Neuromuscular Disorders

Electrical Stimulation Device Improves Motor Function

A person with a spinal cord injury can improve his or her ability to grip and move household objects by using an electrical stimulation device controlled by his or her thoughts, according to researchers. The study suggests that this new technology could one day enhance quality of life among people with disabilities and allow them to live more independently.

People with tetraplegia lose upper-limb strength and dexterity, which has a severe impact on their independence and quality of life. New technology that connects a person’s brain to an implanted functional electrical stimulation orthotics device on the hands could restore manual dexterity and grip strength, thus allowing him or her to perform simple daily tasks like holding a toothbrush without help.

“Individuals with cervical spinal cord injury identify recovery of the use of their hands as the single most impactful way that neurotechnology could change their lives,” said Marcie Bockbrader, MD, PhD, Assistant Professor of Physical Medicine and Rehabilitation at the Ohio State University Wexner Medical Center in Columbus. “Giving a person back [his or her] hands reduces dependence on others. It makes it possible to do the little things—like cutting food or opening a door—that are so essential to being able to take care of oneself.”

To test how well this thought-controlled brain–computer interface system works in real life to improve hand strength and dexterity, Dr. Bockbrader and her research team surgically implanted one of these devices into the hand of a 26-year-old man with C5-level, nonspastic tetraplegia following a spinal cord injury. He practiced using the device three times per week for four hours each session for more than 1,000 days. The research team administered standardized tests of upper-limb motor ability and functional participation to see how well the system improved his grip strength, quickness, and other basic skills.

Using this device improved the man’s upper-limb motor ability dramatically, according to several standardized tests. He improved his ability to grip and manipulate basic objects, and showed that he could perform ordinary tasks with his hands at the speed and dexterity levels of healthy individuals. He could move objects of different sizes and weights. With practice, he improved his ability to manipulate smaller household objects like a toothbrush or hairbrush. He also demonstrated that he could imagine different hand positions to proportionally adjust and control different hand movements.

“Our study demonstrated that patients with tetraplegia might be able to restore some of their skilled hand function with an implanted device that allows them to control movements with their own thoughts,” said Dr. Bockbrader. “Although this technology must be refined and tested before it can go from the laboratory to the public, it may one day offer people with disabilities a way to live and work more independently, and enable them to perform daily tasks.”

Concussion Recovery Varies Among Children

Not all children follow the same path to concussion recovery, nor do they have the same predictors for returning to normal activity, investigators reported. Their study also suggests that younger children should be considered separately from high-school students.

“Concussions are common among children, yet the literature is limited with regard to understanding trajectory of recovery after concussion, particularly in children with non-sports-related injuries and for younger children,” said Kaitlyn Chin, a second-year medical student at University of New England College of Osteopathic Medicine in Biddeford, Maine. “We were particularly interested in understanding how activity levels during recovery from concussion influence time to full recovery, to be able to identify modifiable factors to help guide concussion care. Previous studies have noted differences in the amount of time it takes children to recover from a concussion, and our team recently initiated a study to see if we can identify predictors associated with the amount of time between injury and when a child is medically cleared to return to activities which place the child at risk for reinjury.”

Ms. Chin’s team at Kennedy Krieger Institute in Baltimore reviewed the medical records of 178 children who were treated for concussions at an academically affiliated, rehabilitation-based clinic. The children had been medically cleared to return to play between September 2015 and February 2017. The children included in the study ranged in age from 6 to 17. A slight majority was younger than 14. Each child’s first visit to the clinic was within 60 days of his or her concussion.

The researchers reviewed each child’s record, noting when they had been approved to return to play. Then they looked at several other factors for each child, including sex, cause of the concussion (ie, sports or non-sports-related), number of symptoms, school attendance, and exercise status at the initial visit to the clinic. Finally, they considered these factors when the children were placed into two categories—children under 14 and children over 14—to examine potential differences related to age.

Ms. Chin’s team found that the number of symptoms affected how quickly all children were cleared to return to play. Fewer symptoms were associated with a faster return to play. For older children, male sex and higher level of exercise during recovery were associated with a faster return to play. For younger children, higher levels of exercise and school participation (eg, attending class and completing homework and tests) were associated with faster return to play.

Overall, this study shows that elementary and middle-school-aged children should be considered separately from high-school-aged students when considering risk factors for prolonged recovery from a concussion. Furthermore, Ms. Chin’s team found that school participation and exercise were not harmful and did not prolong recovery.

“Our study adds to the literature supporting that return to cognitive and safe physical activities while a child is still recovering from concussion does not prolong time to recovery,” said Ms. Chin. “Every child is different, and recovery is different for each concussion. [Therefore], a concussion recovery plan should be tailored for each child, and parents should seek help from the child’s pediatrician or other medical professionals for guiding care after a concussion.”

Medicine May Not Affect Concussion Recovery

Medications commonly prescribed to reduce symptoms of concussion may not affect recovery, said investigators. Sports medicine physicians commonly treat patients with concussion, so researchers in Utah investigated how some widely prescribed treatments might affect patients’ recovery.

“We really do not have much other than rest and gentle exercise to combat symptoms of concussion,” said Venessa Lee, MD, a physical medicine and rehabilitation resident at University of Utah Health in Salt Lake City. “Medications are commonly prescribed to help with symptoms, but there is little evidence that they help more than just time and rest.”

