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Tic disorders are associated with obesity and diabetes
The movement disorders are associated with cardiometabolic problems “even after taking into account a number of covariates and shared familial confounders and excluding relevant psychiatric comorbidities,” the researchers wrote. “The results highlight the importance of carefully monitoring cardiometabolic health in patients with Tourette syndrome or chronic tic disorder across the lifespan, particularly in those with comorbid attention-deficit/hyperactivity disorder (ADHD).”
Gustaf Brander, a researcher in the department of clinical neuroscience at Karolinska Institutet in Stockholm, and his colleagues conducted a longitudinal population-based cohort study of individuals living in Sweden between Jan. 1, 1973, and Dec. 31, 2013. The researchers assessed outcomes for patients with previously validated diagnoses of Tourette syndrome or chronic tic disorder in the Swedish National Patient Register. Main outcomes included obesity, dyslipidemia, hypertension, T2DM, and cardiovascular diseases, including ischemic heart diseases, arrhythmia, cerebrovascular diseases, transient ischemic attack, and arteriosclerosis. In addition, the researchers identified families with full siblings discordant for Tourette syndrome or chronic tic disorder.
Of the more than 14 million individuals in the cohort, 7,804 (76.4% male; median age at first diagnosis, 13.3 years) had a diagnosis of Tourette syndrome or chronic tic disorder in specialist care. Furthermore, the cohort included 5,141 families with full siblings who were discordant for these disorders.
Individuals with Tourette syndrome or chronic tic disorder had a higher risk for any metabolic or cardiovascular disorder, compared with the general population (hazard ratio adjusted by sex and birth year [aHR], 1.99) and sibling controls (aHR, 1.37). Specifically, individuals with Tourette syndrome or chronic tic disorder had higher risks for obesity (aHR, 2.76), T2DM(aHR, 1.67), and circulatory system diseases (aHR, 1.76).
The increased risk of any cardiometabolic disorder was significantly greater for males than it was for females (aHRs, 2.13 vs. 1.79), as was the risk of obesity (aHRs, 3.24 vs. 1.97).
The increased risk for cardiometabolic disorders in this patient population was evident by age 8 years. Exclusion of those patients with comorbid ADHD reduced but did not eliminate the risk (aHR, 1.52). The exclusion of other comorbidities did not significantly affect the results. Among patients with Tourette syndrome or chronic tic disorder, those who had received antipsychotic treatment for more than 1 year were significantly less likely to have metabolic and cardiovascular disorders, compared with patients not taking antipsychotic medication. This association may be related to “greater medical vigilance” and “should not be taken as evidence that antipsychotics are free from cardiometabolic adverse effects,” the authors noted.
The study was supported by a research grant from Tourettes Action. In addition, authors reported support from the Swedish Research Council and a Karolinska Institutet PhD stipend. Two authors disclosed personal fees from publishers, and one author disclosed grants and other funding from Shire.
SOURCE: Brander G et al. JAMA Neurol. 2019 Jan 14. doi: 10.1001/jamaneurol.2018.4279.
The movement disorders are associated with cardiometabolic problems “even after taking into account a number of covariates and shared familial confounders and excluding relevant psychiatric comorbidities,” the researchers wrote. “The results highlight the importance of carefully monitoring cardiometabolic health in patients with Tourette syndrome or chronic tic disorder across the lifespan, particularly in those with comorbid attention-deficit/hyperactivity disorder (ADHD).”
Gustaf Brander, a researcher in the department of clinical neuroscience at Karolinska Institutet in Stockholm, and his colleagues conducted a longitudinal population-based cohort study of individuals living in Sweden between Jan. 1, 1973, and Dec. 31, 2013. The researchers assessed outcomes for patients with previously validated diagnoses of Tourette syndrome or chronic tic disorder in the Swedish National Patient Register. Main outcomes included obesity, dyslipidemia, hypertension, T2DM, and cardiovascular diseases, including ischemic heart diseases, arrhythmia, cerebrovascular diseases, transient ischemic attack, and arteriosclerosis. In addition, the researchers identified families with full siblings discordant for Tourette syndrome or chronic tic disorder.
Of the more than 14 million individuals in the cohort, 7,804 (76.4% male; median age at first diagnosis, 13.3 years) had a diagnosis of Tourette syndrome or chronic tic disorder in specialist care. Furthermore, the cohort included 5,141 families with full siblings who were discordant for these disorders.
Individuals with Tourette syndrome or chronic tic disorder had a higher risk for any metabolic or cardiovascular disorder, compared with the general population (hazard ratio adjusted by sex and birth year [aHR], 1.99) and sibling controls (aHR, 1.37). Specifically, individuals with Tourette syndrome or chronic tic disorder had higher risks for obesity (aHR, 2.76), T2DM(aHR, 1.67), and circulatory system diseases (aHR, 1.76).
The increased risk of any cardiometabolic disorder was significantly greater for males than it was for females (aHRs, 2.13 vs. 1.79), as was the risk of obesity (aHRs, 3.24 vs. 1.97).
The increased risk for cardiometabolic disorders in this patient population was evident by age 8 years. Exclusion of those patients with comorbid ADHD reduced but did not eliminate the risk (aHR, 1.52). The exclusion of other comorbidities did not significantly affect the results. Among patients with Tourette syndrome or chronic tic disorder, those who had received antipsychotic treatment for more than 1 year were significantly less likely to have metabolic and cardiovascular disorders, compared with patients not taking antipsychotic medication. This association may be related to “greater medical vigilance” and “should not be taken as evidence that antipsychotics are free from cardiometabolic adverse effects,” the authors noted.
The study was supported by a research grant from Tourettes Action. In addition, authors reported support from the Swedish Research Council and a Karolinska Institutet PhD stipend. Two authors disclosed personal fees from publishers, and one author disclosed grants and other funding from Shire.
SOURCE: Brander G et al. JAMA Neurol. 2019 Jan 14. doi: 10.1001/jamaneurol.2018.4279.
The movement disorders are associated with cardiometabolic problems “even after taking into account a number of covariates and shared familial confounders and excluding relevant psychiatric comorbidities,” the researchers wrote. “The results highlight the importance of carefully monitoring cardiometabolic health in patients with Tourette syndrome or chronic tic disorder across the lifespan, particularly in those with comorbid attention-deficit/hyperactivity disorder (ADHD).”
Gustaf Brander, a researcher in the department of clinical neuroscience at Karolinska Institutet in Stockholm, and his colleagues conducted a longitudinal population-based cohort study of individuals living in Sweden between Jan. 1, 1973, and Dec. 31, 2013. The researchers assessed outcomes for patients with previously validated diagnoses of Tourette syndrome or chronic tic disorder in the Swedish National Patient Register. Main outcomes included obesity, dyslipidemia, hypertension, T2DM, and cardiovascular diseases, including ischemic heart diseases, arrhythmia, cerebrovascular diseases, transient ischemic attack, and arteriosclerosis. In addition, the researchers identified families with full siblings discordant for Tourette syndrome or chronic tic disorder.
Of the more than 14 million individuals in the cohort, 7,804 (76.4% male; median age at first diagnosis, 13.3 years) had a diagnosis of Tourette syndrome or chronic tic disorder in specialist care. Furthermore, the cohort included 5,141 families with full siblings who were discordant for these disorders.
Individuals with Tourette syndrome or chronic tic disorder had a higher risk for any metabolic or cardiovascular disorder, compared with the general population (hazard ratio adjusted by sex and birth year [aHR], 1.99) and sibling controls (aHR, 1.37). Specifically, individuals with Tourette syndrome or chronic tic disorder had higher risks for obesity (aHR, 2.76), T2DM(aHR, 1.67), and circulatory system diseases (aHR, 1.76).
The increased risk of any cardiometabolic disorder was significantly greater for males than it was for females (aHRs, 2.13 vs. 1.79), as was the risk of obesity (aHRs, 3.24 vs. 1.97).
The increased risk for cardiometabolic disorders in this patient population was evident by age 8 years. Exclusion of those patients with comorbid ADHD reduced but did not eliminate the risk (aHR, 1.52). The exclusion of other comorbidities did not significantly affect the results. Among patients with Tourette syndrome or chronic tic disorder, those who had received antipsychotic treatment for more than 1 year were significantly less likely to have metabolic and cardiovascular disorders, compared with patients not taking antipsychotic medication. This association may be related to “greater medical vigilance” and “should not be taken as evidence that antipsychotics are free from cardiometabolic adverse effects,” the authors noted.
The study was supported by a research grant from Tourettes Action. In addition, authors reported support from the Swedish Research Council and a Karolinska Institutet PhD stipend. Two authors disclosed personal fees from publishers, and one author disclosed grants and other funding from Shire.
SOURCE: Brander G et al. JAMA Neurol. 2019 Jan 14. doi: 10.1001/jamaneurol.2018.4279.
FROM JAMA NEUROLOGY
Key clinical point: Monitor cardiometabolic health in patients with Tourette syndrome or chronic tic disorder.
Major finding: Patients with Tourette syndrome or chronic tic disorder have a higher risk of metabolic or cardiovascular disorders, compared with the general population (adjusted hazard ratio, 1.99) and sibling controls (adjusted hazard ratio, 1.37).
Study details: A Swedish longitudinal, population-based cohort study of 7,804 individuals with Tourette syndrome or chronic tic disorder.
Disclosures: The study was supported by a research grant from Tourettes Action. Authors reported support from the Swedish Research Council and a Karolinska Institutet PhD stipend. Two authors disclosed personal fees from publishers, and one author disclosed grants and other funding from Shire.
Source: Brander G et al. JAMA Neurol. 2019 Jan 14. doi: 10.1001/jamaneurol.2018.4279.
As deep sleep decreases, Alzheimer’s pathology – particularly tau – increases
The protein was evident in areas associated with memory consolidation, typically affected in Alzheimer’s disease: the entorhinal, parahippocampal, inferior parietal, insula, isthmus cingulate, lingual, supramarginal, and orbitofrontal regions.
Because the findings were observed in a population of cognitively normal and minimally impaired subjects, they suggest a role for sleep studies in assessing the risk for cognitive decline and Alzheimer’s disease, and in monitoring patients with the disease, reported Brendan P. Lucey, MD, and his colleagues. The report is in Science and Translational Medicine (Sci Transl Med. 2019 Jan 9;11:eaau6550).
“With the rising incidence of Alzheimer’s disease in an aging population, our findings have potential application in both clinical trials and patient screening for Alzheimer’s disease to noninvasively monitor for progression of Alzheimer’s disease pathology,” wrote Dr. Lucey, director of the Sleep Medicine Center and assistant professor of neurology at Washington University in St. Louis. “For instance, periodically measuring non-REM slow wave activity, in conjunction with other biomarkers, may have utility for monitoring Alzheimer’s disease risk or response to an Alzheimer’s disease treatment.”
Dr. Lucey and his colleagues examined sleep architecture and tau and amyloid deposition in 119 subjects enrolled in longitudinal aging studies. For 6 nights, subjects slept with a single-channel EEG monitor on. They also underwent cognitive testing and genotyping for Alzheimer’s disease risk factors.
Subjects were a mean of 74 years old. Almost 80% had normal cognition as measured by the Clinical Dementia Rating Scale (CDR); the remainder had very mild cognitive impairment (CDR 0.5)
Among those with positive biomarker findings, sleep architecture was altered in several ways: lower REM latency, lower wake after sleep onset, prolonged sleep-onset latency, and longer self-reported total sleep time. The differences were evident in those with normal cognition, but even more pronounced in those with mild cognitive impairment. Despite the longer sleep times, however, sleep efficiency was decreased.
Decreased non-REM slow wave activity was associated with increased tau deposition. The protein was largely concentrated in areas of typical Alzheimer’s disease pathology (entorhinal, parahippocampal, orbital frontal, precuneus, inferior parietal, and inferior temporal regions). There were no significant associations between non-REM slow wave activity and amyloid deposits.
Other sleep parameters, however, were associated with amyloid, including REM latency and sleep latency, “suggesting that as amyloid-beta deposition increased, the time to fall asleep and enter REM sleep decreased,” the investigators said.
Those with tau pathology also slept longer, reporting more daytime naps. “This suggests that participants with greater tau pathology experienced daytime sleepiness despite increased total sleep time.”
“These results, coupled with the non-REM slow wave activity findings, suggest that the quality of sleep decreases with increasing tau despite increased sleep time.” Questions about napping should probably be included in dementia screening discussions, they said.
The study was largely funded by the National Institutes of Health. Dr. Lucey had no financial conflicts.
SOURCE: Lucey BP et al. Sci Transl Med 2019 Jan 9;11:eaau6550.
The protein was evident in areas associated with memory consolidation, typically affected in Alzheimer’s disease: the entorhinal, parahippocampal, inferior parietal, insula, isthmus cingulate, lingual, supramarginal, and orbitofrontal regions.
Because the findings were observed in a population of cognitively normal and minimally impaired subjects, they suggest a role for sleep studies in assessing the risk for cognitive decline and Alzheimer’s disease, and in monitoring patients with the disease, reported Brendan P. Lucey, MD, and his colleagues. The report is in Science and Translational Medicine (Sci Transl Med. 2019 Jan 9;11:eaau6550).
