clinic, both in Roanoke, agreed that this is a promising research direction. He reported that NETs have been attracting interest at several research centers for their potential in helping to understand the pathogenesis of lupus nephritis.

“It is unlikely that any one test will ever be a panacea in the diagnosis or predictor of outcomes in lupus nephritis,” Dr. Bankole said in an interview, but “given the importance of NETosis in the development of this disease, studies like this will form the basis of the multistep process through which we will improve patient care.”

With further progress in this area, Dr. Bankole predicted that these studies will lead to clinical applications.

“Dr. Whittall-Garcia and her team will help in the development of diagnostic and/or predictive algorithms that may go on to help improve survival of future patients with SLE,” he said.Dr. Whittall-Garcia and Dr. Bankole report they have no relevant financial relationships.

At the time of a nephritis flare in patients with systemic lupus erythematosus (SLE), elevated levels of two neutrophil extracellular trap (NET) protein complexes, elastase-DNA and HMGB1-DNA, predict declining renal function, poor response to therapy, and adverse renal outcomes, according to work presented at the annual meeting of the Canadian Rheumatology Association.

“These proteins are not only predominantly elevated in patients with proliferative lupus nephritis, but they correlate with adverse renal outcomes when patients are followed over 24 months,” reported Laura P. Whittall-Garcia, MD, a clinical fellow in rheumatology at the University of Toronto.

Lupus nephritis is common in SLE, developing in about 50% of patients, according to Dr. Whittall-Garcia. Of these, up to 20% will not respond to standard therapies, typically resulting in end-stage renal disease. Up until now, there has been no reliable method of predicting this adverse clinical course.
 

Proteins identified in NETs

The series of studies conducted by Dr. Whittall-Garcia and coinvestigators were focused on NETs, a network of strings of DNA that typically bind pathogenic microbes to prevent infection but can participate in the pathology of immune-mediated conditions. As Dr. Whittall-Garcia explained, DNA extruded from NETs has been a source of autoantigens.

Based on earlier work, they pursued the hypothesis that high mobility group box 1 (HMGB1) and elastase, which are both NET components, mediate NETosis, the immune response that protects against microbes in healthy individuals but contributes to tissue damage in patients with immune-related disorders. The first aim of this work was to confirm that elevations of elastase-DNA and HMGB1-DNA correlate with active lupus nephritis. The second aim was to determine if levels of these proteins at the time of lupus nephritis flare predicted renal outcomes at 12 and 24 months.

To pursue the first hypothesis, 49 patients with active SLE (18 of whom had active lupus nephritis) were evaluated along with 23 patients with inactive SLE and 20 healthy controls.

Highest levels seen in proliferative nephritis

Relative to healthy controls, patients with active SLE have highly significantly increased levels of both proteins (P < .0001). And relative to those with inactive SLE, the levels of active patients were higher but fell short of statistical significance. However, when the researchers compared those with active lupus nephritis with those who had active SLE but no nephritis, both proteins were significantly higher (P < .04), and the levels in patients with proliferative relative to nonproliferative lupus nephritis were higher still (P < .009).

To pursue the second aim of the study, the researchers retrospectively evaluated 109 patients with SLE. All had active lupus nephritis, a baseline estimated glomerular filtration rate (eGFR) greater than 30 mL/min prior to the flare, and at least 2 years of follow-up. They evaluated complete response at 12 and 24 months, percent decline in eGFR, and severe renal impairment (eGFR ≤ 30 mL/min) in the context of levels of elastase and HMGB1.

With elevations in either NET remnant, the odds ratio of failing to achieve a complete response at 24 months were approximately doubled for elastase-DNA (OR, 1.96; P = .01) and for HMGB1 (OR, 2.61; P = .02). For the endpoint of severe renal impairment 24 months after a lupus nephritis flare, there was also a positive association with both elastase-DNA (OR, 1.55; P = .005) and HMBG1-DNA (OR, 1.91; P = .01).

“For every 100-unit increase in elastase-DNA complexes, there is a 4.8% decrease in eGFR,” reported Dr. Whittall-Garcia, who noted this relationship was highly statistically significant (P < .0001). For HMGB1-DNA, each 100-unit increase was associated with a 5.3% decrease in eGFR (P = .0006).
 

No other biomarkers compare for prognosis

“After adjusting for multiple variables, these protein levels at the time of the flare outperformed all conventional biomarkers, including proteinuria and complement levels,” Dr. Whittall-Garcia said.

Larger validating studies are needed, but Dr. Whittall-Garcia is optimistic that measuring these NET remnant levels will prove useful for monitoring patients at the time of the lupus nephritis flare and over time for the purposes of predicting adverse outcomes and response to therapy.

Although more work is needed, Adegbenga A. Bankole, MD, associate professor of medicine at Virginia Tech University and chief of the rheumatology division at the Carilion Clinic, both in Roanoke, agreed that this is a promising research direction. He reported that NETs have been attracting interest at several research centers for their potential in helping to understand the pathogenesis of lupus nephritis.

“It is unlikely that any one test will ever be a panacea in the diagnosis or predictor of outcomes in lupus nephritis,” Dr. Bankole said in an interview, but “given the importance of NETosis in the development of this disease, studies like this will form the basis of the multistep process through which we will improve patient care.”

With further progress in this area, Dr. Bankole predicted that these studies will lead to clinical applications.

“Dr. Whittall-Garcia and her team will help in the development of diagnostic and/or predictive algorithms that may go on to help improve survival of future patients with SLE,” he said.Dr. Whittall-Garcia and Dr. Bankole report they have no relevant financial relationships.

SAN DIEGO – According to the latest American Cancer Society (ACS) data, cutaneous melanoma was the 5th most common cancer in 2022, with an estimated 99,780 new cases and 7,650 deaths, following cancer of the colorectal area, lung and bronchus, prostate, and breast.

“The incidence of melanoma seems to have continued to go up since the early 1990s,” David E. Kent, MD, a dermatologist who practices in Macon, Ga., said at the annual Cutaneous Malignancy Update. “The death rates have been flat and may have slightly decreased.”

In 2023, the ACS estimates that about 97,610 new melanomas will be diagnosed in the United States (58,120 men and 39,490 women), and about 7,990 people are expected to die of melanoma (5,420 men and 2,570 women). In addition, ACS data from 2017-2019 project that about 2.1% of men and women will be diagnosed with cutaneous melanoma in their lifetime. To date, more than 1.3 million people in the United States live with cutaneous melanoma, and the overall 5-year survival is 93.7%.

Epidemiologic studies show an increase in melanoma incidence, primarily among White populations. “This is believed to be due primarily to sun exposure and to changing recreational behaviors and tanning bed exposures,” said Dr. Kent, who holds a faculty position in the department of dermatology at the Medical College of Georgia, Augusta. Increased surveillance and diagnosis also play a role. In the medical literature, annual increases in melanoma incidence vary from 3% to 7% per year, “which translates into a doubling of rates every 10-20 years,” he said, noting that annual melanoma costs are approximately $3.3 billion.

While incidence rates are lower in non-White, non-Hispanic populations, poor outcomes are disproportionately higher in persons of color. Blacks present at diagnosis with more advanced stage disease and are 1.5 times more likely to die from melanoma, he said, while Hispanics are 2.4 times more likely to present with stage III disease and 3.6 times more likely to have distant metastases. Persons of color also have higher rates of mucosal, acral lentiginous, and subungual melanoma.

Known genetic risk factors for melanoma include having skin types I and II, particularly those with light hair, light eyes, and freckling, and those with a family history have a twofold increased risk. Also, up to 40% of genetic cases are from inherited mutations in CDKN2A, CDK4, BAP1, and MCR1. Other genetic-related risk factors include the number and size of nevi, having atypical nevus syndrome, DNA repair defects, large congenital nevi, and a personal history of melanoma.

The main environmental risk factor for melanoma is exposure to ultraviolet radiation. “You can break it down in terms of whether this exposure is lifetime, intermittent intense UV exposure, from the use of tanning beds, or due to sunburns during childhood,” Dr. Kent said at the meeting, which was hosted by Scripps MD Anderson Cancer Center. Other environmental risk factors include distance from the equator, having a high socioeconomic status, being immunosuppressed, and exposure to heavy metals, insecticides, or hormones.

In a recently published study, researchers investigated the risk factors associated with first and second primary melanomas in 38,845 patients who were followed in Australia between 2011 and 2018. During a median follow-up of 7.4 years, 1,212 patients (3.1%) had a single primary melanoma diagnosis and 245 (0.6%) had a secondary primary melanoma diagnosis. The researchers found that second melanomas were more likely than were first melanomas to be in situ; for invasive tumors, second melanomas were more likely to be thin (defined as 1 mm or less) than were first melanomas.

In addition, having many self-reported moles at age 21 years was more strongly associated with second melanomas compared with first melanomas (hazard ratio [HR], 6.36 vs. 3.46, respectively; P = .01), as was having a high genetic predisposition (HR, 3.28 vs. 2.06; P = .03).

Second melanomas were also more strongly associated with a history of multiple skin cancer excisions than were first melanomas (HR, 2.63 vs. 1.86; P = .05). “Interestingly, there were no differences in UV exposure between the first primary and second primary melanoma groups,” said Dr. Kent, who was not involved with the study.

He noted that while sunscreen use protects against melanoma, a National Ambulatory Medical Care Survey (NAMCS) found that internists and pediatricians mentioned sunscreen at fewer than 0.1% of visits – even those with patients who have a diagnosis of skin disease. “Physicians need to do better,” he said. “We as dermatologists have work to do to help educate them.”

Dr. Kent reported having no relevant disclosures.

SAN DIEGO – According to the latest American Cancer Society (ACS) data, cutaneous melanoma was the 5th most common cancer in 2022, with an estimated 99,780 new cases and 7,650 deaths, following cancer of the colorectal area, lung and bronchus, prostate, and breast.

“The incidence of melanoma seems to have continued to go up since the early 1990s,” David E. Kent, MD, a dermatologist who practices in Macon, Ga., said at the annual Cutaneous Malignancy Update. “The death rates have been flat and may have slightly decreased.”

In 2023, the ACS estimates that about 97,610 new melanomas will be diagnosed in the United States (58,120 men and 39,490 women), and about 7,990 people are expected to die of melanoma (5,420 men and 2,570 women). In addition, ACS data from 2017-2019 project that about 2.1% of men and women will be diagnosed with cutaneous melanoma in their lifetime. To date, more than 1.3 million people in the United States live with cutaneous melanoma, and the overall 5-year survival is 93.7%.

Epidemiologic studies show an increase in melanoma incidence, primarily among White populations. “This is believed to be due primarily to sun exposure and to changing recreational behaviors and tanning bed exposures,” said Dr. Kent, who holds a faculty position in the department of dermatology at the Medical College of Georgia, Augusta. Increased surveillance and diagnosis also play a role. In the medical literature, annual increases in melanoma incidence vary from 3% to 7% per year, “which translates into a doubling of rates every 10-20 years,” he said, noting that annual melanoma costs are approximately $3.3 billion.

While incidence rates are lower in non-White, non-Hispanic populations, poor outcomes are disproportionately higher in persons of color. Blacks present at diagnosis with more advanced stage disease and are 1.5 times more likely to die from melanoma, he said, while Hispanics are 2.4 times more likely to present with stage III disease and 3.6 times more likely to have distant metastases. Persons of color also have higher rates of mucosal, acral lentiginous, and subungual melanoma.

Known genetic risk factors for melanoma include having skin types I and II, particularly those with light hair, light eyes, and freckling, and those with a family history have a twofold increased risk. Also, up to 40% of genetic cases are from inherited mutations in CDKN2A, CDK4, BAP1, and MCR1. Other genetic-related risk factors include the number and size of nevi, having atypical nevus syndrome, DNA repair defects, large congenital nevi, and a personal history of melanoma.

The main environmental risk factor for melanoma is exposure to ultraviolet radiation. “You can break it down in terms of whether this exposure is lifetime, intermittent intense UV exposure, from the use of tanning beds, or due to sunburns during childhood,” Dr. Kent said at the meeting, which was hosted by Scripps MD Anderson Cancer Center. Other environmental risk factors include distance from the equator, having a high socioeconomic status, being immunosuppressed, and exposure to heavy metals, insecticides, or hormones.

In a recently published study, researchers investigated the risk factors associated with first and second primary melanomas in 38,845 patients who were followed in Australia between 2011 and 2018. During a median follow-up of 7.4 years, 1,212 patients (3.1%) had a single primary melanoma diagnosis and 245 (0.6%) had a secondary primary melanoma diagnosis. The researchers found that second melanomas were more likely than were first melanomas to be in situ; for invasive tumors, second melanomas were more likely to be thin (defined as 1 mm or less) than were first melanomas.

In addition, having many self-reported moles at age 21 years was more strongly associated with second melanomas compared with first melanomas (hazard ratio [HR], 6.36 vs. 3.46, respectively; P = .01), as was having a high genetic predisposition (HR, 3.28 vs. 2.06; P = .03).

Second melanomas were also more strongly associated with a history of multiple skin cancer excisions than were first melanomas (HR, 2.63 vs. 1.86; P = .05). “Interestingly, there were no differences in UV exposure between the first primary and second primary melanoma groups,” said Dr. Kent, who was not involved with the study.

He noted that while sunscreen use protects against melanoma, a National Ambulatory Medical Care Survey (NAMCS) found that internists and pediatricians mentioned sunscreen at fewer than 0.1% of visits – even those with patients who have a diagnosis of skin disease. “Physicians need to do better,” he said. “We as dermatologists have work to do to help educate them.”

Dr. Kent reported having no relevant disclosures.

SAN DIEGO – According to the latest American Cancer Society (ACS) data, cutaneous melanoma was the 5th most common cancer in 2022, with an estimated 99,780 new cases and 7,650 deaths, following cancer of the colorectal area, lung and bronchus, prostate, and breast.

“The incidence of melanoma seems to have continued to go up since the early 1990s,” David E. Kent, MD, a dermatologist who practices in Macon, Ga., said at the annual Cutaneous Malignancy Update. “The death rates have been flat and may have slightly decreased.”

In 2023, the ACS estimates that about 97,610 new melanomas will be diagnosed in the United States (58,120 men and 39,490 women), and about 7,990 people are expected to die of melanoma (5,420 men and 2,570 women). In addition, ACS data from 2017-2019 project that about 2.1% of men and women will be diagnosed with cutaneous melanoma in their lifetime. To date, more than 1.3 million people in the United States live with cutaneous melanoma, and the overall 5-year survival is 93.7%.

Epidemiologic studies show an increase in melanoma incidence, primarily among White populations. “This is believed to be due primarily to sun exposure and to changing recreational behaviors and tanning bed exposures,” said Dr. Kent, who holds a faculty position in the department of dermatology at the Medical College of Georgia, Augusta. Increased surveillance and diagnosis also play a role. In the medical literature, annual increases in melanoma incidence vary from 3% to 7% per year, “which translates into a doubling of rates every 10-20 years,” he said, noting that annual melanoma costs are approximately $3.3 billion.

While incidence rates are lower in non-White, non-Hispanic populations, poor outcomes are disproportionately higher in persons of color. Blacks present at diagnosis with more advanced stage disease and are 1.5 times more likely to die from melanoma, he said, while Hispanics are 2.4 times more likely to present with stage III disease and 3.6 times more likely to have distant metastases. Persons of color also have higher rates of mucosal, acral lentiginous, and subungual melanoma.

Known genetic risk factors for melanoma include having skin types I and II, particularly those with light hair, light eyes, and freckling, and those with a family history have a twofold increased risk. Also, up to 40% of genetic cases are from inherited mutations in CDKN2A, CDK4, BAP1, and MCR1. Other genetic-related risk factors include the number and size of nevi, having atypical nevus syndrome, DNA repair defects, large congenital nevi, and a personal history of melanoma.

The main environmental risk factor for melanoma is exposure to ultraviolet radiation. “You can break it down in terms of whether this exposure is lifetime, intermittent intense UV exposure, from the use of tanning beds, or due to sunburns during childhood,” Dr. Kent said at the meeting, which was hosted by Scripps MD Anderson Cancer Center. Other environmental risk factors include distance from the equator, having a high socioeconomic status, being immunosuppressed, and exposure to heavy metals, insecticides, or hormones.

In a recently published study, researchers investigated the risk factors associated with first and second primary melanomas in 38,845 patients who were followed in Australia between 2011 and 2018. During a median follow-up of 7.4 years, 1,212 patients (3.1%) had a single primary melanoma diagnosis and 245 (0.6%) had a secondary primary melanoma diagnosis. The researchers found that second melanomas were more likely than were first melanomas to be in situ; for invasive tumors, second melanomas were more likely to be thin (defined as 1 mm or less) than were first melanomas.

In addition, having many self-reported moles at age 21 years was more strongly associated with second melanomas compared with first melanomas (hazard ratio [HR], 6.36 vs. 3.46, respectively; P = .01), as was having a high genetic predisposition (HR, 3.28 vs. 2.06; P = .03).

Second melanomas were also more strongly associated with a history of multiple skin cancer excisions than were first melanomas (HR, 2.63 vs. 1.86; P = .05). “Interestingly, there were no differences in UV exposure between the first primary and second primary melanoma groups,” said Dr. Kent, who was not involved with the study.

He noted that while sunscreen use protects against melanoma, a National Ambulatory Medical Care Survey (NAMCS) found that internists and pediatricians mentioned sunscreen at fewer than 0.1% of visits – even those with patients who have a diagnosis of skin disease. “Physicians need to do better,” he said. “We as dermatologists have work to do to help educate them.”

Dr. Kent reported having no relevant disclosures.

Real-world, population-based data suggest that the discontinuation rates for biosimilars prescribed to treat inflammatory rheumatic diseases are similar to those for their corresponding originator biologics, according to a study of patients in British Columbia who were required to switch to biosimilars.

“The decision to mandate use of biosimilars provided an ideal context for a natural experiment,” Diane Lacaille, MD, chair in arthritis research at the University of British Columbia, Vancouver, explained in her presentation of the study at the annual meeting of the Canadian Rheumatology Association.

On the basis of the real-world data, which was collected before and after a province-wide requirement to use biosimilars in place of originator biologics, there was no major difference in discontinuation rates, an outcome that Dr. Lacaille characterized as “a surrogate for both efficacy and safety.”

