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Nerve damage linked to prone positioning in COVID-19
A new case series describes peripheral nerve injuries associated with this type of positioning and suggests ways to minimize the potential damage.
“Physicians should remain aware of increased susceptibility to peripheral nerve damage in patients with severe COVID-19 after prone positioning, since it is surprisingly common among these patients, and should refine standard protocols accordingly to reduce that risk,” said senior author Colin Franz, MD, PhD, director of the Electrodiagnostic Laboratory, Shirley Ryan AbilityLab, Chicago.
The article was published online Sept. 4 in the British Journal of Anaesthesiology.
Unique type of nerve injury
Many patients who are admitted to the intensive care unit with COVID-19 undergo invasive mechanical ventilation because of acute respiratory distress syndrome (ARDS). Clinical guidelines recommend that such patients lie in the prone position 12-16 hours per day.
“Prone positioning for up to 16 hours is a therapy we use for patients with more severe forms of ARDS, and high-level evidence points to mortality benefit in patients with moderate to severe ARDS if [mechanical] ventilation occurs,” said study coauthor James McCauley Walter, MD, of the pulmonary division at Northwestern University, Chicago.
With a “significant number of COVID-19 patients flooding the ICU, we quickly started to prone a lot of them, but if you are in a specific position for multiple hours a day, coupled with the neurotoxic effects of the SARS-CoV-2 virus itself, you may be exposed to a unique type of nerve injury,” he said.
Dr. Walter said that the “incidence of asymmetric neuropathies seems out of proportion to what has been reported in non–COVID-19 settings, which is what caught our attention.”
Many of these patients are discharged to rehabilitation hospitals, and “what we noticed, which was unique about COVID-19 patients coming to our rehab hospital, was that, compared with other patients who had been critically ill with a long hospital stay, there was a significantly higher percentage of COVID-19 patients who had peripheral nerve damage,” Dr. Franz said.
The authors described 12 of these patients who were admitted between April 24 and June 30, 2020 (mean age, 60.3 years; range, 23-80 years). The sample included White, Black, and Hispanic individuals. Eleven of the 12 post–COVID-19 patients with peripheral nerve damage had experienced prone positioning during acute management.
The average number of days patients received mechanical ventilation was 33.6 (range, 12-62 days). The average number of proning sessions was 4.5 (range, 1-16) with an average of 81.2 hours (range, 16-252 hours) spent prone.
A major contributor
Dr. Franz suggested that prone positioning is likely not the only cause of peripheral nerve damage but “may play a big role in these patients who are vulnerable because of viral infection and the critical illness that causes damage and nerve injuries.”
“The first component of lifesaving care for the critically ill in the ICU is intravenous fluids, mechanical ventilation, steroids, and antibiotics for infection,” said Dr. Walter.
“We are trying to come up with ways to place patients in prone position in safer ways, to pay attention to pressure points and areas of injury that we have seen and try to offload them, to see if we can decrease the rate of these injuries,” he added.
The researchers’ article includes a heat map diagram as a “template for where to focus the most efforts, in terms of decreasing pressure,” Dr. Walter said.
“The nerves are accepting too much force for gravely ill COVID-19 patients to handle, so we suggest using the template to determine where extra padding might be needed, or a protocol that might include changes in positioning,” he added.
Dr. Franz described the interventions used for COVID-19 patients with prone positioning–related peripheral nerve damage. “The first step is trying to address the problems one by one, either trying to solve them through exercise or teaching new skills, new ways to compensate, beginning with basic activities, such as getting out of bed and self-care,” he said.
Long-term recovery of nerve injuries depends on how severe the injuries are. Some nerves can slowly regenerate – possibly at the rate of 1 inch per month – which can be a long process, taking between a year and 18 months.
Dr. Franz said that therapies for this condition are “extrapolated from clinical trial work” on promoting nerve regeneration after surgery using electrical stimulation to enable nerves to regrow at a faster rate.
“Regeneration is not only slow, but it may not happen completely, leaving the patient with permanent nerve damage – in fact, based on our experience and what has been reported, the percentage of patients with full recovery is only 10%,” he said.
The most common symptomatic complaint other than lack of movement or feeling is neuropathic pain, “which may require medication to take the edge off the pain,” Dr. Franz added.
Irreversible damage?
Commenting on the study, Tae Chung, MD, of the departments of physical medicine, rehabilitation, and neurology, Johns Hopkins University, Baltimore, said the study “provides one of the first and the largest description of peripheral nerve injury associated with prone positioning for management of ARDS from COVID-19.”
Dr. Chung, who was not involved in the research, noted that “various neurological complications from COVID-19 have been reported, and some of them may result in irreversible neurological damage or delay the recovery from COVID-19 infection,” so “accurate and timely diagnosis of such neurological complications is critical for rehabilitation of the COVID-19 survivors.”
The study received no funding. Dr. Franz, Dr. Walter, study coauthors, and Dr. Chung report no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
A new case series describes peripheral nerve injuries associated with this type of positioning and suggests ways to minimize the potential damage.
“Physicians should remain aware of increased susceptibility to peripheral nerve damage in patients with severe COVID-19 after prone positioning, since it is surprisingly common among these patients, and should refine standard protocols accordingly to reduce that risk,” said senior author Colin Franz, MD, PhD, director of the Electrodiagnostic Laboratory, Shirley Ryan AbilityLab, Chicago.
The article was published online Sept. 4 in the British Journal of Anaesthesiology.
Unique type of nerve injury
Many patients who are admitted to the intensive care unit with COVID-19 undergo invasive mechanical ventilation because of acute respiratory distress syndrome (ARDS). Clinical guidelines recommend that such patients lie in the prone position 12-16 hours per day.
“Prone positioning for up to 16 hours is a therapy we use for patients with more severe forms of ARDS, and high-level evidence points to mortality benefit in patients with moderate to severe ARDS if [mechanical] ventilation occurs,” said study coauthor James McCauley Walter, MD, of the pulmonary division at Northwestern University, Chicago.
With a “significant number of COVID-19 patients flooding the ICU, we quickly started to prone a lot of them, but if you are in a specific position for multiple hours a day, coupled with the neurotoxic effects of the SARS-CoV-2 virus itself, you may be exposed to a unique type of nerve injury,” he said.
Dr. Walter said that the “incidence of asymmetric neuropathies seems out of proportion to what has been reported in non–COVID-19 settings, which is what caught our attention.”
Many of these patients are discharged to rehabilitation hospitals, and “what we noticed, which was unique about COVID-19 patients coming to our rehab hospital, was that, compared with other patients who had been critically ill with a long hospital stay, there was a significantly higher percentage of COVID-19 patients who had peripheral nerve damage,” Dr. Franz said.
The authors described 12 of these patients who were admitted between April 24 and June 30, 2020 (mean age, 60.3 years; range, 23-80 years). The sample included White, Black, and Hispanic individuals. Eleven of the 12 post–COVID-19 patients with peripheral nerve damage had experienced prone positioning during acute management.
The average number of days patients received mechanical ventilation was 33.6 (range, 12-62 days). The average number of proning sessions was 4.5 (range, 1-16) with an average of 81.2 hours (range, 16-252 hours) spent prone.
A major contributor
Dr. Franz suggested that prone positioning is likely not the only cause of peripheral nerve damage but “may play a big role in these patients who are vulnerable because of viral infection and the critical illness that causes damage and nerve injuries.”
“The first component of lifesaving care for the critically ill in the ICU is intravenous fluids, mechanical ventilation, steroids, and antibiotics for infection,” said Dr. Walter.
“We are trying to come up with ways to place patients in prone position in safer ways, to pay attention to pressure points and areas of injury that we have seen and try to offload them, to see if we can decrease the rate of these injuries,” he added.
The researchers’ article includes a heat map diagram as a “template for where to focus the most efforts, in terms of decreasing pressure,” Dr. Walter said.
“The nerves are accepting too much force for gravely ill COVID-19 patients to handle, so we suggest using the template to determine where extra padding might be needed, or a protocol that might include changes in positioning,” he added.
Dr. Franz described the interventions used for COVID-19 patients with prone positioning–related peripheral nerve damage. “The first step is trying to address the problems one by one, either trying to solve them through exercise or teaching new skills, new ways to compensate, beginning with basic activities, such as getting out of bed and self-care,” he said.
Long-term recovery of nerve injuries depends on how severe the injuries are. Some nerves can slowly regenerate – possibly at the rate of 1 inch per month – which can be a long process, taking between a year and 18 months.
Dr. Franz said that therapies for this condition are “extrapolated from clinical trial work” on promoting nerve regeneration after surgery using electrical stimulation to enable nerves to regrow at a faster rate.
“Regeneration is not only slow, but it may not happen completely, leaving the patient with permanent nerve damage – in fact, based on our experience and what has been reported, the percentage of patients with full recovery is only 10%,” he said.
The most common symptomatic complaint other than lack of movement or feeling is neuropathic pain, “which may require medication to take the edge off the pain,” Dr. Franz added.
Irreversible damage?
Commenting on the study, Tae Chung, MD, of the departments of physical medicine, rehabilitation, and neurology, Johns Hopkins University, Baltimore, said the study “provides one of the first and the largest description of peripheral nerve injury associated with prone positioning for management of ARDS from COVID-19.”
Dr. Chung, who was not involved in the research, noted that “various neurological complications from COVID-19 have been reported, and some of them may result in irreversible neurological damage or delay the recovery from COVID-19 infection,” so “accurate and timely diagnosis of such neurological complications is critical for rehabilitation of the COVID-19 survivors.”
The study received no funding. Dr. Franz, Dr. Walter, study coauthors, and Dr. Chung report no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
A new case series describes peripheral nerve injuries associated with this type of positioning and suggests ways to minimize the potential damage.
“Physicians should remain aware of increased susceptibility to peripheral nerve damage in patients with severe COVID-19 after prone positioning, since it is surprisingly common among these patients, and should refine standard protocols accordingly to reduce that risk,” said senior author Colin Franz, MD, PhD, director of the Electrodiagnostic Laboratory, Shirley Ryan AbilityLab, Chicago.
The article was published online Sept. 4 in the British Journal of Anaesthesiology.
Unique type of nerve injury
Many patients who are admitted to the intensive care unit with COVID-19 undergo invasive mechanical ventilation because of acute respiratory distress syndrome (ARDS). Clinical guidelines recommend that such patients lie in the prone position 12-16 hours per day.
“Prone positioning for up to 16 hours is a therapy we use for patients with more severe forms of ARDS, and high-level evidence points to mortality benefit in patients with moderate to severe ARDS if [mechanical] ventilation occurs,” said study coauthor James McCauley Walter, MD, of the pulmonary division at Northwestern University, Chicago.
With a “significant number of COVID-19 patients flooding the ICU, we quickly started to prone a lot of them, but if you are in a specific position for multiple hours a day, coupled with the neurotoxic effects of the SARS-CoV-2 virus itself, you may be exposed to a unique type of nerve injury,” he said.
Dr. Walter said that the “incidence of asymmetric neuropathies seems out of proportion to what has been reported in non–COVID-19 settings, which is what caught our attention.”
Many of these patients are discharged to rehabilitation hospitals, and “what we noticed, which was unique about COVID-19 patients coming to our rehab hospital, was that, compared with other patients who had been critically ill with a long hospital stay, there was a significantly higher percentage of COVID-19 patients who had peripheral nerve damage,” Dr. Franz said.
The authors described 12 of these patients who were admitted between April 24 and June 30, 2020 (mean age, 60.3 years; range, 23-80 years). The sample included White, Black, and Hispanic individuals. Eleven of the 12 post–COVID-19 patients with peripheral nerve damage had experienced prone positioning during acute management.
The average number of days patients received mechanical ventilation was 33.6 (range, 12-62 days). The average number of proning sessions was 4.5 (range, 1-16) with an average of 81.2 hours (range, 16-252 hours) spent prone.
A major contributor
Dr. Franz suggested that prone positioning is likely not the only cause of peripheral nerve damage but “may play a big role in these patients who are vulnerable because of viral infection and the critical illness that causes damage and nerve injuries.”
“The first component of lifesaving care for the critically ill in the ICU is intravenous fluids, mechanical ventilation, steroids, and antibiotics for infection,” said Dr. Walter.
“We are trying to come up with ways to place patients in prone position in safer ways, to pay attention to pressure points and areas of injury that we have seen and try to offload them, to see if we can decrease the rate of these injuries,” he added.
The researchers’ article includes a heat map diagram as a “template for where to focus the most efforts, in terms of decreasing pressure,” Dr. Walter said.
“The nerves are accepting too much force for gravely ill COVID-19 patients to handle, so we suggest using the template to determine where extra padding might be needed, or a protocol that might include changes in positioning,” he added.
Dr. Franz described the interventions used for COVID-19 patients with prone positioning–related peripheral nerve damage. “The first step is trying to address the problems one by one, either trying to solve them through exercise or teaching new skills, new ways to compensate, beginning with basic activities, such as getting out of bed and self-care,” he said.
Long-term recovery of nerve injuries depends on how severe the injuries are. Some nerves can slowly regenerate – possibly at the rate of 1 inch per month – which can be a long process, taking between a year and 18 months.
Dr. Franz said that therapies for this condition are “extrapolated from clinical trial work” on promoting nerve regeneration after surgery using electrical stimulation to enable nerves to regrow at a faster rate.
“Regeneration is not only slow, but it may not happen completely, leaving the patient with permanent nerve damage – in fact, based on our experience and what has been reported, the percentage of patients with full recovery is only 10%,” he said.
The most common symptomatic complaint other than lack of movement or feeling is neuropathic pain, “which may require medication to take the edge off the pain,” Dr. Franz added.
Irreversible damage?
Commenting on the study, Tae Chung, MD, of the departments of physical medicine, rehabilitation, and neurology, Johns Hopkins University, Baltimore, said the study “provides one of the first and the largest description of peripheral nerve injury associated with prone positioning for management of ARDS from COVID-19.”
Dr. Chung, who was not involved in the research, noted that “various neurological complications from COVID-19 have been reported, and some of them may result in irreversible neurological damage or delay the recovery from COVID-19 infection,” so “accurate and timely diagnosis of such neurological complications is critical for rehabilitation of the COVID-19 survivors.”
The study received no funding. Dr. Franz, Dr. Walter, study coauthors, and Dr. Chung report no relevant financial relationships.