“With the rising incidence of Alzheimer’s disease in an aging population, our findings have potential application in both clinical trials and patient screening for Alzheimer’s disease to noninvasively monitor for progression of Alzheimer’s disease pathology,” wrote Dr. Lucey, director of the Sleep Medicine Center and assistant professor of neurology at Washington University in St. Louis. “For instance, periodically measuring non-REM slow wave activity, in conjunction with other biomarkers, may have utility for monitoring Alzheimer’s disease risk or response to an Alzheimer’s disease treatment.”
Dr. Lucey and his colleagues examined sleep architecture and tau and amyloid deposition in 119 subjects enrolled in longitudinal aging studies. For 6 nights, subjects slept with a single-channel EEG monitor on. They also underwent cognitive testing and genotyping for Alzheimer’s disease risk factors.
Subjects were a mean of 74 years old. Almost 80% had normal cognition as measured by the Clinical Dementia Rating Scale (CDR); the remainder had very mild cognitive impairment (CDR 0.5)
Among those with positive biomarker findings, sleep architecture was altered in several ways: lower REM latency, lower wake after sleep onset, prolonged sleep-onset latency, and longer self-reported total sleep time. The differences were evident in those with normal cognition, but even more pronounced in those with mild cognitive impairment. Despite the longer sleep times, however, sleep efficiency was decreased.
Decreased non-REM slow wave activity was associated with increased tau deposition. The protein was largely concentrated in areas of typical Alzheimer’s disease pathology (entorhinal, parahippocampal, orbital frontal, precuneus, inferior parietal, and inferior temporal regions). There were no significant associations between non-REM slow wave activity and amyloid deposits.
Other sleep parameters, however, were associated with amyloid, including REM latency and sleep latency, “suggesting that as amyloid-beta deposition increased, the time to fall asleep and enter REM sleep decreased,” the investigators said.
Those with tau pathology also slept longer, reporting more daytime naps. “This suggests that participants with greater tau pathology experienced daytime sleepiness despite increased total sleep time.”
“These results, coupled with the non-REM slow wave activity findings, suggest that the quality of sleep decreases with increasing tau despite increased sleep time.” Questions about napping should probably be included in dementia screening discussions, they said.
The study was largely funded by the National Institutes of Health. Dr. Lucey had no financial conflicts.
SOURCE: Lucey BP et al. Sci Transl Med 2019 Jan 9;11:eaau6550.
The protein was evident in areas associated with memory consolidation, typically affected in Alzheimer’s disease: the entorhinal, parahippocampal, inferior parietal, insula, isthmus cingulate, lingual, supramarginal, and orbitofrontal regions.
Because the findings were observed in a population of cognitively normal and minimally impaired subjects, they suggest a role for sleep studies in assessing the risk for cognitive decline and Alzheimer’s disease, and in monitoring patients with the disease, reported Brendan P. Lucey, MD, and his colleagues. The report is in Science and Translational Medicine (Sci Transl Med. 2019 Jan 9;11:eaau6550).
“With the rising incidence of Alzheimer’s disease in an aging population, our findings have potential application in both clinical trials and patient screening for Alzheimer’s disease to noninvasively monitor for progression of Alzheimer’s disease pathology,” wrote Dr. Lucey, director of the Sleep Medicine Center and assistant professor of neurology at Washington University in St. Louis. “For instance, periodically measuring non-REM slow wave activity, in conjunction with other biomarkers, may have utility for monitoring Alzheimer’s disease risk or response to an Alzheimer’s disease treatment.”
Dr. Lucey and his colleagues examined sleep architecture and tau and amyloid deposition in 119 subjects enrolled in longitudinal aging studies. For 6 nights, subjects slept with a single-channel EEG monitor on. They also underwent cognitive testing and genotyping for Alzheimer’s disease risk factors.
Subjects were a mean of 74 years old. Almost 80% had normal cognition as measured by the Clinical Dementia Rating Scale (CDR); the remainder had very mild cognitive impairment (CDR 0.5)
Among those with positive biomarker findings, sleep architecture was altered in several ways: lower REM latency, lower wake after sleep onset, prolonged sleep-onset latency, and longer self-reported total sleep time. The differences were evident in those with normal cognition, but even more pronounced in those with mild cognitive impairment. Despite the longer sleep times, however, sleep efficiency was decreased.
Decreased non-REM slow wave activity was associated with increased tau deposition. The protein was largely concentrated in areas of typical Alzheimer’s disease pathology (entorhinal, parahippocampal, orbital frontal, precuneus, inferior parietal, and inferior temporal regions). There were no significant associations between non-REM slow wave activity and amyloid deposits.
Other sleep parameters, however, were associated with amyloid, including REM latency and sleep latency, “suggesting that as amyloid-beta deposition increased, the time to fall asleep and enter REM sleep decreased,” the investigators said.
Those with tau pathology also slept longer, reporting more daytime naps. “This suggests that participants with greater tau pathology experienced daytime sleepiness despite increased total sleep time.”
“These results, coupled with the non-REM slow wave activity findings, suggest that the quality of sleep decreases with increasing tau despite increased sleep time.” Questions about napping should probably be included in dementia screening discussions, they said.
The study was largely funded by the National Institutes of Health. Dr. Lucey had no financial conflicts.
SOURCE: Lucey BP et al. Sci Transl Med 2019 Jan 9;11:eaau6550.
FROM SCIENCE TRANSLATIONAL MEDICINE
Key clinical point: Cognitively normal subjects with tau deposition experience altered sleep patterns.
Major finding: Decreased time in non-REM deep sleep was associated with increased tau pathology in Alzheimer’s-affected brain regions and in cerebrospinal fluid.
Study details: The prospective longitudinal study comprised 119 subjects.
Disclosures: The authors reported no relevant financial disclosures.
Source: Lucey BP et al. Sci Transl Med. 2019 Jan 9;11:eaau6550.
Alcohol use, psychological distress associated with possible RBD
(RBD), according to a population-based cohort study published in Neurology. In addition, the results also replicate previous findings of an association between possible RBD and smoking, low education, and male sex.
The risk factors for RBD have been studied comparatively little. “While much is still unknown about RBD, it can be caused by medications or it may be an early sign of another neurologic condition like Parkinson’s disease, dementia with Lewy bodies, or multiple system atrophy,” according to Ronald B. Postuma, MD, an associate professor at McGill University, Montreal. “Identifying lifestyle and personal risk factors linked to this sleep disorder may lead to finding ways to reduce the chances of developing it.”
To assess sociodemographic, socioeconomic, and clinical correlates of possible RBD, Dr. Postuma and his colleagues examined baseline data collected between 2012 and 2015 in the Canadian Longitudinal Study on Aging (CLSA), which included 30,097 participants. To screen for possible RBD, the CLSA researchers asked patients, “Have you ever been told, or suspected yourself, that you seem to ‘act out your dreams’ while asleep [e.g., punching, flailing your arms in the air, making running movements, etc.]?” Participants answered additional questions to rule out RBD mimics. Patients with symptom onset before age 20 years, positive apnea screen, or a diagnosis of dementia, Alzheimer’s disease, parkinsonism, or Parkinson’s disease were excluded from analysis.
In all, 3,271 participants screened positive for possible RBD. After the investigators excluded participants with potential mimics, 958 patients (about 3.2% of the total population) remained in the analysis. Approximately 59% of patients with possible RBD were male, compared with 42% of controls. Patients with possible RBD were more likely to be married, in a common-law relationship, or widowed.
Participants with possible RBD had slightly less education (estimated mean, 13.2 years vs. 13.6 years) and lower income, compared with controls. Participants with possible RBD retired at a slightly younger age (57.5 years vs. 58.6 years) and were more likely to have retired because of health concerns (28.9% vs. 22.0%), compared with controls.
In addition, patients with possible RBD were more likely to drink more and to be moderate to heavy drinkers than controls; they were also more likely to be current or past smokers. Antidepressant use was more frequent and psychological distress was greater among participants with possible RBD.
When the investigators performed a multivariable logistic regression analysis, the associations between possible RBD and male sex and relationship status remained. Lower educational level, but not income level, also remained associated with possible RBD. Furthermore, retirement age and having reported retirement because of health concerns remained significantly associated with possible RBD, as did the amount of alcohol consumed weekly and moderate to heavy drinking. Sensitivity analyses did not change the results significantly.
One of the study’s limitations is its reliance on self-report to identify participants with possible RBD, the authors wrote. The prevalence of possible RBD in the study was 3.2%, but research using polysomnography has found a prevalence of about 1%. Thus, the majority of cases in this study may have other disorders such as restless legs syndrome or periodic limb movements. Furthermore, many participants who enact their dreams (such as unmarried people) are likely unaware of it. Finally, the researchers did not measure several variables of interest, such as consumption of caffeinated products.
“The main advantages of our current study are the large sample size; the systematic population-based sampling; the capacity to adjust for diverse potential confounding variables, including mental illness; and the ability to screen out RBD mimics,” the authors concluded.
SOURCE: Postuma RB et al. Neurology. 2018 Dec 26. doi: 10.1212/WNL.0000000000006849.
(RBD), according to a population-based cohort study published in Neurology. In addition, the results also replicate previous findings of an association between possible RBD and smoking, low education, and male sex.
The risk factors for RBD have been studied comparatively little. “While much is still unknown about RBD, it can be caused by medications or it may be an early sign of another neurologic condition like Parkinson’s disease, dementia with Lewy bodies, or multiple system atrophy,” according to Ronald B. Postuma, MD, an associate professor at McGill University, Montreal. “Identifying lifestyle and personal risk factors linked to this sleep disorder may lead to finding ways to reduce the chances of developing it.”
To assess sociodemographic, socioeconomic, and clinical correlates of possible RBD, Dr. Postuma and his colleagues examined baseline data collected between 2012 and 2015 in the Canadian Longitudinal Study on Aging (CLSA), which included 30,097 participants. To screen for possible RBD, the CLSA researchers asked patients, “Have you ever been told, or suspected yourself, that you seem to ‘act out your dreams’ while asleep [e.g., punching, flailing your arms in the air, making running movements, etc.]?” Participants answered additional questions to rule out RBD mimics. Patients with symptom onset before age 20 years, positive apnea screen, or a diagnosis of dementia, Alzheimer’s disease, parkinsonism, or Parkinson’s disease were excluded from analysis.
In all, 3,271 participants screened positive for possible RBD. After the investigators excluded participants with potential mimics, 958 patients (about 3.2% of the total population) remained in the analysis. Approximately 59% of patients with possible RBD were male, compared with 42% of controls. Patients with possible RBD were more likely to be married, in a common-law relationship, or widowed.
Participants with possible RBD had slightly less education (estimated mean, 13.2 years vs. 13.6 years) and lower income, compared with controls. Participants with possible RBD retired at a slightly younger age (57.5 years vs. 58.6 years) and were more likely to have retired because of health concerns (28.9% vs. 22.0%), compared with controls.
In addition, patients with possible RBD were more likely to drink more and to be moderate to heavy drinkers than controls; they were also more likely to be current or past smokers. Antidepressant use was more frequent and psychological distress was greater among participants with possible RBD.
When the investigators performed a multivariable logistic regression analysis, the associations between possible RBD and male sex and relationship status remained. Lower educational level, but not income level, also remained associated with possible RBD. Furthermore, retirement age and having reported retirement because of health concerns remained significantly associated with possible RBD, as did the amount of alcohol consumed weekly and moderate to heavy drinking. Sensitivity analyses did not change the results significantly.
One of the study’s limitations is its reliance on self-report to identify participants with possible RBD, the authors wrote. The prevalence of possible RBD in the study was 3.2%, but research using polysomnography has found a prevalence of about 1%. Thus, the majority of cases in this study may have other disorders such as restless legs syndrome or periodic limb movements. Furthermore, many participants who enact their dreams (such as unmarried people) are likely unaware of it. Finally, the researchers did not measure several variables of interest, such as consumption of caffeinated products.
“The main advantages of our current study are the large sample size; the systematic population-based sampling; the capacity to adjust for diverse potential confounding variables, including mental illness; and the ability to screen out RBD mimics,” the authors concluded.
SOURCE: Postuma RB et al. Neurology. 2018 Dec 26. doi: 10.1212/WNL.0000000000006849.
(RBD), according to a population-based cohort study published in Neurology. In addition, the results also replicate previous findings of an association between possible RBD and smoking, low education, and male sex.
The risk factors for RBD have been studied comparatively little. “While much is still unknown about RBD, it can be caused by medications or it may be an early sign of another neurologic condition like Parkinson’s disease, dementia with Lewy bodies, or multiple system atrophy,” according to Ronald B. Postuma, MD, an associate professor at McGill University, Montreal. “Identifying lifestyle and personal risk factors linked to this sleep disorder may lead to finding ways to reduce the chances of developing it.”
To assess sociodemographic, socioeconomic, and clinical correlates of possible RBD, Dr. Postuma and his colleagues examined baseline data collected between 2012 and 2015 in the Canadian Longitudinal Study on Aging (CLSA), which included 30,097 participants. To screen for possible RBD, the CLSA researchers asked patients, “Have you ever been told, or suspected yourself, that you seem to ‘act out your dreams’ while asleep [e.g., punching, flailing your arms in the air, making running movements, etc.]?” Participants answered additional questions to rule out RBD mimics. Patients with symptom onset before age 20 years, positive apnea screen, or a diagnosis of dementia, Alzheimer’s disease, parkinsonism, or Parkinson’s disease were excluded from analysis.