In the 2019 rheumatoid arthritis treatment guidelines from the European Alliance of Associations for Rheumatology, biosimilars are advocated for addressing the high cost of biologics based on evidence of efficacy and safety comparable with originator biologics. According to one of the coauthors of those guidelines, Tom W. J. Huizinga, MD, PhD, head of rheumatology at Leiden (Netherlands) University Medical Center, there is reasonable confidence in biosimilars as an adequate substitute for originator drugs, but real-world data are welcome.

“Real-world data provide different information than controlled trials and long-term data as well, so these [Canadian findings] are useful to support the data from [randomized controlled trials],” Dr. Huizinga said in an interview. He was not involved in the Canadian study.
 

Survivorship evaluated after switch to biosimilars

In British Columbia, biosimilars were mandated province-wide for new prescriptions of infliximab and etanercept in June 2017. In 2019, the mandate was extended to patients already taking originator infliximab (Remicade) and originator etanercept (Enbrel). Since that time, the mandate for biosimilars has also been applied to adalimumab (Humira). For the comparison of infliximab and etanercept originators with their biosimilars, Dr. Lacaille and associates compared survivorship for the 3 years after the policy change, when patients were on biosimilars, with the 3 years prior to the change, when patients were on the originators. They compared survivorship with originator adalimumab with its biosimilars for prior to and after the switch.

”People were followed from anti-TNF [tumor necrosis factor] initiation until discontinuation for any reason,” reported Dr. Lacaille, who said data were censored for death and moving out of the province. In British Columbia, where there is universal health care, all dispensed medications can be tracked. The definition of anti-TNF discontinuation in this study was no prescription renewal for at least 6 months.

The follow-up was censored at March 2, 2020, to avoid the potential impact of COVID-19 on antirheumatic drug use. Discontinuation was standardized for the comparison of originator with biosimilar drugs as rates per 100 person-years. Statistical adjustments were made for potential confounders.

The researchers compared 1,312 patients on etanercept and 827 on a biosimilar of it, 230 patients on infliximab and 271 on a biosimilar of it, and 1,773 on adalimumab and 2,213 on a biosimilar of it. The indication was RA in approximately 60% of those on etanercept or a biosimilar and 50% of those on infliximab or adalimumab and their biosimilars. More than half of the remaining patients had indications for psoriatic arthritis, and the rest had ankylosing spondylitis.
 

No differences reach statistical significance

On the basis of discontinuation rates per 100 person-years, etanercept and its biosimilars performed almost identically (37.10 vs. 37.02, respectively). Although the discontinuation rate per 100 person-years was lower on infliximab than a biosimilar of it (29.97 vs. 37.96), the difference was not statistically significant (P = .076).

For adalimumab, the discontinuation rate was also lower on the originator drug than a biosimilar of it (32.92 vs. 36.36), but, again, this difference was also insignificant (P = .56).

When the discontinuation data were evaluated on the basis of a Cox model involving a propensity weight overlap, the univariate and the multivariable analyses found that the biosimilars had similar risks for discontinuation. Univariate analysis revealed hazard ratios for discontinuation of the biosimilar relative to the originator were 0.98 (P = .783) for etanercept, 1.17 (P = .242) for infliximab, and 1.08 (P = .09) for adalimumab. In the multivariable model, adjusted HRs for discontinuation were about the same for each of the biosimilars relative to the originator: 0.98 (P = .807) for etanercept, 1.19 (P = .183) for infliximab, and 1.08 (P = .089) for adalimumab.

Relative to previously published direct comparisons, this real-world analysis and its duration of follow-up address the limitations of formal trials. In a 2020 BMJ meta-analysis of published data from 45 trials comparing biosimilar with originator drugs in patients with RA who had failed methotrexate, the authors found only “minor differences in harms and benefits,” but they cautioned that the analysis was “hampered by a lack of long-term direct comparisons.”

In an interview, Dr. Huizinga noted that a systematic review of adalimumab biosimilars that he led 2 years ago showed that they perform comparably with the originator biologics. This and other published studies have consistently shown “that there is no difference between biologics and originators.”

Dr. Lacaille disclosed financial relationships with Fresenius Kabi, Janssen, Organon, Pfizer, and Viatris. Dr. Huizinga disclosed financial relationships with Abbott, Ablynx, Biotest, Bioscience, Boehringer Ingelheim, Bristol-Myers Squibb, Crescendo Bioscience, Eli Lilly, Galapagos, Janssen, Merck, Novartis, MycoMed, Roche, Sanofi-Aventis, Takeda, and Zydus.

Real-world, population-based data suggest that the discontinuation rates for biosimilars prescribed to treat inflammatory rheumatic diseases are similar to those for their corresponding originator biologics, according to a study of patients in British Columbia who were required to switch to biosimilars.

“The decision to mandate use of biosimilars provided an ideal context for a natural experiment,” Diane Lacaille, MD, chair in arthritis research at the University of British Columbia, Vancouver, explained in her presentation of the study at the annual meeting of the Canadian Rheumatology Association.

On the basis of the real-world data, which was collected before and after a province-wide requirement to use biosimilars in place of originator biologics, there was no major difference in discontinuation rates, an outcome that Dr. Lacaille characterized as “a surrogate for both efficacy and safety.”

In the 2019 rheumatoid arthritis treatment guidelines from the European Alliance of Associations for Rheumatology, biosimilars are advocated for addressing the high cost of biologics based on evidence of efficacy and safety comparable with originator biologics. According to one of the coauthors of those guidelines, Tom W. J. Huizinga, MD, PhD, head of rheumatology at Leiden (Netherlands) University Medical Center, there is reasonable confidence in biosimilars as an adequate substitute for originator drugs, but real-world data are welcome.

“Real-world data provide different information than controlled trials and long-term data as well, so these [Canadian findings] are useful to support the data from [randomized controlled trials],” Dr. Huizinga said in an interview. He was not involved in the Canadian study.
 

Survivorship evaluated after switch to biosimilars

In British Columbia, biosimilars were mandated province-wide for new prescriptions of infliximab and etanercept in June 2017. In 2019, the mandate was extended to patients already taking originator infliximab (Remicade) and originator etanercept (Enbrel). Since that time, the mandate for biosimilars has also been applied to adalimumab (Humira). For the comparison of infliximab and etanercept originators with their biosimilars, Dr. Lacaille and associates compared survivorship for the 3 years after the policy change, when patients were on biosimilars, with the 3 years prior to the change, when patients were on the originators. They compared survivorship with originator adalimumab with its biosimilars for prior to and after the switch.

”People were followed from anti-TNF [tumor necrosis factor] initiation until discontinuation for any reason,” reported Dr. Lacaille, who said data were censored for death and moving out of the province. In British Columbia, where there is universal health care, all dispensed medications can be tracked. The definition of anti-TNF discontinuation in this study was no prescription renewal for at least 6 months.

The follow-up was censored at March 2, 2020, to avoid the potential impact of COVID-19 on antirheumatic drug use. Discontinuation was standardized for the comparison of originator with biosimilar drugs as rates per 100 person-years. Statistical adjustments were made for potential confounders.

The researchers compared 1,312 patients on etanercept and 827 on a biosimilar of it, 230 patients on infliximab and 271 on a biosimilar of it, and 1,773 on adalimumab and 2,213 on a biosimilar of it. The indication was RA in approximately 60% of those on etanercept or a biosimilar and 50% of those on infliximab or adalimumab and their biosimilars. More than half of the remaining patients had indications for psoriatic arthritis, and the rest had ankylosing spondylitis.
 

No differences reach statistical significance

On the basis of discontinuation rates per 100 person-years, etanercept and its biosimilars performed almost identically (37.10 vs. 37.02, respectively). Although the discontinuation rate per 100 person-years was lower on infliximab than a biosimilar of it (29.97 vs. 37.96), the difference was not statistically significant (P = .076).

For adalimumab, the discontinuation rate was also lower on the originator drug than a biosimilar of it (32.92 vs. 36.36), but, again, this difference was also insignificant (P = .56).

When the discontinuation data were evaluated on the basis of a Cox model involving a propensity weight overlap, the univariate and the multivariable analyses found that the biosimilars had similar risks for discontinuation. Univariate analysis revealed hazard ratios for discontinuation of the biosimilar relative to the originator were 0.98 (P = .783) for etanercept, 1.17 (P = .242) for infliximab, and 1.08 (P = .09) for adalimumab. In the multivariable model, adjusted HRs for discontinuation were about the same for each of the biosimilars relative to the originator: 0.98 (P = .807) for etanercept, 1.19 (P = .183) for infliximab, and 1.08 (P = .089) for adalimumab.

Relative to previously published direct comparisons, this real-world analysis and its duration of follow-up address the limitations of formal trials. In a 2020 BMJ meta-analysis of published data from 45 trials comparing biosimilar with originator drugs in patients with RA who had failed methotrexate, the authors found only “minor differences in harms and benefits,” but they cautioned that the analysis was “hampered by a lack of long-term direct comparisons.”

In an interview, Dr. Huizinga noted that a systematic review of adalimumab biosimilars that he led 2 years ago showed that they perform comparably with the originator biologics. This and other published studies have consistently shown “that there is no difference between biologics and originators.”

Dr. Lacaille disclosed financial relationships with Fresenius Kabi, Janssen, Organon, Pfizer, and Viatris. Dr. Huizinga disclosed financial relationships with Abbott, Ablynx, Biotest, Bioscience, Boehringer Ingelheim, Bristol-Myers Squibb, Crescendo Bioscience, Eli Lilly, Galapagos, Janssen, Merck, Novartis, MycoMed, Roche, Sanofi-Aventis, Takeda, and Zydus.

Real-world, population-based data suggest that the discontinuation rates for biosimilars prescribed to treat inflammatory rheumatic diseases are similar to those for their corresponding originator biologics, according to a study of patients in British Columbia who were required to switch to biosimilars.

“The decision to mandate use of biosimilars provided an ideal context for a natural experiment,” Diane Lacaille, MD, chair in arthritis research at the University of British Columbia, Vancouver, explained in her presentation of the study at the annual meeting of the Canadian Rheumatology Association.

On the basis of the real-world data, which was collected before and after a province-wide requirement to use biosimilars in place of originator biologics, there was no major difference in discontinuation rates, an outcome that Dr. Lacaille characterized as “a surrogate for both efficacy and safety.”

In the 2019 rheumatoid arthritis treatment guidelines from the European Alliance of Associations for Rheumatology, biosimilars are advocated for addressing the high cost of biologics based on evidence of efficacy and safety comparable with originator biologics. According to one of the coauthors of those guidelines, Tom W. J. Huizinga, MD, PhD, head of rheumatology at Leiden (Netherlands) University Medical Center, there is reasonable confidence in biosimilars as an adequate substitute for originator drugs, but real-world data are welcome.

“Real-world data provide different information than controlled trials and long-term data as well, so these [Canadian findings] are useful to support the data from [randomized controlled trials],” Dr. Huizinga said in an interview. He was not involved in the Canadian study.
 

Survivorship evaluated after switch to biosimilars

In British Columbia, biosimilars were mandated province-wide for new prescriptions of infliximab and etanercept in June 2017. In 2019, the mandate was extended to patients already taking originator infliximab (Remicade) and originator etanercept (Enbrel). Since that time, the mandate for biosimilars has also been applied to adalimumab (Humira). For the comparison of infliximab and etanercept originators with their biosimilars, Dr. Lacaille and associates compared survivorship for the 3 years after the policy change, when patients were on biosimilars, with the 3 years prior to the change, when patients were on the originators. They compared survivorship with originator adalimumab with its biosimilars for prior to and after the switch.

”People were followed from anti-TNF [tumor necrosis factor] initiation until discontinuation for any reason,” reported Dr. Lacaille, who said data were censored for death and moving out of the province. In British Columbia, where there is universal health care, all dispensed medications can be tracked. The definition of anti-TNF discontinuation in this study was no prescription renewal for at least 6 months.

The follow-up was censored at March 2, 2020, to avoid the potential impact of COVID-19 on antirheumatic drug use. Discontinuation was standardized for the comparison of originator with biosimilar drugs as rates per 100 person-years. Statistical adjustments were made for potential confounders.

The researchers compared 1,312 patients on etanercept and 827 on a biosimilar of it, 230 patients on infliximab and 271 on a biosimilar of it, and 1,773 on adalimumab and 2,213 on a biosimilar of it. The indication was RA in approximately 60% of those on etanercept or a biosimilar and 50% of those on infliximab or adalimumab and their biosimilars. More than half of the remaining patients had indications for psoriatic arthritis, and the rest had ankylosing spondylitis.
 

No differences reach statistical significance

On the basis of discontinuation rates per 100 person-years, etanercept and its biosimilars performed almost identically (37.10 vs. 37.02, respectively). Although the discontinuation rate per 100 person-years was lower on infliximab than a biosimilar of it (29.97 vs. 37.96), the difference was not statistically significant (P = .076).

For adalimumab, the discontinuation rate was also lower on the originator drug than a biosimilar of it (32.92 vs. 36.36), but, again, this difference was also insignificant (P = .56).

When the discontinuation data were evaluated on the basis of a Cox model involving a propensity weight overlap, the univariate and the multivariable analyses found that the biosimilars had similar risks for discontinuation. Univariate analysis revealed hazard ratios for discontinuation of the biosimilar relative to the originator were 0.98 (P = .783) for etanercept, 1.17 (P = .242) for infliximab, and 1.08 (P = .09) for adalimumab. In the multivariable model, adjusted HRs for discontinuation were about the same for each of the biosimilars relative to the originator: 0.98 (P = .807) for etanercept, 1.19 (P = .183) for infliximab, and 1.08 (P = .089) for adalimumab.

Relative to previously published direct comparisons, this real-world analysis and its duration of follow-up address the limitations of formal trials. In a 2020 BMJ meta-analysis of published data from 45 trials comparing biosimilar with originator drugs in patients with RA who had failed methotrexate, the authors found only “minor differences in harms and benefits,” but they cautioned that the analysis was “hampered by a lack of long-term direct comparisons.”

In an interview, Dr. Huizinga noted that a systematic review of adalimumab biosimilars that he led 2 years ago showed that they perform comparably with the originator biologics. This and other published studies have consistently shown “that there is no difference between biologics and originators.”

Dr. Lacaille disclosed financial relationships with Fresenius Kabi, Janssen, Organon, Pfizer, and Viatris. Dr. Huizinga disclosed financial relationships with Abbott, Ablynx, Biotest, Bioscience, Boehringer Ingelheim, Bristol-Myers Squibb, Crescendo Bioscience, Eli Lilly, Galapagos, Janssen, Merck, Novartis, MycoMed, Roche, Sanofi-Aventis, Takeda, and Zydus.

Giving corticosteroids to pregnant women at risk for preterm birth before 34 weeks of gestational age has been the standard of care since the 1990s, but a few scenarios for their use remain up for debate. Two studies presented this week at the 2023 meeting sponsored by the Society for Maternal–Fetal Medicine provided some fresh insight into the practice that could help clinicians better manage pregnant patients.

Neurodevelopmental outcomes in late preterm

First, should antenatal corticosteroids (ACS) be given to mothers who present with late preterm labor, defined as 34-36 weeks’ gestational age?

A landmark randomized clinical trial published in 2016 demonstrated that use of ACS in mothers in late preterm labor reduced severe respiratory complications. That practice has largely been adopted by clinicians. The only downside, according to the researchers, was that infants whose mothers received steroid therapy were more likely to develop hypoglycemia. The condition is self-limiting, but studies have raised concern about the potential long-term risk of neurocognitive or psychological outcomes in infants with hypoglycemia.

Cynthia Gyamfi-Bannerman, MD, MSc, endowed chair and professor of obstetrics, gynecology, and reproductive sciences at the University of California, San Diego, led the 2016 study. Her team was unable to secure funding for their originally planned follow-up study of the infants 2 years later. But once the American College of Obstetricians and Gynecologists endorsed the practice and more women received ACS in the late preterm period, Dr. Gyamfi-Bannerman and her colleagues felt the need to “follow up the infants just to see what the outcomes are from a neurodevelopmental standpoint,” she said.

Dr. Gyamfi-Bannerman and colleagues recruited children older than age 6 from the original trial whose parents were willing to have them participate in a follow-up study. A total of 949 from the initial 2,831 cohort completed cognitive testing and received assessments for cerebral palsy, social impairment within the autism spectrum, and behavioral and emotional problems.

At the SMFM conference, Dr. Gyamfi-Bannerman reported no differences in the primary outcome of cognitive function between those whose mothers had received a single course of betamethasone and those who did not, or any differences in rates of the other outcomes.

Kathy Zhang-Rutledge, MD, a maternal-fetal medicine specialist who practices with Obstetrix Maternal Fetal Medicine Group of Houston, part of Pediatrix Medical Group, said she was glad to see a study that addressed the potential long-term adverse events associated with ACS in the late preterm period.

“Having this pretty large study – with really good neurological testing results – should help reassure clinicians that this is something they should consider adopting in their practice,” Dr. Zhang-Rutledge said.
 

Are boosters better?

The second unresolved question was if a repeat course of ACS should be administered when a woman at risk for preterm birth receives a course of steroids but does not deliver in the following 7 days.

Any benefits to the initial course of ACS wear off after a week. As a result, clinicians often give booster courses 7 days after the first dose if the infant is likely to be delivered in the following week. A 2009 study showed this approach may protect infants from respiratory problems, but data on long-term outcomes have been weak.

ACOG guidelines say to “consider” a booster dose in women who are less than 34 weeks’ gestation at risk for preterm delivery within 7 days.

The exception is when the mother already has experienced preterm prelabor rupture of membranes (PPROM), because ACS may increase the risk for infection for both mother and child. ACOG doesn’t take a stand on use of booster doses for PPROM, citing a lack of data to show that potential benefits outweigh the potential risks of this approach.

A recent multicenter, double-blinded, randomized clinical trial attempted to fill that void in knowledge. Between 2016 and 2022, 194 women with PPROM and gestational age less than 32 weeks who had received an initial ACS course at least 7 days prior to randomization received a booster course of ACS or saline placebo.

“Our primary outcome was designed to be like the prior rescue study (in 2009) that we did with patients with intact membranes,” said Andrew Combs, MD, PhD, a maternal-fetal medicine specialist at Pediatrix Medical Group in Sunrise, Fla., who participated in the earlier study. “It was a composite of neonatal morbidity that was any one of a variety of outcomes including respiratory distress syndrome, intraventricular hemorrhage, necrotizing enterocolitis, and neonatal death.”