A version of this article originally appeared on Medscape.com.
FROM THE BRITISH JOURNAL OF ANAESTHESIOLOGY
OTC ‘brain boosters’ may pose serious risks, experts say
, new research shows.
“Americans spend more than $600 million on over-the-counter smart pills every year, but we know very little about what is actually in these products,” said Pieter A. Cohen, MD, of the department of medicine at Harvard Medical School, Boston.
“Finding new combinations of drugs [that have] never been tested in humans in over-the-counter brain-boosting supplements is alarming,” said Dr. Cohen.
The study was published online Sept. 23 in Neurology Clinical Practice, a journal of the American Academy of Neurology.
Buyer beware
In a search of the National Institutes of Health Dietary Supplement Label Database and the Natural Medicines Database, Dr. Cohen and colleagues identified 10 supplements labeled as containing omberacetam, aniracetam, phenylpiracetam, or oxiracetam – four analogues of piracetam that are not approved for human use in the United States. Piracetam is also not approved in the United States.
In these 10 products, five unapproved drugs were discovered – omberacetam and aniracetam along with three others (phenibut, vinpocetine and picamilon).
By consuming the recommended serving size of these products, consumers could be exposed to pharmaceutical-level dosages of drugs including a maximum of 40.6 mg omberacetam (typical pharmacologic dose 10 mg), 502 mg of aniracetam (typical pharmacologic dose 200-750 mg), 15.4 mg of phenibut (typical dose 250-500 mg), 4.3 mg of vinpocetine (typical dose 5-40 mg), and 90.1 mg of picamilon (typical dose 50-200 mg), the study team reported.
Several drugs detected in these “smart” pills were not declared on the label, and several declared drugs were not detected in the products. For those products with drug quantities provided on the labels, three-quarters of declared quantities were inaccurate.
Consumers who use these cognitive enhancers could be exposed to amounts of these unapproved drugs that are fourfold greater than pharmaceutical dosages and combinations never tested in humans, the study team says. One product combined three different unapproved drugs and another product contained four different drugs.
“We have previously shown that these products may contain individual foreign drugs, but in our new study we found complex combinations of foreign drugs, up to four different drugs in a single product,” Dr. Cohen said.
The presence of these unapproved drugs in supplements, including at supratherapeutic dosages, suggests “serious risks to consumers and weaknesses in the regulatory framework under which supplements are permitted to be introduced in the U.S.,” Dr. Cohen and colleagues wrote.
“We should counsel our patients to avoid over-the-counter ‘smart pills’ until we can be assured as to the safety and efficacy of these products,” said Dr. Cohen.
Concerning findings
Glen R. Finney, MD, director of the Geisinger Memory and Cognition Program at the Neuroscience Institute, Geisinger Health System, Wilkes-Barre, Penn., said in an interview that two findings are very concerning: the lack of listed ingredients and especially the presence of unlisted drugs at active levels. “What if a person has a sensitivity or allergy to one of the unlisted drugs? This is a safety issue and a consumer issue,” Dr. Finney said.
Despite being widely promoted on television, “over-the-counter supplements are not regulated, so there is no guarantee that they contain what they claim, and there is very little evidence that they help memory and thinking even when they do have the ingredients they claim in the supplement,” said Dr. Finney,
“The best way to stay safe and help memory and thinking is to speak with your health providers about proven treatments that have good safety regulation, so you know what you’re getting, and what you’re getting from it,” Dr. Finney advised.
The study had no targeted funding. Dr. Cohen has collaborated in research with NSF International, received compensation from UptoDate, and received research support from Consumers Union and PEW Charitable Trusts. Dr. Finney has no relevant disclosures.
A version of this article originally appeared on Medscape.com.
, new research shows.
“Americans spend more than $600 million on over-the-counter smart pills every year, but we know very little about what is actually in these products,” said Pieter A. Cohen, MD, of the department of medicine at Harvard Medical School, Boston.
“Finding new combinations of drugs [that have] never been tested in humans in over-the-counter brain-boosting supplements is alarming,” said Dr. Cohen.
The study was published online Sept. 23 in Neurology Clinical Practice, a journal of the American Academy of Neurology.
Buyer beware
In a search of the National Institutes of Health Dietary Supplement Label Database and the Natural Medicines Database, Dr. Cohen and colleagues identified 10 supplements labeled as containing omberacetam, aniracetam, phenylpiracetam, or oxiracetam – four analogues of piracetam that are not approved for human use in the United States. Piracetam is also not approved in the United States.
In these 10 products, five unapproved drugs were discovered – omberacetam and aniracetam along with three others (phenibut, vinpocetine and picamilon).
By consuming the recommended serving size of these products, consumers could be exposed to pharmaceutical-level dosages of drugs including a maximum of 40.6 mg omberacetam (typical pharmacologic dose 10 mg), 502 mg of aniracetam (typical pharmacologic dose 200-750 mg), 15.4 mg of phenibut (typical dose 250-500 mg), 4.3 mg of vinpocetine (typical dose 5-40 mg), and 90.1 mg of picamilon (typical dose 50-200 mg), the study team reported.
Several drugs detected in these “smart” pills were not declared on the label, and several declared drugs were not detected in the products. For those products with drug quantities provided on the labels, three-quarters of declared quantities were inaccurate.
Consumers who use these cognitive enhancers could be exposed to amounts of these unapproved drugs that are fourfold greater than pharmaceutical dosages and combinations never tested in humans, the study team says. One product combined three different unapproved drugs and another product contained four different drugs.
“We have previously shown that these products may contain individual foreign drugs, but in our new study we found complex combinations of foreign drugs, up to four different drugs in a single product,” Dr. Cohen said.
The presence of these unapproved drugs in supplements, including at supratherapeutic dosages, suggests “serious risks to consumers and weaknesses in the regulatory framework under which supplements are permitted to be introduced in the U.S.,” Dr. Cohen and colleagues wrote.
“We should counsel our patients to avoid over-the-counter ‘smart pills’ until we can be assured as to the safety and efficacy of these products,” said Dr. Cohen.
Concerning findings
Glen R. Finney, MD, director of the Geisinger Memory and Cognition Program at the Neuroscience Institute, Geisinger Health System, Wilkes-Barre, Penn., said in an interview that two findings are very concerning: the lack of listed ingredients and especially the presence of unlisted drugs at active levels. “What if a person has a sensitivity or allergy to one of the unlisted drugs? This is a safety issue and a consumer issue,” Dr. Finney said.
Despite being widely promoted on television, “over-the-counter supplements are not regulated, so there is no guarantee that they contain what they claim, and there is very little evidence that they help memory and thinking even when they do have the ingredients they claim in the supplement,” said Dr. Finney,
“The best way to stay safe and help memory and thinking is to speak with your health providers about proven treatments that have good safety regulation, so you know what you’re getting, and what you’re getting from it,” Dr. Finney advised.
The study had no targeted funding. Dr. Cohen has collaborated in research with NSF International, received compensation from UptoDate, and received research support from Consumers Union and PEW Charitable Trusts. Dr. Finney has no relevant disclosures.
A version of this article originally appeared on Medscape.com.
, new research shows.
“Americans spend more than $600 million on over-the-counter smart pills every year, but we know very little about what is actually in these products,” said Pieter A. Cohen, MD, of the department of medicine at Harvard Medical School, Boston.
“Finding new combinations of drugs [that have] never been tested in humans in over-the-counter brain-boosting supplements is alarming,” said Dr. Cohen.
The study was published online Sept. 23 in Neurology Clinical Practice, a journal of the American Academy of Neurology.
Buyer beware
In a search of the National Institutes of Health Dietary Supplement Label Database and the Natural Medicines Database, Dr. Cohen and colleagues identified 10 supplements labeled as containing omberacetam, aniracetam, phenylpiracetam, or oxiracetam – four analogues of piracetam that are not approved for human use in the United States. Piracetam is also not approved in the United States.
In these 10 products, five unapproved drugs were discovered – omberacetam and aniracetam along with three others (phenibut, vinpocetine and picamilon).
By consuming the recommended serving size of these products, consumers could be exposed to pharmaceutical-level dosages of drugs including a maximum of 40.6 mg omberacetam (typical pharmacologic dose 10 mg), 502 mg of aniracetam (typical pharmacologic dose 200-750 mg), 15.4 mg of phenibut (typical dose 250-500 mg), 4.3 mg of vinpocetine (typical dose 5-40 mg), and 90.1 mg of picamilon (typical dose 50-200 mg), the study team reported.
Several drugs detected in these “smart” pills were not declared on the label, and several declared drugs were not detected in the products. For those products with drug quantities provided on the labels, three-quarters of declared quantities were inaccurate.
Consumers who use these cognitive enhancers could be exposed to amounts of these unapproved drugs that are fourfold greater than pharmaceutical dosages and combinations never tested in humans, the study team says. One product combined three different unapproved drugs and another product contained four different drugs.
“We have previously shown that these products may contain individual foreign drugs, but in our new study we found complex combinations of foreign drugs, up to four different drugs in a single product,” Dr. Cohen said.
The presence of these unapproved drugs in supplements, including at supratherapeutic dosages, suggests “serious risks to consumers and weaknesses in the regulatory framework under which supplements are permitted to be introduced in the U.S.,” Dr. Cohen and colleagues wrote.
“We should counsel our patients to avoid over-the-counter ‘smart pills’ until we can be assured as to the safety and efficacy of these products,” said Dr. Cohen.
Concerning findings
Glen R. Finney, MD, director of the Geisinger Memory and Cognition Program at the Neuroscience Institute, Geisinger Health System, Wilkes-Barre, Penn., said in an interview that two findings are very concerning: the lack of listed ingredients and especially the presence of unlisted drugs at active levels. “What if a person has a sensitivity or allergy to one of the unlisted drugs? This is a safety issue and a consumer issue,” Dr. Finney said.
Despite being widely promoted on television, “over-the-counter supplements are not regulated, so there is no guarantee that they contain what they claim, and there is very little evidence that they help memory and thinking even when they do have the ingredients they claim in the supplement,” said Dr. Finney,
“The best way to stay safe and help memory and thinking is to speak with your health providers about proven treatments that have good safety regulation, so you know what you’re getting, and what you’re getting from it,” Dr. Finney advised.
The study had no targeted funding. Dr. Cohen has collaborated in research with NSF International, received compensation from UptoDate, and received research support from Consumers Union and PEW Charitable Trusts. Dr. Finney has no relevant disclosures.
A version of this article originally appeared on Medscape.com.
FROM NEUROLOGY CLINICAL PRACTICE
Two new protein biomarkers may serve as prognostic indicators for outcomes in CLL
Two new protein biomarkers may serve as prognostic indicators for outcomes in chronic lymphocytic leukemia (CLL) patients, according to the results of a proteomic assessment of patients’ serum compared to their event-free survival (EFS).
The results were published in Experimental Hematology.
The study attempted to validate the prognostic ability of known proteomic markers measured pretreatment and to search for new proteomic markers that might be related to treatment response in CLL, according to Fatemeh Saberi Hosnijeh, MD, of Erasmus MC, University Medical Center, Rotterdam, The Netherlands, and colleagues.
Baseline serum samples were taken from 51 CLL patients who were then treated with chemoimmunotherapy. The samples were analyzed for 360 proteomic markers, and those results were compared with patient EFS.
Study subjects were selected from patients enrolled in the HOVON 109 clinical trial, a phase 1/2 trial designed to assess the efficacy and safety of first-line therapy involving chlorambucil, rituximab,and lenalidomide in elderly patients and young frail patients with advanced CLL.
The patients assessed comprised 30 men and 21 women, and the median EFS for all patients was 23 months (ranging from 1.25 to 60.9 months).
Promising biomarkers
The researchers found that patients who had high serum levels of the proteins sCD23 (P = .026), sCD27 (P = .04), the serine peptidase inhibitor SPINT1 (P = .001), and the surface antigen protein LY9 (P = .0003) had a shorter EFS than those with marker levels below the median.
“Taken together, our results validate the prognostic impact of sCD23 and highlight SPINT1 and LY9 as possible promising markers for treatment response in CLL patients,” the researchers stated.
“Despite the relatively small number of available cases, which had an impact on statistical power, our pilot study identified SPINT1 and LY9 as promising independent prognostic proteomic markers next to sCD23 and sCD27 in patients treated for CLL. Further studies with larger sample sizes are required to validate these results,” the researchers concluded.
This research was supported by a grant from Gilead Sciences and an EU TRANSCAN/Dutch Cancer Society grant. The authors declared that they had no conflicts of interest.
SOURCE: Hosnijeh FS et al. Exp Hematol. 2020;89:55-60.
Two new protein biomarkers may serve as prognostic indicators for outcomes in chronic lymphocytic leukemia (CLL) patients, according to the results of a proteomic assessment of patients’ serum compared to their event-free survival (EFS).
The results were published in Experimental Hematology.
The study attempted to validate the prognostic ability of known proteomic markers measured pretreatment and to search for new proteomic markers that might be related to treatment response in CLL, according to Fatemeh Saberi Hosnijeh, MD, of Erasmus MC, University Medical Center, Rotterdam, The Netherlands, and colleagues.
Baseline serum samples were taken from 51 CLL patients who were then treated with chemoimmunotherapy. The samples were analyzed for 360 proteomic markers, and those results were compared with patient EFS.
Study subjects were selected from patients enrolled in the HOVON 109 clinical trial, a phase 1/2 trial designed to assess the efficacy and safety of first-line therapy involving chlorambucil, rituximab,and lenalidomide in elderly patients and young frail patients with advanced CLL.
The patients assessed comprised 30 men and 21 women, and the median EFS for all patients was 23 months (ranging from 1.25 to 60.9 months).
Promising biomarkers
The researchers found that patients who had high serum levels of the proteins sCD23 (P = .026), sCD27 (P = .04), the serine peptidase inhibitor SPINT1 (P = .001), and the surface antigen protein LY9 (P = .0003) had a shorter EFS than those with marker levels below the median.
“Taken together, our results validate the prognostic impact of sCD23 and highlight SPINT1 and LY9 as possible promising markers for treatment response in CLL patients,” the researchers stated.
“Despite the relatively small number of available cases, which had an impact on statistical power, our pilot study identified SPINT1 and LY9 as promising independent prognostic proteomic markers next to sCD23 and sCD27 in patients treated for CLL. Further studies with larger sample sizes are required to validate these results,” the researchers concluded.