In all, 3,271 participants screened positive for possible RBD. After the investigators excluded participants with potential mimics, 958 patients (about 3.2% of the total population) remained in the analysis. Approximately 59% of patients with possible RBD were male, compared with 42% of controls. Patients with possible RBD were more likely to be married, in a common-law relationship, or widowed.
Participants with possible RBD had slightly less education (estimated mean, 13.2 years vs. 13.6 years) and lower income, compared with controls. Participants with possible RBD retired at a slightly younger age (57.5 years vs. 58.6 years) and were more likely to have retired because of health concerns (28.9% vs. 22.0%), compared with controls.
In addition, patients with possible RBD were more likely to drink more and to be moderate to heavy drinkers than controls; they were also more likely to be current or past smokers. Antidepressant use was more frequent and psychological distress was greater among participants with possible RBD.
When the investigators performed a multivariable logistic regression analysis, the associations between possible RBD and male sex and relationship status remained. Lower educational level, but not income level, also remained associated with possible RBD. Furthermore, retirement age and having reported retirement because of health concerns remained significantly associated with possible RBD, as did the amount of alcohol consumed weekly and moderate to heavy drinking. Sensitivity analyses did not change the results significantly.
One of the study’s limitations is its reliance on self-report to identify participants with possible RBD, the authors wrote. The prevalence of possible RBD in the study was 3.2%, but research using polysomnography has found a prevalence of about 1%. Thus, the majority of cases in this study may have other disorders such as restless legs syndrome or periodic limb movements. Furthermore, many participants who enact their dreams (such as unmarried people) are likely unaware of it. Finally, the researchers did not measure several variables of interest, such as consumption of caffeinated products.
“The main advantages of our current study are the large sample size; the systematic population-based sampling; the capacity to adjust for diverse potential confounding variables, including mental illness; and the ability to screen out RBD mimics,” the authors concluded.
SOURCE: Postuma RB et al. Neurology. 2018 Dec 26. doi: 10.1212/WNL.0000000000006849.
FROM NEUROLOGY
Key clinical point: Alcohol use and psychological distress are associated with possible REM sleep behavior disorder.
Major finding: A self-report questionnaire yielded a 3.2% prevalence of possible REM sleep behavior disorder.
Study details: A prospective, population-based cohort study of 30,097 participants.
Disclosures: The Canadian government provided funding for the research.
Source: Postuma RB et al. Neurology. 2018 Dec 26. doi: 10.1212/WNL.0000000000006849.
Daclizumab beta may be superior to interferon beta on MS disability progression
(MS), according to research published in the December 2018 issue of the Multiple Sclerosis Journal. The benefits are observed in the overall patient population, as well as in subgroups of patients based on demographic and disease characteristics.
Biogen and AbbVie, the manufacturers of daclizumab beta, voluntarily removed the therapy from the market in March 2018 because of safety concerns that included reports of severe liver damage and conditions associated with the immune system.
The phase 3 DECIDE study (NCT01064401) compared the safety and efficacy of subcutaneous daclizumab beta (150 mg) every 4 weeks with those of intramuscular interferon beta-1a (30 mcg) once weekly in patients with relapsing-remitting MS. Daclizumab beta reduced the risk of 24-week confirmed disability progression as assessed by the Expanded Disability Status Scale (EDSS) by 27%, compared with interferon beta-1a. Daclizumab beta also was associated with a greater median change from baseline to week 96 in MS Functional Composite (MSFC) score and a 24% reduction in the risk of clinically meaningful worsening on the physical impact subscale of the patient-reported 29-Item MS Impact Scale (MSIS-29 PHYS).
To shed light on the treatment’s effects in various demographic groups and in patients with specific clinical characteristics, Stanley L. Cohan, MD, PhD, medical director of Providence MS Center in Portland, Ore., and colleagues conducted a post hoc analysis of DECIDE data to examine the treatment effects of daclizumab beta and interferon beta-1a on patient disability or impairment in specific patient subgroups. The investigators examined results according to demographic characteristics, such as age (that is, 35 years or younger and older than 35 years) and sex. They also examined results in subgroups with the following baseline disease characteristics: disability (as defined by EDSS score), relapses in the previous 12 months, disease duration, presence of gadolinium enhancing lesions, T2 hyperintense lesion volume, disease activity, prior use of disease-modifying treatment, and prior use of interferon beta.
Dr. Cohan and colleagues focused on the following three outcome measures: 24-week confirmed disability progression (as measured by EDSS), 24-week sustained worsening on the MSFC, and the proportion of patients with clinically meaningful worsening in MSIS-29 PHYS at week 96. The researchers defined 24-week confirmed disability progression as an increase in the EDSS score of one or more points from a baseline score of 1 or higher or 1.5 points or more from a baseline score of 0 as confirmed after 24 weeks. They defined 24-week sustained worsening on the MSFC as worsening of 20% or more on the Timed 25-Foot Walk, worsening of 20% or more on Nine-Hole Peg Test, or a decrease of four or more points on the Symbol Digit Modalities Test sustained for 24 weeks.
Of the 1,841 patients enrolled in DECIDE, 922 were randomized to interferon beta-1a, and 919 were randomized to daclizumab beta. The treatment groups were well balanced in terms of demographic characteristics. Patients’ mean age was approximately 36 years, 68% of participants were female, and 90% of patients were white. Mean time since diagnosis at baseline was about 4 years, mean number of relapses in the previous year was 1.6, and mean baseline EDSS score was 2.5.
Daclizumab beta was associated with a lower risk of 24-week confirmed disability progression, compared with interferon beta-1a, in all subgroups. Patients aged 35 years or younger had the greatest risk reduction.
The proportion of patients who had 24-week sustained worsening on the MSFC at week 96 was 24% for daclizumab beta and 28% for interferon beta-1a. In the whole study population, daclizumab beta reduced the risk of this outcome by 20%, compared with interferon beta-1a. Daclizumab beta resulted in improved outcomes among all subgroups, compared with interferon beta-1a.
In addition, daclizumab beta reduced the risk of a clinically meaningful worsening of MSIS-29 PHYS at week 96 by 24%, compared with interferon beta-1a. The investigators observed trends favoring daclizumab beta in all subgroups.
“These analyses should be interpreted as exploratory and hypothesis-generating for future studies,” said Dr. Cohan and colleagues. They observed that some of the subgroups analyzed had small sample sizes and that no adjustments were made for multiple testing. Nevertheless, the results suggest that daclizumab beta has superior efficacy, compared with interferon beta-1a, regardless of patients’ demographic and disease characteristics, they concluded.
Biogen and AbbVie Biotherapeutics supported the study.
SOURCE: Cohan S et al. Mult Scler J. 2018. doi: 10.1177/1352458517735190.
This article was updated on 3/22/19.
(MS), according to research published in the December 2018 issue of the Multiple Sclerosis Journal. The benefits are observed in the overall patient population, as well as in subgroups of patients based on demographic and disease characteristics.
Biogen and AbbVie, the manufacturers of daclizumab beta, voluntarily removed the therapy from the market in March 2018 because of safety concerns that included reports of severe liver damage and conditions associated with the immune system.
The phase 3 DECIDE study (NCT01064401) compared the safety and efficacy of subcutaneous daclizumab beta (150 mg) every 4 weeks with those of intramuscular interferon beta-1a (30 mcg) once weekly in patients with relapsing-remitting MS. Daclizumab beta reduced the risk of 24-week confirmed disability progression as assessed by the Expanded Disability Status Scale (EDSS) by 27%, compared with interferon beta-1a. Daclizumab beta also was associated with a greater median change from baseline to week 96 in MS Functional Composite (MSFC) score and a 24% reduction in the risk of clinically meaningful worsening on the physical impact subscale of the patient-reported 29-Item MS Impact Scale (MSIS-29 PHYS).
To shed light on the treatment’s effects in various demographic groups and in patients with specific clinical characteristics, Stanley L. Cohan, MD, PhD, medical director of Providence MS Center in Portland, Ore., and colleagues conducted a post hoc analysis of DECIDE data to examine the treatment effects of daclizumab beta and interferon beta-1a on patient disability or impairment in specific patient subgroups. The investigators examined results according to demographic characteristics, such as age (that is, 35 years or younger and older than 35 years) and sex. They also examined results in subgroups with the following baseline disease characteristics: disability (as defined by EDSS score), relapses in the previous 12 months, disease duration, presence of gadolinium enhancing lesions, T2 hyperintense lesion volume, disease activity, prior use of disease-modifying treatment, and prior use of interferon beta.
Dr. Cohan and colleagues focused on the following three outcome measures: 24-week confirmed disability progression (as measured by EDSS), 24-week sustained worsening on the MSFC, and the proportion of patients with clinically meaningful worsening in MSIS-29 PHYS at week 96. The researchers defined 24-week confirmed disability progression as an increase in the EDSS score of one or more points from a baseline score of 1 or higher or 1.5 points or more from a baseline score of 0 as confirmed after 24 weeks. They defined 24-week sustained worsening on the MSFC as worsening of 20% or more on the Timed 25-Foot Walk, worsening of 20% or more on Nine-Hole Peg Test, or a decrease of four or more points on the Symbol Digit Modalities Test sustained for 24 weeks.
Of the 1,841 patients enrolled in DECIDE, 922 were randomized to interferon beta-1a, and 919 were randomized to daclizumab beta. The treatment groups were well balanced in terms of demographic characteristics. Patients’ mean age was approximately 36 years, 68% of participants were female, and 90% of patients were white. Mean time since diagnosis at baseline was about 4 years, mean number of relapses in the previous year was 1.6, and mean baseline EDSS score was 2.5.
Daclizumab beta was associated with a lower risk of 24-week confirmed disability progression, compared with interferon beta-1a, in all subgroups. Patients aged 35 years or younger had the greatest risk reduction.
The proportion of patients who had 24-week sustained worsening on the MSFC at week 96 was 24% for daclizumab beta and 28% for interferon beta-1a. In the whole study population, daclizumab beta reduced the risk of this outcome by 20%, compared with interferon beta-1a. Daclizumab beta resulted in improved outcomes among all subgroups, compared with interferon beta-1a.
In addition, daclizumab beta reduced the risk of a clinically meaningful worsening of MSIS-29 PHYS at week 96 by 24%, compared with interferon beta-1a. The investigators observed trends favoring daclizumab beta in all subgroups.
“These analyses should be interpreted as exploratory and hypothesis-generating for future studies,” said Dr. Cohan and colleagues. They observed that some of the subgroups analyzed had small sample sizes and that no adjustments were made for multiple testing. Nevertheless, the results suggest that daclizumab beta has superior efficacy, compared with interferon beta-1a, regardless of patients’ demographic and disease characteristics, they concluded.
Biogen and AbbVie Biotherapeutics supported the study.
SOURCE: Cohan S et al. Mult Scler J. 2018. doi: 10.1177/1352458517735190.
This article was updated on 3/22/19.
(MS), according to research published in the December 2018 issue of the Multiple Sclerosis Journal. The benefits are observed in the overall patient population, as well as in subgroups of patients based on demographic and disease characteristics.
Biogen and AbbVie, the manufacturers of daclizumab beta, voluntarily removed the therapy from the market in March 2018 because of safety concerns that included reports of severe liver damage and conditions associated with the immune system.
The phase 3 DECIDE study (NCT01064401) compared the safety and efficacy of subcutaneous daclizumab beta (150 mg) every 4 weeks with those of intramuscular interferon beta-1a (30 mcg) once weekly in patients with relapsing-remitting MS. Daclizumab beta reduced the risk of 24-week confirmed disability progression as assessed by the Expanded Disability Status Scale (EDSS) by 27%, compared with interferon beta-1a. Daclizumab beta also was associated with a greater median change from baseline to week 96 in MS Functional Composite (MSFC) score and a 24% reduction in the risk of clinically meaningful worsening on the physical impact subscale of the patient-reported 29-Item MS Impact Scale (MSIS-29 PHYS).
To shed light on the treatment’s effects in various demographic groups and in patients with specific clinical characteristics, Stanley L. Cohan, MD, PhD, medical director of Providence MS Center in Portland, Ore., and colleagues conducted a post hoc analysis of DECIDE data to examine the treatment effects of daclizumab beta and interferon beta-1a on patient disability or impairment in specific patient subgroups. The investigators examined results according to demographic characteristics, such as age (that is, 35 years or younger and older than 35 years) and sex. They also examined results in subgroups with the following baseline disease characteristics: disability (as defined by EDSS score), relapses in the previous 12 months, disease duration, presence of gadolinium enhancing lesions, T2 hyperintense lesion volume, disease activity, prior use of disease-modifying treatment, and prior use of interferon beta.