The primary outcome occurred in 64% of women who received booster ACS and 66% with placebo (odds ratio, 0.82; 95% confidence interval, 0.43-1.57), according to Dr. Combs, who presented the findings at SMFM.

Although the study was not powered to detect significant differences in specific outcomes, the rate of neonatal sepsis was not higher in the ACS group, suggesting that ACS may be safe if membranes have ruptured, the researchers reported. But because the booster course of ACS did not prevent respiratory morbidity, clinicians may wonder what to do with the findings.

Niraj Chavan, MD, an associate professor in the department of obstetrics, gynecology, and women’s health at Saint Louis University, said he was unsure how the study would affect clinical practice.

The relatively small sample number of patients prevented analysis of specific outcomes and subgroup analyses of important variables such as race, ethnicity, gestational age, and other comorbid conditions in the mothers, he said. So clinicians still must weigh potential risks and benefits on a case-by-case basis.

“You have to think about it in buckets,” he said, “One is conditions that would increase the risk for neonatal morbidity. The other is the risk for infection, both for the mom and the baby.”

But for Dr. Combs, the interpretation of the findings was simpler: “We concluded that there’s no indication to give a booster course of steroids after a week has elapsed in patients with ruptured membranes.”

The study presented by Dr. Gyamfi-Bannerman was funded by the National Institute of Child Health and Human Development. The study presented by Dr. Combs was funded by MEDNAX Center for Research, Education, and Quality, which in 2022 was renamed Pediatrix Center for Research, Education,and Quality. Dr. Combs is an employee of Pediatrix Medical Group but has no conflicts of interest. Dr. Gyamfi-Bannerman, Dr. Zhang-Rutledge, and Dr. Chavan report no relevant financial relationships.

Ann Thomas is a pediatrician and epidemiologist in Portland, Ore.

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

Giving corticosteroids to pregnant women at risk for preterm birth before 34 weeks of gestational age has been the standard of care since the 1990s, but a few scenarios for their use remain up for debate. Two studies presented this week at the 2023 meeting sponsored by the Society for Maternal–Fetal Medicine provided some fresh insight into the practice that could help clinicians better manage pregnant patients.

Neurodevelopmental outcomes in late preterm

First, should antenatal corticosteroids (ACS) be given to mothers who present with late preterm labor, defined as 34-36 weeks’ gestational age?

A landmark randomized clinical trial published in 2016 demonstrated that use of ACS in mothers in late preterm labor reduced severe respiratory complications. That practice has largely been adopted by clinicians. The only downside, according to the researchers, was that infants whose mothers received steroid therapy were more likely to develop hypoglycemia. The condition is self-limiting, but studies have raised concern about the potential long-term risk of neurocognitive or psychological outcomes in infants with hypoglycemia.

Cynthia Gyamfi-Bannerman, MD, MSc, endowed chair and professor of obstetrics, gynecology, and reproductive sciences at the University of California, San Diego, led the 2016 study. Her team was unable to secure funding for their originally planned follow-up study of the infants 2 years later. But once the American College of Obstetricians and Gynecologists endorsed the practice and more women received ACS in the late preterm period, Dr. Gyamfi-Bannerman and her colleagues felt the need to “follow up the infants just to see what the outcomes are from a neurodevelopmental standpoint,” she said.

Dr. Gyamfi-Bannerman and colleagues recruited children older than age 6 from the original trial whose parents were willing to have them participate in a follow-up study. A total of 949 from the initial 2,831 cohort completed cognitive testing and received assessments for cerebral palsy, social impairment within the autism spectrum, and behavioral and emotional problems.

At the SMFM conference, Dr. Gyamfi-Bannerman reported no differences in the primary outcome of cognitive function between those whose mothers had received a single course of betamethasone and those who did not, or any differences in rates of the other outcomes.

Kathy Zhang-Rutledge, MD, a maternal-fetal medicine specialist who practices with Obstetrix Maternal Fetal Medicine Group of Houston, part of Pediatrix Medical Group, said she was glad to see a study that addressed the potential long-term adverse events associated with ACS in the late preterm period.

“Having this pretty large study – with really good neurological testing results – should help reassure clinicians that this is something they should consider adopting in their practice,” Dr. Zhang-Rutledge said.
 

Are boosters better?

The second unresolved question was if a repeat course of ACS should be administered when a woman at risk for preterm birth receives a course of steroids but does not deliver in the following 7 days.

Any benefits to the initial course of ACS wear off after a week. As a result, clinicians often give booster courses 7 days after the first dose if the infant is likely to be delivered in the following week. A 2009 study showed this approach may protect infants from respiratory problems, but data on long-term outcomes have been weak.

ACOG guidelines say to “consider” a booster dose in women who are less than 34 weeks’ gestation at risk for preterm delivery within 7 days.

The exception is when the mother already has experienced preterm prelabor rupture of membranes (PPROM), because ACS may increase the risk for infection for both mother and child. ACOG doesn’t take a stand on use of booster doses for PPROM, citing a lack of data to show that potential benefits outweigh the potential risks of this approach.

A recent multicenter, double-blinded, randomized clinical trial attempted to fill that void in knowledge. Between 2016 and 2022, 194 women with PPROM and gestational age less than 32 weeks who had received an initial ACS course at least 7 days prior to randomization received a booster course of ACS or saline placebo.

“Our primary outcome was designed to be like the prior rescue study (in 2009) that we did with patients with intact membranes,” said Andrew Combs, MD, PhD, a maternal-fetal medicine specialist at Pediatrix Medical Group in Sunrise, Fla., who participated in the earlier study. “It was a composite of neonatal morbidity that was any one of a variety of outcomes including respiratory distress syndrome, intraventricular hemorrhage, necrotizing enterocolitis, and neonatal death.”

The primary outcome occurred in 64% of women who received booster ACS and 66% with placebo (odds ratio, 0.82; 95% confidence interval, 0.43-1.57), according to Dr. Combs, who presented the findings at SMFM.

Although the study was not powered to detect significant differences in specific outcomes, the rate of neonatal sepsis was not higher in the ACS group, suggesting that ACS may be safe if membranes have ruptured, the researchers reported. But because the booster course of ACS did not prevent respiratory morbidity, clinicians may wonder what to do with the findings.

Niraj Chavan, MD, an associate professor in the department of obstetrics, gynecology, and women’s health at Saint Louis University, said he was unsure how the study would affect clinical practice.

The relatively small sample number of patients prevented analysis of specific outcomes and subgroup analyses of important variables such as race, ethnicity, gestational age, and other comorbid conditions in the mothers, he said. So clinicians still must weigh potential risks and benefits on a case-by-case basis.

“You have to think about it in buckets,” he said, “One is conditions that would increase the risk for neonatal morbidity. The other is the risk for infection, both for the mom and the baby.”

But for Dr. Combs, the interpretation of the findings was simpler: “We concluded that there’s no indication to give a booster course of steroids after a week has elapsed in patients with ruptured membranes.”

The study presented by Dr. Gyamfi-Bannerman was funded by the National Institute of Child Health and Human Development. The study presented by Dr. Combs was funded by MEDNAX Center for Research, Education, and Quality, which in 2022 was renamed Pediatrix Center for Research, Education,and Quality. Dr. Combs is an employee of Pediatrix Medical Group but has no conflicts of interest. Dr. Gyamfi-Bannerman, Dr. Zhang-Rutledge, and Dr. Chavan report no relevant financial relationships.

Ann Thomas is a pediatrician and epidemiologist in Portland, Ore.

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

Giving corticosteroids to pregnant women at risk for preterm birth before 34 weeks of gestational age has been the standard of care since the 1990s, but a few scenarios for their use remain up for debate. Two studies presented this week at the 2023 meeting sponsored by the Society for Maternal–Fetal Medicine provided some fresh insight into the practice that could help clinicians better manage pregnant patients.

Neurodevelopmental outcomes in late preterm

First, should antenatal corticosteroids (ACS) be given to mothers who present with late preterm labor, defined as 34-36 weeks’ gestational age?

A landmark randomized clinical trial published in 2016 demonstrated that use of ACS in mothers in late preterm labor reduced severe respiratory complications. That practice has largely been adopted by clinicians. The only downside, according to the researchers, was that infants whose mothers received steroid therapy were more likely to develop hypoglycemia. The condition is self-limiting, but studies have raised concern about the potential long-term risk of neurocognitive or psychological outcomes in infants with hypoglycemia.

Cynthia Gyamfi-Bannerman, MD, MSc, endowed chair and professor of obstetrics, gynecology, and reproductive sciences at the University of California, San Diego, led the 2016 study. Her team was unable to secure funding for their originally planned follow-up study of the infants 2 years later. But once the American College of Obstetricians and Gynecologists endorsed the practice and more women received ACS in the late preterm period, Dr. Gyamfi-Bannerman and her colleagues felt the need to “follow up the infants just to see what the outcomes are from a neurodevelopmental standpoint,” she said.

Dr. Gyamfi-Bannerman and colleagues recruited children older than age 6 from the original trial whose parents were willing to have them participate in a follow-up study. A total of 949 from the initial 2,831 cohort completed cognitive testing and received assessments for cerebral palsy, social impairment within the autism spectrum, and behavioral and emotional problems.

At the SMFM conference, Dr. Gyamfi-Bannerman reported no differences in the primary outcome of cognitive function between those whose mothers had received a single course of betamethasone and those who did not, or any differences in rates of the other outcomes.

Kathy Zhang-Rutledge, MD, a maternal-fetal medicine specialist who practices with Obstetrix Maternal Fetal Medicine Group of Houston, part of Pediatrix Medical Group, said she was glad to see a study that addressed the potential long-term adverse events associated with ACS in the late preterm period.

“Having this pretty large study – with really good neurological testing results – should help reassure clinicians that this is something they should consider adopting in their practice,” Dr. Zhang-Rutledge said.
 

Are boosters better?

The second unresolved question was if a repeat course of ACS should be administered when a woman at risk for preterm birth receives a course of steroids but does not deliver in the following 7 days.

Any benefits to the initial course of ACS wear off after a week. As a result, clinicians often give booster courses 7 days after the first dose if the infant is likely to be delivered in the following week. A 2009 study showed this approach may protect infants from respiratory problems, but data on long-term outcomes have been weak.

ACOG guidelines say to “consider” a booster dose in women who are less than 34 weeks’ gestation at risk for preterm delivery within 7 days.

The exception is when the mother already has experienced preterm prelabor rupture of membranes (PPROM), because ACS may increase the risk for infection for both mother and child. ACOG doesn’t take a stand on use of booster doses for PPROM, citing a lack of data to show that potential benefits outweigh the potential risks of this approach.

A recent multicenter, double-blinded, randomized clinical trial attempted to fill that void in knowledge. Between 2016 and 2022, 194 women with PPROM and gestational age less than 32 weeks who had received an initial ACS course at least 7 days prior to randomization received a booster course of ACS or saline placebo.

“Our primary outcome was designed to be like the prior rescue study (in 2009) that we did with patients with intact membranes,” said Andrew Combs, MD, PhD, a maternal-fetal medicine specialist at Pediatrix Medical Group in Sunrise, Fla., who participated in the earlier study. “It was a composite of neonatal morbidity that was any one of a variety of outcomes including respiratory distress syndrome, intraventricular hemorrhage, necrotizing enterocolitis, and neonatal death.”

The primary outcome occurred in 64% of women who received booster ACS and 66% with placebo (odds ratio, 0.82; 95% confidence interval, 0.43-1.57), according to Dr. Combs, who presented the findings at SMFM.

Although the study was not powered to detect significant differences in specific outcomes, the rate of neonatal sepsis was not higher in the ACS group, suggesting that ACS may be safe if membranes have ruptured, the researchers reported. But because the booster course of ACS did not prevent respiratory morbidity, clinicians may wonder what to do with the findings.

Niraj Chavan, MD, an associate professor in the department of obstetrics, gynecology, and women’s health at Saint Louis University, said he was unsure how the study would affect clinical practice.

The relatively small sample number of patients prevented analysis of specific outcomes and subgroup analyses of important variables such as race, ethnicity, gestational age, and other comorbid conditions in the mothers, he said. So clinicians still must weigh potential risks and benefits on a case-by-case basis.

“You have to think about it in buckets,” he said, “One is conditions that would increase the risk for neonatal morbidity. The other is the risk for infection, both for the mom and the baby.”

But for Dr. Combs, the interpretation of the findings was simpler: “We concluded that there’s no indication to give a booster course of steroids after a week has elapsed in patients with ruptured membranes.”

The study presented by Dr. Gyamfi-Bannerman was funded by the National Institute of Child Health and Human Development. The study presented by Dr. Combs was funded by MEDNAX Center for Research, Education, and Quality, which in 2022 was renamed Pediatrix Center for Research, Education,and Quality. Dr. Combs is an employee of Pediatrix Medical Group but has no conflicts of interest. Dr. Gyamfi-Bannerman, Dr. Zhang-Rutledge, and Dr. Chavan report no relevant financial relationships.

Ann Thomas is a pediatrician and epidemiologist in Portland, Ore.

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

Performing endovascular thrombectomy in patients with an ischemic stroke having a large ischemic core has been found to be beneficial in a major international trial, which is expected to lead to a change in clinical practice and the way in which systems of stroke care are organized.

The results of the SELECT2 trial, which was conducted in sites in the United States, Canada, Europe, Australia, and New Zealand, showed that endovascular thrombectomy plus medical care resulted in better clinical outcomes than medical care alone in patients with a large ischemic core who presented within 24 hours after the time they were last known to be well.

The results of the SELECT2 trial were presented at the International Stroke Conference by Amrou Sarraj, MD. Dr. Sarraj is professor of neurology at University Hospitals Cleveland Medical Center–Case Western Reserve University in Ohio. The study was also simultaneously published online in the New England Journal of Medicine.

A similar trial conducted in China, the ANGEL-ASPECT trial, was also presented at the same ISC session and showed very similar results.

These two trials add to another Japanese study reported last year, the RESCUE-JAPAN LIMIT trial, also showing benefit of thrombectomy in patients with large core strokes.

Dr. Sarraj concluded that the results of these three trials together “unequivocally demonstrate the benefit of endovascular thrombectomy in patients with large ischemic core.”
 

A clear benefit

Approximately 20% of large-vessel occlusion strokes have a large core, but these patients have not been considered candidates for endovascular thrombectomy because of concerns about potential reperfusion injury in necrotic brain tissue, resulting in an increased risk of hemorrhage, edema, disability, and death.

This has resulted in uncertainty about how to manage these patients with a core infarct, Dr. Sarraj noted at the conference presented by the American Stroke Association, a division of the American Heart Association. 

The SELECT2 trial involved patients with stroke as a result of occlusion of the internal carotid artery or the first segment of the middle cerebral artery. Patients had a large ischemic core volume, defined as an ASPECTS (Alberta Stroke Program Early Computed Tomography Score) of 3-5, or a core volume of at least 50 mL on imaging. They were randomly assigned to endovascular thrombectomy plus medical care or to medical care alone.

The trial was aiming to enroll 560 patients but was stopped early for efficacy after 178 patients had been assigned to the thrombectomy group and 174 to the medical-care group.

The primary outcome – the generalized odds ratio for a shift in the distribution of modified Rankin scale scores toward better outcomes in favor of thrombectomy was 1.51 (P < .001).

“This translates into a 60% probability of achieving a better functional outcome in patients receiving thrombectomy, with a number needed to treat of five. That means five patients need to be treated with thrombectomy for one to achieve a better functional outcome,” Dr. Sarraj stated. 

The secondary outcome of functional independence at 90 days (a score on the modified Rankin scale of 0-2) occurred in 20% of the patients in the thrombectomy group and 7% in the medical-care group (relative risk, 2.97), with a number needed to treat of seven.

Independent ambulation (a score on the modified Rankin Scale of 0-3) at 90 days occurred in 37.9% of the patients in the thrombectomy group and in 18.7% of the patients in the medical-care group (relative risk, 2.06), with a number needed to treat of five.

Mortality was similar in the two groups.

The results for other secondary outcomes were generally in the same direction as those of the primary analysis, with the possible exception of early neurologic improvement, the authors reported.

The incidence of symptomatic intracranial hemorrhage was low in both trial groups, occurring in one patient in the thrombectomy group and two in the medical care group.

The investigators pointed out that previous studies have reported rates of symptomatic intracranial hemorrhage in patients with large ischemic core lesions that are higher than those in this trial. “Therefore, the low percentage of patients with symptomatic intracranial hemorrhage observed in both trial groups was unexpected.”

Approximately 20% of the patients in the thrombectomy group had complications associated with the procedure. In the thrombectomy group, arterial access-site complications occurred in 5 patients, dissection in 10, cerebral vessel perforation in 7, and transient vasospasm in 11.

Early neurologic worsening, defined as an increase of 4 or more points on the National Institutes of Health Stroke Scale (NIHSS), occurred in 24.7% in the thrombectomy group and in 15.5% in the medical-care group (relative risk, 1.59).

In a post-hoc analysis, “from which no conclusions can be drawn,” the authors reported,  early neurologic worsening was associated with worse functional outcomes at 90 days, and patients who had neurologic worsening had larger ischemic core lesions at baseline (median volume, 107 mL) versus 77 mL among patients without neurologic worsening.

They noted that a potential cause of deterioration in some of these patients was brain edema associated with reperfusion. However, they emphasize that overall, endovascular thrombectomy was associated with better outcomes than medical care alone.

“Two-thirds of patients had core infarct sizes more than 70 mL, and one-third of patients had core infarct sizes of more than 100 mL, but even in patients with large and very large core volumes, thrombectomy was superior to medical care alone,” Dr. Sarraj said.
 

This will ‘change practice’

In a comment, ISC 2023 chair Tudor Jovin, MD, Cooper Neurological Institute, Cherry Hill, N.J., said: “This trial shows that even patients with a large core infarct who we would not have treated with thrombectomy in the past, actually do benefit from this procedure. And the surprise is that the benefit is nearly to the same extent as that in patients with smaller core infarcts. That is going to change practice.”

Dr. Jovin said that these results should not only change the selection of patients for thrombectomy, but they should also change systems of care. “Because the systems of care now are based around excluding these patients with large infarcts. We won’t need to do that in future.”

He elaborated: “I think imaging has held us back to be honest. We can exclude hemorrhage with a plain CT scan. Then after this, the biggest piece of information we need from imaging is the size of the infarct. We were concerned that we might hurt the patient if the infarct was large. Outside hospitals had to do advanced imaging before deciding whether to transfer patients for thrombectomy. These are all sources of delays.