This research was supported by a grant from Gilead Sciences and an EU TRANSCAN/Dutch Cancer Society grant. The authors declared that they had no conflicts of interest.
SOURCE: Hosnijeh FS et al. Exp Hematol. 2020;89:55-60.
Two new protein biomarkers may serve as prognostic indicators for outcomes in chronic lymphocytic leukemia (CLL) patients, according to the results of a proteomic assessment of patients’ serum compared to their event-free survival (EFS).
The results were published in Experimental Hematology.
The study attempted to validate the prognostic ability of known proteomic markers measured pretreatment and to search for new proteomic markers that might be related to treatment response in CLL, according to Fatemeh Saberi Hosnijeh, MD, of Erasmus MC, University Medical Center, Rotterdam, The Netherlands, and colleagues.
Baseline serum samples were taken from 51 CLL patients who were then treated with chemoimmunotherapy. The samples were analyzed for 360 proteomic markers, and those results were compared with patient EFS.
Study subjects were selected from patients enrolled in the HOVON 109 clinical trial, a phase 1/2 trial designed to assess the efficacy and safety of first-line therapy involving chlorambucil, rituximab,and lenalidomide in elderly patients and young frail patients with advanced CLL.
The patients assessed comprised 30 men and 21 women, and the median EFS for all patients was 23 months (ranging from 1.25 to 60.9 months).
Promising biomarkers
The researchers found that patients who had high serum levels of the proteins sCD23 (P = .026), sCD27 (P = .04), the serine peptidase inhibitor SPINT1 (P = .001), and the surface antigen protein LY9 (P = .0003) had a shorter EFS than those with marker levels below the median.
“Taken together, our results validate the prognostic impact of sCD23 and highlight SPINT1 and LY9 as possible promising markers for treatment response in CLL patients,” the researchers stated.
“Despite the relatively small number of available cases, which had an impact on statistical power, our pilot study identified SPINT1 and LY9 as promising independent prognostic proteomic markers next to sCD23 and sCD27 in patients treated for CLL. Further studies with larger sample sizes are required to validate these results,” the researchers concluded.
This research was supported by a grant from Gilead Sciences and an EU TRANSCAN/Dutch Cancer Society grant. The authors declared that they had no conflicts of interest.
SOURCE: Hosnijeh FS et al. Exp Hematol. 2020;89:55-60.
FROM EXPERIMENTAL HEMATOLOGY
Survey quantifies COVID-19’s impact on oncology
An international survey provides new insights into how COVID-19 has affected, and may continue to affect, the field of oncology.
The survey showed that “COVID-19 has had a major impact on the organization of patient care, on the well-being of caregivers, on continued medical education, and on clinical trial activities in oncology,” stated Guy Jerusalem, MD, PhD, of Centre Hospitalier Universitaire de Liège (Belgium).
Dr. Jerusalem presented these findings at the European Society for Medical Oncology Virtual Congress 2020.
The survey was distributed by 20 oncologists from 10 of the countries most affected by COVID-19. Responses were obtained from 109 oncologists representing centers in 18 countries. The responses were recorded between June 17 and July 14, 2020.
The survey consisted of 95 items intended to evaluate the impact of COVID-19 on the organization of oncologic care. Questions encompassed the capacity and service offered at each center, the magnitude of COVID-19–based care interruptions and the reasons for them, the ensuing challenges faced, interventions implemented, and the estimated harms to patients during the pandemic.
The 109 oncologists surveyed had a median of 20 years of oncology experience. A majority of respondents were men (61.5%), and the median age was 48.5 years.
The respondents had worked predominantly (62.4%) at academic hospitals, with 29.6% at community hospitals. Most respondents worked at general hospitals with an oncology unit (66.1%) rather than a specialized separate cancer center (32.1%).
The most common specialty was breast cancer (60.6%), followed by gastrointestinal cancer (10.1%), urogenital cancer (9.2%), and lung cancer (8.3%).
Impact on treatment
The treatment modalities affected by the pandemic – through cancellations or delays in more than 10% of patients – included surgery (in 34% of centers), chemotherapy (22%), radiotherapy (13.7%), checkpoint inhibitor therapy (9.1%), monoclonal antibodies (9%), and oral targeted therapy (3.7%).
Among oncologists treating breast cancer, cancellations/delays in more than 10% of patients were reported for everolimus (18%), CDK4/6 inhibitors (8.9%), and endocrine therapy (2.2%).
Overall, 34.8% of respondents reported increased use of granulocyte colony–stimulating factor, and 6.4% reported increased use of erythropoietin.
On the other hand, 11.1% of respondents reported a decrease in the use of double immunotherapy, and 21.9% reported decreased use of corticosteroids.
Not only can the immunosuppressive effects of steroid use increase infection risks, Dr. Jerusalem noted, fever suppression can lead to a delayed diagnosis of COVID-19.
“To circumvent potential higher infection risks or greater disease severity, we use lower doses of steroids, but this is not based on studies,” he said.
“Previous exposure to steroids or being on steroids at the time of COVID-19 infection is a detrimental factor for complications and mortality,” commented ESMO President Solange Peters, MD, PhD, of Centre Hospitalier Universitaire Vaudois in Lausanne, Switzerland.
Dr. Peters noted that the observation was based on lung cancer registry findings. Furthermore, because data from smaller outbreaks of other coronavirus infections suggested worse prognosis and increased mortality, steroid use was already feared in the very early days of the COVID-19 pandemic.
Lastly, earlier cessation of palliative treatment was observed in 32.1% of centers, and 64.2% of respondents agreed that undertreatment because of COVID-19 is a major concern.
Dr. Jerusalem noted that the survey data do not explain the early cessation of palliative treatment. “I suspect that many patients died at home rather than alone in institutions because it was the only way they could die with their families around them.”
Telehealth, meetings, and trials
The survey also revealed rationales for the use of teleconsultation, including follow-up (94.5%), oral therapy (92.7%), immunotherapy (57.8%), and chemotherapy (55%).
Most respondents reported more frequent use of virtual meetings for continuing medical education (94%), oncologic team meetings (92%), and tumor boards (82%).
While about 82% of respondents said they were likely to continue the use of telemedicine, 45% said virtual conferences are not an acceptable alternative to live international conferences such as ESMO, Dr. Jerusalem said.
Finally, nearly three-quarters of respondents (72.5%) said all clinical trial activities are or will soon be activated, or never stopped, at their centers. On the other hand, 27.5% of respondents reported that their centers had major protocol violations or deviations, and 37% of respondents said they expect significant reductions in clinical trial activities this year.
Dr. Jerusalem concluded that COVID-19 is having a major, long-term impact on the organization of patient care, caregivers, continued medical education, and clinical trial activities in oncology.
He cautioned that “the risk of a delayed diagnosis of new cancers and economic consequences of COVID-19 on access to health care and cancer treatments have to be carefully evaluated.”
This research was funded by Fondation Léon Fredericq. Dr. Jerusalem disclosed relationships with Novartis, Roche, Lilly, Pfizer, Amgen, Bristol-Myers Squibb, AstraZeneca, Daiichi Sankyo, AbbVie, MedImmune, and Merck. Dr. Peters disclosed relationships with AbbVie, Amgen, AstraZeneca, and many other companies.
SOURCE: Jerusalem G et al. ESMO 2020, Abstract LBA76.
An international survey provides new insights into how COVID-19 has affected, and may continue to affect, the field of oncology.
The survey showed that “COVID-19 has had a major impact on the organization of patient care, on the well-being of caregivers, on continued medical education, and on clinical trial activities in oncology,” stated Guy Jerusalem, MD, PhD, of Centre Hospitalier Universitaire de Liège (Belgium).
Dr. Jerusalem presented these findings at the European Society for Medical Oncology Virtual Congress 2020.
The survey was distributed by 20 oncologists from 10 of the countries most affected by COVID-19. Responses were obtained from 109 oncologists representing centers in 18 countries. The responses were recorded between June 17 and July 14, 2020.
The survey consisted of 95 items intended to evaluate the impact of COVID-19 on the organization of oncologic care. Questions encompassed the capacity and service offered at each center, the magnitude of COVID-19–based care interruptions and the reasons for them, the ensuing challenges faced, interventions implemented, and the estimated harms to patients during the pandemic.
The 109 oncologists surveyed had a median of 20 years of oncology experience. A majority of respondents were men (61.5%), and the median age was 48.5 years.
The respondents had worked predominantly (62.4%) at academic hospitals, with 29.6% at community hospitals. Most respondents worked at general hospitals with an oncology unit (66.1%) rather than a specialized separate cancer center (32.1%).
The most common specialty was breast cancer (60.6%), followed by gastrointestinal cancer (10.1%), urogenital cancer (9.2%), and lung cancer (8.3%).
Impact on treatment
The treatment modalities affected by the pandemic – through cancellations or delays in more than 10% of patients – included surgery (in 34% of centers), chemotherapy (22%), radiotherapy (13.7%), checkpoint inhibitor therapy (9.1%), monoclonal antibodies (9%), and oral targeted therapy (3.7%).
Among oncologists treating breast cancer, cancellations/delays in more than 10% of patients were reported for everolimus (18%), CDK4/6 inhibitors (8.9%), and endocrine therapy (2.2%).
Overall, 34.8% of respondents reported increased use of granulocyte colony–stimulating factor, and 6.4% reported increased use of erythropoietin.
On the other hand, 11.1% of respondents reported a decrease in the use of double immunotherapy, and 21.9% reported decreased use of corticosteroids.
Not only can the immunosuppressive effects of steroid use increase infection risks, Dr. Jerusalem noted, fever suppression can lead to a delayed diagnosis of COVID-19.
“To circumvent potential higher infection risks or greater disease severity, we use lower doses of steroids, but this is not based on studies,” he said.
“Previous exposure to steroids or being on steroids at the time of COVID-19 infection is a detrimental factor for complications and mortality,” commented ESMO President Solange Peters, MD, PhD, of Centre Hospitalier Universitaire Vaudois in Lausanne, Switzerland.
Dr. Peters noted that the observation was based on lung cancer registry findings. Furthermore, because data from smaller outbreaks of other coronavirus infections suggested worse prognosis and increased mortality, steroid use was already feared in the very early days of the COVID-19 pandemic.
Lastly, earlier cessation of palliative treatment was observed in 32.1% of centers, and 64.2% of respondents agreed that undertreatment because of COVID-19 is a major concern.
Dr. Jerusalem noted that the survey data do not explain the early cessation of palliative treatment. “I suspect that many patients died at home rather than alone in institutions because it was the only way they could die with their families around them.”
Telehealth, meetings, and trials
The survey also revealed rationales for the use of teleconsultation, including follow-up (94.5%), oral therapy (92.7%), immunotherapy (57.8%), and chemotherapy (55%).
Most respondents reported more frequent use of virtual meetings for continuing medical education (94%), oncologic team meetings (92%), and tumor boards (82%).
While about 82% of respondents said they were likely to continue the use of telemedicine, 45% said virtual conferences are not an acceptable alternative to live international conferences such as ESMO, Dr. Jerusalem said.
Finally, nearly three-quarters of respondents (72.5%) said all clinical trial activities are or will soon be activated, or never stopped, at their centers. On the other hand, 27.5% of respondents reported that their centers had major protocol violations or deviations, and 37% of respondents said they expect significant reductions in clinical trial activities this year.
Dr. Jerusalem concluded that COVID-19 is having a major, long-term impact on the organization of patient care, caregivers, continued medical education, and clinical trial activities in oncology.
He cautioned that “the risk of a delayed diagnosis of new cancers and economic consequences of COVID-19 on access to health care and cancer treatments have to be carefully evaluated.”
This research was funded by Fondation Léon Fredericq. Dr. Jerusalem disclosed relationships with Novartis, Roche, Lilly, Pfizer, Amgen, Bristol-Myers Squibb, AstraZeneca, Daiichi Sankyo, AbbVie, MedImmune, and Merck. Dr. Peters disclosed relationships with AbbVie, Amgen, AstraZeneca, and many other companies.
SOURCE: Jerusalem G et al. ESMO 2020, Abstract LBA76.
An international survey provides new insights into how COVID-19 has affected, and may continue to affect, the field of oncology.
The survey showed that “COVID-19 has had a major impact on the organization of patient care, on the well-being of caregivers, on continued medical education, and on clinical trial activities in oncology,” stated Guy Jerusalem, MD, PhD, of Centre Hospitalier Universitaire de Liège (Belgium).
Dr. Jerusalem presented these findings at the European Society for Medical Oncology Virtual Congress 2020.
The survey was distributed by 20 oncologists from 10 of the countries most affected by COVID-19. Responses were obtained from 109 oncologists representing centers in 18 countries. The responses were recorded between June 17 and July 14, 2020.
The survey consisted of 95 items intended to evaluate the impact of COVID-19 on the organization of oncologic care. Questions encompassed the capacity and service offered at each center, the magnitude of COVID-19–based care interruptions and the reasons for them, the ensuing challenges faced, interventions implemented, and the estimated harms to patients during the pandemic.
The 109 oncologists surveyed had a median of 20 years of oncology experience. A majority of respondents were men (61.5%), and the median age was 48.5 years.
The respondents had worked predominantly (62.4%) at academic hospitals, with 29.6% at community hospitals. Most respondents worked at general hospitals with an oncology unit (66.1%) rather than a specialized separate cancer center (32.1%).
The most common specialty was breast cancer (60.6%), followed by gastrointestinal cancer (10.1%), urogenital cancer (9.2%), and lung cancer (8.3%).
Impact on treatment
The treatment modalities affected by the pandemic – through cancellations or delays in more than 10% of patients – included surgery (in 34% of centers), chemotherapy (22%), radiotherapy (13.7%), checkpoint inhibitor therapy (9.1%), monoclonal antibodies (9%), and oral targeted therapy (3.7%).
Among oncologists treating breast cancer, cancellations/delays in more than 10% of patients were reported for everolimus (18%), CDK4/6 inhibitors (8.9%), and endocrine therapy (2.2%).
Overall, 34.8% of respondents reported increased use of granulocyte colony–stimulating factor, and 6.4% reported increased use of erythropoietin.
On the other hand, 11.1% of respondents reported a decrease in the use of double immunotherapy, and 21.9% reported decreased use of corticosteroids.