Although FDA has not approved any medication to treat concussion, physicians may prescribe medications like gabapentin or tricyclic antidepressants (TCAs) to help reduce symptoms during recovery. To examine whether these drugs benefit patients, Dr. Lee and her research team looked at 277 patients who had been diagnosed with concussion at a local academic sports medicine practice. At each of their visits to the clinic during recovery, patients reported their postconcussion symptoms. The research team used a score sheet to measure their symptoms, and they tracked scores of patients who had more than one visit to the clinic for as long as one year.

Patients were separated into three groups for the study: those not prescribed any medication, those prescribed gabapentin, and those prescribed one of two TCAs, amitriptyline or nortriptyline. Based on self-reported information, investigators gave each patient a score for two factors of postconcussion recovery: headaches and a combination of 22 symptoms, including headaches. Each score was on a scale of 0 to 6.

After they adjusted scores for gender and age, Dr. Lee’s team found that headache and combined symptoms scores decreased significantly within days after the first clinic visit for all three groups of patients—those who had taken no medications, those who had been prescribed gabapentin, and those who had been prescribed a TCA. Patients who had been prescribed any of the medications had significantly higher scores for headaches and overall postconcussion symptoms to begin with, but no one type of medication had any better or worse effect over the duration of the study.

“Patients’ symptoms improve with time after a concussion,” said Dr. Lee. “When we looked at [patients who received] gabapentin and TCAs, their symptoms improved over time as well, but similar to those that did not receive a medication.”

Based on this study, neither gabapentin nor TCAs appear to provide any additional benefit for postconcussion recovery. With this information, patients may be able to avoid taking unnecessary medications as they recover from concussions. Patients should speak with a physician about their symptoms after a concussion, said Dr. Lee.

“Though the two medications we studied did not show a profound improvement in our analysis, this was a retrospective study … which has many drawbacks and limitations. We need to do more research to really find the best method for improving postconcussive symptoms.”

Ballet Helps Children with Musculoskeletal and Neurologic Conditions

Adaptive ballet classes provide functional improvement and social interactions for children with musculoskeletal and neurologic conditions, according to researchers. This type of arts-based adaptive therapy is a promising expansion to successful adaptive sports therapies, said the investigators.

“While great strides have been made in adaptive sports, there are still relatively few opportunities in the arts for people with disabilities,” said Sarah Stauder, MD, a physician at the Medical College of Wisconsin in Milwaukee. “Because of this [scarcity], we wanted to evaluate the effect of adaptive ballet on the physical, emotional, social, and academic function of children with physical impairments. The program is a collaboration between a children’s hospital and a metropolitan ballet company that brings together professional dancers, pediatric doctors, physical and occupational therapists, and children with physical disabilities for a series of dance classes.”

The goal of the study was to see whether a weekly, 45-mintute ballet class with 15 minutes of ballet education over five consecutive weeks would improve the children’s balance, physical functions, social skills, and overall quality of life. Eighteen children (17 girls) from ages 5 to 14, took part in the class. Assessments of each child were performed before and after the series of classes using the Pediatric Quality of Life Inventory, the PEDI-CAT survey, and the Pediatric Balance Scale. Finally, a questionnaire was used to assess each child’s success in achieving individual goals set for the class.

At the end of the five weeks, 94% of participants reached their individual goals for the ballet program. PEDI-CAT scores improved after completion of the program, and the program was most beneficial to participants who had lower functioning and quality of life at the beginning of the program. Finally, the researchers noticed an average improvement in balance among the participants.

“Adaptive programs like the one studied here give children the opportunity to participate in activities they otherwise would have no way to do,” said Dr. Stauder. “More specifically, these dance classes instilled a sense of pride and confidence in the children while improving their physical functioning and quality of life. Our study should open the door to more arts-based therapy for children. It is an effective and enjoyable way for patients to get the therapy they need. When kids are active in an activity that interests them, they naturally make greater strides, and we were able to see this in their day-to-day function.”

Genetic Risk Score Predicts TBI Outcomes

A genetic risk score could help predict a patient’s quality of life after a traumatic brain injury (TBI), said researchers. One day, physicians could have a simple method to forecast a patient’s recovery and personalize therapy to maximize quality of life.

“Gene pathways can influence all of our biologic functions and risk for many health outcomes,” said Mark Linsenmeyer, MD, a resident physician at the University of Pittsburgh Medical Center. “Each person has a unique inherited genetic code. By studying one gene pathway in a large group of people with the same disease or health problem, we hope to unlock clues to why some people have different outcomes than others. This knowledge may be used to help physicians make the best treatment choice for each person.”

Dr. Linsenmeyer and colleagues set out to investigate how genes that affect the brain’s dopamine pathways could predict recovery in people with moderate-to-severe TBI. The team recruited 94 adults with TBI from a level-1 trauma center. They focused on the following five genes in the dopamine pathways: COMT rs4680, VMAT2 rs363226, DRD2 rs6279, ANKK1 Taq1a, and MAOA VNTR. They defined which risk genotypes were associated with lower average scores on surveys filled out by patients with TBI to describe their overall quality of life at six and 12 months after their injuries.

The researchers analyzed how individual variants of each of these five genes could affect patients’ quality of life, and then generated a weighted gene risk score as a measure to reflect cumulative risk represented by all genotypes included in the score. Based on available literature about dopamine pathway genetics, they predicted that their gene risk score calculation tool should be specific to a patient’s sex.

Before they calculated gene risk scores, the research team noticed that only COMT could significantly predict quality of life for a subset of patients six months after their injuries. After generating sex-specific gene risk scores, they found that variants of all five genes on the dopamine pathway could meaningfully contribute to a gene risk score that was highly predictive of quality of life after six months for patients of both sexes with TBI, and also predictive of quality of life after one year for women.