“I am very pleased to see these results, and I hope to see a much more simplified triage of patients that will be more liberal to patients with the large infarcts,” he added.

Also commenting, Joseph Broderick, MD, professor of neurology and director of the Neuroscience Institute at the University of Cincinnati, said the results were “robust and important.” 

He said the results of the SELECT2 trial, along with the other two similar trials, “will change practice and extend endovascular therapy to more patients with severe strokes.”

But Dr. Broderick believes imaging will still be necessary to exclude patients with ASPECTS scores of 0-2, who were not included in these trials. “These are patients who have very large areas of clear hypodensity on the baseline image (brain already dying or dead). These patients do not benefit from reperfusion with lytic drugs or endovascular therapy,” he noted.
 

‘Welcome news’

In an editorial accompanying the print publication of the two new studies, Pierre Fayad, MD, University of Nebraska Medical Center, Omaha, points out that all three trials of thrombectomy in patients with large core infarct strokes “showed remarkably similar results” despite differences in design, patient selection, thrombolytic treatment and dose, geographic location, and imaging criteria.

“Together, the trials provide reassuring information from more than a thousand patients with large ischemic strokes in different medical systems that will probably lead to changes in patterns of care delivery.”

Dr. Fayad said it is reasonable to suggest that endovascular thrombectomy be offered to patients with large strokes if they arrive in a timely fashion at a center that is capable of performing the procedure, and if the patients have an ASPECTS value of 3-5 or an ischemic core volume of 50 mL or greater.

Higher rates of good outcomes may be anticipated if this treatment is performed, despite increased risks of symptomatic hemorrhage, edema, neurologic worsening, and hemicraniectomy, he noted.  

“Patients and families should be made aware of the limitations of treatment and the anticipated residual neurologic deficits resulting from the large infarction. The improved chance of independent walking and the ability to perform other daily activities in patients with the most severe strokes is welcome news for patients and for the field of stroke treatment,” he concluded.

The SELECT2 trial was supported by an investigator-initiated grant from Stryker Neurovascular to University Hospitals Cleveland Medical Center and the University of Texas McGovern Medical School.

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

Performing endovascular thrombectomy in patients with an ischemic stroke having a large ischemic core has been found to be beneficial in a major international trial, which is expected to lead to a change in clinical practice and the way in which systems of stroke care are organized.

The results of the SELECT2 trial, which was conducted in sites in the United States, Canada, Europe, Australia, and New Zealand, showed that endovascular thrombectomy plus medical care resulted in better clinical outcomes than medical care alone in patients with a large ischemic core who presented within 24 hours after the time they were last known to be well.

The results of the SELECT2 trial were presented at the International Stroke Conference by Amrou Sarraj, MD. Dr. Sarraj is professor of neurology at University Hospitals Cleveland Medical Center–Case Western Reserve University in Ohio. The study was also simultaneously published online in the New England Journal of Medicine.

A similar trial conducted in China, the ANGEL-ASPECT trial, was also presented at the same ISC session and showed very similar results.

These two trials add to another Japanese study reported last year, the RESCUE-JAPAN LIMIT trial, also showing benefit of thrombectomy in patients with large core strokes.

Dr. Sarraj concluded that the results of these three trials together “unequivocally demonstrate the benefit of endovascular thrombectomy in patients with large ischemic core.”
 

A clear benefit

Approximately 20% of large-vessel occlusion strokes have a large core, but these patients have not been considered candidates for endovascular thrombectomy because of concerns about potential reperfusion injury in necrotic brain tissue, resulting in an increased risk of hemorrhage, edema, disability, and death.

This has resulted in uncertainty about how to manage these patients with a core infarct, Dr. Sarraj noted at the conference presented by the American Stroke Association, a division of the American Heart Association. 

The SELECT2 trial involved patients with stroke as a result of occlusion of the internal carotid artery or the first segment of the middle cerebral artery. Patients had a large ischemic core volume, defined as an ASPECTS (Alberta Stroke Program Early Computed Tomography Score) of 3-5, or a core volume of at least 50 mL on imaging. They were randomly assigned to endovascular thrombectomy plus medical care or to medical care alone.

The trial was aiming to enroll 560 patients but was stopped early for efficacy after 178 patients had been assigned to the thrombectomy group and 174 to the medical-care group.

The primary outcome – the generalized odds ratio for a shift in the distribution of modified Rankin scale scores toward better outcomes in favor of thrombectomy was 1.51 (P < .001).

“This translates into a 60% probability of achieving a better functional outcome in patients receiving thrombectomy, with a number needed to treat of five. That means five patients need to be treated with thrombectomy for one to achieve a better functional outcome,” Dr. Sarraj stated. 

The secondary outcome of functional independence at 90 days (a score on the modified Rankin scale of 0-2) occurred in 20% of the patients in the thrombectomy group and 7% in the medical-care group (relative risk, 2.97), with a number needed to treat of seven.

Independent ambulation (a score on the modified Rankin Scale of 0-3) at 90 days occurred in 37.9% of the patients in the thrombectomy group and in 18.7% of the patients in the medical-care group (relative risk, 2.06), with a number needed to treat of five.

Mortality was similar in the two groups.

The results for other secondary outcomes were generally in the same direction as those of the primary analysis, with the possible exception of early neurologic improvement, the authors reported.

The incidence of symptomatic intracranial hemorrhage was low in both trial groups, occurring in one patient in the thrombectomy group and two in the medical care group.

The investigators pointed out that previous studies have reported rates of symptomatic intracranial hemorrhage in patients with large ischemic core lesions that are higher than those in this trial. “Therefore, the low percentage of patients with symptomatic intracranial hemorrhage observed in both trial groups was unexpected.”

Approximately 20% of the patients in the thrombectomy group had complications associated with the procedure. In the thrombectomy group, arterial access-site complications occurred in 5 patients, dissection in 10, cerebral vessel perforation in 7, and transient vasospasm in 11.

Early neurologic worsening, defined as an increase of 4 or more points on the National Institutes of Health Stroke Scale (NIHSS), occurred in 24.7% in the thrombectomy group and in 15.5% in the medical-care group (relative risk, 1.59).

In a post-hoc analysis, “from which no conclusions can be drawn,” the authors reported,  early neurologic worsening was associated with worse functional outcomes at 90 days, and patients who had neurologic worsening had larger ischemic core lesions at baseline (median volume, 107 mL) versus 77 mL among patients without neurologic worsening.

They noted that a potential cause of deterioration in some of these patients was brain edema associated with reperfusion. However, they emphasize that overall, endovascular thrombectomy was associated with better outcomes than medical care alone.

“Two-thirds of patients had core infarct sizes more than 70 mL, and one-third of patients had core infarct sizes of more than 100 mL, but even in patients with large and very large core volumes, thrombectomy was superior to medical care alone,” Dr. Sarraj said.
 

This will ‘change practice’

In a comment, ISC 2023 chair Tudor Jovin, MD, Cooper Neurological Institute, Cherry Hill, N.J., said: “This trial shows that even patients with a large core infarct who we would not have treated with thrombectomy in the past, actually do benefit from this procedure. And the surprise is that the benefit is nearly to the same extent as that in patients with smaller core infarcts. That is going to change practice.”

Dr. Jovin said that these results should not only change the selection of patients for thrombectomy, but they should also change systems of care. “Because the systems of care now are based around excluding these patients with large infarcts. We won’t need to do that in future.”

He elaborated: “I think imaging has held us back to be honest. We can exclude hemorrhage with a plain CT scan. Then after this, the biggest piece of information we need from imaging is the size of the infarct. We were concerned that we might hurt the patient if the infarct was large. Outside hospitals had to do advanced imaging before deciding whether to transfer patients for thrombectomy. These are all sources of delays.

“I am very pleased to see these results, and I hope to see a much more simplified triage of patients that will be more liberal to patients with the large infarcts,” he added.

Also commenting, Joseph Broderick, MD, professor of neurology and director of the Neuroscience Institute at the University of Cincinnati, said the results were “robust and important.” 

He said the results of the SELECT2 trial, along with the other two similar trials, “will change practice and extend endovascular therapy to more patients with severe strokes.”

But Dr. Broderick believes imaging will still be necessary to exclude patients with ASPECTS scores of 0-2, who were not included in these trials. “These are patients who have very large areas of clear hypodensity on the baseline image (brain already dying or dead). These patients do not benefit from reperfusion with lytic drugs or endovascular therapy,” he noted.
 

‘Welcome news’

In an editorial accompanying the print publication of the two new studies, Pierre Fayad, MD, University of Nebraska Medical Center, Omaha, points out that all three trials of thrombectomy in patients with large core infarct strokes “showed remarkably similar results” despite differences in design, patient selection, thrombolytic treatment and dose, geographic location, and imaging criteria.

“Together, the trials provide reassuring information from more than a thousand patients with large ischemic strokes in different medical systems that will probably lead to changes in patterns of care delivery.”

Dr. Fayad said it is reasonable to suggest that endovascular thrombectomy be offered to patients with large strokes if they arrive in a timely fashion at a center that is capable of performing the procedure, and if the patients have an ASPECTS value of 3-5 or an ischemic core volume of 50 mL or greater.

Higher rates of good outcomes may be anticipated if this treatment is performed, despite increased risks of symptomatic hemorrhage, edema, neurologic worsening, and hemicraniectomy, he noted.  

“Patients and families should be made aware of the limitations of treatment and the anticipated residual neurologic deficits resulting from the large infarction. The improved chance of independent walking and the ability to perform other daily activities in patients with the most severe strokes is welcome news for patients and for the field of stroke treatment,” he concluded.

The SELECT2 trial was supported by an investigator-initiated grant from Stryker Neurovascular to University Hospitals Cleveland Medical Center and the University of Texas McGovern Medical School.

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

Performing endovascular thrombectomy in patients with an ischemic stroke having a large ischemic core has been found to be beneficial in a major international trial, which is expected to lead to a change in clinical practice and the way in which systems of stroke care are organized.

The results of the SELECT2 trial, which was conducted in sites in the United States, Canada, Europe, Australia, and New Zealand, showed that endovascular thrombectomy plus medical care resulted in better clinical outcomes than medical care alone in patients with a large ischemic core who presented within 24 hours after the time they were last known to be well.

The results of the SELECT2 trial were presented at the International Stroke Conference by Amrou Sarraj, MD. Dr. Sarraj is professor of neurology at University Hospitals Cleveland Medical Center–Case Western Reserve University in Ohio. The study was also simultaneously published online in the New England Journal of Medicine.

A similar trial conducted in China, the ANGEL-ASPECT trial, was also presented at the same ISC session and showed very similar results.

These two trials add to another Japanese study reported last year, the RESCUE-JAPAN LIMIT trial, also showing benefit of thrombectomy in patients with large core strokes.

Dr. Sarraj concluded that the results of these three trials together “unequivocally demonstrate the benefit of endovascular thrombectomy in patients with large ischemic core.”
 

A clear benefit

Approximately 20% of large-vessel occlusion strokes have a large core, but these patients have not been considered candidates for endovascular thrombectomy because of concerns about potential reperfusion injury in necrotic brain tissue, resulting in an increased risk of hemorrhage, edema, disability, and death.

This has resulted in uncertainty about how to manage these patients with a core infarct, Dr. Sarraj noted at the conference presented by the American Stroke Association, a division of the American Heart Association. 

The SELECT2 trial involved patients with stroke as a result of occlusion of the internal carotid artery or the first segment of the middle cerebral artery. Patients had a large ischemic core volume, defined as an ASPECTS (Alberta Stroke Program Early Computed Tomography Score) of 3-5, or a core volume of at least 50 mL on imaging. They were randomly assigned to endovascular thrombectomy plus medical care or to medical care alone.

The trial was aiming to enroll 560 patients but was stopped early for efficacy after 178 patients had been assigned to the thrombectomy group and 174 to the medical-care group.

The primary outcome – the generalized odds ratio for a shift in the distribution of modified Rankin scale scores toward better outcomes in favor of thrombectomy was 1.51 (P < .001).

“This translates into a 60% probability of achieving a better functional outcome in patients receiving thrombectomy, with a number needed to treat of five. That means five patients need to be treated with thrombectomy for one to achieve a better functional outcome,” Dr. Sarraj stated. 

The secondary outcome of functional independence at 90 days (a score on the modified Rankin scale of 0-2) occurred in 20% of the patients in the thrombectomy group and 7% in the medical-care group (relative risk, 2.97), with a number needed to treat of seven.

Independent ambulation (a score on the modified Rankin Scale of 0-3) at 90 days occurred in 37.9% of the patients in the thrombectomy group and in 18.7% of the patients in the medical-care group (relative risk, 2.06), with a number needed to treat of five.

Mortality was similar in the two groups.

The results for other secondary outcomes were generally in the same direction as those of the primary analysis, with the possible exception of early neurologic improvement, the authors reported.

The incidence of symptomatic intracranial hemorrhage was low in both trial groups, occurring in one patient in the thrombectomy group and two in the medical care group.

The investigators pointed out that previous studies have reported rates of symptomatic intracranial hemorrhage in patients with large ischemic core lesions that are higher than those in this trial. “Therefore, the low percentage of patients with symptomatic intracranial hemorrhage observed in both trial groups was unexpected.”

Approximately 20% of the patients in the thrombectomy group had complications associated with the procedure. In the thrombectomy group, arterial access-site complications occurred in 5 patients, dissection in 10, cerebral vessel perforation in 7, and transient vasospasm in 11.

Early neurologic worsening, defined as an increase of 4 or more points on the National Institutes of Health Stroke Scale (NIHSS), occurred in 24.7% in the thrombectomy group and in 15.5% in the medical-care group (relative risk, 1.59).

In a post-hoc analysis, “from which no conclusions can be drawn,” the authors reported,  early neurologic worsening was associated with worse functional outcomes at 90 days, and patients who had neurologic worsening had larger ischemic core lesions at baseline (median volume, 107 mL) versus 77 mL among patients without neurologic worsening.

They noted that a potential cause of deterioration in some of these patients was brain edema associated with reperfusion. However, they emphasize that overall, endovascular thrombectomy was associated with better outcomes than medical care alone.

“Two-thirds of patients had core infarct sizes more than 70 mL, and one-third of patients had core infarct sizes of more than 100 mL, but even in patients with large and very large core volumes, thrombectomy was superior to medical care alone,” Dr. Sarraj said.
 

This will ‘change practice’

In a comment, ISC 2023 chair Tudor Jovin, MD, Cooper Neurological Institute, Cherry Hill, N.J., said: “This trial shows that even patients with a large core infarct who we would not have treated with thrombectomy in the past, actually do benefit from this procedure. And the surprise is that the benefit is nearly to the same extent as that in patients with smaller core infarcts. That is going to change practice.”

Dr. Jovin said that these results should not only change the selection of patients for thrombectomy, but they should also change systems of care. “Because the systems of care now are based around excluding these patients with large infarcts. We won’t need to do that in future.”

He elaborated: “I think imaging has held us back to be honest. We can exclude hemorrhage with a plain CT scan. Then after this, the biggest piece of information we need from imaging is the size of the infarct. We were concerned that we might hurt the patient if the infarct was large. Outside hospitals had to do advanced imaging before deciding whether to transfer patients for thrombectomy. These are all sources of delays.

“I am very pleased to see these results, and I hope to see a much more simplified triage of patients that will be more liberal to patients with the large infarcts,” he added.

Also commenting, Joseph Broderick, MD, professor of neurology and director of the Neuroscience Institute at the University of Cincinnati, said the results were “robust and important.” 

He said the results of the SELECT2 trial, along with the other two similar trials, “will change practice and extend endovascular therapy to more patients with severe strokes.”

But Dr. Broderick believes imaging will still be necessary to exclude patients with ASPECTS scores of 0-2, who were not included in these trials. “These are patients who have very large areas of clear hypodensity on the baseline image (brain already dying or dead). These patients do not benefit from reperfusion with lytic drugs or endovascular therapy,” he noted.
 

‘Welcome news’

In an editorial accompanying the print publication of the two new studies, Pierre Fayad, MD, University of Nebraska Medical Center, Omaha, points out that all three trials of thrombectomy in patients with large core infarct strokes “showed remarkably similar results” despite differences in design, patient selection, thrombolytic treatment and dose, geographic location, and imaging criteria.

“Together, the trials provide reassuring information from more than a thousand patients with large ischemic strokes in different medical systems that will probably lead to changes in patterns of care delivery.”

Dr. Fayad said it is reasonable to suggest that endovascular thrombectomy be offered to patients with large strokes if they arrive in a timely fashion at a center that is capable of performing the procedure, and if the patients have an ASPECTS value of 3-5 or an ischemic core volume of 50 mL or greater.

Higher rates of good outcomes may be anticipated if this treatment is performed, despite increased risks of symptomatic hemorrhage, edema, neurologic worsening, and hemicraniectomy, he noted.  

“Patients and families should be made aware of the limitations of treatment and the anticipated residual neurologic deficits resulting from the large infarction. The improved chance of independent walking and the ability to perform other daily activities in patients with the most severe strokes is welcome news for patients and for the field of stroke treatment,” he concluded.

The SELECT2 trial was supported by an investigator-initiated grant from Stryker Neurovascular to University Hospitals Cleveland Medical Center and the University of Texas McGovern Medical School.

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

Artificially lowering blood pressure in stroke patients following endovascular therapy is not necessarily a good strategy, new research suggests. Preliminary results of a new study showed that using an antihypertensive drug to target systolic blood pressure to below 160 mm Hg or 140 mm Hg in these patients may not be beneficial, and may even be harmful.

“This line of inquiry is probably not worth pursuing,” said stroke neurologist Eva A. Mistry, MBBS, MSCI, assistant professor of clinical neurology and rehabilitation medicine, University of Cincinnati.

Following current blood pressure guidelines in these patients (so targeting blood pressure under 180/105 mm Hg) “is probably reasonable,” unless the patient’s systolic blood pressure goes above 180, Dr. Mistry said. “Artificially trying to lower it may result in harm, at least in terms of the disability outcome.”

The findings were presented at the 2023 International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.

Endovascular therapy has become standard of care for patients with large vessel occlusion after studies showed “massive benefit,” yet about 50% of patients remain disabled or die at 90 days, Dr. Mistry said.

“We have been on the quest to understand if there’s something we can do to improve these outcomes.”

One approach could be optimizing medical management. Previous observational studies showed that higher blood pressure values after thrombectomy are associated with worse outcomes.
 