Not only can the immunosuppressive effects of steroid use increase infection risks, Dr. Jerusalem noted, fever suppression can lead to a delayed diagnosis of COVID-19.
“To circumvent potential higher infection risks or greater disease severity, we use lower doses of steroids, but this is not based on studies,” he said.
“Previous exposure to steroids or being on steroids at the time of COVID-19 infection is a detrimental factor for complications and mortality,” commented ESMO President Solange Peters, MD, PhD, of Centre Hospitalier Universitaire Vaudois in Lausanne, Switzerland.
Dr. Peters noted that the observation was based on lung cancer registry findings. Furthermore, because data from smaller outbreaks of other coronavirus infections suggested worse prognosis and increased mortality, steroid use was already feared in the very early days of the COVID-19 pandemic.
Lastly, earlier cessation of palliative treatment was observed in 32.1% of centers, and 64.2% of respondents agreed that undertreatment because of COVID-19 is a major concern.
Dr. Jerusalem noted that the survey data do not explain the early cessation of palliative treatment. “I suspect that many patients died at home rather than alone in institutions because it was the only way they could die with their families around them.”
Telehealth, meetings, and trials
The survey also revealed rationales for the use of teleconsultation, including follow-up (94.5%), oral therapy (92.7%), immunotherapy (57.8%), and chemotherapy (55%).
Most respondents reported more frequent use of virtual meetings for continuing medical education (94%), oncologic team meetings (92%), and tumor boards (82%).
While about 82% of respondents said they were likely to continue the use of telemedicine, 45% said virtual conferences are not an acceptable alternative to live international conferences such as ESMO, Dr. Jerusalem said.
Finally, nearly three-quarters of respondents (72.5%) said all clinical trial activities are or will soon be activated, or never stopped, at their centers. On the other hand, 27.5% of respondents reported that their centers had major protocol violations or deviations, and 37% of respondents said they expect significant reductions in clinical trial activities this year.
Dr. Jerusalem concluded that COVID-19 is having a major, long-term impact on the organization of patient care, caregivers, continued medical education, and clinical trial activities in oncology.
He cautioned that “the risk of a delayed diagnosis of new cancers and economic consequences of COVID-19 on access to health care and cancer treatments have to be carefully evaluated.”
This research was funded by Fondation Léon Fredericq. Dr. Jerusalem disclosed relationships with Novartis, Roche, Lilly, Pfizer, Amgen, Bristol-Myers Squibb, AstraZeneca, Daiichi Sankyo, AbbVie, MedImmune, and Merck. Dr. Peters disclosed relationships with AbbVie, Amgen, AstraZeneca, and many other companies.
SOURCE: Jerusalem G et al. ESMO 2020, Abstract LBA76.
FROM ESMO 2020
In MS, serious adverse effects are more common in rituximab versus ocrelizumab
, a new postmarketing analysis finds, and AE-related deaths were not unusual. Serious AEs, and those linked to death, were more common in the rituximab group, although the reported infection rate was higher in the ocrelizumab group.
The analysis, published Aug. 21 in the Multiple Sclerosis Journal, highlights the importance of monitoring patients for infections and encouraging them to do the same, the authors said.
“This report points out the impact of treatments in terms of unrecognized or underappreciated complications,” said Mark Gudesblatt, MD, medical director of the Comprehensive MS Care Center at South Shore Neurologic Associates in Patchogue, N.Y., who reviewed the study findings. “These medications have a significant downside.”
Lead author Natalia Gonzalez Caldito, MD, of the University of Texas Southwestern Medical Center, Dallas, and colleagues analyzed AEs for the drugs in the Food and Drug Administration’s Adverse Event Reporting System. They only included cases in which the drugs were solely used to treat MS and were indicated as the cause of the AEs.
Rituximab (Rituxan) and ocrelizumab (Ocrevus) are both monoclonal antibodies. Rituximab is not FDA approved for MS but is used off label; ocrelizumab is approved for the relapsing forms of MS and primary progressive MS.
The researchers found 623 AE reports and 1,466 total AEs for rituximab and 7,948 and 23,613, respectively, for ocrelizumab. The average ages for the groups were 48.76 versus 43.89, respectively, (P < .001), and 71% in each group were women.
Among total AEs, serious AEs were more common in the rituximab group versus the ocrelizumab group (64.8% vs. 56.3%, respectively, P < .001). Adverse events that caused death were also more common in the rituximab group versus the ocrelizumab group (5.75% vs. 2.11%, P < .001).
Infections and infestations were more common in the ocrelizumab group than the rituximab group (21.93% vs. 11.05%, respectively, P < .001). However, certain AEs were more common in the rituximab group than the ocrelizumab group: Those in the blood and lymphatic system category (2.86% vs. 0.91%, respectively, P < .001), and those in the neoplasms category (4.02% vs. 1.28%, P < .001, respectively).
Researchers found a highly strong association between rituximab and a rare side effects – ear pruritus (itching, 0.8%). They also identified signals for infusion-related reaction (4.82%), throat irritation (4.01%) and throat tightness (1.44%), malignant melanoma (0.8%), breast cancer (1.77%) and neutropenia (2.57%).
Among the ocrelizumab AEs, researchers found the strongest association with oral herpes (2.21%), and they found other signals for herpes zoster (2.89%), urinary tract infection (10.52%), nasopharyngitis (9.79%), infusion-related reaction (4.76%), throat irritation (3.08%), and notably MS relapses (4.1%).
“Additional pharmacovigilance studies are needed to explore and further characterize these findings,” the researchers wrote. “Furthermore, these observations suggest that the AE profile of other second-generation anti-CD20 [monoclonal antibodies] may also differ from those of rituximab and ocrelizumab.”
Dr. Gudesblatt praised the analysis and said the findings make sense. “Use of B-cell–depleting agents lead to accumulative immune deficiency in routine care, which leads to higher rates of infection,” he said. He added that, “in the clinical trials for ocrelizumab, patients with IgG and IgM deficiency were excluded, but there is no advisement to exclude such patients in real care. The rates of infection in those patients with MS who have preexisting immune deficiencies and who are treated with these agents are unknown.”
The prospect of AEs is especially worrisome, he said, since “this information is only short term. Who knows what effect the prolonged use of unopposed B-cell depletion will have on infections in the long run?”
Neurologist Mitchell Wallin, MD, MPH, of George Washington University, Washington, and the University of Maryland, Baltimore County, said in an interview that the analysis is rigorous and especially useful because it includes a wider array of subjects – including those who are older and sicker – than took part in earlier clinical trials. “It’s really important to look at this real-world evidence,” he said, “and basically put this in the back of your head when you follow up with your patients.”
No study funding was reported. The corresponding author reported various disclosures. Dr. Gudesblatt and Dr. Wallin reported no disclosures.
SOURCE: Gonzalez Caldito N et al. Mult Scler J. 2020 Aug 21. doi: 10.1177/1352458520949986.
, a new postmarketing analysis finds, and AE-related deaths were not unusual. Serious AEs, and those linked to death, were more common in the rituximab group, although the reported infection rate was higher in the ocrelizumab group.
The analysis, published Aug. 21 in the Multiple Sclerosis Journal, highlights the importance of monitoring patients for infections and encouraging them to do the same, the authors said.
“This report points out the impact of treatments in terms of unrecognized or underappreciated complications,” said Mark Gudesblatt, MD, medical director of the Comprehensive MS Care Center at South Shore Neurologic Associates in Patchogue, N.Y., who reviewed the study findings. “These medications have a significant downside.”
Lead author Natalia Gonzalez Caldito, MD, of the University of Texas Southwestern Medical Center, Dallas, and colleagues analyzed AEs for the drugs in the Food and Drug Administration’s Adverse Event Reporting System. They only included cases in which the drugs were solely used to treat MS and were indicated as the cause of the AEs.
Rituximab (Rituxan) and ocrelizumab (Ocrevus) are both monoclonal antibodies. Rituximab is not FDA approved for MS but is used off label; ocrelizumab is approved for the relapsing forms of MS and primary progressive MS.
The researchers found 623 AE reports and 1,466 total AEs for rituximab and 7,948 and 23,613, respectively, for ocrelizumab. The average ages for the groups were 48.76 versus 43.89, respectively, (P < .001), and 71% in each group were women.
Among total AEs, serious AEs were more common in the rituximab group versus the ocrelizumab group (64.8% vs. 56.3%, respectively, P < .001). Adverse events that caused death were also more common in the rituximab group versus the ocrelizumab group (5.75% vs. 2.11%, P < .001).
Infections and infestations were more common in the ocrelizumab group than the rituximab group (21.93% vs. 11.05%, respectively, P < .001). However, certain AEs were more common in the rituximab group than the ocrelizumab group: Those in the blood and lymphatic system category (2.86% vs. 0.91%, respectively, P < .001), and those in the neoplasms category (4.02% vs. 1.28%, P < .001, respectively).
Researchers found a highly strong association between rituximab and a rare side effects – ear pruritus (itching, 0.8%). They also identified signals for infusion-related reaction (4.82%), throat irritation (4.01%) and throat tightness (1.44%), malignant melanoma (0.8%), breast cancer (1.77%) and neutropenia (2.57%).
Among the ocrelizumab AEs, researchers found the strongest association with oral herpes (2.21%), and they found other signals for herpes zoster (2.89%), urinary tract infection (10.52%), nasopharyngitis (9.79%), infusion-related reaction (4.76%), throat irritation (3.08%), and notably MS relapses (4.1%).
“Additional pharmacovigilance studies are needed to explore and further characterize these findings,” the researchers wrote. “Furthermore, these observations suggest that the AE profile of other second-generation anti-CD20 [monoclonal antibodies] may also differ from those of rituximab and ocrelizumab.”
Dr. Gudesblatt praised the analysis and said the findings make sense. “Use of B-cell–depleting agents lead to accumulative immune deficiency in routine care, which leads to higher rates of infection,” he said. He added that, “in the clinical trials for ocrelizumab, patients with IgG and IgM deficiency were excluded, but there is no advisement to exclude such patients in real care. The rates of infection in those patients with MS who have preexisting immune deficiencies and who are treated with these agents are unknown.”
The prospect of AEs is especially worrisome, he said, since “this information is only short term. Who knows what effect the prolonged use of unopposed B-cell depletion will have on infections in the long run?”
Neurologist Mitchell Wallin, MD, MPH, of George Washington University, Washington, and the University of Maryland, Baltimore County, said in an interview that the analysis is rigorous and especially useful because it includes a wider array of subjects – including those who are older and sicker – than took part in earlier clinical trials. “It’s really important to look at this real-world evidence,” he said, “and basically put this in the back of your head when you follow up with your patients.”
No study funding was reported. The corresponding author reported various disclosures. Dr. Gudesblatt and Dr. Wallin reported no disclosures.
SOURCE: Gonzalez Caldito N et al. Mult Scler J. 2020 Aug 21. doi: 10.1177/1352458520949986.
, a new postmarketing analysis finds, and AE-related deaths were not unusual. Serious AEs, and those linked to death, were more common in the rituximab group, although the reported infection rate was higher in the ocrelizumab group.
The analysis, published Aug. 21 in the Multiple Sclerosis Journal, highlights the importance of monitoring patients for infections and encouraging them to do the same, the authors said.
“This report points out the impact of treatments in terms of unrecognized or underappreciated complications,” said Mark Gudesblatt, MD, medical director of the Comprehensive MS Care Center at South Shore Neurologic Associates in Patchogue, N.Y., who reviewed the study findings. “These medications have a significant downside.”
Lead author Natalia Gonzalez Caldito, MD, of the University of Texas Southwestern Medical Center, Dallas, and colleagues analyzed AEs for the drugs in the Food and Drug Administration’s Adverse Event Reporting System. They only included cases in which the drugs were solely used to treat MS and were indicated as the cause of the AEs.
Rituximab (Rituxan) and ocrelizumab (Ocrevus) are both monoclonal antibodies. Rituximab is not FDA approved for MS but is used off label; ocrelizumab is approved for the relapsing forms of MS and primary progressive MS.
The researchers found 623 AE reports and 1,466 total AEs for rituximab and 7,948 and 23,613, respectively, for ocrelizumab. The average ages for the groups were 48.76 versus 43.89, respectively, (P < .001), and 71% in each group were women.
Among total AEs, serious AEs were more common in the rituximab group versus the ocrelizumab group (64.8% vs. 56.3%, respectively, P < .001). Adverse events that caused death were also more common in the rituximab group versus the ocrelizumab group (5.75% vs. 2.11%, P < .001).
Infections and infestations were more common in the ocrelizumab group than the rituximab group (21.93% vs. 11.05%, respectively, P < .001). However, certain AEs were more common in the rituximab group than the ocrelizumab group: Those in the blood and lymphatic system category (2.86% vs. 0.91%, respectively, P < .001), and those in the neoplasms category (4.02% vs. 1.28%, P < .001, respectively).
Researchers found a highly strong association between rituximab and a rare side effects – ear pruritus (itching, 0.8%). They also identified signals for infusion-related reaction (4.82%), throat irritation (4.01%) and throat tightness (1.44%), malignant melanoma (0.8%), breast cancer (1.77%) and neutropenia (2.57%).
Among the ocrelizumab AEs, researchers found the strongest association with oral herpes (2.21%), and they found other signals for herpes zoster (2.89%), urinary tract infection (10.52%), nasopharyngitis (9.79%), infusion-related reaction (4.76%), throat irritation (3.08%), and notably MS relapses (4.1%).
“Additional pharmacovigilance studies are needed to explore and further characterize these findings,” the researchers wrote. “Furthermore, these observations suggest that the AE profile of other second-generation anti-CD20 [monoclonal antibodies] may also differ from those of rituximab and ocrelizumab.”
Dr. Gudesblatt praised the analysis and said the findings make sense. “Use of B-cell–depleting agents lead to accumulative immune deficiency in routine care, which leads to higher rates of infection,” he said. He added that, “in the clinical trials for ocrelizumab, patients with IgG and IgM deficiency were excluded, but there is no advisement to exclude such patients in real care. The rates of infection in those patients with MS who have preexisting immune deficiencies and who are treated with these agents are unknown.”
The prospect of AEs is especially worrisome, he said, since “this information is only short term. Who knows what effect the prolonged use of unopposed B-cell depletion will have on infections in the long run?”