Electrical Stimulation Device Improves Motor Function

A person with a spinal cord injury can improve his or her ability to grip and move household objects by using an electrical stimulation device controlled by his or her thoughts, according to researchers. The study suggests that this new technology could one day enhance quality of life among people with disabilities and allow them to live more independently.

People with tetraplegia lose upper-limb strength and dexterity, which has a severe impact on their independence and quality of life. New technology that connects a person’s brain to an implanted functional electrical stimulation orthotics device on the hands could restore manual dexterity and grip strength, thus allowing him or her to perform simple daily tasks like holding a toothbrush without help.

“Individuals with cervical spinal cord injury identify recovery of the use of their hands as the single most impactful way that neurotechnology could change their lives,” said Marcie Bockbrader, MD, PhD, Assistant Professor of Physical Medicine and Rehabilitation at the Ohio State University Wexner Medical Center in Columbus. “Giving a person back [his or her] hands reduces dependence on others. It makes it possible to do the little things—like cutting food or opening a door—that are so essential to being able to take care of oneself.”

To test how well this thought-controlled brain–computer interface system works in real life to improve hand strength and dexterity, Dr. Bockbrader and her research team surgically implanted one of these devices into the hand of a 26-year-old man with C5-level, nonspastic tetraplegia following a spinal cord injury. He practiced using the device three times per week for four hours each session for more than 1,000 days. The research team administered standardized tests of upper-limb motor ability and functional participation to see how well the system improved his grip strength, quickness, and other basic skills.

Using this device improved the man’s upper-limb motor ability dramatically, according to several standardized tests. He improved his ability to grip and manipulate basic objects, and showed that he could perform ordinary tasks with his hands at the speed and dexterity levels of healthy individuals. He could move objects of different sizes and weights. With practice, he improved his ability to manipulate smaller household objects like a toothbrush or hairbrush. He also demonstrated that he could imagine different hand positions to proportionally adjust and control different hand movements.

“Our study demonstrated that patients with tetraplegia might be able to restore some of their skilled hand function with an implanted device that allows them to control movements with their own thoughts,” said Dr. Bockbrader. “Although this technology must be refined and tested before it can go from the laboratory to the public, it may one day offer people with disabilities a way to live and work more independently, and enable them to perform daily tasks.”

Concussion Recovery Varies Among Children

Not all children follow the same path to concussion recovery, nor do they have the same predictors for returning to normal activity, investigators reported. Their study also suggests that younger children should be considered separately from high-school students.

“Concussions are common among children, yet the literature is limited with regard to understanding trajectory of recovery after concussion, particularly in children with non-sports-related injuries and for younger children,” said Kaitlyn Chin, a second-year medical student at University of New England College of Osteopathic Medicine in Biddeford, Maine. “We were particularly interested in understanding how activity levels during recovery from concussion influence time to full recovery, to be able to identify modifiable factors to help guide concussion care. Previous studies have noted differences in the amount of time it takes children to recover from a concussion, and our team recently initiated a study to see if we can identify predictors associated with the amount of time between injury and when a child is medically cleared to return to activities which place the child at risk for reinjury.”

Ms. Chin’s team at Kennedy Krieger Institute in Baltimore reviewed the medical records of 178 children who were treated for concussions at an academically affiliated, rehabilitation-based clinic. The children had been medically cleared to return to play between September 2015 and February 2017. The children included in the study ranged in age from 6 to 17. A slight majority was younger than 14. Each child’s first visit to the clinic was within 60 days of his or her concussion.

The researchers reviewed each child’s record, noting when they had been approved to return to play. Then they looked at several other factors for each child, including sex, cause of the concussion (ie, sports or non-sports-related), number of symptoms, school attendance, and exercise status at the initial visit to the clinic. Finally, they considered these factors when the children were placed into two categories—children under 14 and children over 14—to examine potential differences related to age.

Ms. Chin’s team found that the number of symptoms affected how quickly all children were cleared to return to play. Fewer symptoms were associated with a faster return to play. For older children, male sex and higher level of exercise during recovery were associated with a faster return to play. For younger children, higher levels of exercise and school participation (eg, attending class and completing homework and tests) were associated with faster return to play.

Overall, this study shows that elementary and middle-school-aged children should be considered separately from high-school-aged students when considering risk factors for prolonged recovery from a concussion. Furthermore, Ms. Chin’s team found that school participation and exercise were not harmful and did not prolong recovery.

“Our study adds to the literature supporting that return to cognitive and safe physical activities while a child is still recovering from concussion does not prolong time to recovery,” said Ms. Chin. “Every child is different, and recovery is different for each concussion. [Therefore], a concussion recovery plan should be tailored for each child, and parents should seek help from the child’s pediatrician or other medical professionals for guiding care after a concussion.”

Medicine May Not Affect Concussion Recovery

Medications commonly prescribed to reduce symptoms of concussion may not affect recovery, said investigators. Sports medicine physicians commonly treat patients with concussion, so researchers in Utah investigated how some widely prescribed treatments might affect patients’ recovery.

“We really do not have much other than rest and gentle exercise to combat symptoms of concussion,” said Venessa Lee, MD, a physical medicine and rehabilitation resident at University of Utah Health in Salt Lake City. “Medications are commonly prescribed to help with symptoms, but there is little evidence that they help more than just time and rest.”