Taking it forward

“We wanted to take that forward in a randomized inquiry to see first with this trial if [artificially] lowering blood pressure using medications is safe, and preliminarily understand if it could be efficacious in a larger trial,” she said.

This blood pressure–lowering strategy is already practiced in some centers. A nationwide survey conducted by Dr. Mistry and her colleagues showed a wide range of targets, with some institutions aiming it as low as under 120 mm Hg after thrombectomy, which she found “surprising.”

The Blood pressure after Endovascular Stroke Treatment-II (BEST-II) study included 120 ischemic stroke patients at three stroke centers, mean age 70 years and 57% female, who had undergone endovascular treatment. They were randomized to one of three target blood pressure groups: 180 mm Hg or under, less than 160 mm Hg, or under 140 mm Hg.

To lower blood pressure, researchers used intravenous nicardipine, a calcium channel blocker, as a first line. This was started within 1 hour of the endovascular treatment and given for 24 hours if the patient’s systolic blood pressure was above the target of their group.

In the highest target group (≤180 mm Hg), the average systolic blood pressure reached 129 mm Hg. In the middle target group (<160 mm Hg), the average systolic blood pressure was 131 mm Hg, and in the lowest target group (<140 mm Hg), systolic blood pressure was lowered to an average of 123 mm Hg.
 

Mean infarct volumes

At 36 hours, the mean adjusted infarct volume was slightly lower in the lowest blood pressure target group (32.4), compared with the other groups (46.4 for the 180 mm Hg group and 50.7 for the under-160 mm Hg group).

“Based on a model or a slope that would be associated with serial lowering of blood pressure targets, we found the point estimate of the effect size was slightly in the direction of benefit of lower blood pressure targets in terms of lower infarct volume,” Dr. Mistry said.

But this was not conclusive. While the point estimate was in the direction of benefit, Dr. Mistry stressed that the trial design doesn’t “definitely rule out” the possibility of harm.

Researchers also measured functional status at 90 days with the modified Rankin Scale (mRS). They found that the utility-weighted mRS was slightly lower in the lowest blood pressure target group (0.507), compared with the higher target groups (0.584 and 0.475, respectively, for the 180 mm Hg and under-160 mm Hg groups).

“The effect size was slightly in the direction of harm,” Dr. Mistry said. “To me, that means there might be safety issues associated with the lower blood pressure target.”
 

Probably futile

The results suggest that studying this issue further is probably futile. “If lowering blood pressure improves outcomes, that improvement is fairly marginal, and there are trends that suggest that, in fact, it might be harmful,” Dr. Mistry said. Her researcher team “believes it would not be the wisest decision” to pursue this strategy any further in a phase 3 study, she said.

“We wanted to understand whether or not we should spend millions of dollars to do a thousand-patient or two thousand-patient trial, and the answer to that is probably not.”

And there are other therapeutics “we can test that might be more promising than this approach,” she added.

In the meantime, Dr. Mistry stressed that clinicians should be cautious about automatically lowering blood pressure in this patient population and that decisions to target lower levels should be done on an individual basis.
 

Timely and important

In a comment, Karen Furie, MD, MPH, chair of neurology, Brown University, Providence, R.I., said that the study is “timely and important,” given the uncertainty about management of blood pressure after opening the vessel again using endovascular treatment.

“We already knew that letting the blood pressure go very high after reperfusion was bad, and this study shows that lowering it may also pose a risk, and I think that’s an important message for the community.”

The results send a cautionary message to clinicians but do not provide definitive evidence, she added. “Perhaps in the future we will have a better understanding of what the optimal range is.”

Dr. Furie stressed that this was a small pilot study and conclusions are “guarded.”

“I think the authors didn’t want to overinterpret the results so they ended up concluding that because the final disability might have been worse in the patients who had their blood pressure significantly lowered, recommending that as an approach across the board is sort of discouraged.”

Instead, the authors indicated that there may be factors such as degree of recanalization, size of the infarct, or other patient-specific factors “that would dictate where you target blood pressures,” Dr. Furie said.

The study was funded by the National Institutes of Health/National Institute of Neurological Disorders and Stroke. Mistry receives funding from the Patient-Centered Outcomes Research Institute and compensation from the American Heart Association for editorial activities, and is a consultant for RapidAI. Dr. Furie has declared no relevant financial relationships.

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

Artificially lowering blood pressure in stroke patients following endovascular therapy is not necessarily a good strategy, new research suggests. Preliminary results of a new study showed that using an antihypertensive drug to target systolic blood pressure to below 160 mm Hg or 140 mm Hg in these patients may not be beneficial, and may even be harmful.

“This line of inquiry is probably not worth pursuing,” said stroke neurologist Eva A. Mistry, MBBS, MSCI, assistant professor of clinical neurology and rehabilitation medicine, University of Cincinnati.

Following current blood pressure guidelines in these patients (so targeting blood pressure under 180/105 mm Hg) “is probably reasonable,” unless the patient’s systolic blood pressure goes above 180, Dr. Mistry said. “Artificially trying to lower it may result in harm, at least in terms of the disability outcome.”

The findings were presented at the 2023 International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.

Endovascular therapy has become standard of care for patients with large vessel occlusion after studies showed “massive benefit,” yet about 50% of patients remain disabled or die at 90 days, Dr. Mistry said.

“We have been on the quest to understand if there’s something we can do to improve these outcomes.”

One approach could be optimizing medical management. Previous observational studies showed that higher blood pressure values after thrombectomy are associated with worse outcomes.
 

Taking it forward

“We wanted to take that forward in a randomized inquiry to see first with this trial if [artificially] lowering blood pressure using medications is safe, and preliminarily understand if it could be efficacious in a larger trial,” she said.

This blood pressure–lowering strategy is already practiced in some centers. A nationwide survey conducted by Dr. Mistry and her colleagues showed a wide range of targets, with some institutions aiming it as low as under 120 mm Hg after thrombectomy, which she found “surprising.”

The Blood pressure after Endovascular Stroke Treatment-II (BEST-II) study included 120 ischemic stroke patients at three stroke centers, mean age 70 years and 57% female, who had undergone endovascular treatment. They were randomized to one of three target blood pressure groups: 180 mm Hg or under, less than 160 mm Hg, or under 140 mm Hg.

To lower blood pressure, researchers used intravenous nicardipine, a calcium channel blocker, as a first line. This was started within 1 hour of the endovascular treatment and given for 24 hours if the patient’s systolic blood pressure was above the target of their group.

In the highest target group (≤180 mm Hg), the average systolic blood pressure reached 129 mm Hg. In the middle target group (<160 mm Hg), the average systolic blood pressure was 131 mm Hg, and in the lowest target group (<140 mm Hg), systolic blood pressure was lowered to an average of 123 mm Hg.
 

Mean infarct volumes

At 36 hours, the mean adjusted infarct volume was slightly lower in the lowest blood pressure target group (32.4), compared with the other groups (46.4 for the 180 mm Hg group and 50.7 for the under-160 mm Hg group).

“Based on a model or a slope that would be associated with serial lowering of blood pressure targets, we found the point estimate of the effect size was slightly in the direction of benefit of lower blood pressure targets in terms of lower infarct volume,” Dr. Mistry said.

But this was not conclusive. While the point estimate was in the direction of benefit, Dr. Mistry stressed that the trial design doesn’t “definitely rule out” the possibility of harm.

Researchers also measured functional status at 90 days with the modified Rankin Scale (mRS). They found that the utility-weighted mRS was slightly lower in the lowest blood pressure target group (0.507), compared with the higher target groups (0.584 and 0.475, respectively, for the 180 mm Hg and under-160 mm Hg groups).

“The effect size was slightly in the direction of harm,” Dr. Mistry said. “To me, that means there might be safety issues associated with the lower blood pressure target.”
 

Probably futile

The results suggest that studying this issue further is probably futile. “If lowering blood pressure improves outcomes, that improvement is fairly marginal, and there are trends that suggest that, in fact, it might be harmful,” Dr. Mistry said. Her researcher team “believes it would not be the wisest decision” to pursue this strategy any further in a phase 3 study, she said.

“We wanted to understand whether or not we should spend millions of dollars to do a thousand-patient or two thousand-patient trial, and the answer to that is probably not.”

And there are other therapeutics “we can test that might be more promising than this approach,” she added.

In the meantime, Dr. Mistry stressed that clinicians should be cautious about automatically lowering blood pressure in this patient population and that decisions to target lower levels should be done on an individual basis.
 

Timely and important

In a comment, Karen Furie, MD, MPH, chair of neurology, Brown University, Providence, R.I., said that the study is “timely and important,” given the uncertainty about management of blood pressure after opening the vessel again using endovascular treatment.

“We already knew that letting the blood pressure go very high after reperfusion was bad, and this study shows that lowering it may also pose a risk, and I think that’s an important message for the community.”

The results send a cautionary message to clinicians but do not provide definitive evidence, she added. “Perhaps in the future we will have a better understanding of what the optimal range is.”

Dr. Furie stressed that this was a small pilot study and conclusions are “guarded.”

“I think the authors didn’t want to overinterpret the results so they ended up concluding that because the final disability might have been worse in the patients who had their blood pressure significantly lowered, recommending that as an approach across the board is sort of discouraged.”

Instead, the authors indicated that there may be factors such as degree of recanalization, size of the infarct, or other patient-specific factors “that would dictate where you target blood pressures,” Dr. Furie said.

The study was funded by the National Institutes of Health/National Institute of Neurological Disorders and Stroke. Mistry receives funding from the Patient-Centered Outcomes Research Institute and compensation from the American Heart Association for editorial activities, and is a consultant for RapidAI. Dr. Furie has declared no relevant financial relationships.

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

Artificially lowering blood pressure in stroke patients following endovascular therapy is not necessarily a good strategy, new research suggests. Preliminary results of a new study showed that using an antihypertensive drug to target systolic blood pressure to below 160 mm Hg or 140 mm Hg in these patients may not be beneficial, and may even be harmful.

“This line of inquiry is probably not worth pursuing,” said stroke neurologist Eva A. Mistry, MBBS, MSCI, assistant professor of clinical neurology and rehabilitation medicine, University of Cincinnati.

Following current blood pressure guidelines in these patients (so targeting blood pressure under 180/105 mm Hg) “is probably reasonable,” unless the patient’s systolic blood pressure goes above 180, Dr. Mistry said. “Artificially trying to lower it may result in harm, at least in terms of the disability outcome.”

The findings were presented at the 2023 International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.

Endovascular therapy has become standard of care for patients with large vessel occlusion after studies showed “massive benefit,” yet about 50% of patients remain disabled or die at 90 days, Dr. Mistry said.

“We have been on the quest to understand if there’s something we can do to improve these outcomes.”

One approach could be optimizing medical management. Previous observational studies showed that higher blood pressure values after thrombectomy are associated with worse outcomes.
 

Taking it forward

“We wanted to take that forward in a randomized inquiry to see first with this trial if [artificially] lowering blood pressure using medications is safe, and preliminarily understand if it could be efficacious in a larger trial,” she said.

This blood pressure–lowering strategy is already practiced in some centers. A nationwide survey conducted by Dr. Mistry and her colleagues showed a wide range of targets, with some institutions aiming it as low as under 120 mm Hg after thrombectomy, which she found “surprising.”

The Blood pressure after Endovascular Stroke Treatment-II (BEST-II) study included 120 ischemic stroke patients at three stroke centers, mean age 70 years and 57% female, who had undergone endovascular treatment. They were randomized to one of three target blood pressure groups: 180 mm Hg or under, less than 160 mm Hg, or under 140 mm Hg.

To lower blood pressure, researchers used intravenous nicardipine, a calcium channel blocker, as a first line. This was started within 1 hour of the endovascular treatment and given for 24 hours if the patient’s systolic blood pressure was above the target of their group.

In the highest target group (≤180 mm Hg), the average systolic blood pressure reached 129 mm Hg. In the middle target group (<160 mm Hg), the average systolic blood pressure was 131 mm Hg, and in the lowest target group (<140 mm Hg), systolic blood pressure was lowered to an average of 123 mm Hg.
 

Mean infarct volumes

At 36 hours, the mean adjusted infarct volume was slightly lower in the lowest blood pressure target group (32.4), compared with the other groups (46.4 for the 180 mm Hg group and 50.7 for the under-160 mm Hg group).

“Based on a model or a slope that would be associated with serial lowering of blood pressure targets, we found the point estimate of the effect size was slightly in the direction of benefit of lower blood pressure targets in terms of lower infarct volume,” Dr. Mistry said.

But this was not conclusive. While the point estimate was in the direction of benefit, Dr. Mistry stressed that the trial design doesn’t “definitely rule out” the possibility of harm.

Researchers also measured functional status at 90 days with the modified Rankin Scale (mRS). They found that the utility-weighted mRS was slightly lower in the lowest blood pressure target group (0.507), compared with the higher target groups (0.584 and 0.475, respectively, for the 180 mm Hg and under-160 mm Hg groups).

“The effect size was slightly in the direction of harm,” Dr. Mistry said. “To me, that means there might be safety issues associated with the lower blood pressure target.”
 

Probably futile

The results suggest that studying this issue further is probably futile. “If lowering blood pressure improves outcomes, that improvement is fairly marginal, and there are trends that suggest that, in fact, it might be harmful,” Dr. Mistry said. Her researcher team “believes it would not be the wisest decision” to pursue this strategy any further in a phase 3 study, she said.

“We wanted to understand whether or not we should spend millions of dollars to do a thousand-patient or two thousand-patient trial, and the answer to that is probably not.”

And there are other therapeutics “we can test that might be more promising than this approach,” she added.

In the meantime, Dr. Mistry stressed that clinicians should be cautious about automatically lowering blood pressure in this patient population and that decisions to target lower levels should be done on an individual basis.
 

Timely and important

In a comment, Karen Furie, MD, MPH, chair of neurology, Brown University, Providence, R.I., said that the study is “timely and important,” given the uncertainty about management of blood pressure after opening the vessel again using endovascular treatment.

“We already knew that letting the blood pressure go very high after reperfusion was bad, and this study shows that lowering it may also pose a risk, and I think that’s an important message for the community.”

The results send a cautionary message to clinicians but do not provide definitive evidence, she added. “Perhaps in the future we will have a better understanding of what the optimal range is.”

Dr. Furie stressed that this was a small pilot study and conclusions are “guarded.”

“I think the authors didn’t want to overinterpret the results so they ended up concluding that because the final disability might have been worse in the patients who had their blood pressure significantly lowered, recommending that as an approach across the board is sort of discouraged.”

Instead, the authors indicated that there may be factors such as degree of recanalization, size of the infarct, or other patient-specific factors “that would dictate where you target blood pressures,” Dr. Furie said.

The study was funded by the National Institutes of Health/National Institute of Neurological Disorders and Stroke. Mistry receives funding from the Patient-Centered Outcomes Research Institute and compensation from the American Heart Association for editorial activities, and is a consultant for RapidAI. Dr. Furie has declared no relevant financial relationships.

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

Infants born to women infected with the hepatitis C virus (HCV) faced twice the risk of stays in the neonatal ICU (NICU) and 2.7 times the risk of low birth weight, a new analysis finds, even when researchers adjusted their data to control for injectable drug use and maternal medical comorbidity.

Clinicians should be “aware that the infants of pregnant people with HCV may have a high rate of need for higher-level pediatric care,” said Brenna L. Hughes, MD, MSc, chief of maternal fetal medicine at Duke University Medical Center, Durham, N.C. She spoke in an interview about the findings, which were presented at the meeting sponsored by the Society for Maternal-Fetal Medicine.

As Dr. Hughes noted, “HCV remains a serious problem in pregnancy because it often goes undiagnosed and/or untreated prior to pregnancy. It can be passed to infants, and this can cause significant health-related outcomes for children as they age.”

For the multicenter U.S. study, researchers identified 249 pregnant mothers with HCV from a 2012-2018 cohort and matched them by gestational age to controls (n = 486). The average age was 28; 71.1% of the cases were non-Hispanic White versus 41.6% of the controls; 8.4% of cases were non-Hispanic Black versus 32.1% of controls (P < .001 for race/ethnicity analysis); and 73% of cases were smokers versus 18% of controls (P < .001). More than 19% of cases reported injectable drug use during pregnancy versus 0.2% of controls (P < .001).

The researchers adjusted their findings for maternal age, body mass index, injectable drug use, and maternal comorbidity.

An earlier analysis of the study data found that 6% of pregnant women with HCV passed it on to their infants, especially those with high levels of virus in their systems. For the new study, researchers focused on various outcomes to test the assumption that “adverse pregnancy outcomes associated with HCV are related to prematurity or to ongoing use of injection drugs,” Dr. Hughes said.

There was no increase in rates of preterm birth or adverse maternal outcomes in the HCV cases. However, infants born to women with HCV were more likely than the controls to require a stay in the NICU (45% vs. 19%; adjusted relative risk, 1.99; 95% confidence interval, 1.54-2.58). They were also more likely to have lower birth weights (small for gestational age < 5th percentile) (10.6% vs. 3.1%; ARR, 2.72; 95% CI, 1.38-5.34).

No difference in outcomes was seen when HCV cases with viremia (33%) were excluded.

“The most surprising finding was that the need for higher-level pediatric care was so high even though there wasn’t an increased risk of prematurity,” Dr. Hughes said.

She added it’s not clear why NICU stays and low birth weights were more common in infants of women with HCV. “It is possible that the higher risk of need for higher-level pediatric care was related to a need for observation or treatment due to use of opioid replacement therapies with opioid agonists.” As for lower birth weight, “there may be other unmeasured risk factors.”

Tatyana Kushner, MD, MSCE, of the division of liver diseases at Icahn School of Medicine at Mount Sinai, New York, said in an interview that the study adds to limited data about HCV in pregnancy. “These findings have been demonstrated in prior studies, and it would be important to tease apart whether [low birth weight] is related to the virus itself or more related to other confounding associated factors such as maternal substance use as well as other associated social determinants of health among women with HCV.”

As for the study’s message, Dr. Kushner said it makes it clear that “hepatitis C adversely impacts outcomes of pregnancy and it is important to identify women of childbearing age for treatment early, ideally prior to pregnancy, in order to improve their pregnancy outcomes. In addition, treatment of hepatitis C during pregnancy should be explored further to determine if treatment during pregnancy can improve outcomes.”

At the moment, she said, “there are ongoing studies to delineate the safety and efficacy of hepatitis C treatment during pregnancy. Given that we are screening for hepatitis C during pregnancy, we need clear recommendations on the use of direct-acting antivirals in people who screen positive.”