Neurologist Mitchell Wallin, MD, MPH, of George Washington University, Washington, and the University of Maryland, Baltimore County, said in an interview that the analysis is rigorous and especially useful because it includes a wider array of subjects – including those who are older and sicker – than took part in earlier clinical trials. “It’s really important to look at this real-world evidence,” he said, “and basically put this in the back of your head when you follow up with your patients.”
No study funding was reported. The corresponding author reported various disclosures. Dr. Gudesblatt and Dr. Wallin reported no disclosures.
SOURCE: Gonzalez Caldito N et al. Mult Scler J. 2020 Aug 21. doi: 10.1177/1352458520949986.
FROM MULTIPLE SCLEROSIS JOURNAL
Blood biomarker may predict Parkinson’s disease progression
Although the biomarker, neurofilament light chain (NfL), is not especially specific, it is the first blood-based biomarker for Parkinson’s disease.
Neurofilaments are components of the neural cytoskeleton, where they maintain structure along with other functions. Following axonal damage, NfL gets released into extracellular fluids. Previously, NfL has been detected in cerebrospinal fluid (CSF) in patients with multiple sclerosis and neurodegenerative dementias. NfL in the CSF can distinguish Parkinson’s disease (PD) from multiple system atrophy and progressive supranuclear palsy.
That’s useful, but a serum marker would open new doors. “An easily accessible biomarker that will serve as an indicator of diagnosis, disease state, and progression, as well as a marker of response to therapeutic intervention is needed. A biomarker will strengthen the ability to select patients for inclusion or stratification within clinical trials,” commented Okeanis Vaou, MD, director of the movement disorders program at St. Elizabeth’s Medical Center in Brighton, Mass. Dr. Vaou was not involved in the study, which was published Aug. 15 in Movement Disorders.
A potential biomarker?
To determine if serum NfL levels would correlate with CSF values and had potential as a biomarker, a large, multi-institutional team of researchers led by Brit Mollenhauer, MD, of the University Medical Center Goettingen (Germany), and Danielle Graham, MD, of Biogen, drew data from a prospective, longitudinal, single-center project called the De Novo Parkinson’s disease (DeNoPa) cohort.
The researchers analyzed data from 176 subjects, including drug-naive patients with newly diagnosed PD; age, sex, and education matched healthy controls; and patients who were initially diagnosed with Parkinson’s disease but had their diagnoses changed to a cognate or neurodegenerative disorder (OND). The researchers also drew 514 serum samples from the prospective longitudinal, observational, international multicenter study Parkinson’s Progression Marker Initiative (PPMI) cohort.
In the DeNoPa cohort, OND patients had the highest median CSF NfL levels at baseline (839 pg/mL) followed by PD patients (562 pg/mL) and healthy controls (494 pg/mL; P = .01). There was a strong correlation between CSF and serum NfL levels in a cross-sectional exploratory study with the PPMI cohort.
Age and sex covariates in the PPMI cohort explained 51% of NfL variability. After adjustment for age and sex, baseline median blood NfL levels were highest in the OND group (16.23 pg/mL), followed by the genetic PD group (13.36 pg/mL), prodromal participants (12.20 pg/mL), PD patients (11.73 pg/mL), unaffected mutation carriers (11.63 pg/mL), and healthy controls (11.05 pg/mL; F test P < .0001). Median serum NfL increased by 3.35% per year of age (P < .0001), and median serum NfL was 6.79% higher in women (P = .0002).
Doubling of adjusted serum NfL levels were associated with a median increase in the Movement Disorder Society Unified Parkinson’s Disease Rating Scale total score of 3.45 points (false-discovery rate–adjusted P = .0115), a median decrease in Symbol Digit Modality Test total score of 1.39 (FDR P = .026), a median decrease in Hopkins Verbal Learning Tests with discrimination recognition score of 0.3 (FDR P = .03), and a median decrease in Hopkins Verbal Learning Tests with retention score of 0.029 (FDR P = .04).
More specific markers needed
The findings are intriguing, said Dr Vaou, but “we need to acknowledge that increased NfL levels are not specific enough to Parkinson’s disease and reflect neuronal and axonal damage. Therefore, there is a need for more specific markers to support diagnostic accuracy, rate of progression, and ultimate prognosis. A serum NfL assay may be useful to clinicians evaluating patients with PD or OND diagnosis and mitigate the misdiagnosis of atypical PD. NfL may be particularly useful in differentiating PD from cognate disorders such as multiple system atrophy, progressive supranuclear palsy, and dementia with Lewy bodies.”
The current success is the result of large patient databases containing phenotypic data, imaging, and tests of tissue, blood, and cerebrospinal fluid, along with collaborations between advocacy groups, academia, and industry, according to Dr. Vaou. As that work continues, it could uncover more specific biomarkers “that will allow us not only to help with diagnosis and treatment but with disease progression, inclusion, recruitment and stratification in clinical studies, as well as (be an) indicator of response to therapeutic intervention of an investigational drug.”
The study was funded by the Michael J. Fox Foundation for Parkinson’s Research. Dr. Vaou had no relevant financial disclosures.
SOURCE: Mollenhauer B et al. Mov Disord. 2020 Aug 15. doi: 10.1002/mds.28206.
Although the biomarker, neurofilament light chain (NfL), is not especially specific, it is the first blood-based biomarker for Parkinson’s disease.
Neurofilaments are components of the neural cytoskeleton, where they maintain structure along with other functions. Following axonal damage, NfL gets released into extracellular fluids. Previously, NfL has been detected in cerebrospinal fluid (CSF) in patients with multiple sclerosis and neurodegenerative dementias. NfL in the CSF can distinguish Parkinson’s disease (PD) from multiple system atrophy and progressive supranuclear palsy.
That’s useful, but a serum marker would open new doors. “An easily accessible biomarker that will serve as an indicator of diagnosis, disease state, and progression, as well as a marker of response to therapeutic intervention is needed. A biomarker will strengthen the ability to select patients for inclusion or stratification within clinical trials,” commented Okeanis Vaou, MD, director of the movement disorders program at St. Elizabeth’s Medical Center in Brighton, Mass. Dr. Vaou was not involved in the study, which was published Aug. 15 in Movement Disorders.
A potential biomarker?
To determine if serum NfL levels would correlate with CSF values and had potential as a biomarker, a large, multi-institutional team of researchers led by Brit Mollenhauer, MD, of the University Medical Center Goettingen (Germany), and Danielle Graham, MD, of Biogen, drew data from a prospective, longitudinal, single-center project called the De Novo Parkinson’s disease (DeNoPa) cohort.
The researchers analyzed data from 176 subjects, including drug-naive patients with newly diagnosed PD; age, sex, and education matched healthy controls; and patients who were initially diagnosed with Parkinson’s disease but had their diagnoses changed to a cognate or neurodegenerative disorder (OND). The researchers also drew 514 serum samples from the prospective longitudinal, observational, international multicenter study Parkinson’s Progression Marker Initiative (PPMI) cohort.
In the DeNoPa cohort, OND patients had the highest median CSF NfL levels at baseline (839 pg/mL) followed by PD patients (562 pg/mL) and healthy controls (494 pg/mL; P = .01). There was a strong correlation between CSF and serum NfL levels in a cross-sectional exploratory study with the PPMI cohort.
Age and sex covariates in the PPMI cohort explained 51% of NfL variability. After adjustment for age and sex, baseline median blood NfL levels were highest in the OND group (16.23 pg/mL), followed by the genetic PD group (13.36 pg/mL), prodromal participants (12.20 pg/mL), PD patients (11.73 pg/mL), unaffected mutation carriers (11.63 pg/mL), and healthy controls (11.05 pg/mL; F test P < .0001). Median serum NfL increased by 3.35% per year of age (P < .0001), and median serum NfL was 6.79% higher in women (P = .0002).
Doubling of adjusted serum NfL levels were associated with a median increase in the Movement Disorder Society Unified Parkinson’s Disease Rating Scale total score of 3.45 points (false-discovery rate–adjusted P = .0115), a median decrease in Symbol Digit Modality Test total score of 1.39 (FDR P = .026), a median decrease in Hopkins Verbal Learning Tests with discrimination recognition score of 0.3 (FDR P = .03), and a median decrease in Hopkins Verbal Learning Tests with retention score of 0.029 (FDR P = .04).
More specific markers needed
The findings are intriguing, said Dr Vaou, but “we need to acknowledge that increased NfL levels are not specific enough to Parkinson’s disease and reflect neuronal and axonal damage. Therefore, there is a need for more specific markers to support diagnostic accuracy, rate of progression, and ultimate prognosis. A serum NfL assay may be useful to clinicians evaluating patients with PD or OND diagnosis and mitigate the misdiagnosis of atypical PD. NfL may be particularly useful in differentiating PD from cognate disorders such as multiple system atrophy, progressive supranuclear palsy, and dementia with Lewy bodies.”
The current success is the result of large patient databases containing phenotypic data, imaging, and tests of tissue, blood, and cerebrospinal fluid, along with collaborations between advocacy groups, academia, and industry, according to Dr. Vaou. As that work continues, it could uncover more specific biomarkers “that will allow us not only to help with diagnosis and treatment but with disease progression, inclusion, recruitment and stratification in clinical studies, as well as (be an) indicator of response to therapeutic intervention of an investigational drug.”
The study was funded by the Michael J. Fox Foundation for Parkinson’s Research. Dr. Vaou had no relevant financial disclosures.
SOURCE: Mollenhauer B et al. Mov Disord. 2020 Aug 15. doi: 10.1002/mds.28206.
Although the biomarker, neurofilament light chain (NfL), is not especially specific, it is the first blood-based biomarker for Parkinson’s disease.
Neurofilaments are components of the neural cytoskeleton, where they maintain structure along with other functions. Following axonal damage, NfL gets released into extracellular fluids. Previously, NfL has been detected in cerebrospinal fluid (CSF) in patients with multiple sclerosis and neurodegenerative dementias. NfL in the CSF can distinguish Parkinson’s disease (PD) from multiple system atrophy and progressive supranuclear palsy.
That’s useful, but a serum marker would open new doors. “An easily accessible biomarker that will serve as an indicator of diagnosis, disease state, and progression, as well as a marker of response to therapeutic intervention is needed. A biomarker will strengthen the ability to select patients for inclusion or stratification within clinical trials,” commented Okeanis Vaou, MD, director of the movement disorders program at St. Elizabeth’s Medical Center in Brighton, Mass. Dr. Vaou was not involved in the study, which was published Aug. 15 in Movement Disorders.
A potential biomarker?
To determine if serum NfL levels would correlate with CSF values and had potential as a biomarker, a large, multi-institutional team of researchers led by Brit Mollenhauer, MD, of the University Medical Center Goettingen (Germany), and Danielle Graham, MD, of Biogen, drew data from a prospective, longitudinal, single-center project called the De Novo Parkinson’s disease (DeNoPa) cohort.
The researchers analyzed data from 176 subjects, including drug-naive patients with newly diagnosed PD; age, sex, and education matched healthy controls; and patients who were initially diagnosed with Parkinson’s disease but had their diagnoses changed to a cognate or neurodegenerative disorder (OND). The researchers also drew 514 serum samples from the prospective longitudinal, observational, international multicenter study Parkinson’s Progression Marker Initiative (PPMI) cohort.
In the DeNoPa cohort, OND patients had the highest median CSF NfL levels at baseline (839 pg/mL) followed by PD patients (562 pg/mL) and healthy controls (494 pg/mL; P = .01). There was a strong correlation between CSF and serum NfL levels in a cross-sectional exploratory study with the PPMI cohort.
Age and sex covariates in the PPMI cohort explained 51% of NfL variability. After adjustment for age and sex, baseline median blood NfL levels were highest in the OND group (16.23 pg/mL), followed by the genetic PD group (13.36 pg/mL), prodromal participants (12.20 pg/mL), PD patients (11.73 pg/mL), unaffected mutation carriers (11.63 pg/mL), and healthy controls (11.05 pg/mL; F test P < .0001). Median serum NfL increased by 3.35% per year of age (P < .0001), and median serum NfL was 6.79% higher in women (P = .0002).
Doubling of adjusted serum NfL levels were associated with a median increase in the Movement Disorder Society Unified Parkinson’s Disease Rating Scale total score of 3.45 points (false-discovery rate–adjusted P = .0115), a median decrease in Symbol Digit Modality Test total score of 1.39 (FDR P = .026), a median decrease in Hopkins Verbal Learning Tests with discrimination recognition score of 0.3 (FDR P = .03), and a median decrease in Hopkins Verbal Learning Tests with retention score of 0.029 (FDR P = .04).
More specific markers needed
The findings are intriguing, said Dr Vaou, but “we need to acknowledge that increased NfL levels are not specific enough to Parkinson’s disease and reflect neuronal and axonal damage. Therefore, there is a need for more specific markers to support diagnostic accuracy, rate of progression, and ultimate prognosis. A serum NfL assay may be useful to clinicians evaluating patients with PD or OND diagnosis and mitigate the misdiagnosis of atypical PD. NfL may be particularly useful in differentiating PD from cognate disorders such as multiple system atrophy, progressive supranuclear palsy, and dementia with Lewy bodies.”
The current success is the result of large patient databases containing phenotypic data, imaging, and tests of tissue, blood, and cerebrospinal fluid, along with collaborations between advocacy groups, academia, and industry, according to Dr. Vaou. As that work continues, it could uncover more specific biomarkers “that will allow us not only to help with diagnosis and treatment but with disease progression, inclusion, recruitment and stratification in clinical studies, as well as (be an) indicator of response to therapeutic intervention of an investigational drug.”
The study was funded by the Michael J. Fox Foundation for Parkinson’s Research. Dr. Vaou had no relevant financial disclosures.
SOURCE: Mollenhauer B et al. Mov Disord. 2020 Aug 15. doi: 10.1002/mds.28206.
FROM MOVEMENT DISORDERS
Lowering rituximab dose in patients with MS proves safe and effective
“Given its favorable cost-effectiveness profile, [rituximab] remains a valuable treatment option in the current landscape of MS treatments, even at the reduced dose,” wrote Giulio Disanto, MD, PhD, of the Neurocenter of Southern Switzerland in Lugano, and coauthors. The study was published in Multiple Sclerosis Journal.