Although FDA has not approved any medication to treat concussion, physicians may prescribe medications like gabapentin or tricyclic antidepressants (TCAs) to help reduce symptoms during recovery. To examine whether these drugs benefit patients, Dr. Lee and her research team looked at 277 patients who had been diagnosed with concussion at a local academic sports medicine practice. At each of their visits to the clinic during recovery, patients reported their postconcussion symptoms. The research team used a score sheet to measure their symptoms, and they tracked scores of patients who had more than one visit to the clinic for as long as one year.

Patients were separated into three groups for the study: those not prescribed any medication, those prescribed gabapentin, and those prescribed one of two TCAs, amitriptyline or nortriptyline. Based on self-reported information, investigators gave each patient a score for two factors of postconcussion recovery: headaches and a combination of 22 symptoms, including headaches. Each score was on a scale of 0 to 6.

After they adjusted scores for gender and age, Dr. Lee’s team found that headache and combined symptoms scores decreased significantly within days after the first clinic visit for all three groups of patients—those who had taken no medications, those who had been prescribed gabapentin, and those who had been prescribed a TCA. Patients who had been prescribed any of the medications had significantly higher scores for headaches and overall postconcussion symptoms to begin with, but no one type of medication had any better or worse effect over the duration of the study.

“Patients’ symptoms improve with time after a concussion,” said Dr. Lee. “When we looked at [patients who received] gabapentin and TCAs, their symptoms improved over time as well, but similar to those that did not receive a medication.”

Based on this study, neither gabapentin nor TCAs appear to provide any additional benefit for postconcussion recovery. With this information, patients may be able to avoid taking unnecessary medications as they recover from concussions. Patients should speak with a physician about their symptoms after a concussion, said Dr. Lee.

“Though the two medications we studied did not show a profound improvement in our analysis, this was a retrospective study … which has many drawbacks and limitations. We need to do more research to really find the best method for improving postconcussive symptoms.”

Ballet Helps Children with Musculoskeletal and Neurologic Conditions

Adaptive ballet classes provide functional improvement and social interactions for children with musculoskeletal and neurologic conditions, according to researchers. This type of arts-based adaptive therapy is a promising expansion to successful adaptive sports therapies, said the investigators.

“While great strides have been made in adaptive sports, there are still relatively few opportunities in the arts for people with disabilities,” said Sarah Stauder, MD, a physician at the Medical College of Wisconsin in Milwaukee. “Because of this [scarcity], we wanted to evaluate the effect of adaptive ballet on the physical, emotional, social, and academic function of children with physical impairments. The program is a collaboration between a children’s hospital and a metropolitan ballet company that brings together professional dancers, pediatric doctors, physical and occupational therapists, and children with physical disabilities for a series of dance classes.”

The goal of the study was to see whether a weekly, 45-mintute ballet class with 15 minutes of ballet education over five consecutive weeks would improve the children’s balance, physical functions, social skills, and overall quality of life. Eighteen children (17 girls) from ages 5 to 14, took part in the class. Assessments of each child were performed before and after the series of classes using the Pediatric Quality of Life Inventory, the PEDI-CAT survey, and the Pediatric Balance Scale. Finally, a questionnaire was used to assess each child’s success in achieving individual goals set for the class.

At the end of the five weeks, 94% of participants reached their individual goals for the ballet program. PEDI-CAT scores improved after completion of the program, and the program was most beneficial to participants who had lower functioning and quality of life at the beginning of the program. Finally, the researchers noticed an average improvement in balance among the participants.

“Adaptive programs like the one studied here give children the opportunity to participate in activities they otherwise would have no way to do,” said Dr. Stauder. “More specifically, these dance classes instilled a sense of pride and confidence in the children while improving their physical functioning and quality of life. Our study should open the door to more arts-based therapy for children. It is an effective and enjoyable way for patients to get the therapy they need. When kids are active in an activity that interests them, they naturally make greater strides, and we were able to see this in their day-to-day function.”

Genetic Risk Score Predicts TBI Outcomes

A genetic risk score could help predict a patient’s quality of life after a traumatic brain injury (TBI), said researchers. One day, physicians could have a simple method to forecast a patient’s recovery and personalize therapy to maximize quality of life.

“Gene pathways can influence all of our biologic functions and risk for many health outcomes,” said Mark Linsenmeyer, MD, a resident physician at the University of Pittsburgh Medical Center. “Each person has a unique inherited genetic code. By studying one gene pathway in a large group of people with the same disease or health problem, we hope to unlock clues to why some people have different outcomes than others. This knowledge may be used to help physicians make the best treatment choice for each person.”

Dr. Linsenmeyer and colleagues set out to investigate how genes that affect the brain’s dopamine pathways could predict recovery in people with moderate-to-severe TBI. The team recruited 94 adults with TBI from a level-1 trauma center. They focused on the following five genes in the dopamine pathways: COMT rs4680, VMAT2 rs363226, DRD2 rs6279, ANKK1 Taq1a, and MAOA VNTR. They defined which risk genotypes were associated with lower average scores on surveys filled out by patients with TBI to describe their overall quality of life at six and 12 months after their injuries.

The researchers analyzed how individual variants of each of these five genes could affect patients’ quality of life, and then generated a weighted gene risk score as a measure to reflect cumulative risk represented by all genotypes included in the score. Based on available literature about dopamine pathway genetics, they predicted that their gene risk score calculation tool should be specific to a patient’s sex.

Before they calculated gene risk scores, the research team noticed that only COMT could significantly predict quality of life for a subset of patients six months after their injuries. After generating sex-specific gene risk scores, they found that variants of all five genes on the dopamine pathway could meaningfully contribute to a gene risk score that was highly predictive of quality of life after six months for patients of both sexes with TBI, and also predictive of quality of life after one year for women.