The study was funded by the National Institute of Child Health and Human Development. The authors have no disclosures. Dr. Kushner disclosed research support (Gilead) and advisory board service (Gilead, AbbVie, Bausch, GlaxoSmithKline, and Eiger).

Infants born to women infected with the hepatitis C virus (HCV) faced twice the risk of stays in the neonatal ICU (NICU) and 2.7 times the risk of low birth weight, a new analysis finds, even when researchers adjusted their data to control for injectable drug use and maternal medical comorbidity.

Clinicians should be “aware that the infants of pregnant people with HCV may have a high rate of need for higher-level pediatric care,” said Brenna L. Hughes, MD, MSc, chief of maternal fetal medicine at Duke University Medical Center, Durham, N.C. She spoke in an interview about the findings, which were presented at the meeting sponsored by the Society for Maternal-Fetal Medicine.

As Dr. Hughes noted, “HCV remains a serious problem in pregnancy because it often goes undiagnosed and/or untreated prior to pregnancy. It can be passed to infants, and this can cause significant health-related outcomes for children as they age.”

For the multicenter U.S. study, researchers identified 249 pregnant mothers with HCV from a 2012-2018 cohort and matched them by gestational age to controls (n = 486). The average age was 28; 71.1% of the cases were non-Hispanic White versus 41.6% of the controls; 8.4% of cases were non-Hispanic Black versus 32.1% of controls (P < .001 for race/ethnicity analysis); and 73% of cases were smokers versus 18% of controls (P < .001). More than 19% of cases reported injectable drug use during pregnancy versus 0.2% of controls (P < .001).

The researchers adjusted their findings for maternal age, body mass index, injectable drug use, and maternal comorbidity.

An earlier analysis of the study data found that 6% of pregnant women with HCV passed it on to their infants, especially those with high levels of virus in their systems. For the new study, researchers focused on various outcomes to test the assumption that “adverse pregnancy outcomes associated with HCV are related to prematurity or to ongoing use of injection drugs,” Dr. Hughes said.

There was no increase in rates of preterm birth or adverse maternal outcomes in the HCV cases. However, infants born to women with HCV were more likely than the controls to require a stay in the NICU (45% vs. 19%; adjusted relative risk, 1.99; 95% confidence interval, 1.54-2.58). They were also more likely to have lower birth weights (small for gestational age < 5th percentile) (10.6% vs. 3.1%; ARR, 2.72; 95% CI, 1.38-5.34).

No difference in outcomes was seen when HCV cases with viremia (33%) were excluded.

“The most surprising finding was that the need for higher-level pediatric care was so high even though there wasn’t an increased risk of prematurity,” Dr. Hughes said.

She added it’s not clear why NICU stays and low birth weights were more common in infants of women with HCV. “It is possible that the higher risk of need for higher-level pediatric care was related to a need for observation or treatment due to use of opioid replacement therapies with opioid agonists.” As for lower birth weight, “there may be other unmeasured risk factors.”

Tatyana Kushner, MD, MSCE, of the division of liver diseases at Icahn School of Medicine at Mount Sinai, New York, said in an interview that the study adds to limited data about HCV in pregnancy. “These findings have been demonstrated in prior studies, and it would be important to tease apart whether [low birth weight] is related to the virus itself or more related to other confounding associated factors such as maternal substance use as well as other associated social determinants of health among women with HCV.”

As for the study’s message, Dr. Kushner said it makes it clear that “hepatitis C adversely impacts outcomes of pregnancy and it is important to identify women of childbearing age for treatment early, ideally prior to pregnancy, in order to improve their pregnancy outcomes. In addition, treatment of hepatitis C during pregnancy should be explored further to determine if treatment during pregnancy can improve outcomes.”

At the moment, she said, “there are ongoing studies to delineate the safety and efficacy of hepatitis C treatment during pregnancy. Given that we are screening for hepatitis C during pregnancy, we need clear recommendations on the use of direct-acting antivirals in people who screen positive.”

The study was funded by the National Institute of Child Health and Human Development. The authors have no disclosures. Dr. Kushner disclosed research support (Gilead) and advisory board service (Gilead, AbbVie, Bausch, GlaxoSmithKline, and Eiger).

Infants born to women infected with the hepatitis C virus (HCV) faced twice the risk of stays in the neonatal ICU (NICU) and 2.7 times the risk of low birth weight, a new analysis finds, even when researchers adjusted their data to control for injectable drug use and maternal medical comorbidity.

Clinicians should be “aware that the infants of pregnant people with HCV may have a high rate of need for higher-level pediatric care,” said Brenna L. Hughes, MD, MSc, chief of maternal fetal medicine at Duke University Medical Center, Durham, N.C. She spoke in an interview about the findings, which were presented at the meeting sponsored by the Society for Maternal-Fetal Medicine.

As Dr. Hughes noted, “HCV remains a serious problem in pregnancy because it often goes undiagnosed and/or untreated prior to pregnancy. It can be passed to infants, and this can cause significant health-related outcomes for children as they age.”

For the multicenter U.S. study, researchers identified 249 pregnant mothers with HCV from a 2012-2018 cohort and matched them by gestational age to controls (n = 486). The average age was 28; 71.1% of the cases were non-Hispanic White versus 41.6% of the controls; 8.4% of cases were non-Hispanic Black versus 32.1% of controls (P < .001 for race/ethnicity analysis); and 73% of cases were smokers versus 18% of controls (P < .001). More than 19% of cases reported injectable drug use during pregnancy versus 0.2% of controls (P < .001).

The researchers adjusted their findings for maternal age, body mass index, injectable drug use, and maternal comorbidity.

An earlier analysis of the study data found that 6% of pregnant women with HCV passed it on to their infants, especially those with high levels of virus in their systems. For the new study, researchers focused on various outcomes to test the assumption that “adverse pregnancy outcomes associated with HCV are related to prematurity or to ongoing use of injection drugs,” Dr. Hughes said.

There was no increase in rates of preterm birth or adverse maternal outcomes in the HCV cases. However, infants born to women with HCV were more likely than the controls to require a stay in the NICU (45% vs. 19%; adjusted relative risk, 1.99; 95% confidence interval, 1.54-2.58). They were also more likely to have lower birth weights (small for gestational age < 5th percentile) (10.6% vs. 3.1%; ARR, 2.72; 95% CI, 1.38-5.34).

No difference in outcomes was seen when HCV cases with viremia (33%) were excluded.

“The most surprising finding was that the need for higher-level pediatric care was so high even though there wasn’t an increased risk of prematurity,” Dr. Hughes said.

She added it’s not clear why NICU stays and low birth weights were more common in infants of women with HCV. “It is possible that the higher risk of need for higher-level pediatric care was related to a need for observation or treatment due to use of opioid replacement therapies with opioid agonists.” As for lower birth weight, “there may be other unmeasured risk factors.”

Tatyana Kushner, MD, MSCE, of the division of liver diseases at Icahn School of Medicine at Mount Sinai, New York, said in an interview that the study adds to limited data about HCV in pregnancy. “These findings have been demonstrated in prior studies, and it would be important to tease apart whether [low birth weight] is related to the virus itself or more related to other confounding associated factors such as maternal substance use as well as other associated social determinants of health among women with HCV.”

As for the study’s message, Dr. Kushner said it makes it clear that “hepatitis C adversely impacts outcomes of pregnancy and it is important to identify women of childbearing age for treatment early, ideally prior to pregnancy, in order to improve their pregnancy outcomes. In addition, treatment of hepatitis C during pregnancy should be explored further to determine if treatment during pregnancy can improve outcomes.”

At the moment, she said, “there are ongoing studies to delineate the safety and efficacy of hepatitis C treatment during pregnancy. Given that we are screening for hepatitis C during pregnancy, we need clear recommendations on the use of direct-acting antivirals in people who screen positive.”

The study was funded by the National Institute of Child Health and Human Development. The authors have no disclosures. Dr. Kushner disclosed research support (Gilead) and advisory board service (Gilead, AbbVie, Bausch, GlaxoSmithKline, and Eiger).

In the STROKE AF study, among patients who had a stroke presumably caused by atherosclerosis, the rate of atrial fibrillation (AFib) was almost 22% at 3 years, as detected by continuous monitoring.

The 3-year results from the study were presented by Lee H. Schwamm, MD, of Massachusetts General Hospital, Boston, at the International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.

Dr. Schwamm said the high rate of AFib detection in this study suggests that continuous monitoring for AFib should be considered for a larger population of stroke patients, rather than just those with cryptogenic stroke.

“We found a much higher rate of AF[ib] than we expected in this population of patients who have had an atherosclerotic stroke,” Dr. Schwamm said in an interview.

“These AF[ib] occurrences were found by a device, so they are known as ‘device-documented AF[ib].’ The patient is not generally aware of symptoms, but 67% of the AF[ib] episodes lasted for more than 1 hour, showing that this is not trivial AF[ib]. This is meaningful AF[ib],” he said.

Dr. Schwamm said the major question is whether these cases of AFib that are detected with a device warrant treatment with anticoagulation. He noted that, in this study, clinicians decided to provide anticoagulation to 70%-80% of patients in whom AFib was detected.

“If we think it deserves treatment, then we have to look for it. And if we care about finding AF[ib], we have no choice but to monitor continuously,” he said.

“If this data doesn’t convince you that AF[ib] is present in this population, I don’t think any data will. Because it is consistent, it accumulates over time and looks remarkably similar to a set of data that we have all become very comfortable with – the CRYSTAL-AF study in patients with cryptogenic stroke,” he stated.

Dr. Schwamm noted that the STROKE AF trial was not based on the cause of the index stroke; rather, it was asking whether there are risk factors that could contribute to the 25% stroke recurrence rate in this population that are not covered in current guidelines.

“I’m really trying to move away from the anchor that I was trained in, which is to figure out the cause of the last stroke to help decide how to prevent the next stroke, towards more of a probabilistic model – of what is all the information I have at my disposal and how do I act on it to prevent the next stroke? We have to start thinking differently about building models for future stroke risk and determining therapy based on that,” he commented.
 

Changing practice

ISC 2023 program chair Tudor Jovin, MD, Cooper Neurological Institute, Cherry Hill, N.J., and moderator of the session at which the results were presented, discussed the STROKE AF results in a highlights presentation.

“To me as clinician, these results are even more relevant than those at 12 months,” Dr. Jovin said. “The lesson I took is that AF[ib] is even more prevalent than we thought. The burden of AF[ib] is significant in these patients, and it doesn’t seem to be limited to a particular time. These are very thought-provoking results which are going to change clinical practice. I think the threshold for long-term monitoring will be lower.”

Comoderator Lauren Sansing, MD, Yale University, New Haven, Conn., added: “This study shows that the longer we monitor, the more patients with AF[ib] we are likely to pick up. And because in two-thirds of patients with AF[ib], it lasted longer than 1 hour, I do believe this was clinically relevant AF[ib]. The question now is, do we monitor everyone? I think it puts the burden on us to search for AF[ib] in our patients.”

In his presentation, Dr. Schwamm explained that, on the basis of the CRYSTAL-AF study, insertable cardiac monitoring devices are frequently used to identify poststroke AFib in patients with cryptogenic stroke. In the device-monitored arm of that study, AFib was detected in 12.4% of patients over 12 months versus 2.0% in the control arm.

“However, we don’t know how often AF[ib] is detected in other presumed stroke types – largely those due to atherosclerosis,” he said.

He pointed out that, at present, long-term monitoring post stroke for the detection of AFib is not currently recommended for patients with ischemic stroke, owing to presumed small-vessel occlusion or large-artery atherosclerosis.

“In these patients, we are not suspecting AF[ib] because we believe the cause of the stroke was not embolic. But we wanted to investigate what the AF[ib] risk is in these patients, who often have multiple stroke risk factors,” he said.

The trial enrolled 496 patients at 33 centers in the United States. Eligible patients were aged 60 years or older or aged 50-59 years with at least one additional stroke risk factor and had an index stroke that was attributed to large-artery or small-vessel disease. Patients were randomly assigned either to continuous monitoring with the Reveal LINQ device (Medtronic) or to the control arm following site-specific standard of care for AFib detection.

Dr. Schwamm noted that usual care for these patients normally involves monitoring for just a few days while in hospital, but this picks up less than 5% of AFib occurrences.

Baseline characteristics of patients in the STROKE AF study showed that the enrolled population was at high risk for stroke, with a CHADSVASC score of 5. But the index strokes were generally small; the median National Institutes of Health Stroke Scale score was 2.

Results at 12 months, reported 2 years ago, showed a 12.5% incidence of AFib with continuous monitoring versus 1.8% with standard of care (hazard ratio, 7.7; P < .001), rates similar to that found in the CRYSTAL-AF study.

By 3 years, the rate of detected AFib had risen to 21.7% in the continuous monitoring arm versus 2.4% in the control arm (HR, 10.0; P < .001).

“At 12 months, we were seven times more likely to detect AF[ib] with continuous monitoring in these patients, and by 3 years, it was 10 times more likely that AF would be detected with continuous monitoring. I think we’ve settled the question of the best way to find AF[ib] in these patients – it is with an inserted device,” Dr. Schwamm said.

“We have also shown that this is not a transient rise in AFib after the stroke which then diminishes over the next few years. It is a continuous and progressive detection of AF[ib].”

Dr. Schwamm pointed out that 88% of the recorded AFib episodes were asymptomatic. “So relying on patients self-reporting symptoms when deciding who to monitor is unreliable and not a sensible strategy.”

The median time to the first adjudicated AFib episode at 12-month follow-up was 99 days; at the 3-year follow-up, it was 284 days.

“This shows that 30 days of monitoring with an external patch is not sufficient to exclude the presence of AF[ib]. And this really argues for a strategy of immediate insertion of cardiac monitor placement if your goal is to look for AF[ib],” Dr. Schwamm commented.
 

Is this clinically relevant AFib?

Dr. Schwamm acknowledged that there is a question of whether device-detected AFib should be thought about in the same way as clinically detected AFib with respect to future stroke risk.

He noted that, in this study, 67.4% of patients for whom AFib was detected by continuous monitoring (31 of 46 patients) had at least one episode of AFib that lasted more than 1 hour.

“This is not a trivial little squiggle of something on an EKG which then goes away. This is of significant duration that the cardiologist who adjudicated these rhythm strips felt confident was AF[ib].”

He added: “AF[ib] lasting more than 1 hour crosses the threshold for most practitioners I know to feel confident in treating the patient with anticoagulation. If it was symptomatic AF, this wouldn’t even be a question.”

Dr. Schwamm made the point that device-detected A AFib F has been accepted as worthy of treatment in patients after cryptogenic stroke.

“If we are honest with ourselves and if we have no hesitation in starting anticoagulation in a patient with cryptogenic stroke who has had device-detected AF 6 months later, should we decide that if the patient has had a lacunar stroke, we can ignore that same device-detected fibrillation?”

He put forward the idea that, at some level, all stroke is cryptogenic. “We never know for sure what the cause was. We have hypotheses, we have associations, but we don’t really know. So how much should we weigh that presumptive etiology in terms of how we interpret a rhythm disturbance of fibrillation?”

When looking for predictors of AFib in this study, the investigators found that patients were more likely to have an episode of AFib detected if they had one of the four following risk factors: congestive heart failure, left atrial enlargement, obesity, or QRS prolongation.

“In patients with any one of those four factors, 30% of those had device-detected AF[ib]. These are same predictors of AF[ib] that we are all accustomed to,” Dr. Schwamm said.
 

Shared decision-making

Dr. Schwamm said in an interview that, in his practice, for these patients, the decision as to whether to use continuous monitoring is made with the patient through shared decision-making.

“We discuss the chance that they could have AF[ib], and I suggest that it might be worth looking for it, but there are factors to be considered. There is a cost to the device, and reimbursement may depend on insurance coverage. Also, some patients may have strong feelings about having the chip implanted in their body.”

He says implanting the chip is easy. “It takes longer to check in at the front desk than to put the device in. It is injected under the skin. It just needs two stitches and a Band-Aid.” The device connects with a smartphone, and the results are interpreted by a cardiologist.

Dr. Schwamm pointed out that the optimal antithrombotic regimen for these patients in whom AFib is detected remains uncertain and should be the focus of future research.

“Do we just stick to antiplatelet therapy or advance to anticoagulation? In moving to an anticoagulant, are we providing less effective prevention for the atherosclerotic stroke risk at the expense of reducing the AF[ib]-related stroke risk? That may be a reasonable trade-off because we know the disability from AF[ib]-associated stroke is much higher.

“Or perhaps the optimal therapy is aspirin plus low-dose anticoagulant? Or left atrial appendage closure and an antiplatelet for patients at a higher risk of bleeding?” he said. “These are the really important questions we need to start asking.”

He added that he hopes a future study will address these questions, but he noted that it would have to be a large study, that it would have to first identify these patients and then randomly assign them to anticoagulation or to no treatment. “That is quite a major undertaking.”

In the highlights presentation, Dr. Jovin said he was uncertain of which of these patients in whom AFib is detected would benefit from anticoagulation. He said he would also like to see a randomized trial on this. But he added: “This would be challenging, as there is the issue of whether there would be equipoise to allow us to randomize to a placebo.”

Dr. Sansing agreed. “I think it would be a hard sell. I would have to think carefully about randomizing a patient to anticoagulation therapy or no therapy who has been found to have AF[ib].”

Dr. Schwamm noted that the current STROKE-AF study was not designed or powered to detect differences in stroke recurrence rates and that there was no difference in stroke recurrence rates between the two arms. There was also no randomization with regard to treatment; choice of medication was left to the discretion of the treating physician.

But he noted that only for 3 of the 34 patients with recurrent stroke in the continuous-monitor arm was AFib detected prior to the recurrent stroke, and only one of those three was receiving anticoagulation at the time of the recurrent stroke.

“These strokes were occurring in patients who did not have device-detected AF[ib],” Dr. Schwamm said. “This is because the population in this study were loaded with stroke risk factors and are at risk of recurrent stroke, but we don’t have the opportunity in this study to really understand the significance of the recurrent strokes.”

The STROKE AF trial was funded by Medtronic. Dr. Schwamm is a consultant to Medtronic.

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

In the STROKE AF study, among patients who had a stroke presumably caused by atherosclerosis, the rate of atrial fibrillation (AFib) was almost 22% at 3 years, as detected by continuous monitoring.