To determine the clinical and radiologic effectiveness of deescalating rituximab dosage – along with assessing any adverse outcomes – this observational, single-center study examined 59 patients with MS who had been treated with rituximab at 1,000 mg for at least 1 year before the study began. Roughly 63% (n = 37) of the patients had relapsing remitting MS (RRMS), while the rest (n = 22) had secondary progressive disease (SPD). Their median age was 51, and nearly 75% were women.
All patients underwent neurologic examinations at baseline and then every 3 months for 1 year, with new symptoms, infections, or adverse events being assessed via the Expanded Disability Status Scale (EDSS). They also underwent brain and spinal MRI at baseline and at 12 months while blood samples were taken at baseline and then every 3 months for 1 year, with previous data for both collected when available.
Study results
All 59 patients completed 12-month follow-up, and no relapses occurred in the year after lowering rituximab dosage to 500 mg. No significant differences were observed when comparing EDSS scores at the start of the 1,000-mg dose with the start of the 500-mg dose (Wilcoxon P = .131) as well as from the start of the 500-mg dose to the end of follow-up (Wilcoxon P = .284). Analyzing RRMS and SPD patients separately also led to no differences in EDSS scores from the start of the 500-mg dose to the end of follow-up (Wilcoxon P = .531; Wilcoxon P = .408).
During the 1,000-mg treatment period the number of patients who developed at least one new T2 lesion on their brain or spine was 9 and 4, respectively. During the 500-mg period, just one patient developed a new T2 brain lesion and two patients developed new T2 spine lesions. IgG and IgM levels did not change from the start of 500-mg treatment, although total dose of rituximab was inversely associated with IgG concentrations when previous treatment with 1,000 mg was factored in (coefficient, −0.439; P = 0.041).
A total of 33 patients reported at least one adverse event during the 500-mg treatment period, with only three events being classified as serious: one pancreatitis, one coronary stenting, and one neutropenia.
Validating clinical experience
“This randomized trial is an important step,” said Timothy Vollmer, MD, of the Rocky Mountain MS Center in Westminster, Colo., in an interview. “It clearly supports that you can lessen the dose, which will allow us to use this revolutionary drug for a longer period of time in patients.”
Dr. Vollmer noted that, at his center, they have been using 500 mg of rituximab over a 6-month period since 2010 without a formal clinical trial and with no notable difference in adverse outcomes on MRIs or disability scales. “This validates what we’ve been doing, which we appreciate,” he said.
“The next thing you have to do is determine whether you really have to give it every 6 months,” he added, “because the treatment effect in most patients will last, in terms of B-cell depletion, about a year or more. What we should be testing next is giving the 500 mg and waiting until patients begin to recover B cells before we give them the next cycle, to see if that helps decrease the major side effect, which is a drop in IgG levels.”
The authors acknowledged their study’s limitations, including a moderate sample size, a short follow-up period after 500-mg dosage, and an inability to confirm consistency among 1,000-mg dose administration among all patients, which “may well influence efficacy and safety measures.”
The study was supported by the Neurocenter of Southern Switzerland. One author declared numerous potential conflicts of interest, including receiving speaker fees, research fees, and travel support, and serving on advisory boards for various foundations, universities, and pharmaceutical companies.
SOURCE: Disanto G et al. Mult Scler J. 2020 Aug 25. doi: 10.1177/1352458520952036.
“Given its favorable cost-effectiveness profile, [rituximab] remains a valuable treatment option in the current landscape of MS treatments, even at the reduced dose,” wrote Giulio Disanto, MD, PhD, of the Neurocenter of Southern Switzerland in Lugano, and coauthors. The study was published in Multiple Sclerosis Journal.
To determine the clinical and radiologic effectiveness of deescalating rituximab dosage – along with assessing any adverse outcomes – this observational, single-center study examined 59 patients with MS who had been treated with rituximab at 1,000 mg for at least 1 year before the study began. Roughly 63% (n = 37) of the patients had relapsing remitting MS (RRMS), while the rest (n = 22) had secondary progressive disease (SPD). Their median age was 51, and nearly 75% were women.
All patients underwent neurologic examinations at baseline and then every 3 months for 1 year, with new symptoms, infections, or adverse events being assessed via the Expanded Disability Status Scale (EDSS). They also underwent brain and spinal MRI at baseline and at 12 months while blood samples were taken at baseline and then every 3 months for 1 year, with previous data for both collected when available.
Study results
All 59 patients completed 12-month follow-up, and no relapses occurred in the year after lowering rituximab dosage to 500 mg. No significant differences were observed when comparing EDSS scores at the start of the 1,000-mg dose with the start of the 500-mg dose (Wilcoxon P = .131) as well as from the start of the 500-mg dose to the end of follow-up (Wilcoxon P = .284). Analyzing RRMS and SPD patients separately also led to no differences in EDSS scores from the start of the 500-mg dose to the end of follow-up (Wilcoxon P = .531; Wilcoxon P = .408).
During the 1,000-mg treatment period the number of patients who developed at least one new T2 lesion on their brain or spine was 9 and 4, respectively. During the 500-mg period, just one patient developed a new T2 brain lesion and two patients developed new T2 spine lesions. IgG and IgM levels did not change from the start of 500-mg treatment, although total dose of rituximab was inversely associated with IgG concentrations when previous treatment with 1,000 mg was factored in (coefficient, −0.439; P = 0.041).
A total of 33 patients reported at least one adverse event during the 500-mg treatment period, with only three events being classified as serious: one pancreatitis, one coronary stenting, and one neutropenia.
Validating clinical experience
“This randomized trial is an important step,” said Timothy Vollmer, MD, of the Rocky Mountain MS Center in Westminster, Colo., in an interview. “It clearly supports that you can lessen the dose, which will allow us to use this revolutionary drug for a longer period of time in patients.”
Dr. Vollmer noted that, at his center, they have been using 500 mg of rituximab over a 6-month period since 2010 without a formal clinical trial and with no notable difference in adverse outcomes on MRIs or disability scales. “This validates what we’ve been doing, which we appreciate,” he said.
“The next thing you have to do is determine whether you really have to give it every 6 months,” he added, “because the treatment effect in most patients will last, in terms of B-cell depletion, about a year or more. What we should be testing next is giving the 500 mg and waiting until patients begin to recover B cells before we give them the next cycle, to see if that helps decrease the major side effect, which is a drop in IgG levels.”
The authors acknowledged their study’s limitations, including a moderate sample size, a short follow-up period after 500-mg dosage, and an inability to confirm consistency among 1,000-mg dose administration among all patients, which “may well influence efficacy and safety measures.”
The study was supported by the Neurocenter of Southern Switzerland. One author declared numerous potential conflicts of interest, including receiving speaker fees, research fees, and travel support, and serving on advisory boards for various foundations, universities, and pharmaceutical companies.
SOURCE: Disanto G et al. Mult Scler J. 2020 Aug 25. doi: 10.1177/1352458520952036.
“Given its favorable cost-effectiveness profile, [rituximab] remains a valuable treatment option in the current landscape of MS treatments, even at the reduced dose,” wrote Giulio Disanto, MD, PhD, of the Neurocenter of Southern Switzerland in Lugano, and coauthors. The study was published in Multiple Sclerosis Journal.
To determine the clinical and radiologic effectiveness of deescalating rituximab dosage – along with assessing any adverse outcomes – this observational, single-center study examined 59 patients with MS who had been treated with rituximab at 1,000 mg for at least 1 year before the study began. Roughly 63% (n = 37) of the patients had relapsing remitting MS (RRMS), while the rest (n = 22) had secondary progressive disease (SPD). Their median age was 51, and nearly 75% were women.
All patients underwent neurologic examinations at baseline and then every 3 months for 1 year, with new symptoms, infections, or adverse events being assessed via the Expanded Disability Status Scale (EDSS). They also underwent brain and spinal MRI at baseline and at 12 months while blood samples were taken at baseline and then every 3 months for 1 year, with previous data for both collected when available.
Study results
All 59 patients completed 12-month follow-up, and no relapses occurred in the year after lowering rituximab dosage to 500 mg. No significant differences were observed when comparing EDSS scores at the start of the 1,000-mg dose with the start of the 500-mg dose (Wilcoxon P = .131) as well as from the start of the 500-mg dose to the end of follow-up (Wilcoxon P = .284). Analyzing RRMS and SPD patients separately also led to no differences in EDSS scores from the start of the 500-mg dose to the end of follow-up (Wilcoxon P = .531; Wilcoxon P = .408).
During the 1,000-mg treatment period the number of patients who developed at least one new T2 lesion on their brain or spine was 9 and 4, respectively. During the 500-mg period, just one patient developed a new T2 brain lesion and two patients developed new T2 spine lesions. IgG and IgM levels did not change from the start of 500-mg treatment, although total dose of rituximab was inversely associated with IgG concentrations when previous treatment with 1,000 mg was factored in (coefficient, −0.439; P = 0.041).
A total of 33 patients reported at least one adverse event during the 500-mg treatment period, with only three events being classified as serious: one pancreatitis, one coronary stenting, and one neutropenia.
Validating clinical experience
“This randomized trial is an important step,” said Timothy Vollmer, MD, of the Rocky Mountain MS Center in Westminster, Colo., in an interview. “It clearly supports that you can lessen the dose, which will allow us to use this revolutionary drug for a longer period of time in patients.”
Dr. Vollmer noted that, at his center, they have been using 500 mg of rituximab over a 6-month period since 2010 without a formal clinical trial and with no notable difference in adverse outcomes on MRIs or disability scales. “This validates what we’ve been doing, which we appreciate,” he said.
“The next thing you have to do is determine whether you really have to give it every 6 months,” he added, “because the treatment effect in most patients will last, in terms of B-cell depletion, about a year or more. What we should be testing next is giving the 500 mg and waiting until patients begin to recover B cells before we give them the next cycle, to see if that helps decrease the major side effect, which is a drop in IgG levels.”
The authors acknowledged their study’s limitations, including a moderate sample size, a short follow-up period after 500-mg dosage, and an inability to confirm consistency among 1,000-mg dose administration among all patients, which “may well influence efficacy and safety measures.”
The study was supported by the Neurocenter of Southern Switzerland. One author declared numerous potential conflicts of interest, including receiving speaker fees, research fees, and travel support, and serving on advisory boards for various foundations, universities, and pharmaceutical companies.
SOURCE: Disanto G et al. Mult Scler J. 2020 Aug 25. doi: 10.1177/1352458520952036.
FROM MULTIPLE SCLEROSIS JOURNAL
Oxidative stress linked to cytogenetic abnormalities in CLL
Oxidative stress may play a role in pathogenesis of B-cell chronic lymphocytic leukemia (B-CLL), according to the results of a biochemical and cytogenetic study of patients published online in Experimental and Molecular Pathology.
The study evaluated the serum levels of oxidative stress biomarkers [conjugated dienes (CD), malondialdehyde (MDA), and nitrite levels] and the levels of antioxidant biomarkers [ceruloplasmin (CP) and glutathione peroxidase (GPx)] in 64 B-CLL patients. The relationship between these biomarkers and the presence of cytogenetic abnormalities was examined, according to Tatiana Zhevak, MD, of Sechenov First Moscow (Russia) State Medical University, and colleagues.
Cytogenetic abnormalities have previously been determined to be linked to a poorer prognosis in CLL patients, and factors that increase the frequency of CA have been shown to increase the risk of rapid tumor progression, Dr. Zhevak and her colleagues stated.
Oxidative stress connection
Enhanced oxidative stress was detected in B-CLL patients as shown by their increased levels of serum CD, MDA, and nitrite, as well as a demonstrated imbalance in the antioxidant defense system as shown by an increased serum CP level and decreased serum GPx activity, according to the researchers.
In addition, these metabolic changes were found to be greater in those patients whose lymphocytes harbored specific cytogenetic abnormalities, and could be predicted by the serum levels of CD. Specifically, the odds of harboring a cytogenetic abnormality increased by a factor of 1.88 (P = .004) for every one-unit increase in serum CD level (mcmol/L), according to the authors.
“Collectively, the results support our hypothesis that oxidative stress and resulting lipid peroxidation play a role in pathogenesis of B-CLL and provide a rational basis for the use of agents regulating the pro-oxidant and antioxidant activity in the treatment of B-CLL patients,” the researchers concluded.
The research was unsponsored and the authors reported having no conflicts.
SOURCE: Zhevak T et al. Exp Mol Patholo. 2020 Oct;16:104524 doi: 10.1016/j.yexmp.2020.104524.
Oxidative stress may play a role in pathogenesis of B-cell chronic lymphocytic leukemia (B-CLL), according to the results of a biochemical and cytogenetic study of patients published online in Experimental and Molecular Pathology.
The study evaluated the serum levels of oxidative stress biomarkers [conjugated dienes (CD), malondialdehyde (MDA), and nitrite levels] and the levels of antioxidant biomarkers [ceruloplasmin (CP) and glutathione peroxidase (GPx)] in 64 B-CLL patients. The relationship between these biomarkers and the presence of cytogenetic abnormalities was examined, according to Tatiana Zhevak, MD, of Sechenov First Moscow (Russia) State Medical University, and colleagues.
Cytogenetic abnormalities have previously been determined to be linked to a poorer prognosis in CLL patients, and factors that increase the frequency of CA have been shown to increase the risk of rapid tumor progression, Dr. Zhevak and her colleagues stated.
Oxidative stress connection
Enhanced oxidative stress was detected in B-CLL patients as shown by their increased levels of serum CD, MDA, and nitrite, as well as a demonstrated imbalance in the antioxidant defense system as shown by an increased serum CP level and decreased serum GPx activity, according to the researchers.
In addition, these metabolic changes were found to be greater in those patients whose lymphocytes harbored specific cytogenetic abnormalities, and could be predicted by the serum levels of CD. Specifically, the odds of harboring a cytogenetic abnormality increased by a factor of 1.88 (P = .004) for every one-unit increase in serum CD level (mcmol/L), according to the authors.
“Collectively, the results support our hypothesis that oxidative stress and resulting lipid peroxidation play a role in pathogenesis of B-CLL and provide a rational basis for the use of agents regulating the pro-oxidant and antioxidant activity in the treatment of B-CLL patients,” the researchers concluded.
The research was unsponsored and the authors reported having no conflicts.
SOURCE: Zhevak T et al. Exp Mol Patholo. 2020 Oct;16:104524 doi: 10.1016/j.yexmp.2020.104524.