Electrical Stimulation Device Improves Motor Function

A person with a spinal cord injury can improve his or her ability to grip and move household objects by using an electrical stimulation device controlled by his or her thoughts, according to researchers. The study suggests that this new technology could one day enhance quality of life among people with disabilities and allow them to live more independently.

People with tetraplegia lose upper-limb strength and dexterity, which has a severe impact on their independence and quality of life. New technology that connects a person’s brain to an implanted functional electrical stimulation orthotics device on the hands could restore manual dexterity and grip strength, thus allowing him or her to perform simple daily tasks like holding a toothbrush without help.

“Individuals with cervical spinal cord injury identify recovery of the use of their hands as the single most impactful way that neurotechnology could change their lives,” said Marcie Bockbrader, MD, PhD, Assistant Professor of Physical Medicine and Rehabilitation at the Ohio State University Wexner Medical Center in Columbus. “Giving a person back [his or her] hands reduces dependence on others. It makes it possible to do the little things—like cutting food or opening a door—that are so essential to being able to take care of oneself.”

To test how well this thought-controlled brain–computer interface system works in real life to improve hand strength and dexterity, Dr. Bockbrader and her research team surgically implanted one of these devices into the hand of a 26-year-old man with C5-level, nonspastic tetraplegia following a spinal cord injury. He practiced using the device three times per week for four hours each session for more than 1,000 days. The research team administered standardized tests of upper-limb motor ability and functional participation to see how well the system improved his grip strength, quickness, and other basic skills.

Using this device improved the man’s upper-limb motor ability dramatically, according to several standardized tests. He improved his ability to grip and manipulate basic objects, and showed that he could perform ordinary tasks with his hands at the speed and dexterity levels of healthy individuals. He could move objects of different sizes and weights. With practice, he improved his ability to manipulate smaller household objects like a toothbrush or hairbrush. He also demonstrated that he could imagine different hand positions to proportionally adjust and control different hand movements.

“Our study demonstrated that patients with tetraplegia might be able to restore some of their skilled hand function with an implanted device that allows them to control movements with their own thoughts,” said Dr. Bockbrader. “Although this technology must be refined and tested before it can go from the laboratory to the public, it may one day offer people with disabilities a way to live and work more independently, and enable them to perform daily tasks.”

Concussion Recovery Varies Among Children

Not all children follow the same path to concussion recovery, nor do they have the same predictors for returning to normal activity, investigators reported. Their study also suggests that younger children should be considered separately from high-school students.

“Concussions are common among children, yet the literature is limited with regard to understanding trajectory of recovery after concussion, particularly in children with non-sports-related injuries and for younger children,” said Kaitlyn Chin, a second-year medical student at University of New England College of Osteopathic Medicine in Biddeford, Maine. “We were particularly interested in understanding how activity levels during recovery from concussion influence time to full recovery, to be able to identify modifiable factors to help guide concussion care. Previous studies have noted differences in the amount of time it takes children to recover from a concussion, and our team recently initiated a study to see if we can identify predictors associated with the amount of time between injury and when a child is medically cleared to return to activities which place the child at risk for reinjury.”

Ms. Chin’s team at Kennedy Krieger Institute in Baltimore reviewed the medical records of 178 children who were treated for concussions at an academically affiliated, rehabilitation-based clinic. The children had been medically cleared to return to play between September 2015 and February 2017. The children included in the study ranged in age from 6 to 17. A slight majority was younger than 14. Each child’s first visit to the clinic was within 60 days of his or her concussion.

The researchers reviewed each child’s record, noting when they had been approved to return to play. Then they looked at several other factors for each child, including sex, cause of the concussion (ie, sports or non-sports-related), number of symptoms, school attendance, and exercise status at the initial visit to the clinic. Finally, they considered these factors when the children were placed into two categories—children under 14 and children over 14—to examine potential differences related to age.

Ms. Chin’s team found that the number of symptoms affected how quickly all children were cleared to return to play. Fewer symptoms were associated with a faster return to play. For older children, male sex and higher level of exercise during recovery were associated with a faster return to play. For younger children, higher levels of exercise and school participation (eg, attending class and completing homework and tests) were associated with faster return to play.

Overall, this study shows that elementary and middle-school-aged children should be considered separately from high-school-aged students when considering risk factors for prolonged recovery from a concussion. Furthermore, Ms. Chin’s team found that school participation and exercise were not harmful and did not prolong recovery.

“Our study adds to the literature supporting that return to cognitive and safe physical activities while a child is still recovering from concussion does not prolong time to recovery,” said Ms. Chin. “Every child is different, and recovery is different for each concussion. [Therefore], a concussion recovery plan should be tailored for each child, and parents should seek help from the child’s pediatrician or other medical professionals for guiding care after a concussion.”

Medicine May Not Affect Concussion Recovery

Medications commonly prescribed to reduce symptoms of concussion may not affect recovery, said investigators. Sports medicine physicians commonly treat patients with concussion, so researchers in Utah investigated how some widely prescribed treatments might affect patients’ recovery.

“We really do not have much other than rest and gentle exercise to combat symptoms of concussion,” said Venessa Lee, MD, a physical medicine and rehabilitation resident at University of Utah Health in Salt Lake City. “Medications are commonly prescribed to help with symptoms, but there is little evidence that they help more than just time and rest.”