The 3-year results from the study were presented by Lee H. Schwamm, MD, of Massachusetts General Hospital, Boston, at the International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.

Dr. Schwamm said the high rate of AFib detection in this study suggests that continuous monitoring for AFib should be considered for a larger population of stroke patients, rather than just those with cryptogenic stroke.

“We found a much higher rate of AF[ib] than we expected in this population of patients who have had an atherosclerotic stroke,” Dr. Schwamm said in an interview.

“These AF[ib] occurrences were found by a device, so they are known as ‘device-documented AF[ib].’ The patient is not generally aware of symptoms, but 67% of the AF[ib] episodes lasted for more than 1 hour, showing that this is not trivial AF[ib]. This is meaningful AF[ib],” he said.

Dr. Schwamm said the major question is whether these cases of AFib that are detected with a device warrant treatment with anticoagulation. He noted that, in this study, clinicians decided to provide anticoagulation to 70%-80% of patients in whom AFib was detected.

“If we think it deserves treatment, then we have to look for it. And if we care about finding AF[ib], we have no choice but to monitor continuously,” he said.

“If this data doesn’t convince you that AF[ib] is present in this population, I don’t think any data will. Because it is consistent, it accumulates over time and looks remarkably similar to a set of data that we have all become very comfortable with – the CRYSTAL-AF study in patients with cryptogenic stroke,” he stated.

Dr. Schwamm noted that the STROKE AF trial was not based on the cause of the index stroke; rather, it was asking whether there are risk factors that could contribute to the 25% stroke recurrence rate in this population that are not covered in current guidelines.

“I’m really trying to move away from the anchor that I was trained in, which is to figure out the cause of the last stroke to help decide how to prevent the next stroke, towards more of a probabilistic model – of what is all the information I have at my disposal and how do I act on it to prevent the next stroke? We have to start thinking differently about building models for future stroke risk and determining therapy based on that,” he commented.
 

Changing practice

ISC 2023 program chair Tudor Jovin, MD, Cooper Neurological Institute, Cherry Hill, N.J., and moderator of the session at which the results were presented, discussed the STROKE AF results in a highlights presentation.

“To me as clinician, these results are even more relevant than those at 12 months,” Dr. Jovin said. “The lesson I took is that AF[ib] is even more prevalent than we thought. The burden of AF[ib] is significant in these patients, and it doesn’t seem to be limited to a particular time. These are very thought-provoking results which are going to change clinical practice. I think the threshold for long-term monitoring will be lower.”

Comoderator Lauren Sansing, MD, Yale University, New Haven, Conn., added: “This study shows that the longer we monitor, the more patients with AF[ib] we are likely to pick up. And because in two-thirds of patients with AF[ib], it lasted longer than 1 hour, I do believe this was clinically relevant AF[ib]. The question now is, do we monitor everyone? I think it puts the burden on us to search for AF[ib] in our patients.”

In his presentation, Dr. Schwamm explained that, on the basis of the CRYSTAL-AF study, insertable cardiac monitoring devices are frequently used to identify poststroke AFib in patients with cryptogenic stroke. In the device-monitored arm of that study, AFib was detected in 12.4% of patients over 12 months versus 2.0% in the control arm.

“However, we don’t know how often AF[ib] is detected in other presumed stroke types – largely those due to atherosclerosis,” he said.

He pointed out that, at present, long-term monitoring post stroke for the detection of AFib is not currently recommended for patients with ischemic stroke, owing to presumed small-vessel occlusion or large-artery atherosclerosis.

“In these patients, we are not suspecting AF[ib] because we believe the cause of the stroke was not embolic. But we wanted to investigate what the AF[ib] risk is in these patients, who often have multiple stroke risk factors,” he said.

The trial enrolled 496 patients at 33 centers in the United States. Eligible patients were aged 60 years or older or aged 50-59 years with at least one additional stroke risk factor and had an index stroke that was attributed to large-artery or small-vessel disease. Patients were randomly assigned either to continuous monitoring with the Reveal LINQ device (Medtronic) or to the control arm following site-specific standard of care for AFib detection.

Dr. Schwamm noted that usual care for these patients normally involves monitoring for just a few days while in hospital, but this picks up less than 5% of AFib occurrences.

Baseline characteristics of patients in the STROKE AF study showed that the enrolled population was at high risk for stroke, with a CHADSVASC score of 5. But the index strokes were generally small; the median National Institutes of Health Stroke Scale score was 2.

Results at 12 months, reported 2 years ago, showed a 12.5% incidence of AFib with continuous monitoring versus 1.8% with standard of care (hazard ratio, 7.7; P < .001), rates similar to that found in the CRYSTAL-AF study.

By 3 years, the rate of detected AFib had risen to 21.7% in the continuous monitoring arm versus 2.4% in the control arm (HR, 10.0; P < .001).

“At 12 months, we were seven times more likely to detect AF[ib] with continuous monitoring in these patients, and by 3 years, it was 10 times more likely that AF would be detected with continuous monitoring. I think we’ve settled the question of the best way to find AF[ib] in these patients – it is with an inserted device,” Dr. Schwamm said.

“We have also shown that this is not a transient rise in AFib after the stroke which then diminishes over the next few years. It is a continuous and progressive detection of AF[ib].”

Dr. Schwamm pointed out that 88% of the recorded AFib episodes were asymptomatic. “So relying on patients self-reporting symptoms when deciding who to monitor is unreliable and not a sensible strategy.”

The median time to the first adjudicated AFib episode at 12-month follow-up was 99 days; at the 3-year follow-up, it was 284 days.

“This shows that 30 days of monitoring with an external patch is not sufficient to exclude the presence of AF[ib]. And this really argues for a strategy of immediate insertion of cardiac monitor placement if your goal is to look for AF[ib],” Dr. Schwamm commented.
 

Is this clinically relevant AFib?

Dr. Schwamm acknowledged that there is a question of whether device-detected AFib should be thought about in the same way as clinically detected AFib with respect to future stroke risk.

He noted that, in this study, 67.4% of patients for whom AFib was detected by continuous monitoring (31 of 46 patients) had at least one episode of AFib that lasted more than 1 hour.

“This is not a trivial little squiggle of something on an EKG which then goes away. This is of significant duration that the cardiologist who adjudicated these rhythm strips felt confident was AF[ib].”

He added: “AF[ib] lasting more than 1 hour crosses the threshold for most practitioners I know to feel confident in treating the patient with anticoagulation. If it was symptomatic AF, this wouldn’t even be a question.”

Dr. Schwamm made the point that device-detected A AFib F has been accepted as worthy of treatment in patients after cryptogenic stroke.

“If we are honest with ourselves and if we have no hesitation in starting anticoagulation in a patient with cryptogenic stroke who has had device-detected AF 6 months later, should we decide that if the patient has had a lacunar stroke, we can ignore that same device-detected fibrillation?”

He put forward the idea that, at some level, all stroke is cryptogenic. “We never know for sure what the cause was. We have hypotheses, we have associations, but we don’t really know. So how much should we weigh that presumptive etiology in terms of how we interpret a rhythm disturbance of fibrillation?”

When looking for predictors of AFib in this study, the investigators found that patients were more likely to have an episode of AFib detected if they had one of the four following risk factors: congestive heart failure, left atrial enlargement, obesity, or QRS prolongation.

“In patients with any one of those four factors, 30% of those had device-detected AF[ib]. These are same predictors of AF[ib] that we are all accustomed to,” Dr. Schwamm said.
 

Shared decision-making

Dr. Schwamm said in an interview that, in his practice, for these patients, the decision as to whether to use continuous monitoring is made with the patient through shared decision-making.

“We discuss the chance that they could have AF[ib], and I suggest that it might be worth looking for it, but there are factors to be considered. There is a cost to the device, and reimbursement may depend on insurance coverage. Also, some patients may have strong feelings about having the chip implanted in their body.”

He says implanting the chip is easy. “It takes longer to check in at the front desk than to put the device in. It is injected under the skin. It just needs two stitches and a Band-Aid.” The device connects with a smartphone, and the results are interpreted by a cardiologist.

Dr. Schwamm pointed out that the optimal antithrombotic regimen for these patients in whom AFib is detected remains uncertain and should be the focus of future research.

“Do we just stick to antiplatelet therapy or advance to anticoagulation? In moving to an anticoagulant, are we providing less effective prevention for the atherosclerotic stroke risk at the expense of reducing the AF[ib]-related stroke risk? That may be a reasonable trade-off because we know the disability from AF[ib]-associated stroke is much higher.

“Or perhaps the optimal therapy is aspirin plus low-dose anticoagulant? Or left atrial appendage closure and an antiplatelet for patients at a higher risk of bleeding?” he said. “These are the really important questions we need to start asking.”

He added that he hopes a future study will address these questions, but he noted that it would have to be a large study, that it would have to first identify these patients and then randomly assign them to anticoagulation or to no treatment. “That is quite a major undertaking.”

In the highlights presentation, Dr. Jovin said he was uncertain of which of these patients in whom AFib is detected would benefit from anticoagulation. He said he would also like to see a randomized trial on this. But he added: “This would be challenging, as there is the issue of whether there would be equipoise to allow us to randomize to a placebo.”

Dr. Sansing agreed. “I think it would be a hard sell. I would have to think carefully about randomizing a patient to anticoagulation therapy or no therapy who has been found to have AF[ib].”

Dr. Schwamm noted that the current STROKE-AF study was not designed or powered to detect differences in stroke recurrence rates and that there was no difference in stroke recurrence rates between the two arms. There was also no randomization with regard to treatment; choice of medication was left to the discretion of the treating physician.

But he noted that only for 3 of the 34 patients with recurrent stroke in the continuous-monitor arm was AFib detected prior to the recurrent stroke, and only one of those three was receiving anticoagulation at the time of the recurrent stroke.

“These strokes were occurring in patients who did not have device-detected AF[ib],” Dr. Schwamm said. “This is because the population in this study were loaded with stroke risk factors and are at risk of recurrent stroke, but we don’t have the opportunity in this study to really understand the significance of the recurrent strokes.”

The STROKE AF trial was funded by Medtronic. Dr. Schwamm is a consultant to Medtronic.

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

In the STROKE AF study, among patients who had a stroke presumably caused by atherosclerosis, the rate of atrial fibrillation (AFib) was almost 22% at 3 years, as detected by continuous monitoring.

The 3-year results from the study were presented by Lee H. Schwamm, MD, of Massachusetts General Hospital, Boston, at the International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.

Dr. Schwamm said the high rate of AFib detection in this study suggests that continuous monitoring for AFib should be considered for a larger population of stroke patients, rather than just those with cryptogenic stroke.

“We found a much higher rate of AF[ib] than we expected in this population of patients who have had an atherosclerotic stroke,” Dr. Schwamm said in an interview.

“These AF[ib] occurrences were found by a device, so they are known as ‘device-documented AF[ib].’ The patient is not generally aware of symptoms, but 67% of the AF[ib] episodes lasted for more than 1 hour, showing that this is not trivial AF[ib]. This is meaningful AF[ib],” he said.

Dr. Schwamm said the major question is whether these cases of AFib that are detected with a device warrant treatment with anticoagulation. He noted that, in this study, clinicians decided to provide anticoagulation to 70%-80% of patients in whom AFib was detected.

“If we think it deserves treatment, then we have to look for it. And if we care about finding AF[ib], we have no choice but to monitor continuously,” he said.

“If this data doesn’t convince you that AF[ib] is present in this population, I don’t think any data will. Because it is consistent, it accumulates over time and looks remarkably similar to a set of data that we have all become very comfortable with – the CRYSTAL-AF study in patients with cryptogenic stroke,” he stated.

Dr. Schwamm noted that the STROKE AF trial was not based on the cause of the index stroke; rather, it was asking whether there are risk factors that could contribute to the 25% stroke recurrence rate in this population that are not covered in current guidelines.

“I’m really trying to move away from the anchor that I was trained in, which is to figure out the cause of the last stroke to help decide how to prevent the next stroke, towards more of a probabilistic model – of what is all the information I have at my disposal and how do I act on it to prevent the next stroke? We have to start thinking differently about building models for future stroke risk and determining therapy based on that,” he commented.
 

Changing practice

ISC 2023 program chair Tudor Jovin, MD, Cooper Neurological Institute, Cherry Hill, N.J., and moderator of the session at which the results were presented, discussed the STROKE AF results in a highlights presentation.

“To me as clinician, these results are even more relevant than those at 12 months,” Dr. Jovin said. “The lesson I took is that AF[ib] is even more prevalent than we thought. The burden of AF[ib] is significant in these patients, and it doesn’t seem to be limited to a particular time. These are very thought-provoking results which are going to change clinical practice. I think the threshold for long-term monitoring will be lower.”

Comoderator Lauren Sansing, MD, Yale University, New Haven, Conn., added: “This study shows that the longer we monitor, the more patients with AF[ib] we are likely to pick up. And because in two-thirds of patients with AF[ib], it lasted longer than 1 hour, I do believe this was clinically relevant AF[ib]. The question now is, do we monitor everyone? I think it puts the burden on us to search for AF[ib] in our patients.”

In his presentation, Dr. Schwamm explained that, on the basis of the CRYSTAL-AF study, insertable cardiac monitoring devices are frequently used to identify poststroke AFib in patients with cryptogenic stroke. In the device-monitored arm of that study, AFib was detected in 12.4% of patients over 12 months versus 2.0% in the control arm.

“However, we don’t know how often AF[ib] is detected in other presumed stroke types – largely those due to atherosclerosis,” he said.

He pointed out that, at present, long-term monitoring post stroke for the detection of AFib is not currently recommended for patients with ischemic stroke, owing to presumed small-vessel occlusion or large-artery atherosclerosis.

“In these patients, we are not suspecting AF[ib] because we believe the cause of the stroke was not embolic. But we wanted to investigate what the AF[ib] risk is in these patients, who often have multiple stroke risk factors,” he said.

The trial enrolled 496 patients at 33 centers in the United States. Eligible patients were aged 60 years or older or aged 50-59 years with at least one additional stroke risk factor and had an index stroke that was attributed to large-artery or small-vessel disease. Patients were randomly assigned either to continuous monitoring with the Reveal LINQ device (Medtronic) or to the control arm following site-specific standard of care for AFib detection.

Dr. Schwamm noted that usual care for these patients normally involves monitoring for just a few days while in hospital, but this picks up less than 5% of AFib occurrences.

Baseline characteristics of patients in the STROKE AF study showed that the enrolled population was at high risk for stroke, with a CHADSVASC score of 5. But the index strokes were generally small; the median National Institutes of Health Stroke Scale score was 2.

Results at 12 months, reported 2 years ago, showed a 12.5% incidence of AFib with continuous monitoring versus 1.8% with standard of care (hazard ratio, 7.7; P < .001), rates similar to that found in the CRYSTAL-AF study.

By 3 years, the rate of detected AFib had risen to 21.7% in the continuous monitoring arm versus 2.4% in the control arm (HR, 10.0; P < .001).

“At 12 months, we were seven times more likely to detect AF[ib] with continuous monitoring in these patients, and by 3 years, it was 10 times more likely that AF would be detected with continuous monitoring. I think we’ve settled the question of the best way to find AF[ib] in these patients – it is with an inserted device,” Dr. Schwamm said.

“We have also shown that this is not a transient rise in AFib after the stroke which then diminishes over the next few years. It is a continuous and progressive detection of AF[ib].”

Dr. Schwamm pointed out that 88% of the recorded AFib episodes were asymptomatic. “So relying on patients self-reporting symptoms when deciding who to monitor is unreliable and not a sensible strategy.”

The median time to the first adjudicated AFib episode at 12-month follow-up was 99 days; at the 3-year follow-up, it was 284 days.

“This shows that 30 days of monitoring with an external patch is not sufficient to exclude the presence of AF[ib]. And this really argues for a strategy of immediate insertion of cardiac monitor placement if your goal is to look for AF[ib],” Dr. Schwamm commented.
 

Is this clinically relevant AFib?

Dr. Schwamm acknowledged that there is a question of whether device-detected AFib should be thought about in the same way as clinically detected AFib with respect to future stroke risk.

He noted that, in this study, 67.4% of patients for whom AFib was detected by continuous monitoring (31 of 46 patients) had at least one episode of AFib that lasted more than 1 hour.

“This is not a trivial little squiggle of something on an EKG which then goes away. This is of significant duration that the cardiologist who adjudicated these rhythm strips felt confident was AF[ib].”

He added: “AF[ib] lasting more than 1 hour crosses the threshold for most practitioners I know to feel confident in treating the patient with anticoagulation. If it was symptomatic AF, this wouldn’t even be a question.”

Dr. Schwamm made the point that device-detected A AFib F has been accepted as worthy of treatment in patients after cryptogenic stroke.

“If we are honest with ourselves and if we have no hesitation in starting anticoagulation in a patient with cryptogenic stroke who has had device-detected AF 6 months later, should we decide that if the patient has had a lacunar stroke, we can ignore that same device-detected fibrillation?”

He put forward the idea that, at some level, all stroke is cryptogenic. “We never know for sure what the cause was. We have hypotheses, we have associations, but we don’t really know. So how much should we weigh that presumptive etiology in terms of how we interpret a rhythm disturbance of fibrillation?”

When looking for predictors of AFib in this study, the investigators found that patients were more likely to have an episode of AFib detected if they had one of the four following risk factors: congestive heart failure, left atrial enlargement, obesity, or QRS prolongation.

“In patients with any one of those four factors, 30% of those had device-detected AF[ib]. These are same predictors of AF[ib] that we are all accustomed to,” Dr. Schwamm said.
 

Shared decision-making

Dr. Schwamm said in an interview that, in his practice, for these patients, the decision as to whether to use continuous monitoring is made with the patient through shared decision-making.

“We discuss the chance that they could have AF[ib], and I suggest that it might be worth looking for it, but there are factors to be considered. There is a cost to the device, and reimbursement may depend on insurance coverage. Also, some patients may have strong feelings about having the chip implanted in their body.”

He says implanting the chip is easy. “It takes longer to check in at the front desk than to put the device in. It is injected under the skin. It just needs two stitches and a Band-Aid.” The device connects with a smartphone, and the results are interpreted by a cardiologist.

Dr. Schwamm pointed out that the optimal antithrombotic regimen for these patients in whom AFib is detected remains uncertain and should be the focus of future research.

“Do we just stick to antiplatelet therapy or advance to anticoagulation? In moving to an anticoagulant, are we providing less effective prevention for the atherosclerotic stroke risk at the expense of reducing the AF[ib]-related stroke risk? That may be a reasonable trade-off because we know the disability from AF[ib]-associated stroke is much higher.