Oxidative stress may play a role in pathogenesis of B-cell chronic lymphocytic leukemia (B-CLL), according to the results of a biochemical and cytogenetic study of patients published online in Experimental and Molecular Pathology.
The study evaluated the serum levels of oxidative stress biomarkers [conjugated dienes (CD), malondialdehyde (MDA), and nitrite levels] and the levels of antioxidant biomarkers [ceruloplasmin (CP) and glutathione peroxidase (GPx)] in 64 B-CLL patients. The relationship between these biomarkers and the presence of cytogenetic abnormalities was examined, according to Tatiana Zhevak, MD, of Sechenov First Moscow (Russia) State Medical University, and colleagues.
Cytogenetic abnormalities have previously been determined to be linked to a poorer prognosis in CLL patients, and factors that increase the frequency of CA have been shown to increase the risk of rapid tumor progression, Dr. Zhevak and her colleagues stated.
Oxidative stress connection
Enhanced oxidative stress was detected in B-CLL patients as shown by their increased levels of serum CD, MDA, and nitrite, as well as a demonstrated imbalance in the antioxidant defense system as shown by an increased serum CP level and decreased serum GPx activity, according to the researchers.
In addition, these metabolic changes were found to be greater in those patients whose lymphocytes harbored specific cytogenetic abnormalities, and could be predicted by the serum levels of CD. Specifically, the odds of harboring a cytogenetic abnormality increased by a factor of 1.88 (P = .004) for every one-unit increase in serum CD level (mcmol/L), according to the authors.
“Collectively, the results support our hypothesis that oxidative stress and resulting lipid peroxidation play a role in pathogenesis of B-CLL and provide a rational basis for the use of agents regulating the pro-oxidant and antioxidant activity in the treatment of B-CLL patients,” the researchers concluded.
The research was unsponsored and the authors reported having no conflicts.
SOURCE: Zhevak T et al. Exp Mol Patholo. 2020 Oct;16:104524 doi: 10.1016/j.yexmp.2020.104524.
FROM Experimental and Molecular Pathology
Drug combo slows functional decline in ALS
, according to results of the phase 2/3 CENTAUR study.
Patients with a fast-progressing form of ALS who were treated with AMX0035 “retained higher levels of physical function over 6 months compared with those who received placebo,” reported principal investigator Sabrina Paganoni, MD, PhD, of the Sean M. Healey and AMG Center for ALS at Massachusetts General Hospital, Boston.
“This is very hopeful news for people affected by ALS, especially because we were able to see a treatment effect in a relatively short period of time,” Dr. Paganoni said.
The study was published online Sept. 3 in the New England Journal of Medicine.
In this study, AMX0035 demonstrated a “clinically meaningful benefit and a favorable safety profile for people living with ALS,” Josh Cohen, co-CEO, chairman, and cofounder at Amylyx, said in a news release. The company is “working collaboratively and expeditiously with agencies worldwide to bring this potential new treatment option forward.”
“The data ... makes a clear and compelling case that AMX0035 should be made available to people with ALS as soon as possible,” Calaneet Balas, president and CEO of The ALS Association, said in the release.
The CENTAUR trial
Sodium phenylbutyrate and taurursodiol have been found to reduce neuronal death in experimental models. AMX0035 combines 3 g sodium phenylbutyrate and 1 g of taurursodiol.
The CENTAUR trial tested AMX0035 against placebo in 137 ALS patients with symptom onset within the prior 18 months, with 89 patients in the AMX0035 group and 48 in the placebo group. AMX0035 or matching placebo were administered once daily for 3 weeks and then twice daily for a planned duration of 24 weeks.
In a modified intention-to-treat analysis, the mean rate of change in the Amyotrophic Lateral Sclerosis Functional Rating Scale–Revised (ALSFRS-R) score was −1.24 points per month with AMX0035 and −1.66 points per month with placebo (difference, 0.42 points per month; 95% CI, 0.03 - 0.81; P = .03). After 24 weeks, patients treated with AMX0035 scored on average 2.32 points higher on the ALSFRS-R than their peers on placebo group (P = .03).
“The score, consisting of four subdomains, showed a change that was most prominent for the fine-motor subscale and less apparent for the other subscales,” the investigators said.
Treatment with AMX0035 led to slowing of disease progression in a population in which many participants were receiving riluzole (Tiglutik), edaravone (Radicava) or both, they pointed out.
The secondary outcomes were rate of decline in isometric muscle strength and breathing function; change in plasma phosphorylated axonal neurofilament H subunit (pNF-H) levels; and the time to composite events of death, tracheostomy, permanent ventilation, and hospitalization. These outcomes did not differ significantly between the two groups.
Open-label extension ongoing
AMX0035 was generally well tolerated. Nearly all patients in both groups had one or more adverse events. Events occurring at 2% or greater frequency in the AMX0035 group were primarily gastrointestinal (diarrhea, nausea, salivary hypersecretion, and abdominal discomfort). Serious adverse events were more common in the placebo group (19% vs. 12%). The incidence of respiratory serious adverse events was 8% in the placebo group and 3% in the AMX0035 group.
More patients on active treatment than placebo (19% vs. 8%) stopped the trial regimen early owing to adverse events. The most common adverse events leading to discontinuation of the trial regimen were diarrhea and respiratory failure.
The trial was “too short for us to detect an effect on survival,” Dr. Paganoni said in an interview. Most of the participants who completed the trial elected to enroll in an open-label extension study and receive AMX0035 long-term. “This is important because it will teach us about the impact of AMX0035 on survival,” said Dr. Paganoni.
Interim data from the ongoing open-label extension study are being submitted to a peer-reviewed journal shortly and will be published in the coming months.
A cause for hope
“There has been understandable frustration with the slow pace of development of therapy for ALS,” Michael Benatar, MD, PhD, University of Miami, and Michael McDermott, PhD, University of Rochester (N.Y.), said in an accompanying editorial.
“Despite dozens of trials, few pharmacologic agents have emerged that affect functional decline or survival – and all only modestly so. Although the effects of sodium phenylbutyrate–taurursodiol are similarly modest, the incremental gains that they provide in the battle against ALS are a cause for hope,” they wrote.
They caution, however, that this study was enriched for patients with more rapidly progressive disease, which “raises questions about generalizability to the broader population of patients with ALS.
“Although the patients who were enrolled in the trial may not be biologically different from the broader population of patients with ALS, the magnitude of therapeutic effect may be smaller in the latter,” Dr. Benatar and Dr. McDermott noted.
They said that in light of “residual questions about efficacy and the ability of patients to continue taking the drug,” they agree with the authors’ conclusion that “longer and larger trials are needed to evaluate the efficacy and safety of sodium phenylbutyrate–taurursodiol in persons with ALS.”
Given these “tantalizing preliminary data,” Dr. Benatar and Dr. McDermott said they look forward to “a confirmatory phase 3 trial.”
The study was supported by Amylyx Pharmaceuticals, the ALS Finding a Cure Foundation, and the ALS Association. Dr. Paganoni has received grants from Revalesio, Ra Pharma, Biohaven, Clene, and Prilenia. A complete list of disclosures for authors and editorialists is available with the original article.
A version of this article originally appeared on Medscape.com.
, according to results of the phase 2/3 CENTAUR study.
Patients with a fast-progressing form of ALS who were treated with AMX0035 “retained higher levels of physical function over 6 months compared with those who received placebo,” reported principal investigator Sabrina Paganoni, MD, PhD, of the Sean M. Healey and AMG Center for ALS at Massachusetts General Hospital, Boston.
“This is very hopeful news for people affected by ALS, especially because we were able to see a treatment effect in a relatively short period of time,” Dr. Paganoni said.
The study was published online Sept. 3 in the New England Journal of Medicine.
In this study, AMX0035 demonstrated a “clinically meaningful benefit and a favorable safety profile for people living with ALS,” Josh Cohen, co-CEO, chairman, and cofounder at Amylyx, said in a news release. The company is “working collaboratively and expeditiously with agencies worldwide to bring this potential new treatment option forward.”
“The data ... makes a clear and compelling case that AMX0035 should be made available to people with ALS as soon as possible,” Calaneet Balas, president and CEO of The ALS Association, said in the release.
The CENTAUR trial
Sodium phenylbutyrate and taurursodiol have been found to reduce neuronal death in experimental models. AMX0035 combines 3 g sodium phenylbutyrate and 1 g of taurursodiol.
The CENTAUR trial tested AMX0035 against placebo in 137 ALS patients with symptom onset within the prior 18 months, with 89 patients in the AMX0035 group and 48 in the placebo group. AMX0035 or matching placebo were administered once daily for 3 weeks and then twice daily for a planned duration of 24 weeks.
In a modified intention-to-treat analysis, the mean rate of change in the Amyotrophic Lateral Sclerosis Functional Rating Scale–Revised (ALSFRS-R) score was −1.24 points per month with AMX0035 and −1.66 points per month with placebo (difference, 0.42 points per month; 95% CI, 0.03 - 0.81; P = .03). After 24 weeks, patients treated with AMX0035 scored on average 2.32 points higher on the ALSFRS-R than their peers on placebo group (P = .03).
“The score, consisting of four subdomains, showed a change that was most prominent for the fine-motor subscale and less apparent for the other subscales,” the investigators said.
Treatment with AMX0035 led to slowing of disease progression in a population in which many participants were receiving riluzole (Tiglutik), edaravone (Radicava) or both, they pointed out.
The secondary outcomes were rate of decline in isometric muscle strength and breathing function; change in plasma phosphorylated axonal neurofilament H subunit (pNF-H) levels; and the time to composite events of death, tracheostomy, permanent ventilation, and hospitalization. These outcomes did not differ significantly between the two groups.
Open-label extension ongoing
AMX0035 was generally well tolerated. Nearly all patients in both groups had one or more adverse events. Events occurring at 2% or greater frequency in the AMX0035 group were primarily gastrointestinal (diarrhea, nausea, salivary hypersecretion, and abdominal discomfort). Serious adverse events were more common in the placebo group (19% vs. 12%). The incidence of respiratory serious adverse events was 8% in the placebo group and 3% in the AMX0035 group.
More patients on active treatment than placebo (19% vs. 8%) stopped the trial regimen early owing to adverse events. The most common adverse events leading to discontinuation of the trial regimen were diarrhea and respiratory failure.
The trial was “too short for us to detect an effect on survival,” Dr. Paganoni said in an interview. Most of the participants who completed the trial elected to enroll in an open-label extension study and receive AMX0035 long-term. “This is important because it will teach us about the impact of AMX0035 on survival,” said Dr. Paganoni.
Interim data from the ongoing open-label extension study are being submitted to a peer-reviewed journal shortly and will be published in the coming months.
A cause for hope
“There has been understandable frustration with the slow pace of development of therapy for ALS,” Michael Benatar, MD, PhD, University of Miami, and Michael McDermott, PhD, University of Rochester (N.Y.), said in an accompanying editorial.
“Despite dozens of trials, few pharmacologic agents have emerged that affect functional decline or survival – and all only modestly so. Although the effects of sodium phenylbutyrate–taurursodiol are similarly modest, the incremental gains that they provide in the battle against ALS are a cause for hope,” they wrote.
They caution, however, that this study was enriched for patients with more rapidly progressive disease, which “raises questions about generalizability to the broader population of patients with ALS.
“Although the patients who were enrolled in the trial may not be biologically different from the broader population of patients with ALS, the magnitude of therapeutic effect may be smaller in the latter,” Dr. Benatar and Dr. McDermott noted.
They said that in light of “residual questions about efficacy and the ability of patients to continue taking the drug,” they agree with the authors’ conclusion that “longer and larger trials are needed to evaluate the efficacy and safety of sodium phenylbutyrate–taurursodiol in persons with ALS.”
Given these “tantalizing preliminary data,” Dr. Benatar and Dr. McDermott said they look forward to “a confirmatory phase 3 trial.”
The study was supported by Amylyx Pharmaceuticals, the ALS Finding a Cure Foundation, and the ALS Association. Dr. Paganoni has received grants from Revalesio, Ra Pharma, Biohaven, Clene, and Prilenia. A complete list of disclosures for authors and editorialists is available with the original article.
A version of this article originally appeared on Medscape.com.
, according to results of the phase 2/3 CENTAUR study.
Patients with a fast-progressing form of ALS who were treated with AMX0035 “retained higher levels of physical function over 6 months compared with those who received placebo,” reported principal investigator Sabrina Paganoni, MD, PhD, of the Sean M. Healey and AMG Center for ALS at Massachusetts General Hospital, Boston.
“This is very hopeful news for people affected by ALS, especially because we were able to see a treatment effect in a relatively short period of time,” Dr. Paganoni said.
The study was published online Sept. 3 in the New England Journal of Medicine.
In this study, AMX0035 demonstrated a “clinically meaningful benefit and a favorable safety profile for people living with ALS,” Josh Cohen, co-CEO, chairman, and cofounder at Amylyx, said in a news release. The company is “working collaboratively and expeditiously with agencies worldwide to bring this potential new treatment option forward.”
“The data ... makes a clear and compelling case that AMX0035 should be made available to people with ALS as soon as possible,” Calaneet Balas, president and CEO of The ALS Association, said in the release.
The CENTAUR trial
Sodium phenylbutyrate and taurursodiol have been found to reduce neuronal death in experimental models. AMX0035 combines 3 g sodium phenylbutyrate and 1 g of taurursodiol.
The CENTAUR trial tested AMX0035 against placebo in 137 ALS patients with symptom onset within the prior 18 months, with 89 patients in the AMX0035 group and 48 in the placebo group. AMX0035 or matching placebo were administered once daily for 3 weeks and then twice daily for a planned duration of 24 weeks.
In a modified intention-to-treat analysis, the mean rate of change in the Amyotrophic Lateral Sclerosis Functional Rating Scale–Revised (ALSFRS-R) score was −1.24 points per month with AMX0035 and −1.66 points per month with placebo (difference, 0.42 points per month; 95% CI, 0.03 - 0.81; P = .03). After 24 weeks, patients treated with AMX0035 scored on average 2.32 points higher on the ALSFRS-R than their peers on placebo group (P = .03).
“The score, consisting of four subdomains, showed a change that was most prominent for the fine-motor subscale and less apparent for the other subscales,” the investigators said.