Although FDA has not approved any medication to treat concussion, physicians may prescribe medications like gabapentin or tricyclic antidepressants (TCAs) to help reduce symptoms during recovery. To examine whether these drugs benefit patients, Dr. Lee and her research team looked at 277 patients who had been diagnosed with concussion at a local academic sports medicine practice. At each of their visits to the clinic during recovery, patients reported their postconcussion symptoms. The research team used a score sheet to measure their symptoms, and they tracked scores of patients who had more than one visit to the clinic for as long as one year.

Patients were separated into three groups for the study: those not prescribed any medication, those prescribed gabapentin, and those prescribed one of two TCAs, amitriptyline or nortriptyline. Based on self-reported information, investigators gave each patient a score for two factors of postconcussion recovery: headaches and a combination of 22 symptoms, including headaches. Each score was on a scale of 0 to 6.

After they adjusted scores for gender and age, Dr. Lee’s team found that headache and combined symptoms scores decreased significantly within days after the first clinic visit for all three groups of patients—those who had taken no medications, those who had been prescribed gabapentin, and those who had been prescribed a TCA. Patients who had been prescribed any of the medications had significantly higher scores for headaches and overall postconcussion symptoms to begin with, but no one type of medication had any better or worse effect over the duration of the study.

“Patients’ symptoms improve with time after a concussion,” said Dr. Lee. “When we looked at [patients who received] gabapentin and TCAs, their symptoms improved over time as well, but similar to those that did not receive a medication.”

Based on this study, neither gabapentin nor TCAs appear to provide any additional benefit for postconcussion recovery. With this information, patients may be able to avoid taking unnecessary medications as they recover from concussions. Patients should speak with a physician about their symptoms after a concussion, said Dr. Lee.

“Though the two medications we studied did not show a profound improvement in our analysis, this was a retrospective study … which has many drawbacks and limitations. We need to do more research to really find the best method for improving postconcussive symptoms.”

Ballet Helps Children with Musculoskeletal and Neurologic Conditions

Adaptive ballet classes provide functional improvement and social interactions for children with musculoskeletal and neurologic conditions, according to researchers. This type of arts-based adaptive therapy is a promising expansion to successful adaptive sports therapies, said the investigators.

“While great strides have been made in adaptive sports, there are still relatively few opportunities in the arts for people with disabilities,” said Sarah Stauder, MD, a physician at the Medical College of Wisconsin in Milwaukee. “Because of this [scarcity], we wanted to evaluate the effect of adaptive ballet on the physical, emotional, social, and academic function of children with physical impairments. The program is a collaboration between a children’s hospital and a metropolitan ballet company that brings together professional dancers, pediatric doctors, physical and occupational therapists, and children with physical disabilities for a series of dance classes.”

The goal of the study was to see whether a weekly, 45-mintute ballet class with 15 minutes of ballet education over five consecutive weeks would improve the children’s balance, physical functions, social skills, and overall quality of life. Eighteen children (17 girls) from ages 5 to 14, took part in the class. Assessments of each child were performed before and after the series of classes using the Pediatric Quality of Life Inventory, the PEDI-CAT survey, and the Pediatric Balance Scale. Finally, a questionnaire was used to assess each child’s success in achieving individual goals set for the class.

At the end of the five weeks, 94% of participants reached their individual goals for the ballet program. PEDI-CAT scores improved after completion of the program, and the program was most beneficial to participants who had lower functioning and quality of life at the beginning of the program. Finally, the researchers noticed an average improvement in balance among the participants.

“Adaptive programs like the one studied here give children the opportunity to participate in activities they otherwise would have no way to do,” said Dr. Stauder. “More specifically, these dance classes instilled a sense of pride and confidence in the children while improving their physical functioning and quality of life. Our study should open the door to more arts-based therapy for children. It is an effective and enjoyable way for patients to get the therapy they need. When kids are active in an activity that interests them, they naturally make greater strides, and we were able to see this in their day-to-day function.”

Genetic Risk Score Predicts TBI Outcomes

A genetic risk score could help predict a patient’s quality of life after a traumatic brain injury (TBI), said researchers. One day, physicians could have a simple method to forecast a patient’s recovery and personalize therapy to maximize quality of life.

“Gene pathways can influence all of our biologic functions and risk for many health outcomes,” said Mark Linsenmeyer, MD, a resident physician at the University of Pittsburgh Medical Center. “Each person has a unique inherited genetic code. By studying one gene pathway in a large group of people with the same disease or health problem, we hope to unlock clues to why some people have different outcomes than others. This knowledge may be used to help physicians make the best treatment choice for each person.”

Dr. Linsenmeyer and colleagues set out to investigate how genes that affect the brain’s dopamine pathways could predict recovery in people with moderate-to-severe TBI. The team recruited 94 adults with TBI from a level-1 trauma center. They focused on the following five genes in the dopamine pathways: COMT rs4680, VMAT2 rs363226, DRD2 rs6279, ANKK1 Taq1a, and MAOA VNTR. They defined which risk genotypes were associated with lower average scores on surveys filled out by patients with TBI to describe their overall quality of life at six and 12 months after their injuries.

The researchers analyzed how individual variants of each of these five genes could affect patients’ quality of life, and then generated a weighted gene risk score as a measure to reflect cumulative risk represented by all genotypes included in the score. Based on available literature about dopamine pathway genetics, they predicted that their gene risk score calculation tool should be specific to a patient’s sex.