“Or perhaps the optimal therapy is aspirin plus low-dose anticoagulant? Or left atrial appendage closure and an antiplatelet for patients at a higher risk of bleeding?” he said. “These are the really important questions we need to start asking.”

He added that he hopes a future study will address these questions, but he noted that it would have to be a large study, that it would have to first identify these patients and then randomly assign them to anticoagulation or to no treatment. “That is quite a major undertaking.”

In the highlights presentation, Dr. Jovin said he was uncertain of which of these patients in whom AFib is detected would benefit from anticoagulation. He said he would also like to see a randomized trial on this. But he added: “This would be challenging, as there is the issue of whether there would be equipoise to allow us to randomize to a placebo.”

Dr. Sansing agreed. “I think it would be a hard sell. I would have to think carefully about randomizing a patient to anticoagulation therapy or no therapy who has been found to have AF[ib].”

Dr. Schwamm noted that the current STROKE-AF study was not designed or powered to detect differences in stroke recurrence rates and that there was no difference in stroke recurrence rates between the two arms. There was also no randomization with regard to treatment; choice of medication was left to the discretion of the treating physician.

But he noted that only for 3 of the 34 patients with recurrent stroke in the continuous-monitor arm was AFib detected prior to the recurrent stroke, and only one of those three was receiving anticoagulation at the time of the recurrent stroke.

“These strokes were occurring in patients who did not have device-detected AF[ib],” Dr. Schwamm said. “This is because the population in this study were loaded with stroke risk factors and are at risk of recurrent stroke, but we don’t have the opportunity in this study to really understand the significance of the recurrent strokes.”

The STROKE AF trial was funded by Medtronic. Dr. Schwamm is a consultant to Medtronic.

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

A novel anti-inflammatory agent given to stroke patients receiving endovascular therapy significantly cut the mortality rate, reduced infarct size, and improved disability, preliminary results of a first-in-human study show.

The findings illustrate that it is possible to improve outcomes for stroke patients “not only with reperfusion therapy but with neuroprotectants,” study author Macarena Hernandez, PhD, associate professor, University Complutense, Madrid, told this news organization.

Dr. Hernandez said she hopes these positive results will spur investigation into other neuroprotective agents.

The findings were presented at the International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.
 

Best doses

The study investigated ApTOLL, which blocks the TOLL-like receptor 4 (TLR4) that induces inflammation after a stroke. Previous studies found that ApTOLL protected brain tissue in animal models of stroke.

The phase 1B part of the study found no safety issues and determined the best two doses to be used in phase 2A were 0.05 mg/kg and 0.2 mg/kg.

The analysis included 139 patients at 14 centers in Spain and France (mean age, about 70 years; 42% women) who had a large-vessel occlusion and were eligible for endovascular therapy.

“Our aim was to have a very homogeneous population” to try to replicate in humans what had worked in animals, another study author, Marc Ribó, MD, interventional neurologist, Hospital Vall d’Hebron, Barcelona, told this news organization.

Study participants had an Alberta Stroke Program Early CT Score (ASPECTS) of 5-10, and estimated infarct core volume on CT-perfusion was 5-70 mL. All were treated within 6 hours of stroke onset.

Researchers randomly assigned patients to receive the low dose of the drug, the high dose of the drug, or placebo. The drug was administered intravenously over a 30-minute period just prior to the groin puncture for the thrombectomy procedure.

“So, the drug had already started to work when they underwent the usual standard practice, the thrombectomy,” said Dr. Ribó.

Those who were eligible also received tissue plasminogen activator.

The primary endpoint was safety, including death, symptomatic intracranial hemorrhage (SICH), and recurrent stroke.
 

Lower mortality

At 90 days, there was a statistically significant lower mortality rate in the high-dose group, compared with the group that received placebo (4.76% vs. 18.18%).

The mortality rate was 26.19% in the low-dose group, but Dr. Ribó stressed that this dose was a quarter of the higher dose and so performed “much more like placebo.”

The higher dose also yielded a better SICH outcome (4.76% of patients vs. 7.27% for placebo and 7.14% for the lower dose). And it was superior in terms of brain edema (2.4% of the population vs. 7.3% for the placebo and 4.8% for the low-dose groups).

About 7.1% of the high-dose group, 3.7% of the placebo group, and 4.8% of the low-dose group had a recurrent transient ischemic attack or stroke.

A secondary efficacy endpoint was infarct volume on MRI at 72 hours. Here, for the higher-dose group, mean infarct volume was reduced, compared with the patients who received placebo (–29.31 cc; 90% confidence interval, –49.28 to –9.34).

This higher dose was also superior for the secondary outcome of National Institutes of Health Stroke Scale score at 72 hours and for the disability outcome on the modified Rankin Score (mRS).
 

Clear shift in disability

“There was a clear shift toward less disability across levels of the mRS score in the high-dose group at 90 days,” said Dr. Ribó.

He added that he and his colleagues are “very happy” with these results, as they reflect “a consistency” of outcomes.

“We observed that the infarct volumes were lower in the high-dose group, and that led to a significant lower NIH score, meaning less clinical neurological symptoms at 72 hours, and finally, this led to less disability at 90 days.”

These results are “very exciting,” Dr. Hernandez added. “This is the first neuroprotectant that has demonstrated this acute effect in reducing deaths, in reducing the infarct volume and improving functionality long-term in patients treated with the higher dose.”

Dr. Ribó noted the treatment would eventually be used in addition to reperfusion therapy. “It’s not competing with reperfusion treatment; it’s an additional layer” of treatment.

Although it would initially be offered only to patients eligible for thrombectomy, researchers will explore the drug’s effectiveness for other stroke patients, said Dr. Ribó. “We wanted to secure this indication, and from there, progressively expand to other profiles of stroke patients, and even to patients with intracranial hemorrhage.”

The study confirmed the safety of the drug. “There were no safety issues at all,” said Dr. Ribó. “We were initially concerned that an anti-inflammatory in these patients could lead to higher rates of infections, but this was absolutely not the case.”

The next step is to confirm the effects in a larger, multicenter study, which is planned to launch at the end of this year, said Dr. Hernandez.
 

‘Very robust results’

In a comment, Philip B. Gorelick, MD, professor of neurology, Northwestern University, Chicago, said that, while this was a small early-phase study, the results are “very robust.”

“The authors demonstrated proof of a neuroprotective effect; they showed at 90 days that the death rates were substantially reduced by about four times – 4% vs. 18% – and the size of the damaged tissue at about 72 hours was reduced by 40%,” said Dr. Gorelick, who did not participate in the study.

He also noted that the disability was “less pronounced” at 90 days in the 0.2 mg/kg group.

“So overall, these are very encouraging results,” said Dr. Gorelick. “We have had a lot of difficulty finding neuroprotectant drugs that work, and this drug, in combination with endovascular therapy, seems to be very promising.”

However, he stressed the drug “is not ready for prime-time practice.”

“The proof in the pudding will be in the large-scale main phase 3 trials,” he added.

The study was funded by aptaTargets. Dr. Hernandez is chief scientific officer at aptaTargets. Dr. Ribó is an adviser at AptaTargets; a consultant at Medtronic; has ownership interest in Anaconda and NoraHealth; is a consultant for Cerenovus and Philips; and has stock options at Methink. Dr. Gorelick has disclosed no relevant financial relationships.

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

A novel anti-inflammatory agent given to stroke patients receiving endovascular therapy significantly cut the mortality rate, reduced infarct size, and improved disability, preliminary results of a first-in-human study show.

The findings illustrate that it is possible to improve outcomes for stroke patients “not only with reperfusion therapy but with neuroprotectants,” study author Macarena Hernandez, PhD, associate professor, University Complutense, Madrid, told this news organization.

Dr. Hernandez said she hopes these positive results will spur investigation into other neuroprotective agents.

The findings were presented at the International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.
 

Best doses

The study investigated ApTOLL, which blocks the TOLL-like receptor 4 (TLR4) that induces inflammation after a stroke. Previous studies found that ApTOLL protected brain tissue in animal models of stroke.

The phase 1B part of the study found no safety issues and determined the best two doses to be used in phase 2A were 0.05 mg/kg and 0.2 mg/kg.

The analysis included 139 patients at 14 centers in Spain and France (mean age, about 70 years; 42% women) who had a large-vessel occlusion and were eligible for endovascular therapy.

“Our aim was to have a very homogeneous population” to try to replicate in humans what had worked in animals, another study author, Marc Ribó, MD, interventional neurologist, Hospital Vall d’Hebron, Barcelona, told this news organization.

Study participants had an Alberta Stroke Program Early CT Score (ASPECTS) of 5-10, and estimated infarct core volume on CT-perfusion was 5-70 mL. All were treated within 6 hours of stroke onset.

Researchers randomly assigned patients to receive the low dose of the drug, the high dose of the drug, or placebo. The drug was administered intravenously over a 30-minute period just prior to the groin puncture for the thrombectomy procedure.

“So, the drug had already started to work when they underwent the usual standard practice, the thrombectomy,” said Dr. Ribó.

Those who were eligible also received tissue plasminogen activator.

The primary endpoint was safety, including death, symptomatic intracranial hemorrhage (SICH), and recurrent stroke.
 

Lower mortality

At 90 days, there was a statistically significant lower mortality rate in the high-dose group, compared with the group that received placebo (4.76% vs. 18.18%).

The mortality rate was 26.19% in the low-dose group, but Dr. Ribó stressed that this dose was a quarter of the higher dose and so performed “much more like placebo.”

The higher dose also yielded a better SICH outcome (4.76% of patients vs. 7.27% for placebo and 7.14% for the lower dose). And it was superior in terms of brain edema (2.4% of the population vs. 7.3% for the placebo and 4.8% for the low-dose groups).

About 7.1% of the high-dose group, 3.7% of the placebo group, and 4.8% of the low-dose group had a recurrent transient ischemic attack or stroke.

A secondary efficacy endpoint was infarct volume on MRI at 72 hours. Here, for the higher-dose group, mean infarct volume was reduced, compared with the patients who received placebo (–29.31 cc; 90% confidence interval, –49.28 to –9.34).

This higher dose was also superior for the secondary outcome of National Institutes of Health Stroke Scale score at 72 hours and for the disability outcome on the modified Rankin Score (mRS).
 

Clear shift in disability

“There was a clear shift toward less disability across levels of the mRS score in the high-dose group at 90 days,” said Dr. Ribó.

He added that he and his colleagues are “very happy” with these results, as they reflect “a consistency” of outcomes.

“We observed that the infarct volumes were lower in the high-dose group, and that led to a significant lower NIH score, meaning less clinical neurological symptoms at 72 hours, and finally, this led to less disability at 90 days.”

These results are “very exciting,” Dr. Hernandez added. “This is the first neuroprotectant that has demonstrated this acute effect in reducing deaths, in reducing the infarct volume and improving functionality long-term in patients treated with the higher dose.”

Dr. Ribó noted the treatment would eventually be used in addition to reperfusion therapy. “It’s not competing with reperfusion treatment; it’s an additional layer” of treatment.

Although it would initially be offered only to patients eligible for thrombectomy, researchers will explore the drug’s effectiveness for other stroke patients, said Dr. Ribó. “We wanted to secure this indication, and from there, progressively expand to other profiles of stroke patients, and even to patients with intracranial hemorrhage.”

The study confirmed the safety of the drug. “There were no safety issues at all,” said Dr. Ribó. “We were initially concerned that an anti-inflammatory in these patients could lead to higher rates of infections, but this was absolutely not the case.”

The next step is to confirm the effects in a larger, multicenter study, which is planned to launch at the end of this year, said Dr. Hernandez.
 

‘Very robust results’

In a comment, Philip B. Gorelick, MD, professor of neurology, Northwestern University, Chicago, said that, while this was a small early-phase study, the results are “very robust.”

“The authors demonstrated proof of a neuroprotective effect; they showed at 90 days that the death rates were substantially reduced by about four times – 4% vs. 18% – and the size of the damaged tissue at about 72 hours was reduced by 40%,” said Dr. Gorelick, who did not participate in the study.

He also noted that the disability was “less pronounced” at 90 days in the 0.2 mg/kg group.

“So overall, these are very encouraging results,” said Dr. Gorelick. “We have had a lot of difficulty finding neuroprotectant drugs that work, and this drug, in combination with endovascular therapy, seems to be very promising.”

However, he stressed the drug “is not ready for prime-time practice.”

“The proof in the pudding will be in the large-scale main phase 3 trials,” he added.

The study was funded by aptaTargets. Dr. Hernandez is chief scientific officer at aptaTargets. Dr. Ribó is an adviser at AptaTargets; a consultant at Medtronic; has ownership interest in Anaconda and NoraHealth; is a consultant for Cerenovus and Philips; and has stock options at Methink. Dr. Gorelick has disclosed no relevant financial relationships.

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

A novel anti-inflammatory agent given to stroke patients receiving endovascular therapy significantly cut the mortality rate, reduced infarct size, and improved disability, preliminary results of a first-in-human study show.

The findings illustrate that it is possible to improve outcomes for stroke patients “not only with reperfusion therapy but with neuroprotectants,” study author Macarena Hernandez, PhD, associate professor, University Complutense, Madrid, told this news organization.

Dr. Hernandez said she hopes these positive results will spur investigation into other neuroprotective agents.

The findings were presented at the International Stroke Conference presented by the American Stroke Association, a division of the American Heart Association.
 

Best doses

The study investigated ApTOLL, which blocks the TOLL-like receptor 4 (TLR4) that induces inflammation after a stroke. Previous studies found that ApTOLL protected brain tissue in animal models of stroke.

The phase 1B part of the study found no safety issues and determined the best two doses to be used in phase 2A were 0.05 mg/kg and 0.2 mg/kg.

The analysis included 139 patients at 14 centers in Spain and France (mean age, about 70 years; 42% women) who had a large-vessel occlusion and were eligible for endovascular therapy.

“Our aim was to have a very homogeneous population” to try to replicate in humans what had worked in animals, another study author, Marc Ribó, MD, interventional neurologist, Hospital Vall d’Hebron, Barcelona, told this news organization.

Study participants had an Alberta Stroke Program Early CT Score (ASPECTS) of 5-10, and estimated infarct core volume on CT-perfusion was 5-70 mL. All were treated within 6 hours of stroke onset.

Researchers randomly assigned patients to receive the low dose of the drug, the high dose of the drug, or placebo. The drug was administered intravenously over a 30-minute period just prior to the groin puncture for the thrombectomy procedure.

“So, the drug had already started to work when they underwent the usual standard practice, the thrombectomy,” said Dr. Ribó.

Those who were eligible also received tissue plasminogen activator.

The primary endpoint was safety, including death, symptomatic intracranial hemorrhage (SICH), and recurrent stroke.
 

Lower mortality

At 90 days, there was a statistically significant lower mortality rate in the high-dose group, compared with the group that received placebo (4.76% vs. 18.18%).

The mortality rate was 26.19% in the low-dose group, but Dr. Ribó stressed that this dose was a quarter of the higher dose and so performed “much more like placebo.”

The higher dose also yielded a better SICH outcome (4.76% of patients vs. 7.27% for placebo and 7.14% for the lower dose). And it was superior in terms of brain edema (2.4% of the population vs. 7.3% for the placebo and 4.8% for the low-dose groups).

About 7.1% of the high-dose group, 3.7% of the placebo group, and 4.8% of the low-dose group had a recurrent transient ischemic attack or stroke.

A secondary efficacy endpoint was infarct volume on MRI at 72 hours. Here, for the higher-dose group, mean infarct volume was reduced, compared with the patients who received placebo (–29.31 cc; 90% confidence interval, –49.28 to –9.34).

This higher dose was also superior for the secondary outcome of National Institutes of Health Stroke Scale score at 72 hours and for the disability outcome on the modified Rankin Score (mRS).
 

Clear shift in disability

“There was a clear shift toward less disability across levels of the mRS score in the high-dose group at 90 days,” said Dr. Ribó.

He added that he and his colleagues are “very happy” with these results, as they reflect “a consistency” of outcomes.

“We observed that the infarct volumes were lower in the high-dose group, and that led to a significant lower NIH score, meaning less clinical neurological symptoms at 72 hours, and finally, this led to less disability at 90 days.”

These results are “very exciting,” Dr. Hernandez added. “This is the first neuroprotectant that has demonstrated this acute effect in reducing deaths, in reducing the infarct volume and improving functionality long-term in patients treated with the higher dose.”

Dr. Ribó noted the treatment would eventually be used in addition to reperfusion therapy. “It’s not competing with reperfusion treatment; it’s an additional layer” of treatment.

Although it would initially be offered only to patients eligible for thrombectomy, researchers will explore the drug’s effectiveness for other stroke patients, said Dr. Ribó. “We wanted to secure this indication, and from there, progressively expand to other profiles of stroke patients, and even to patients with intracranial hemorrhage.”

The study confirmed the safety of the drug. “There were no safety issues at all,” said Dr. Ribó. “We were initially concerned that an anti-inflammatory in these patients could lead to higher rates of infections, but this was absolutely not the case.”

The next step is to confirm the effects in a larger, multicenter study, which is planned to launch at the end of this year, said Dr. Hernandez.
 

‘Very robust results’

In a comment, Philip B. Gorelick, MD, professor of neurology, Northwestern University, Chicago, said that, while this was a small early-phase study, the results are “very robust.”

“The authors demonstrated proof of a neuroprotective effect; they showed at 90 days that the death rates were substantially reduced by about four times – 4% vs. 18% – and the size of the damaged tissue at about 72 hours was reduced by 40%,” said Dr. Gorelick, who did not participate in the study.

He also noted that the disability was “less pronounced” at 90 days in the 0.2 mg/kg group.

“So overall, these are very encouraging results,” said Dr. Gorelick. “We have had a lot of difficulty finding neuroprotectant drugs that work, and this drug, in combination with endovascular therapy, seems to be very promising.”

However, he stressed the drug “is not ready for prime-time practice.”

“The proof in the pudding will be in the large-scale main phase 3 trials,” he added.

The study was funded by aptaTargets. Dr. Hernandez is chief scientific officer at aptaTargets. Dr. Ribó is an adviser at AptaTargets; a consultant at Medtronic; has ownership interest in Anaconda and NoraHealth; is a consultant for Cerenovus and Philips; and has stock options at Methink. Dr. Gorelick has disclosed no relevant financial relationships.

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