Dr. Cohan and colleagues focused on the following three outcome measures: 24-week confirmed disability progression (as measured by EDSS), 24-week sustained worsening on the MSFC, and the proportion of patients with clinically meaningful worsening in MSIS-29 PHYS at week 96. The researchers defined 24-week confirmed disability progression as an increase in the EDSS score of one or more points from a baseline score of 1 or higher or 1.5 points or more from a baseline score of 0 as confirmed after 24 weeks. They defined 24-week sustained worsening on the MSFC as worsening of 20% or more on the Timed 25-Foot Walk, worsening of 20% or more on Nine-Hole Peg Test, or a decrease of four or more points on the Symbol Digit Modalities Test sustained for 24 weeks.
Of the 1,841 patients enrolled in DECIDE, 922 were randomized to interferon beta-1a, and 919 were randomized to daclizumab beta. The treatment groups were well balanced in terms of demographic characteristics. Patients’ mean age was approximately 36 years, 68% of participants were female, and 90% of patients were white. Mean time since diagnosis at baseline was about 4 years, mean number of relapses in the previous year was 1.6, and mean baseline EDSS score was 2.5.
Daclizumab beta was associated with a lower risk of 24-week confirmed disability progression, compared with interferon beta-1a, in all subgroups. Patients aged 35 years or younger had the greatest risk reduction.
The proportion of patients who had 24-week sustained worsening on the MSFC at week 96 was 24% for daclizumab beta and 28% for interferon beta-1a. In the whole study population, daclizumab beta reduced the risk of this outcome by 20%, compared with interferon beta-1a. Daclizumab beta resulted in improved outcomes among all subgroups, compared with interferon beta-1a.
In addition, daclizumab beta reduced the risk of a clinically meaningful worsening of MSIS-29 PHYS at week 96 by 24%, compared with interferon beta-1a. The investigators observed trends favoring daclizumab beta in all subgroups.
“These analyses should be interpreted as exploratory and hypothesis-generating for future studies,” said Dr. Cohan and colleagues. They observed that some of the subgroups analyzed had small sample sizes and that no adjustments were made for multiple testing. Nevertheless, the results suggest that daclizumab beta has superior efficacy, compared with interferon beta-1a, regardless of patients’ demographic and disease characteristics, they concluded.
Biogen and AbbVie Biotherapeutics supported the study.
SOURCE: Cohan S et al. Mult Scler J. 2018. doi: 10.1177/1352458517735190.
This article was updated on 3/22/19.
FROM MULTIPLE SCLEROSIS JOURNAL
Key clinical point: Daclizumab beta reduces the risk of 24-week sustained worsening on the MSFC by 20%, compared with interferon beta-1a.
Major finding: Daclizumab appears superior to interferon beta-1a regardless of patients’ demographic or disease characteristics.
Study details: A post hoc analysis of the DECIDE study, which included 1,841 patients with relapsing-remitting MS.
Disclosures: Biogen and AbbVie Biotherapeutics supported the DECIDE study.
Source: Cohan S et al. Mult Scler J. 2018. doi: 10.1177/1352458517735190.
AAN publishes position statement on brain death
In a position statement published online ahead of print Jan. 2 in Neurology, Such uniformity would reduce uncertainty and improve patient care, according to the authors. The statement, which was drafted by the AAN’s Brain Death Working Group, also supports the development of uniform policies regarding brain death and its determination within American medical institutions. Finally, the document provides neurologists with guidance for responding to requests for accommodation, including objections to the determination of brain death and to the withdrawal of organ-sustaining technology.
The AAN defines brain death as death resulting from irreversible loss of function of the entire brain. The Uniform Determination of Death Act of 1981 held that brain death and circulatory death (that is, death resulting from irreversible loss of function of the circulatory system) are equivalent, and the AAN acknowledges this equivalence.
The two current medical standards for brain death are the AAN’s 2010 Evidence-Based Guideline Update: Determining Brain Death in Adults and the 2011 Guidelines for the Determination of Brain Death in Infants and Children, which was published by the pediatric section of the Society of Critical Care Medicine, the sections of neurology and critical care of the American Academy of Pediatrics, and the Child Neurology Society. “The AAN is unaware of any cases in which compliant application of the brain death guidelines led to inaccurate determination of death with return of any brain function, including consciousness, brainstem reflexes, or ventilatory effort,” according to their 2019 statement.
The only jurisdiction with laws that specifically defer to these standards, however, is Nevada. The vagueness of most states’ laws has contributed to divergent legal interpretations and idiosyncratic standards for determining brain death, according to the statement.
“The AAN believes that a specific, uniform standard for the determination of brain death is critically important to provide the highest quality patient-centered neurologic and end-of-life care,” said James Russell, DO, MS, a neurologist at Lahey Hospital and Medical Center in Burlington, Mass., and lead author of the position statement. “The AAN supports the development of legislation in every state modeled after the Nevada statute, which specifically defers to these current adult and pediatric brain death guidelines and any future updates.”
In addition to uniform institutional policies for determining brain death within U.S. medical facilities, the AAN calls for the development of training programs and credentialing mechanisms for physicians who determine brain death, regardless of their specialties. The association also supports research that enhances understanding of brain death and enhanced professional and public education.
While expressing respect and sympathy for requests for limited accommodation, the AAN asserts that these requests “must be based on the values of the patient, and not those of loved ones or other surrogate decision makers.” The association further observes that physicians have no ethical obligation to provide medical treatment to a deceased patient. New Jersey is the only state that legally obliges physicians to provide indefinite accommodation and continued application of organ-sustaining technology.
“The AAN believes that its members have both the moral authority and professional responsibility, when lawful, to perform a brain death evaluation, including apnea testing, after informing a patient’s loved ones or lawful surrogates of that intention, but without obligation to obtain informed consent,” according to the statement. “This position is analogous to the authority and responsibility historically granted to the medical profession to determine circulatory death without the requirement for additional informed consent.”
If a dispute about indefinite accommodation cannot be resolved, it is acceptable for a physician to withdraw organ-sustaining technology unilaterally over the objection of loved ones when legally permitted, according to the AAN. Such unilateral action is a measure of last resort and does not apply when the patient is a pregnant woman, said the authors. In the latter case, the ethical analysis should focus mainly on the welfare of the fetus.
The AAN provided financial support for the Brain Death Working Group’s efforts. The statement’s authors reported no relevant disclosures. The American Neurological Association and the Child Neurology Society have endorsed the AAN’s position statement.
SOURCE: Russell JA et al. Neurology. 2018 Jan 2. doi: 10.1212/WNL.0000000000006750.
In a position statement published online ahead of print Jan. 2 in Neurology, Such uniformity would reduce uncertainty and improve patient care, according to the authors. The statement, which was drafted by the AAN’s Brain Death Working Group, also supports the development of uniform policies regarding brain death and its determination within American medical institutions. Finally, the document provides neurologists with guidance for responding to requests for accommodation, including objections to the determination of brain death and to the withdrawal of organ-sustaining technology.
The AAN defines brain death as death resulting from irreversible loss of function of the entire brain. The Uniform Determination of Death Act of 1981 held that brain death and circulatory death (that is, death resulting from irreversible loss of function of the circulatory system) are equivalent, and the AAN acknowledges this equivalence.
The two current medical standards for brain death are the AAN’s 2010 Evidence-Based Guideline Update: Determining Brain Death in Adults and the 2011 Guidelines for the Determination of Brain Death in Infants and Children, which was published by the pediatric section of the Society of Critical Care Medicine, the sections of neurology and critical care of the American Academy of Pediatrics, and the Child Neurology Society. “The AAN is unaware of any cases in which compliant application of the brain death guidelines led to inaccurate determination of death with return of any brain function, including consciousness, brainstem reflexes, or ventilatory effort,” according to their 2019 statement.
The only jurisdiction with laws that specifically defer to these standards, however, is Nevada. The vagueness of most states’ laws has contributed to divergent legal interpretations and idiosyncratic standards for determining brain death, according to the statement.
“The AAN believes that a specific, uniform standard for the determination of brain death is critically important to provide the highest quality patient-centered neurologic and end-of-life care,” said James Russell, DO, MS, a neurologist at Lahey Hospital and Medical Center in Burlington, Mass., and lead author of the position statement. “The AAN supports the development of legislation in every state modeled after the Nevada statute, which specifically defers to these current adult and pediatric brain death guidelines and any future updates.”
In addition to uniform institutional policies for determining brain death within U.S. medical facilities, the AAN calls for the development of training programs and credentialing mechanisms for physicians who determine brain death, regardless of their specialties. The association also supports research that enhances understanding of brain death and enhanced professional and public education.
While expressing respect and sympathy for requests for limited accommodation, the AAN asserts that these requests “must be based on the values of the patient, and not those of loved ones or other surrogate decision makers.” The association further observes that physicians have no ethical obligation to provide medical treatment to a deceased patient. New Jersey is the only state that legally obliges physicians to provide indefinite accommodation and continued application of organ-sustaining technology.
“The AAN believes that its members have both the moral authority and professional responsibility, when lawful, to perform a brain death evaluation, including apnea testing, after informing a patient’s loved ones or lawful surrogates of that intention, but without obligation to obtain informed consent,” according to the statement. “This position is analogous to the authority and responsibility historically granted to the medical profession to determine circulatory death without the requirement for additional informed consent.”
If a dispute about indefinite accommodation cannot be resolved, it is acceptable for a physician to withdraw organ-sustaining technology unilaterally over the objection of loved ones when legally permitted, according to the AAN. Such unilateral action is a measure of last resort and does not apply when the patient is a pregnant woman, said the authors. In the latter case, the ethical analysis should focus mainly on the welfare of the fetus.
The AAN provided financial support for the Brain Death Working Group’s efforts. The statement’s authors reported no relevant disclosures. The American Neurological Association and the Child Neurology Society have endorsed the AAN’s position statement.
SOURCE: Russell JA et al. Neurology. 2018 Jan 2. doi: 10.1212/WNL.0000000000006750.
In a position statement published online ahead of print Jan. 2 in Neurology, Such uniformity would reduce uncertainty and improve patient care, according to the authors. The statement, which was drafted by the AAN’s Brain Death Working Group, also supports the development of uniform policies regarding brain death and its determination within American medical institutions. Finally, the document provides neurologists with guidance for responding to requests for accommodation, including objections to the determination of brain death and to the withdrawal of organ-sustaining technology.
The AAN defines brain death as death resulting from irreversible loss of function of the entire brain. The Uniform Determination of Death Act of 1981 held that brain death and circulatory death (that is, death resulting from irreversible loss of function of the circulatory system) are equivalent, and the AAN acknowledges this equivalence.
The two current medical standards for brain death are the AAN’s 2010 Evidence-Based Guideline Update: Determining Brain Death in Adults and the 2011 Guidelines for the Determination of Brain Death in Infants and Children, which was published by the pediatric section of the Society of Critical Care Medicine, the sections of neurology and critical care of the American Academy of Pediatrics, and the Child Neurology Society. “The AAN is unaware of any cases in which compliant application of the brain death guidelines led to inaccurate determination of death with return of any brain function, including consciousness, brainstem reflexes, or ventilatory effort,” according to their 2019 statement.
The only jurisdiction with laws that specifically defer to these standards, however, is Nevada. The vagueness of most states’ laws has contributed to divergent legal interpretations and idiosyncratic standards for determining brain death, according to the statement.
“The AAN believes that a specific, uniform standard for the determination of brain death is critically important to provide the highest quality patient-centered neurologic and end-of-life care,” said James Russell, DO, MS, a neurologist at Lahey Hospital and Medical Center in Burlington, Mass., and lead author of the position statement. “The AAN supports the development of legislation in every state modeled after the Nevada statute, which specifically defers to these current adult and pediatric brain death guidelines and any future updates.”
In addition to uniform institutional policies for determining brain death within U.S. medical facilities, the AAN calls for the development of training programs and credentialing mechanisms for physicians who determine brain death, regardless of their specialties. The association also supports research that enhances understanding of brain death and enhanced professional and public education.
While expressing respect and sympathy for requests for limited accommodation, the AAN asserts that these requests “must be based on the values of the patient, and not those of loved ones or other surrogate decision makers.” The association further observes that physicians have no ethical obligation to provide medical treatment to a deceased patient. New Jersey is the only state that legally obliges physicians to provide indefinite accommodation and continued application of organ-sustaining technology.
“The AAN believes that its members have both the moral authority and professional responsibility, when lawful, to perform a brain death evaluation, including apnea testing, after informing a patient’s loved ones or lawful surrogates of that intention, but without obligation to obtain informed consent,” according to the statement. “This position is analogous to the authority and responsibility historically granted to the medical profession to determine circulatory death without the requirement for additional informed consent.”
If a dispute about indefinite accommodation cannot be resolved, it is acceptable for a physician to withdraw organ-sustaining technology unilaterally over the objection of loved ones when legally permitted, according to the AAN. Such unilateral action is a measure of last resort and does not apply when the patient is a pregnant woman, said the authors. In the latter case, the ethical analysis should focus mainly on the welfare of the fetus.
The AAN provided financial support for the Brain Death Working Group’s efforts. The statement’s authors reported no relevant disclosures. The American Neurological Association and the Child Neurology Society have endorsed the AAN’s position statement.
SOURCE: Russell JA et al. Neurology. 2018 Jan 2. doi: 10.1212/WNL.0000000000006750.
FROM NEUROLOGY
Key clinical point: The AAN calls for uniform brain death laws, policies, and practices.
Major finding: The association published a position statement online on January 2.