Before they calculated gene risk scores, the research team noticed that only COMT could significantly predict quality of life for a subset of patients six months after their injuries. After generating sex-specific gene risk scores, they found that variants of all five genes on the dopamine pathway could meaningfully contribute to a gene risk score that was highly predictive of quality of life after six months for patients of both sexes with TBI, and also predictive of quality of life after one year for women.

Mogamulizumab reduced the number of HTLV-1–infected cells and levels of inflammatory markers in patients with HTLV-1–associated myelopathy–tropical spastic paraparesis (HAM-TSP) in a recently reported phase 1-2a study.

Treatment with the anti-CCR4 monoclonal antibody also reduced spasticity and motor disability in some patients with HAM-TSP, according to results published in the New England Journal of Medicine.

Rash was the main side effect of treatment, but the 21-patient trial was “too small and too short to evaluate the clinical safety of mogamulizumab,” said lead author Tomoo Sato, MD, PhD, of the Department of Rare Diseases Research, St. Marianna University, Kawasaki, Japan, and colleagues.

HAM-TSP is a chronic, progressive, and debilitating neuroinflammatory disorder primarily seen in equatorial regions, according to the National Institute of Neurological Disorders and Stroke.

HTVL-1 infects primarily CCR4+ T cells, and mogamulizumab is an anti-CCR4 antibody that targets those affected cells, according to Dr. Sato and colleagues.

Current treatment for HAM-TSP is typically focused on suppressing inflammation with glucocorticoid or interferon-alpha rather than attacking infected cells and reducing proviral load.

The current investigator-initiated study included 21 patients with glucocorticoid-refractory HAM-TSP. In phase 1 of the study, patients received a single intravenous infusion of mogamulizumab and were observed for 85 days. Of those patients, 19 continued to phase 2a and received infusions at 8- or 12-week intervals for a total of 24 weeks.

Treatment resulted in a reduction of 64.9% (95% confidence interval, 51.7-78.1) in proviral load in peripheral-blood mononuclear cells by day 15 postinfusion. Reductions in inflammatory markers at day 29 were also reported, including a 37.3% decrease in CXCL10 levels and a 21.0% decrease in neopterin levels.

In all, 79% of patients had a reduction in spasticity, and 32% had decreased motor disability after treatment.

“The clinical effects appeared very quickly, long before any changes in the markers of inflammation in the central nervous system,” the investigators said.

Grade 1 or 2 rash was seen in 48% of patients, while lymphopenia and leukopenia were seen in 33% of patients each.

A phase 2 study is ongoing to evaluate the long-term safety and efficacy of mogamulizumab in patients with HAM-TSP.

The study was supported by the Japan Agency for Medical Research and Development and by the Ministry of Health, Labor, and Welfare. Two of the coauthors reported patents related to treating HTLV-I–related myelopathy.

SOURCE: Sato T et al. N Engl J Med. 2018;378:529-38.

Mogamulizumab reduced the number of HTLV-1–infected cells and levels of inflammatory markers in patients with HTLV-1–associated myelopathy–tropical spastic paraparesis (HAM-TSP) in a recently reported phase 1-2a study.

Treatment with the anti-CCR4 monoclonal antibody also reduced spasticity and motor disability in some patients with HAM-TSP, according to results published in the New England Journal of Medicine.

Rash was the main side effect of treatment, but the 21-patient trial was “too small and too short to evaluate the clinical safety of mogamulizumab,” said lead author Tomoo Sato, MD, PhD, of the Department of Rare Diseases Research, St. Marianna University, Kawasaki, Japan, and colleagues.

HAM-TSP is a chronic, progressive, and debilitating neuroinflammatory disorder primarily seen in equatorial regions, according to the National Institute of Neurological Disorders and Stroke.

HTVL-1 infects primarily CCR4+ T cells, and mogamulizumab is an anti-CCR4 antibody that targets those affected cells, according to Dr. Sato and colleagues.

Current treatment for HAM-TSP is typically focused on suppressing inflammation with glucocorticoid or interferon-alpha rather than attacking infected cells and reducing proviral load.

The current investigator-initiated study included 21 patients with glucocorticoid-refractory HAM-TSP. In phase 1 of the study, patients received a single intravenous infusion of mogamulizumab and were observed for 85 days. Of those patients, 19 continued to phase 2a and received infusions at 8- or 12-week intervals for a total of 24 weeks.

Treatment resulted in a reduction of 64.9% (95% confidence interval, 51.7-78.1) in proviral load in peripheral-blood mononuclear cells by day 15 postinfusion. Reductions in inflammatory markers at day 29 were also reported, including a 37.3% decrease in CXCL10 levels and a 21.0% decrease in neopterin levels.

In all, 79% of patients had a reduction in spasticity, and 32% had decreased motor disability after treatment.

“The clinical effects appeared very quickly, long before any changes in the markers of inflammation in the central nervous system,” the investigators said.

Grade 1 or 2 rash was seen in 48% of patients, while lymphopenia and leukopenia were seen in 33% of patients each.

A phase 2 study is ongoing to evaluate the long-term safety and efficacy of mogamulizumab in patients with HAM-TSP.

The study was supported by the Japan Agency for Medical Research and Development and by the Ministry of Health, Labor, and Welfare. Two of the coauthors reported patents related to treating HTLV-I–related myelopathy.

SOURCE: Sato T et al. N Engl J Med. 2018;378:529-38.

Mogamulizumab reduced the number of HTLV-1–infected cells and levels of inflammatory markers in patients with HTLV-1–associated myelopathy–tropical spastic paraparesis (HAM-TSP) in a recently reported phase 1-2a study.