Treatment with AMX0035 led to slowing of disease progression in a population in which many participants were receiving riluzole (Tiglutik), edaravone (Radicava) or both, they pointed out.
The secondary outcomes were rate of decline in isometric muscle strength and breathing function; change in plasma phosphorylated axonal neurofilament H subunit (pNF-H) levels; and the time to composite events of death, tracheostomy, permanent ventilation, and hospitalization. These outcomes did not differ significantly between the two groups.
Open-label extension ongoing
AMX0035 was generally well tolerated. Nearly all patients in both groups had one or more adverse events. Events occurring at 2% or greater frequency in the AMX0035 group were primarily gastrointestinal (diarrhea, nausea, salivary hypersecretion, and abdominal discomfort). Serious adverse events were more common in the placebo group (19% vs. 12%). The incidence of respiratory serious adverse events was 8% in the placebo group and 3% in the AMX0035 group.
More patients on active treatment than placebo (19% vs. 8%) stopped the trial regimen early owing to adverse events. The most common adverse events leading to discontinuation of the trial regimen were diarrhea and respiratory failure.
The trial was “too short for us to detect an effect on survival,” Dr. Paganoni said in an interview. Most of the participants who completed the trial elected to enroll in an open-label extension study and receive AMX0035 long-term. “This is important because it will teach us about the impact of AMX0035 on survival,” said Dr. Paganoni.
Interim data from the ongoing open-label extension study are being submitted to a peer-reviewed journal shortly and will be published in the coming months.
A cause for hope
“There has been understandable frustration with the slow pace of development of therapy for ALS,” Michael Benatar, MD, PhD, University of Miami, and Michael McDermott, PhD, University of Rochester (N.Y.), said in an accompanying editorial.
“Despite dozens of trials, few pharmacologic agents have emerged that affect functional decline or survival – and all only modestly so. Although the effects of sodium phenylbutyrate–taurursodiol are similarly modest, the incremental gains that they provide in the battle against ALS are a cause for hope,” they wrote.
They caution, however, that this study was enriched for patients with more rapidly progressive disease, which “raises questions about generalizability to the broader population of patients with ALS.
“Although the patients who were enrolled in the trial may not be biologically different from the broader population of patients with ALS, the magnitude of therapeutic effect may be smaller in the latter,” Dr. Benatar and Dr. McDermott noted.
They said that in light of “residual questions about efficacy and the ability of patients to continue taking the drug,” they agree with the authors’ conclusion that “longer and larger trials are needed to evaluate the efficacy and safety of sodium phenylbutyrate–taurursodiol in persons with ALS.”
Given these “tantalizing preliminary data,” Dr. Benatar and Dr. McDermott said they look forward to “a confirmatory phase 3 trial.”
The study was supported by Amylyx Pharmaceuticals, the ALS Finding a Cure Foundation, and the ALS Association. Dr. Paganoni has received grants from Revalesio, Ra Pharma, Biohaven, Clene, and Prilenia. A complete list of disclosures for authors and editorialists is available with the original article.
A version of this article originally appeared on Medscape.com.
From New England Journal of Medicine
Blood biomarkers could help predict when athletes recover from concussions
, according to a new study of collegiate athletes and recovery time. “Although preliminary, the current results highlight the potential role of biomarkers in tracking neuronal recovery, which may be associated with duration of [return to sport],” wrote Cassandra L. Pattinson, PhD, of the University of Queensland, Brisbane, Australia, and the National Institutes of Health, Bethesda, Md., along with coauthors. The study was published in JAMA Network Open.
To determine if three specific blood biomarkers – total tau protein, glial fibrillary acidic protein (GFAP), and neurofilament light chain protein (NfL) – can help predict when athletes should return from sports-related concussions, a multicenter, prospective diagnostic study was launched and led by the Advanced Research Core (ARC) of the Concussion Assessment, Research, and Education (CARE) Consortium. The consortium is a joint effort of the National Collegiate Athletics Association (NCAA) and the U.S. Department of Defense.
From among the CARE ARC database, researchers evaluated 127 eligible student athletes who had experienced a sports-related concussion, underwent clinical testing and blood collection before and after their injuries, and returned to their sports. Their average age was 18.9 years old, 76% were men, and 65% were White. Biomarker levels were measured from nonfasting blood samples via ultrasensitive single molecule array technology. As current NCAA guidelines indicate that most athletes will be asymptomatic roughly 2 weeks after a concussion, the study used 14 days as a cutoff period.
Among the 127 athletes, the median return-to-sport time was 14 days; 65 returned to their sports in less than 14 days while 62 returned to their sports in 14 days or more. According to the study’s linear mixed models, athletes with a return-to-sport time of 14 days or longer had significantly higher total tau levels at 24-48 hours post injury (mean difference –0.51 pg/mL, 95% confidence interval, –0.88 to –0.14; P = .008) and when symptoms had resolved (mean difference –0.71 pg/mL, 95% CI, –1.09 to –0.34; P < .001) compared with athletes with a return-to-sport time of less than 14 days. Athletes who returned in 14 days or more also had comparatively lower levels of GFAP postinjury than did those who returned in under 14 days (4.39 pg/mL versus 4.72 pg/mL; P = .04).
Preliminary steps toward an appropriate point-of-care test
“This particular study is one of several emerging studies on what these biomarkers look like,” Brian W. Hainline, MD, chief medical officer of the NCAA, said in an interview. “It’s all still very preliminary – you couldn’t make policy changes based on what we have – but the data is accumulating. Ultimately, we should be able to perform a multivariate analysis of all the different objective biomarkers, looking at repetitive head impact exposure, looking at imaging, looking at these blood-based biomarkers. Then you can say, ‘OK, what can we do? Can we actually predict recovery, who is likely or less likely to do well?’ ”
“It’s not realistic to be taking blood samples all the time,” said Dr. Hainline, who was not involved in the study. “Another goal, once we know which biomarkers are valuable, is to convert to a point-of-care test. You get a finger prick or even a salivary test and we get the result immediately; that’s the direction that all of this is heading. But first, we have to lay out the groundwork. We envision a day, in the not too distant future, where we can get this information much more quickly.”
The authors acknowledged their study’s limitations, including an inability to standardize the time of biomarker collection and the fact that they analyzed a “relatively small number of athletes” who met their specific criteria. That said, they emphasized that their work is based on “the largest prospective sample of sports-related concussions in athletes to date” and that they “anticipate that we will be able to continue to gather a more representative sample” in the future to better generalize to the larger collegiate community.
The study was supported by the Grand Alliance Concussion Assessment, Research, and Education Consortium, which was funded in part by the NCAA and the Department of Defense. The authors disclosed receiving grants and travel reimbursements from – or working as advisers or consultants for – various organizations, college programs, and sports leagues.
SOURCE: Pattinson CL, et al. JAMA Netw Open. 2020 Aug 27. doi: 10.1001/jamanetworkopen.2020.13191.
, according to a new study of collegiate athletes and recovery time. “Although preliminary, the current results highlight the potential role of biomarkers in tracking neuronal recovery, which may be associated with duration of [return to sport],” wrote Cassandra L. Pattinson, PhD, of the University of Queensland, Brisbane, Australia, and the National Institutes of Health, Bethesda, Md., along with coauthors. The study was published in JAMA Network Open.
To determine if three specific blood biomarkers – total tau protein, glial fibrillary acidic protein (GFAP), and neurofilament light chain protein (NfL) – can help predict when athletes should return from sports-related concussions, a multicenter, prospective diagnostic study was launched and led by the Advanced Research Core (ARC) of the Concussion Assessment, Research, and Education (CARE) Consortium. The consortium is a joint effort of the National Collegiate Athletics Association (NCAA) and the U.S. Department of Defense.
From among the CARE ARC database, researchers evaluated 127 eligible student athletes who had experienced a sports-related concussion, underwent clinical testing and blood collection before and after their injuries, and returned to their sports. Their average age was 18.9 years old, 76% were men, and 65% were White. Biomarker levels were measured from nonfasting blood samples via ultrasensitive single molecule array technology. As current NCAA guidelines indicate that most athletes will be asymptomatic roughly 2 weeks after a concussion, the study used 14 days as a cutoff period.
Among the 127 athletes, the median return-to-sport time was 14 days; 65 returned to their sports in less than 14 days while 62 returned to their sports in 14 days or more. According to the study’s linear mixed models, athletes with a return-to-sport time of 14 days or longer had significantly higher total tau levels at 24-48 hours post injury (mean difference –0.51 pg/mL, 95% confidence interval, –0.88 to –0.14; P = .008) and when symptoms had resolved (mean difference –0.71 pg/mL, 95% CI, –1.09 to –0.34; P < .001) compared with athletes with a return-to-sport time of less than 14 days. Athletes who returned in 14 days or more also had comparatively lower levels of GFAP postinjury than did those who returned in under 14 days (4.39 pg/mL versus 4.72 pg/mL; P = .04).
Preliminary steps toward an appropriate point-of-care test
“This particular study is one of several emerging studies on what these biomarkers look like,” Brian W. Hainline, MD, chief medical officer of the NCAA, said in an interview. “It’s all still very preliminary – you couldn’t make policy changes based on what we have – but the data is accumulating. Ultimately, we should be able to perform a multivariate analysis of all the different objective biomarkers, looking at repetitive head impact exposure, looking at imaging, looking at these blood-based biomarkers. Then you can say, ‘OK, what can we do? Can we actually predict recovery, who is likely or less likely to do well?’ ”
“It’s not realistic to be taking blood samples all the time,” said Dr. Hainline, who was not involved in the study. “Another goal, once we know which biomarkers are valuable, is to convert to a point-of-care test. You get a finger prick or even a salivary test and we get the result immediately; that’s the direction that all of this is heading. But first, we have to lay out the groundwork. We envision a day, in the not too distant future, where we can get this information much more quickly.”
The authors acknowledged their study’s limitations, including an inability to standardize the time of biomarker collection and the fact that they analyzed a “relatively small number of athletes” who met their specific criteria. That said, they emphasized that their work is based on “the largest prospective sample of sports-related concussions in athletes to date” and that they “anticipate that we will be able to continue to gather a more representative sample” in the future to better generalize to the larger collegiate community.
The study was supported by the Grand Alliance Concussion Assessment, Research, and Education Consortium, which was funded in part by the NCAA and the Department of Defense. The authors disclosed receiving grants and travel reimbursements from – or working as advisers or consultants for – various organizations, college programs, and sports leagues.
SOURCE: Pattinson CL, et al. JAMA Netw Open. 2020 Aug 27. doi: 10.1001/jamanetworkopen.2020.13191.
, according to a new study of collegiate athletes and recovery time. “Although preliminary, the current results highlight the potential role of biomarkers in tracking neuronal recovery, which may be associated with duration of [return to sport],” wrote Cassandra L. Pattinson, PhD, of the University of Queensland, Brisbane, Australia, and the National Institutes of Health, Bethesda, Md., along with coauthors. The study was published in JAMA Network Open.
To determine if three specific blood biomarkers – total tau protein, glial fibrillary acidic protein (GFAP), and neurofilament light chain protein (NfL) – can help predict when athletes should return from sports-related concussions, a multicenter, prospective diagnostic study was launched and led by the Advanced Research Core (ARC) of the Concussion Assessment, Research, and Education (CARE) Consortium. The consortium is a joint effort of the National Collegiate Athletics Association (NCAA) and the U.S. Department of Defense.
From among the CARE ARC database, researchers evaluated 127 eligible student athletes who had experienced a sports-related concussion, underwent clinical testing and blood collection before and after their injuries, and returned to their sports. Their average age was 18.9 years old, 76% were men, and 65% were White. Biomarker levels were measured from nonfasting blood samples via ultrasensitive single molecule array technology. As current NCAA guidelines indicate that most athletes will be asymptomatic roughly 2 weeks after a concussion, the study used 14 days as a cutoff period.
Among the 127 athletes, the median return-to-sport time was 14 days; 65 returned to their sports in less than 14 days while 62 returned to their sports in 14 days or more. According to the study’s linear mixed models, athletes with a return-to-sport time of 14 days or longer had significantly higher total tau levels at 24-48 hours post injury (mean difference –0.51 pg/mL, 95% confidence interval, –0.88 to –0.14; P = .008) and when symptoms had resolved (mean difference –0.71 pg/mL, 95% CI, –1.09 to –0.34; P < .001) compared with athletes with a return-to-sport time of less than 14 days. Athletes who returned in 14 days or more also had comparatively lower levels of GFAP postinjury than did those who returned in under 14 days (4.39 pg/mL versus 4.72 pg/mL; P = .04).
Preliminary steps toward an appropriate point-of-care test
“This particular study is one of several emerging studies on what these biomarkers look like,” Brian W. Hainline, MD, chief medical officer of the NCAA, said in an interview. “It’s all still very preliminary – you couldn’t make policy changes based on what we have – but the data is accumulating. Ultimately, we should be able to perform a multivariate analysis of all the different objective biomarkers, looking at repetitive head impact exposure, looking at imaging, looking at these blood-based biomarkers. Then you can say, ‘OK, what can we do? Can we actually predict recovery, who is likely or less likely to do well?’ ”
“It’s not realistic to be taking blood samples all the time,” said Dr. Hainline, who was not involved in the study. “Another goal, once we know which biomarkers are valuable, is to convert to a point-of-care test. You get a finger prick or even a salivary test and we get the result immediately; that’s the direction that all of this is heading. But first, we have to lay out the groundwork. We envision a day, in the not too distant future, where we can get this information much more quickly.”
The authors acknowledged their study’s limitations, including an inability to standardize the time of biomarker collection and the fact that they analyzed a “relatively small number of athletes” who met their specific criteria. That said, they emphasized that their work is based on “the largest prospective sample of sports-related concussions in athletes to date” and that they “anticipate that we will be able to continue to gather a more representative sample” in the future to better generalize to the larger collegiate community.
The study was supported by the Grand Alliance Concussion Assessment, Research, and Education Consortium, which was funded in part by the NCAA and the Department of Defense. The authors disclosed receiving grants and travel reimbursements from – or working as advisers or consultants for – various organizations, college programs, and sports leagues.
SOURCE: Pattinson CL, et al. JAMA Netw Open. 2020 Aug 27. doi: 10.1001/jamanetworkopen.2020.13191.
FROM JAMA NETWORK OPEN