Study details: The AAN’s Brain Death Working Group drafted the statement.
Disclosures: The authors reported no relevant disclosures, and the American Academy of Neurology funded their work.
Source: Russell JA et al. Neurology. 2018 Jan 2. doi: 10.1212/WNL.0000000000006750.
How does CBD compare and interact with other AEDs?
according to a review published in Developmental Medicine & Child Neurology. “Careful down-titration of benzodiazepines is essential to minimize sedation with adjunctive CBD,” the authors said.
Although CBD’s antiepileptic mechanisms “are not fully elucidated, it is clear that administration of CBD as adjunct therapy decreases seizure frequency in patients with Dravet syndrome and Lennox-Gastaut syndrome,” wrote Shayma Ali, a doctoral student in the department of pediatrics and child health at the University of Otago in Wellington, New Zealand, and her colleagues. “Contrary to public expectation of miraculous results, CBD has a similar antiepileptic and side effect profile to other AEDs. Nevertheless, as individual children with these developmental and epileptic encephalopathies are often refractory to available AEDs, the addition of another potentially effective therapeutic medicine will be warmly welcomed by families and physicians.”
The FDA approved Epidiolex, a pharmaceutical-grade oral solution that is 98% CBD, in June of 2018. In September of 2018, the Drug Enforcement Administration classified it as a Schedule V controlled substance. Patients’ use of nonpharmaceutical grade CBD products, including those combined with tetrahydrocannabinol (THC), “raises concerns about the use of products with THC on the developing brain,” the review authors said.
Randomized trials
Three randomized, controlled, double-blind trials in patients with Dravet syndrome and Lennox-Gastaut syndrome found that CBD, compared with placebo, results in greater median seizure reductions (38%-41% vs. 13%-19%) and responder rates (i.e., the proportion of patients with 50% reductions in convulsive or drop seizures; 39%-46% vs. 14%-27%).
Common adverse effects include somnolence, diarrhea, decreased appetite, fatigue, lethargy, pyrexia, and vomiting. Hepatic transaminases became elevated in some patients, and this result occurred more often in patients taking valproate.
No phase 2 or phase 3 trials have assessed the efficacy of CBD without coadministration of other AEDs, and CBD’s efficacy may relate to its impact on the pharmacokinetics of coadministered AEDs. “The most important clinical interaction is between CBD and clobazam, as [the dose of] clobazam often needs to be lowered because of excessive sedation,” wrote Ms. Ali and her colleagues. CBD inhibits CYP2C19 and CYP3A4 – enzymes that are involved in clobazam metabolism – which results in high plasma concentrations of clobazam’s active metabolite, norclobazam. Plasma levels of topiramate, rufinamide, zonisamide, and eslicarbazepine also may increase when these drugs are taken with CBD.
Challenges and opportunities
Of the hundreds of compounds in the marijuana plant, CBD “has the most evidence of antiepileptic efficacy and does not have the psychoactive effects” of THC, the authors said. Little evidence supports the combination of THC and CBD for the treatment of epilepsy. In addition, research indicates that THC can have a proconvulsive effect in animal models and harm the development of the human brain.
Investigators are evaluating alternative routes of CBD delivery to avoid first-pass metabolism, such as oromucosal sprays, transdermal gels, eye drops, intranasal sprays, and rectal suppositories. “Alternative methods of administration ... deserve consideration, particularly for the developmental and epileptic encephalopathies population, as administration of oral medication can be challenging,” they said.
SOURCE: Ali S et al. Dev Med Child Neurol. 2018. doi: 10.1111/dmcn.14087.
according to a review published in Developmental Medicine & Child Neurology. “Careful down-titration of benzodiazepines is essential to minimize sedation with adjunctive CBD,” the authors said.
Although CBD’s antiepileptic mechanisms “are not fully elucidated, it is clear that administration of CBD as adjunct therapy decreases seizure frequency in patients with Dravet syndrome and Lennox-Gastaut syndrome,” wrote Shayma Ali, a doctoral student in the department of pediatrics and child health at the University of Otago in Wellington, New Zealand, and her colleagues. “Contrary to public expectation of miraculous results, CBD has a similar antiepileptic and side effect profile to other AEDs. Nevertheless, as individual children with these developmental and epileptic encephalopathies are often refractory to available AEDs, the addition of another potentially effective therapeutic medicine will be warmly welcomed by families and physicians.”
The FDA approved Epidiolex, a pharmaceutical-grade oral solution that is 98% CBD, in June of 2018. In September of 2018, the Drug Enforcement Administration classified it as a Schedule V controlled substance. Patients’ use of nonpharmaceutical grade CBD products, including those combined with tetrahydrocannabinol (THC), “raises concerns about the use of products with THC on the developing brain,” the review authors said.
Randomized trials
Three randomized, controlled, double-blind trials in patients with Dravet syndrome and Lennox-Gastaut syndrome found that CBD, compared with placebo, results in greater median seizure reductions (38%-41% vs. 13%-19%) and responder rates (i.e., the proportion of patients with 50% reductions in convulsive or drop seizures; 39%-46% vs. 14%-27%).
Common adverse effects include somnolence, diarrhea, decreased appetite, fatigue, lethargy, pyrexia, and vomiting. Hepatic transaminases became elevated in some patients, and this result occurred more often in patients taking valproate.
No phase 2 or phase 3 trials have assessed the efficacy of CBD without coadministration of other AEDs, and CBD’s efficacy may relate to its impact on the pharmacokinetics of coadministered AEDs. “The most important clinical interaction is between CBD and clobazam, as [the dose of] clobazam often needs to be lowered because of excessive sedation,” wrote Ms. Ali and her colleagues. CBD inhibits CYP2C19 and CYP3A4 – enzymes that are involved in clobazam metabolism – which results in high plasma concentrations of clobazam’s active metabolite, norclobazam. Plasma levels of topiramate, rufinamide, zonisamide, and eslicarbazepine also may increase when these drugs are taken with CBD.
Challenges and opportunities
Of the hundreds of compounds in the marijuana plant, CBD “has the most evidence of antiepileptic efficacy and does not have the psychoactive effects” of THC, the authors said. Little evidence supports the combination of THC and CBD for the treatment of epilepsy. In addition, research indicates that THC can have a proconvulsive effect in animal models and harm the development of the human brain.
Investigators are evaluating alternative routes of CBD delivery to avoid first-pass metabolism, such as oromucosal sprays, transdermal gels, eye drops, intranasal sprays, and rectal suppositories. “Alternative methods of administration ... deserve consideration, particularly for the developmental and epileptic encephalopathies population, as administration of oral medication can be challenging,” they said.
SOURCE: Ali S et al. Dev Med Child Neurol. 2018. doi: 10.1111/dmcn.14087.
according to a review published in Developmental Medicine & Child Neurology. “Careful down-titration of benzodiazepines is essential to minimize sedation with adjunctive CBD,” the authors said.
Although CBD’s antiepileptic mechanisms “are not fully elucidated, it is clear that administration of CBD as adjunct therapy decreases seizure frequency in patients with Dravet syndrome and Lennox-Gastaut syndrome,” wrote Shayma Ali, a doctoral student in the department of pediatrics and child health at the University of Otago in Wellington, New Zealand, and her colleagues. “Contrary to public expectation of miraculous results, CBD has a similar antiepileptic and side effect profile to other AEDs. Nevertheless, as individual children with these developmental and epileptic encephalopathies are often refractory to available AEDs, the addition of another potentially effective therapeutic medicine will be warmly welcomed by families and physicians.”
The FDA approved Epidiolex, a pharmaceutical-grade oral solution that is 98% CBD, in June of 2018. In September of 2018, the Drug Enforcement Administration classified it as a Schedule V controlled substance. Patients’ use of nonpharmaceutical grade CBD products, including those combined with tetrahydrocannabinol (THC), “raises concerns about the use of products with THC on the developing brain,” the review authors said.
Randomized trials
Three randomized, controlled, double-blind trials in patients with Dravet syndrome and Lennox-Gastaut syndrome found that CBD, compared with placebo, results in greater median seizure reductions (38%-41% vs. 13%-19%) and responder rates (i.e., the proportion of patients with 50% reductions in convulsive or drop seizures; 39%-46% vs. 14%-27%).
Common adverse effects include somnolence, diarrhea, decreased appetite, fatigue, lethargy, pyrexia, and vomiting. Hepatic transaminases became elevated in some patients, and this result occurred more often in patients taking valproate.
No phase 2 or phase 3 trials have assessed the efficacy of CBD without coadministration of other AEDs, and CBD’s efficacy may relate to its impact on the pharmacokinetics of coadministered AEDs. “The most important clinical interaction is between CBD and clobazam, as [the dose of] clobazam often needs to be lowered because of excessive sedation,” wrote Ms. Ali and her colleagues. CBD inhibits CYP2C19 and CYP3A4 – enzymes that are involved in clobazam metabolism – which results in high plasma concentrations of clobazam’s active metabolite, norclobazam. Plasma levels of topiramate, rufinamide, zonisamide, and eslicarbazepine also may increase when these drugs are taken with CBD.
Challenges and opportunities
Of the hundreds of compounds in the marijuana plant, CBD “has the most evidence of antiepileptic efficacy and does not have the psychoactive effects” of THC, the authors said. Little evidence supports the combination of THC and CBD for the treatment of epilepsy. In addition, research indicates that THC can have a proconvulsive effect in animal models and harm the development of the human brain.
Investigators are evaluating alternative routes of CBD delivery to avoid first-pass metabolism, such as oromucosal sprays, transdermal gels, eye drops, intranasal sprays, and rectal suppositories. “Alternative methods of administration ... deserve consideration, particularly for the developmental and epileptic encephalopathies population, as administration of oral medication can be challenging,” they said.
SOURCE: Ali S et al. Dev Med Child Neurol. 2018. doi: 10.1111/dmcn.14087.
FROM DEVELOPMENTAL MEDICINE & CHILD NEUROLOGY
Key clinical point: Cannabidiol’s efficacy is similar to that of other antiepileptic drugs.
Major finding: Cannabidiol inhibits CYP2C19 and CYP3A4, which are involved in clobazam metabolism.
Study details: An invited review.
Disclosures: No disclosures were reported.
Source: Ali S et al. Dev Med Child Neurol. 2018. doi: 10.1111/dmcn.14087.
Food allergies linked to increased MS relapses, lesions
Patients with multiple sclerosis (MS) and food allergies had more relapses and gadolinium-enhancing lesions than patients with MS but no food allergies, according to a recent analysis of a longitudinal study.
Patients with food allergies had a 1.3-times higher rate for cumulative number of attacks and a 2.5-times higher likelihood of enhancing lesions on brain MRI in the analysis of patients enrolled in the Comprehensive Longitudinal Investigation of Multiple Sclerosis at the Brigham and Women’s Hospital (CLIMB).
By contrast, there were no significant differences in relapse or lesion rates for patients with environmental or drug allergies when compared with those without allergies, reported Tanuja Chitnis, MD, of Partners Multiple Sclerosis Center at Brigham and Women’s Hospital, Boston, and her coinvestigators.
“Our findings suggest that MS patients with allergies have more active disease than those without allergies, and that this effect is driven by food allergies,” Dr. Tanuja and her coauthors wrote in their report, which appeared in the Journal of Neurology, Neurosurgery and Psychiatry.
Previous investigations have looked at whether allergy history increases risk of developing MS, with conflicting results, they added, noting a meta-analysis of 10 observational studies suggesting no such link.
By contrast, whether allergies lead to more or less intense MS activity has not been addressed, according to investigators, who said this is the first study tying allergy history to MS disease course using clinical and MRI variables.
Their study was based on a subset of 1,349 patients with a diagnosis of MS who were enrolled in CLIMB and completed a self-administered questionnaire on food, environmental, and drug allergies. Of those patients, 922 reported allergies, while 427 reported no known allergies.
Patients with food allergies had a significantly increased rate of cumulative number of attacks, compared with those with no allergies, according to investigators, even after adjusting the analysis for gender, age at symptom onset, disease category, and time on treatment (relapse rate ratio, 1.274; 95% confidence interval, 1.023-1.587; P = .0305).
Food allergy patients were more than twice as likely as no-allergy patients were to have gadolinium-enhancing lesions on brain MRI after adjusting for other covariates (odds ratio, 2.53; 95% CI, 1.25-5.11; P = .0096), they added.
Patients with environmental and drug allergies also appeared to have more relapses, compared with patients with no allergies, in univariate analysis, but the differences were not significant in the adjusted analysis, investigators said. Likewise, there were trends toward a link between number of lesions and presence of environmental or drug allergies that did not hold up on multivariate analysis.
It is unknown what underlying biological mechanisms might potentially link food allergies to MS disease severity; however, findings of experimental studies support the hypothesis that gut microbiota might affect the risk and course of MS, Dr. Chitnis and her coauthors wrote in their report.
The CLIMB study was supported by Merck Serono and the National MS Society Nancy Davis Center Without Walls. Dr. Chitnis reported consulting fees from Biogen Idec, Novartis, Sanofi, Bayer, and Celgene outside the submitted work. Coauthors provided additional disclosures related to Merck Serono, Genentech, Verily Life Sciences, EMD Serono, Biogen, Teva, Sanofi, and Novartis, among others.
SOURCE: Fakih R et al. J Neurol Neurosurg Psychiatry. 2018 Dec 18. doi: 10.1136/jnnp-2018-319301.
Patients with multiple sclerosis (MS) and food allergies had more relapses and gadolinium-enhancing lesions than patients with MS but no food allergies, according to a recent analysis of a longitudinal study.
Patients with food allergies had a 1.3-times higher rate for cumulative number of attacks and a 2.5-times higher likelihood of enhancing lesions on brain MRI in the analysis of patients enrolled in the Comprehensive Longitudinal Investigation of Multiple Sclerosis at the Brigham and Women’s Hospital (CLIMB).
By contrast, there were no significant differences in relapse or lesion rates for patients with environmental or drug allergies when compared with those without allergies, reported Tanuja Chitnis, MD, of Partners Multiple Sclerosis Center at Brigham and Women’s Hospital, Boston, and her coinvestigators.
“Our findings suggest that MS patients with allergies have more active disease than those without allergies, and that this effect is driven by food allergies,” Dr. Tanuja and her coauthors wrote in their report, which appeared in the Journal of Neurology, Neurosurgery and Psychiatry.
Previous investigations have looked at whether allergy history increases risk of developing MS, with conflicting results, they added, noting a meta-analysis of 10 observational studies suggesting no such link.
By contrast, whether allergies lead to more or less intense MS activity has not been addressed, according to investigators, who said this is the first study tying allergy history to MS disease course using clinical and MRI variables.
Their study was based on a subset of 1,349 patients with a diagnosis of MS who were enrolled in CLIMB and completed a self-administered questionnaire on food, environmental, and drug allergies. Of those patients, 922 reported allergies, while 427 reported no known allergies.
Patients with food allergies had a significantly increased rate of cumulative number of attacks, compared with those with no allergies, according to investigators, even after adjusting the analysis for gender, age at symptom onset, disease category, and time on treatment (relapse rate ratio, 1.274; 95% confidence interval, 1.023-1.587; P = .0305).
Food allergy patients were more than twice as likely as no-allergy patients were to have gadolinium-enhancing lesions on brain MRI after adjusting for other covariates (odds ratio, 2.53; 95% CI, 1.25-5.11; P = .0096), they added.
Patients with environmental and drug allergies also appeared to have more relapses, compared with patients with no allergies, in univariate analysis, but the differences were not significant in the adjusted analysis, investigators said. Likewise, there were trends toward a link between number of lesions and presence of environmental or drug allergies that did not hold up on multivariate analysis.
It is unknown what underlying biological mechanisms might potentially link food allergies to MS disease severity; however, findings of experimental studies support the hypothesis that gut microbiota might affect the risk and course of MS, Dr. Chitnis and her coauthors wrote in their report.
The CLIMB study was supported by Merck Serono and the National MS Society Nancy Davis Center Without Walls. Dr. Chitnis reported consulting fees from Biogen Idec, Novartis, Sanofi, Bayer, and Celgene outside the submitted work. Coauthors provided additional disclosures related to Merck Serono, Genentech, Verily Life Sciences, EMD Serono, Biogen, Teva, Sanofi, and Novartis, among others.
SOURCE: Fakih R et al. J Neurol Neurosurg Psychiatry. 2018 Dec 18. doi: 10.1136/jnnp-2018-319301.
Patients with multiple sclerosis (MS) and food allergies had more relapses and gadolinium-enhancing lesions than patients with MS but no food allergies, according to a recent analysis of a longitudinal study.
Patients with food allergies had a 1.3-times higher rate for cumulative number of attacks and a 2.5-times higher likelihood of enhancing lesions on brain MRI in the analysis of patients enrolled in the Comprehensive Longitudinal Investigation of Multiple Sclerosis at the Brigham and Women’s Hospital (CLIMB).
By contrast, there were no significant differences in relapse or lesion rates for patients with environmental or drug allergies when compared with those without allergies, reported Tanuja Chitnis, MD, of Partners Multiple Sclerosis Center at Brigham and Women’s Hospital, Boston, and her coinvestigators.
“Our findings suggest that MS patients with allergies have more active disease than those without allergies, and that this effect is driven by food allergies,” Dr. Tanuja and her coauthors wrote in their report, which appeared in the Journal of Neurology, Neurosurgery and Psychiatry.
Previous investigations have looked at whether allergy history increases risk of developing MS, with conflicting results, they added, noting a meta-analysis of 10 observational studies suggesting no such link.
By contrast, whether allergies lead to more or less intense MS activity has not been addressed, according to investigators, who said this is the first study tying allergy history to MS disease course using clinical and MRI variables.
Their study was based on a subset of 1,349 patients with a diagnosis of MS who were enrolled in CLIMB and completed a self-administered questionnaire on food, environmental, and drug allergies. Of those patients, 922 reported allergies, while 427 reported no known allergies.
Patients with food allergies had a significantly increased rate of cumulative number of attacks, compared with those with no allergies, according to investigators, even after adjusting the analysis for gender, age at symptom onset, disease category, and time on treatment (relapse rate ratio, 1.274; 95% confidence interval, 1.023-1.587; P = .0305).
Food allergy patients were more than twice as likely as no-allergy patients were to have gadolinium-enhancing lesions on brain MRI after adjusting for other covariates (odds ratio, 2.53; 95% CI, 1.25-5.11; P = .0096), they added.
Patients with environmental and drug allergies also appeared to have more relapses, compared with patients with no allergies, in univariate analysis, but the differences were not significant in the adjusted analysis, investigators said. Likewise, there were trends toward a link between number of lesions and presence of environmental or drug allergies that did not hold up on multivariate analysis.
It is unknown what underlying biological mechanisms might potentially link food allergies to MS disease severity; however, findings of experimental studies support the hypothesis that gut microbiota might affect the risk and course of MS, Dr. Chitnis and her coauthors wrote in their report.
The CLIMB study was supported by Merck Serono and the National MS Society Nancy Davis Center Without Walls. Dr. Chitnis reported consulting fees from Biogen Idec, Novartis, Sanofi, Bayer, and Celgene outside the submitted work. Coauthors provided additional disclosures related to Merck Serono, Genentech, Verily Life Sciences, EMD Serono, Biogen, Teva, Sanofi, and Novartis, among others.
SOURCE: Fakih R et al. J Neurol Neurosurg Psychiatry. 2018 Dec 18. doi: 10.1136/jnnp-2018-319301.
FROM THE JOURNAL OF NEUROLOGY, NEUROSURGERY, AND PSYCHIATRY
Active migraine in women linked to lower risk of developing T2DM
Women with active migraines are less likely to have type 2 diabetes mellitus (T2DM) and show a decrease in migraine symptoms prior to diagnosis of T2DM, indicating an inverse relationship between hyperglycemia, hyperinsulinism, and migraines, according to recent research published in JAMA Neurology.
“Because plasma glucose concentration rises with time up to the point of type 2 diabetes occurrence, the prevalence of migraine symptoms may decrease,” Guy Fagherazzi, PhD, at the Center for Research in Epidemiology and Population Health at the Gustave Roussy Institute in Villejuif, France, and his colleagues wrote in their study. “Consequently, tracking the evolution and especially the decrease of migraine frequency in individuals with migraine at high risk of diabetes, such as individuals with obesity, irrespective of age could be the sign of an emerging increased blood glucose levels, prediabetes, or type 2 diabetes.”
The researchers used data from the prospective Etude Epidémiologique Auprès des Femmes de la Mutuelle Générale de l’Education Nationale (E3N) study, initiated in 1990 and identified 74,247 women (mean age, 61 years old) with self-reported migraine in a 2002 follow-up questionnaire who had 10-year follow-up data during 2004-2014. The women in the cohort were born during 1925-1950 and completed biennial questionnaires about their health, including migraine status and medications, since 1992. The participants were divided into groups based on no migraine (49,199 participants), active migraine (7,839 participants), or prior migraine history (17,209 participants), and patients with T2DM at baseline were excluded.
Dr. Fagherazzi and his colleagues found 2,372 cases of type 2 diabetes over the follow-up period. Women who had active migraine status were less likely to have T2DM (hazard ratio, 0.80; 95% confidence interval, 0.67-0.96) than were the participants who did not have migraines, and this inverse association persisted after the researchers adjusted for factors such as myocardial infarction, education level, family history of diabetes, body mass index, smoking status, hypertension, physical activity, oral contraceptive use, menopausal status, menopausal hormone therapy, handedness, antimigraine preparations, and other prescribed migraine drugs (HR, 0.70; 95% CI, 0.58-0.85).
In the participants who developed T2DM, the researchers also found that there was a decrease in the prevalence of active migraine in the 24 years prior to T2DM diagnosis from 22% (95% CI, 16%-27%) to 11% (95% CI, 10%-12%) after adjusting for T2DM risk factors, which was then followed by an up to 22-year plateau in migraine prevalence of 11% for these participants.
“The linear decrease of migraine prevalence long before and the plateau long after type 2 diabetes diagnosis is novel and the association deserves to be studied in other populations,” Dr. Fagherazzi and his colleagues wrote. “The potential beneficial role of both hyperglycemia and hyperinsulinism on migraine occurrence needs to be further explored.”
The researchers noted limitations in the study, such as self-reported migraine by participants in the cohort, exclusion of non–pharmacologically treated T2DM cases, observational nature of the study, and homogenized population in the E3N cohort consisting of mainly women in menopause who were teachers and belonged to the same health insurance plan.
This study was funded by a grant from the French Research agency. The E3N cohort study was funded by the “Mutuelle Générale de l’Education Nationale,” European Community, French League against Cancer, Gustave Roussy, and French Institute of Health and Medical Research. Dr. Kurth is an advisory board member for CoLucid and has received funding for a research project from Amgen, honoraria from Lilly, lecture support from Novartis and Daiichi Sankyo, and travel support from the International Headache Society, as well as provided BMJ with editorial services.
SOURCE: Fagherazzi G et al. JAMA Neurol. 2018. doi: 10.1001/jamaneurol.2018.3960.
Although it has been noted for some time in the clinical setting, researchers are still unsure why there is an inverse association between active migraine and type 2 diabetes mellitus, as noted by Fagherazzi et al. in a recent study.
One explanation is the presence of calcitonin gene–related peptide in both animal models of energy metabolism and the pathophysiology of migraine. It is possible that insulin resistance and hyperglycemia damage the sensory neurons that produce the peptide. If these damaged nerves are soothed, migraine may resolve.
Other silver linings associated with active migraine include an increased likelihood of having a healthy cardiovascular system and decreased alcohol consumption.
The epidemiology of migraine and findings like those in this study prompt the question: What is migraine good for?
Amy A. Gelfand, MD , of the University of California, San Francisco, and Elizabeth Loder, MD , MPH, of Harvard Medical School in Boston made these comments in an editorial accompanying Dr. Fagherazzi’s study. They disclosed a number of financial relationships with companies marketing treatments for migraine.
Although it has been noted for some time in the clinical setting, researchers are still unsure why there is an inverse association between active migraine and type 2 diabetes mellitus, as noted by Fagherazzi et al. in a recent study.
One explanation is the presence of calcitonin gene–related peptide in both animal models of energy metabolism and the pathophysiology of migraine. It is possible that insulin resistance and hyperglycemia damage the sensory neurons that produce the peptide. If these damaged nerves are soothed, migraine may resolve.
Other silver linings associated with active migraine include an increased likelihood of having a healthy cardiovascular system and decreased alcohol consumption.
The epidemiology of migraine and findings like those in this study prompt the question: What is migraine good for?
Amy A. Gelfand, MD , of the University of California, San Francisco, and Elizabeth Loder, MD , MPH, of Harvard Medical School in Boston made these comments in an editorial accompanying Dr. Fagherazzi’s study. They disclosed a number of financial relationships with companies marketing treatments for migraine.
Although it has been noted for some time in the clinical setting, researchers are still unsure why there is an inverse association between active migraine and type 2 diabetes mellitus, as noted by Fagherazzi et al. in a recent study.
One explanation is the presence of calcitonin gene–related peptide in both animal models of energy metabolism and the pathophysiology of migraine. It is possible that insulin resistance and hyperglycemia damage the sensory neurons that produce the peptide. If these damaged nerves are soothed, migraine may resolve.
Other silver linings associated with active migraine include an increased likelihood of having a healthy cardiovascular system and decreased alcohol consumption.
The epidemiology of migraine and findings like those in this study prompt the question: What is migraine good for?
Amy A. Gelfand, MD , of the University of California, San Francisco, and Elizabeth Loder, MD , MPH, of Harvard Medical School in Boston made these comments in an editorial accompanying Dr. Fagherazzi’s study. They disclosed a number of financial relationships with companies marketing treatments for migraine.
Women with active migraines are less likely to have type 2 diabetes mellitus (T2DM) and show a decrease in migraine symptoms prior to diagnosis of T2DM, indicating an inverse relationship between hyperglycemia, hyperinsulinism, and migraines, according to recent research published in JAMA Neurology.
“Because plasma glucose concentration rises with time up to the point of type 2 diabetes occurrence, the prevalence of migraine symptoms may decrease,” Guy Fagherazzi, PhD, at the Center for Research in Epidemiology and Population Health at the Gustave Roussy Institute in Villejuif, France, and his colleagues wrote in their study. “Consequently, tracking the evolution and especially the decrease of migraine frequency in individuals with migraine at high risk of diabetes, such as individuals with obesity, irrespective of age could be the sign of an emerging increased blood glucose levels, prediabetes, or type 2 diabetes.”
The researchers used data from the prospective Etude Epidémiologique Auprès des Femmes de la Mutuelle Générale de l’Education Nationale (E3N) study, initiated in 1990 and identified 74,247 women (mean age, 61 years old) with self-reported migraine in a 2002 follow-up questionnaire who had 10-year follow-up data during 2004-2014. The women in the cohort were born during 1925-1950 and completed biennial questionnaires about their health, including migraine status and medications, since 1992. The participants were divided into groups based on no migraine (49,199 participants), active migraine (7,839 participants), or prior migraine history (17,209 participants), and patients with T2DM at baseline were excluded.
Dr. Fagherazzi and his colleagues found 2,372 cases of type 2 diabetes over the follow-up period. Women who had active migraine status were less likely to have T2DM (hazard ratio, 0.80; 95% confidence interval, 0.67-0.96) than were the participants who did not have migraines, and this inverse association persisted after the researchers adjusted for factors such as myocardial infarction, education level, family history of diabetes, body mass index, smoking status, hypertension, physical activity, oral contraceptive use, menopausal status, menopausal hormone therapy, handedness, antimigraine preparations, and other prescribed migraine drugs (HR, 0.70; 95% CI, 0.58-0.85).
In the participants who developed T2DM, the researchers also found that there was a decrease in the prevalence of active migraine in the 24 years prior to T2DM diagnosis from 22% (95% CI, 16%-27%) to 11% (95% CI, 10%-12%) after adjusting for T2DM risk factors, which was then followed by an up to 22-year plateau in migraine prevalence of 11% for these participants.
“The linear decrease of migraine prevalence long before and the plateau long after type 2 diabetes diagnosis is novel and the association deserves to be studied in other populations,” Dr. Fagherazzi and his colleagues wrote. “The potential beneficial role of both hyperglycemia and hyperinsulinism on migraine occurrence needs to be further explored.”
The researchers noted limitations in the study, such as self-reported migraine by participants in the cohort, exclusion of non–pharmacologically treated T2DM cases, observational nature of the study, and homogenized population in the E3N cohort consisting of mainly women in menopause who were teachers and belonged to the same health insurance plan.
This study was funded by a grant from the French Research agency. The E3N cohort study was funded by the “Mutuelle Générale de l’Education Nationale,” European Community, French League against Cancer, Gustave Roussy, and French Institute of Health and Medical Research. Dr. Kurth is an advisory board member for CoLucid and has received funding for a research project from Amgen, honoraria from Lilly, lecture support from Novartis and Daiichi Sankyo, and travel support from the International Headache Society, as well as provided BMJ with editorial services.
SOURCE: Fagherazzi G et al. JAMA Neurol. 2018. doi: 10.1001/jamaneurol.2018.3960.
Women with active migraines are less likely to have type 2 diabetes mellitus (T2DM) and show a decrease in migraine symptoms prior to diagnosis of T2DM, indicating an inverse relationship between hyperglycemia, hyperinsulinism, and migraines, according to recent research published in JAMA Neurology.
“Because plasma glucose concentration rises with time up to the point of type 2 diabetes occurrence, the prevalence of migraine symptoms may decrease,” Guy Fagherazzi, PhD, at the Center for Research in Epidemiology and Population Health at the Gustave Roussy Institute in Villejuif, France, and his colleagues wrote in their study. “Consequently, tracking the evolution and especially the decrease of migraine frequency in individuals with migraine at high risk of diabetes, such as individuals with obesity, irrespective of age could be the sign of an emerging increased blood glucose levels, prediabetes, or type 2 diabetes.”
The researchers used data from the prospective Etude Epidémiologique Auprès des Femmes de la Mutuelle Générale de l’Education Nationale (E3N) study, initiated in 1990 and identified 74,247 women (mean age, 61 years old) with self-reported migraine in a 2002 follow-up questionnaire who had 10-year follow-up data during 2004-2014. The women in the cohort were born during 1925-1950 and completed biennial questionnaires about their health, including migraine status and medications, since 1992. The participants were divided into groups based on no migraine (49,199 participants), active migraine (7,839 participants), or prior migraine history (17,209 participants), and patients with T2DM at baseline were excluded.
Dr. Fagherazzi and his colleagues found 2,372 cases of type 2 diabetes over the follow-up period. Women who had active migraine status were less likely to have T2DM (hazard ratio, 0.80; 95% confidence interval, 0.67-0.96) than were the participants who did not have migraines, and this inverse association persisted after the researchers adjusted for factors such as myocardial infarction, education level, family history of diabetes, body mass index, smoking status, hypertension, physical activity, oral contraceptive use, menopausal status, menopausal hormone therapy, handedness, antimigraine preparations, and other prescribed migraine drugs (HR, 0.70; 95% CI, 0.58-0.85).
In the participants who developed T2DM, the researchers also found that there was a decrease in the prevalence of active migraine in the 24 years prior to T2DM diagnosis from 22% (95% CI, 16%-27%) to 11% (95% CI, 10%-12%) after adjusting for T2DM risk factors, which was then followed by an up to 22-year plateau in migraine prevalence of 11% for these participants.
“The linear decrease of migraine prevalence long before and the plateau long after type 2 diabetes diagnosis is novel and the association deserves to be studied in other populations,” Dr. Fagherazzi and his colleagues wrote. “The potential beneficial role of both hyperglycemia and hyperinsulinism on migraine occurrence needs to be further explored.”
The researchers noted limitations in the study, such as self-reported migraine by participants in the cohort, exclusion of non–pharmacologically treated T2DM cases, observational nature of the study, and homogenized population in the E3N cohort consisting of mainly women in menopause who were teachers and belonged to the same health insurance plan.
This study was funded by a grant from the French Research agency. The E3N cohort study was funded by the “Mutuelle Générale de l’Education Nationale,” European Community, French League against Cancer, Gustave Roussy, and French Institute of Health and Medical Research. Dr. Kurth is an advisory board member for CoLucid and has received funding for a research project from Amgen, honoraria from Lilly, lecture support from Novartis and Daiichi Sankyo, and travel support from the International Headache Society, as well as provided BMJ with editorial services.
SOURCE: Fagherazzi G et al. JAMA Neurol. 2018. doi: 10.1001/jamaneurol.2018.3960.
FROM JAMA NEUROLOGY
Key clinical point: There was an inverse association between active migraine and type 2 diabetes mellitus in women over 10 years of follow-up.
Major finding: Compared with women who had no history of active migraine, women with active migraine had a lower risk of developing type 2 diabetes (univariate hazard ratio, 0.80; 95% confidence interval, 0.67-0.96).
Study details: Results from a prospective, population-based study of 74,247 women with active migraines in the E3N cohort study in France.
Disclosures: This study was funded by a grant from the French Research agency. The E3N cohort study was funded by the Mutuelle Générale de l’Education Nationale, European Community, French League against Cancer, Gustave Roussy, and French Institute of Health and Medical Research. Dr. Kurth is an advisory board member for CoLucid and has received funding for a research project from Amgen, honoraria from Lilly, lecture support from Novartis and Daiichi Sankyo, and travel support from the International Headache Society, as well as provided the BMJ with editorial services.
Source: Fagherazzi G et al. JAMA Neurol. 2018. doi: 10.1001/jamaneurol.2018.3960.
Neurologic Disease Eventually Affects Half of Women and One-Third of Men
Findings strengthen the call for prioritizing the focus on preventive interventions at the population level.
Around one-half of women and one-third of men will develop dementia, stroke, or parkinsonism during their lifetime, according to a study published online ahead of print October 2 in the Journal of Neurology, Neurosurgery & Psychiatry.
The population-based Rotterdam study involved 12,102 individuals (57.7% women) who were ages 45 or older and free of neurologic disease at baseline. This cohort was followed for 26 years. Silvan Licher, a PhD student in the Department of Epidemiology at Erasmus MC University Medical Center Rotterdam in the Netherlands, and colleagues found that a 45-year-old woman had a 48.2% overall remaining lifetime risk of developing dementia, stroke, or parkinsonism, while a 45-year-old man had a 36.3% lifetime risk.
“There are currently no disease-modifying drugs available for dementia and most causes of parkinsonism, and prevention of stroke is hampered by suboptimal adherence to effective preventive strategies or unmet guideline thresholds,” the authors wrote. “Yet a delay in onset of these common neurologic diseases by merely a few years could reduce the population burden of these diseases substantially.”
Women age 45 had a significantly higher lifetime risk than men of developing dementia (31.4% vs 18.6%, respectively) and stroke (21.6% vs 19.3%), but the risk of parkinsonism was similar between the sexes. Women also had a significantly greater lifetime risk of developing more than one neurologic disease, compared with men (4% vs 3.1%), largely because of the overlap between dementia and stroke.
At age 45, women had the greatest risk of dementia, but as men and women aged, their remaining lifetime risk of dementia increased relative to other neurologic diseases. After age 85, 66.6% of first diagnoses in women and 55.6% in men were dementia. By comparison, first manifestation of stroke was the greatest threat to men age 45. Men also were at a significantly higher risk for stroke at a younger age—before age 75—than were women (8.4% vs 5.8%, respectively). In the case of parkinsonism, the lifetime risk peaked earlier than it did for dementia and stroke and was relatively low after age 85, with no significant differences in risk between men and women.
The authors considered what effect a delay in disease onset and occurrence might have on remaining lifetime risk for neurologic disease. They found that a one-, two-, or three-year delay in the onset of all neurologic disease was associated with a 20% reduction in lifetime risk in individuals age 45 or older, and a greater than 50% reduction in risk in the oldest. A three-year delay in the onset of dementia reduced the lifetime risk by 15% for men and women age 45 and conveyed a 30% reduction in risk to those age 45 or older.
The Rotterdam study is supported by Erasmus MC and Erasmus University Rotterdam; the Netherlands Organization for Scientific Research; the Netherlands Organization for Health Research and Development; the Research Institute for Diseases in the Elderly; the Netherlands Genomics Initiative; the Ministry of Education, Culture, and Science; the Ministry of Health, Welfare, and Sports; the European Commission and the Municipality of Rotterdam; the Netherlands Consortium for Healthy Aging; and the Dutch Heart Foundation.
—Bianca Nogrady
Suggested Reading
Licher S, Darweesh SKL, Wolters FJ, et al. Lifetime risk of common neurological diseases in the elderly population. J Neurol Neurosurg Psychiatry. 2018 Oct 2 [Epub ahead of print].
Findings strengthen the call for prioritizing the focus on preventive interventions at the population level.
Findings strengthen the call for prioritizing the focus on preventive interventions at the population level.
Around one-half of women and one-third of men will develop dementia, stroke, or parkinsonism during their lifetime, according to a study published online ahead of print October 2 in the Journal of Neurology, Neurosurgery & Psychiatry.
The population-based Rotterdam study involved 12,102 individuals (57.7% women) who were ages 45 or older and free of neurologic disease at baseline. This cohort was followed for 26 years. Silvan Licher, a PhD student in the Department of Epidemiology at Erasmus MC University Medical Center Rotterdam in the Netherlands, and colleagues found that a 45-year-old woman had a 48.2% overall remaining lifetime risk of developing dementia, stroke, or parkinsonism, while a 45-year-old man had a 36.3% lifetime risk.
“There are currently no disease-modifying drugs available for dementia and most causes of parkinsonism, and prevention of stroke is hampered by suboptimal adherence to effective preventive strategies or unmet guideline thresholds,” the authors wrote. “Yet a delay in onset of these common neurologic diseases by merely a few years could reduce the population burden of these diseases substantially.”
Women age 45 had a significantly higher lifetime risk than men of developing dementia (31.4% vs 18.6%, respectively) and stroke (21.6% vs 19.3%), but the risk of parkinsonism was similar between the sexes. Women also had a significantly greater lifetime risk of developing more than one neurologic disease, compared with men (4% vs 3.1%), largely because of the overlap between dementia and stroke.
At age 45, women had the greatest risk of dementia, but as men and women aged, their remaining lifetime risk of dementia increased relative to other neurologic diseases. After age 85, 66.6% of first diagnoses in women and 55.6% in men were dementia. By comparison, first manifestation of stroke was the greatest threat to men age 45. Men also were at a significantly higher risk for stroke at a younger age—before age 75—than were women (8.4% vs 5.8%, respectively). In the case of parkinsonism, the lifetime risk peaked earlier than it did for dementia and stroke and was relatively low after age 85, with no significant differences in risk between men and women.
The authors considered what effect a delay in disease onset and occurrence might have on remaining lifetime risk for neurologic disease. They found that a one-, two-, or three-year delay in the onset of all neurologic disease was associated with a 20% reduction in lifetime risk in individuals age 45 or older, and a greater than 50% reduction in risk in the oldest. A three-year delay in the onset of dementia reduced the lifetime risk by 15% for men and women age 45 and conveyed a 30% reduction in risk to those age 45 or older.
The Rotterdam study is supported by Erasmus MC and Erasmus University Rotterdam; the Netherlands Organization for Scientific Research; the Netherlands Organization for Health Research and Development; the Research Institute for Diseases in the Elderly; the Netherlands Genomics Initiative; the Ministry of Education, Culture, and Science; the Ministry of Health, Welfare, and Sports; the European Commission and the Municipality of Rotterdam; the Netherlands Consortium for Healthy Aging; and the Dutch Heart Foundation.
—Bianca Nogrady
Suggested Reading
Licher S, Darweesh SKL, Wolters FJ, et al. Lifetime risk of common neurological diseases in the elderly population. J Neurol Neurosurg Psychiatry. 2018 Oct 2 [Epub ahead of print].
Around one-half of women and one-third of men will develop dementia, stroke, or parkinsonism during their lifetime, according to a study published online ahead of print October 2 in the Journal of Neurology, Neurosurgery & Psychiatry.
The population-based Rotterdam study involved 12,102 individuals (57.7% women) who were ages 45 or older and free of neurologic disease at baseline. This cohort was followed for 26 years. Silvan Licher, a PhD student in the Department of Epidemiology at Erasmus MC University Medical Center Rotterdam in the Netherlands, and colleagues found that a 45-year-old woman had a 48.2% overall remaining lifetime risk of developing dementia, stroke, or parkinsonism, while a 45-year-old man had a 36.3% lifetime risk.
“There are currently no disease-modifying drugs available for dementia and most causes of parkinsonism, and prevention of stroke is hampered by suboptimal adherence to effective preventive strategies or unmet guideline thresholds,” the authors wrote. “Yet a delay in onset of these common neurologic diseases by merely a few years could reduce the population burden of these diseases substantially.”
Women age 45 had a significantly higher lifetime risk than men of developing dementia (31.4% vs 18.6%, respectively) and stroke (21.6% vs 19.3%), but the risk of parkinsonism was similar between the sexes. Women also had a significantly greater lifetime risk of developing more than one neurologic disease, compared with men (4% vs 3.1%), largely because of the overlap between dementia and stroke.
At age 45, women had the greatest risk of dementia, but as men and women aged, their remaining lifetime risk of dementia increased relative to other neurologic diseases. After age 85, 66.6% of first diagnoses in women and 55.6% in men were dementia. By comparison, first manifestation of stroke was the greatest threat to men age 45. Men also were at a significantly higher risk for stroke at a younger age—before age 75—than were women (8.4% vs 5.8%, respectively). In the case of parkinsonism, the lifetime risk peaked earlier than it did for dementia and stroke and was relatively low after age 85, with no significant differences in risk between men and women.
The authors considered what effect a delay in disease onset and occurrence might have on remaining lifetime risk for neurologic disease. They found that a one-, two-, or three-year delay in the onset of all neurologic disease was associated with a 20% reduction in lifetime risk in individuals age 45 or older, and a greater than 50% reduction in risk in the oldest. A three-year delay in the onset of dementia reduced the lifetime risk by 15% for men and women age 45 and conveyed a 30% reduction in risk to those age 45 or older.
The Rotterdam study is supported by Erasmus MC and Erasmus University Rotterdam; the Netherlands Organization for Scientific Research; the Netherlands Organization for Health Research and Development; the Research Institute for Diseases in the Elderly; the Netherlands Genomics Initiative; the Ministry of Education, Culture, and Science; the Ministry of Health, Welfare, and Sports; the European Commission and the Municipality of Rotterdam; the Netherlands Consortium for Healthy Aging; and the Dutch Heart Foundation.
—Bianca Nogrady
Suggested Reading
Licher S, Darweesh SKL, Wolters FJ, et al. Lifetime risk of common neurological diseases in the elderly population. J Neurol Neurosurg Psychiatry. 2018 Oct 2 [Epub ahead of print].
Higher Rate of Loss in Unplanned Pregnancies for Women With Epilepsy
The risk of fetal loss is greater if the interval between pregnancies is under one year.
Unplanned pregnancy among women with epilepsy is associated with twice the risk of spontaneous fetal loss (SFL) when compared with women with epilepsy who planned their pregnancy, according to results from a retrospective study published online ahead of print October 15 in JAMA Neurology.
“This analysis adds the finding that unplanned pregnancy may increase the risk of SFL in women with epilepsy and identifies pregnancy planning, maternal age, and interpregnancy interval as significant modifiable variables,” said Andrew G. Herzog, MD, a neurologist at the Harvard Neuroendocrine Unit at Beth Israel Deaconess Medical Center in Wellesley, Massachusetts, and colleagues.
The Epilepsy Birth Control Registry
The researchers examined results from a web-based survey completed by 1,144 women in the Epilepsy Birth Control Registry (EBCR) between 2010 and 2014. Respondents provided data on contraception use, pregnancy history, and antiepileptic drug (AED) treatment. Patients were between ages 18 and 47 (mean, 28.5). Approximately 8.7% of the cohort were minorities, and 39.8% had household incomes of $25,000 or less.
Pregnancy history data included number of pregnancies, number of planned or unplanned pregnancies, AED type used during pregnancies, and pregnancy outcomes such as live birth, induced abortion, and SFL. Patients were categorized as receiving no therapy, monotherapy, or polytherapy. AED use was further subdivided into no AED, enzyme-inducing AED, non–enzyme-inducing AED, enzyme-inhibiting AED, glucuronidated AED, and mixed.
Most Pregnancies Were Unplanned
Of 794 pregnancies, 530 (66.8%) were unplanned and 264 (33.2%) were planned. Outcomes included 473 live births (59.6%), 141 induced abortions (17.8%), and 180 SFLs (22.7%). Among patients who did not have an induced abortion, SFL risk was higher if the pregnancy was unplanned (137 patients, 35.0%), compared with planned (43 patients, 16.4%) The risk ratio (RR) of SFL was 2.14. According to a regression analysis, SFL risk was higher for patients where “planning was entered alone” in unplanned pregnancies (odds ratio [OR], 2.75), as well as when adjusted for AED category, maternal age, and interpregnancy interval (OR, 3.57).
There was an association between maternal age (OR, 0.957) and risk of SFL. Risk was lower in the 18- to 27-year-olds (118 patients; 29.5%; RR, 0.57) and 28- to 37-year-olds (44 patients; 20.8%; RR, 0.40), compared with the under-18 group (15 patients, 51.7%). Risk of SFL was related to interpregnancy interval (OR, 2.878). This risk was greater if the interpregnancy interval was under one year (56 patients, 45.9%), compared with one year (56 patients, 22.8%) or higher (RR, 2.02).
The Epilepsy Foun-dation and Lundbeck funded the study. Dr. Herzog reports grants, and two coauthors received salary support from grants, from the two organizations.
—Jeff Craven
Suggested Reading
Herzog AG, Mandle HB, MacEachern DB. Association of unintended pregnancy with spontaneous fetal loss in women with epilepsy: findings of the Epilepsy Birth Control Registry. JAMA Neurol. 2018 Oct 15 [Epub ahead of print].
The risk of fetal loss is greater if the interval between pregnancies is under one year.
The risk of fetal loss is greater if the interval between pregnancies is under one year.
Unplanned pregnancy among women with epilepsy is associated with twice the risk of spontaneous fetal loss (SFL) when compared with women with epilepsy who planned their pregnancy, according to results from a retrospective study published online ahead of print October 15 in JAMA Neurology.
“This analysis adds the finding that unplanned pregnancy may increase the risk of SFL in women with epilepsy and identifies pregnancy planning, maternal age, and interpregnancy interval as significant modifiable variables,” said Andrew G. Herzog, MD, a neurologist at the Harvard Neuroendocrine Unit at Beth Israel Deaconess Medical Center in Wellesley, Massachusetts, and colleagues.
The Epilepsy Birth Control Registry
The researchers examined results from a web-based survey completed by 1,144 women in the Epilepsy Birth Control Registry (EBCR) between 2010 and 2014. Respondents provided data on contraception use, pregnancy history, and antiepileptic drug (AED) treatment. Patients were between ages 18 and 47 (mean, 28.5). Approximately 8.7% of the cohort were minorities, and 39.8% had household incomes of $25,000 or less.
Pregnancy history data included number of pregnancies, number of planned or unplanned pregnancies, AED type used during pregnancies, and pregnancy outcomes such as live birth, induced abortion, and SFL. Patients were categorized as receiving no therapy, monotherapy, or polytherapy. AED use was further subdivided into no AED, enzyme-inducing AED, non–enzyme-inducing AED, enzyme-inhibiting AED, glucuronidated AED, and mixed.
Most Pregnancies Were Unplanned
Of 794 pregnancies, 530 (66.8%) were unplanned and 264 (33.2%) were planned. Outcomes included 473 live births (59.6%), 141 induced abortions (17.8%), and 180 SFLs (22.7%). Among patients who did not have an induced abortion, SFL risk was higher if the pregnancy was unplanned (137 patients, 35.0%), compared with planned (43 patients, 16.4%) The risk ratio (RR) of SFL was 2.14. According to a regression analysis, SFL risk was higher for patients where “planning was entered alone” in unplanned pregnancies (odds ratio [OR], 2.75), as well as when adjusted for AED category, maternal age, and interpregnancy interval (OR, 3.57).
There was an association between maternal age (OR, 0.957) and risk of SFL. Risk was lower in the 18- to 27-year-olds (118 patients; 29.5%; RR, 0.57) and 28- to 37-year-olds (44 patients; 20.8%; RR, 0.40), compared with the under-18 group (15 patients, 51.7%). Risk of SFL was related to interpregnancy interval (OR, 2.878). This risk was greater if the interpregnancy interval was under one year (56 patients, 45.9%), compared with one year (56 patients, 22.8%) or higher (RR, 2.02).
The Epilepsy Foun-dation and Lundbeck funded the study. Dr. Herzog reports grants, and two coauthors received salary support from grants, from the two organizations.
—Jeff Craven
Suggested Reading
Herzog AG, Mandle HB, MacEachern DB. Association of unintended pregnancy with spontaneous fetal loss in women with epilepsy: findings of the Epilepsy Birth Control Registry. JAMA Neurol. 2018 Oct 15 [Epub ahead of print].
Unplanned pregnancy among women with epilepsy is associated with twice the risk of spontaneous fetal loss (SFL) when compared with women with epilepsy who planned their pregnancy, according to results from a retrospective study published online ahead of print October 15 in JAMA Neurology.
“This analysis adds the finding that unplanned pregnancy may increase the risk of SFL in women with epilepsy and identifies pregnancy planning, maternal age, and interpregnancy interval as significant modifiable variables,” said Andrew G. Herzog, MD, a neurologist at the Harvard Neuroendocrine Unit at Beth Israel Deaconess Medical Center in Wellesley, Massachusetts, and colleagues.
The Epilepsy Birth Control Registry
The researchers examined results from a web-based survey completed by 1,144 women in the Epilepsy Birth Control Registry (EBCR) between 2010 and 2014. Respondents provided data on contraception use, pregnancy history, and antiepileptic drug (AED) treatment. Patients were between ages 18 and 47 (mean, 28.5). Approximately 8.7% of the cohort were minorities, and 39.8% had household incomes of $25,000 or less.
Pregnancy history data included number of pregnancies, number of planned or unplanned pregnancies, AED type used during pregnancies, and pregnancy outcomes such as live birth, induced abortion, and SFL. Patients were categorized as receiving no therapy, monotherapy, or polytherapy. AED use was further subdivided into no AED, enzyme-inducing AED, non–enzyme-inducing AED, enzyme-inhibiting AED, glucuronidated AED, and mixed.
Most Pregnancies Were Unplanned
Of 794 pregnancies, 530 (66.8%) were unplanned and 264 (33.2%) were planned. Outcomes included 473 live births (59.6%), 141 induced abortions (17.8%), and 180 SFLs (22.7%). Among patients who did not have an induced abortion, SFL risk was higher if the pregnancy was unplanned (137 patients, 35.0%), compared with planned (43 patients, 16.4%) The risk ratio (RR) of SFL was 2.14. According to a regression analysis, SFL risk was higher for patients where “planning was entered alone” in unplanned pregnancies (odds ratio [OR], 2.75), as well as when adjusted for AED category, maternal age, and interpregnancy interval (OR, 3.57).
There was an association between maternal age (OR, 0.957) and risk of SFL. Risk was lower in the 18- to 27-year-olds (118 patients; 29.5%; RR, 0.57) and 28- to 37-year-olds (44 patients; 20.8%; RR, 0.40), compared with the under-18 group (15 patients, 51.7%). Risk of SFL was related to interpregnancy interval (OR, 2.878). This risk was greater if the interpregnancy interval was under one year (56 patients, 45.9%), compared with one year (56 patients, 22.8%) or higher (RR, 2.02).
The Epilepsy Foun-dation and Lundbeck funded the study. Dr. Herzog reports grants, and two coauthors received salary support from grants, from the two organizations.
—Jeff Craven
Suggested Reading
Herzog AG, Mandle HB, MacEachern DB. Association of unintended pregnancy with spontaneous fetal loss in women with epilepsy: findings of the Epilepsy Birth Control Registry. JAMA Neurol. 2018 Oct 15 [Epub ahead of print].