Treatment with the anti-CCR4 monoclonal antibody also reduced spasticity and motor disability in some patients with HAM-TSP, according to results published in the New England Journal of Medicine.

Rash was the main side effect of treatment, but the 21-patient trial was “too small and too short to evaluate the clinical safety of mogamulizumab,” said lead author Tomoo Sato, MD, PhD, of the Department of Rare Diseases Research, St. Marianna University, Kawasaki, Japan, and colleagues.

HAM-TSP is a chronic, progressive, and debilitating neuroinflammatory disorder primarily seen in equatorial regions, according to the National Institute of Neurological Disorders and Stroke.

HTVL-1 infects primarily CCR4+ T cells, and mogamulizumab is an anti-CCR4 antibody that targets those affected cells, according to Dr. Sato and colleagues.

Current treatment for HAM-TSP is typically focused on suppressing inflammation with glucocorticoid or interferon-alpha rather than attacking infected cells and reducing proviral load.

The current investigator-initiated study included 21 patients with glucocorticoid-refractory HAM-TSP. In phase 1 of the study, patients received a single intravenous infusion of mogamulizumab and were observed for 85 days. Of those patients, 19 continued to phase 2a and received infusions at 8- or 12-week intervals for a total of 24 weeks.

Treatment resulted in a reduction of 64.9% (95% confidence interval, 51.7-78.1) in proviral load in peripheral-blood mononuclear cells by day 15 postinfusion. Reductions in inflammatory markers at day 29 were also reported, including a 37.3% decrease in CXCL10 levels and a 21.0% decrease in neopterin levels.

In all, 79% of patients had a reduction in spasticity, and 32% had decreased motor disability after treatment.

“The clinical effects appeared very quickly, long before any changes in the markers of inflammation in the central nervous system,” the investigators said.

Grade 1 or 2 rash was seen in 48% of patients, while lymphopenia and leukopenia were seen in 33% of patients each.

A phase 2 study is ongoing to evaluate the long-term safety and efficacy of mogamulizumab in patients with HAM-TSP.

The study was supported by the Japan Agency for Medical Research and Development and by the Ministry of Health, Labor, and Welfare. Two of the coauthors reported patents related to treating HTLV-I–related myelopathy.

SOURCE: Sato T et al. N Engl J Med. 2018;378:529-38.

Patients with spastic arm paralysis who receive a contralateral C7 nerve graft from their nonparalyzed side to their paralyzed side may have greater improvement in arm function and reduction in spasticity after a year, compared with patients who undergo rehabilitation alone, according to research published January 4 in the New England Journal of Medicine.

The researchers randomly assigned 36 patients who had had unilateral arm paralysis for at least five years to either surgical C7 nerve transfer plus rehabilitation or rehabilitation alone. Participants in the surgery group had an average increase of 17.7 points on the Fugl-Meyer score, while those in the rehabilitation-only group had an average increase of 2.6 points.

To evaluate spasticity, the researchers used the Modified Ashworth Scale, which is scored from 0 to 5. A higher score indicates greater spasticity. Patients who received surgery had improvement from baseline in all five areas measured, and none worsened. The smallest difference between the two groups was in thumb extension. On this measure, 15 surgery patients had a one- or two-unit improvement and three had no change, while seven controls had a one- or two-unit improvement, seven had no improvement, and four had a one-unit worsening. At one year, 16 (89%) patients in the surgery group were able to accomplish three or more of the functional tasks that researchers gave them, whereas none of the controls could do so.

“The majority of clinical improvements coincided with physiologic evidence of connectivity between the hemisphere on the side of the donor nerve and the paralyzed arm,” said lead author Mou-Xiong Zheng, MD, PhD, a hand surgeon at Huashan Hospital at Fudan University in Shanghai, and colleagues.

A Modification to a Previous Surgical Method

Damage to the contralateral cerebral hemisphere after stroke arises from interruption of the inhibitory activity of upper motor neurons. This interruption causes spasticity, along with hand weakness and loss of fractionated fine motor control. In previous studies, researchers have observed activity in the cerebral hemisphere on the same side of paralysis during stroke recovery, but Dr. Zheng and coauthors asserted that connections between the hand and that part of the brain are “sparse,” thus limiting the body’s ability to compensate for spasticity and functional loss.

The latest findings are consistent with those of earlier studies, including one by Dr. Zheng’s coauthors that suggested that the paralyzed hand could be connected to the unaffected hemisphere by transferring a cervical spine nerve from the nonparalyzed side. Researchers previously found this treatment effective for injuries of the brachial plexus. Of the five nerves of the brachial plexus, Dr. Zheng and coauthors chose the C7 nerve because it accounts for about 20% of the nerve fibers in the brachial bundle. Severing the nerve typically results in transient weakness and numbness in the arm or leg on the same side. When they evaluated the hand on the side of the donor graft, the researchers found no significant changes in power, tactile threshold, or two-point discrimination as a result of surgery.

The authors’ surgical approach was a modification of the C7 nerve transfer method that Dr. Zheng and coauthors had previously reported. The operation involved making an incision at the superior aspect of the sternum, mobilizing the donor C7 nerve on the nonparalyzed side, and routing it between the spinal column and esophagus. Then, an anastomosis was performed directly with the C7 nerve on the paralyzed side.

Rehabilitation therapy for the surgery group and controls was identical. Rehabilitation sessions took place four times weekly for 12 months at a single facility, although surgery patients wore an immobilizing cast after their operations.

The nature of the study population (ie, men of various ages with various causes of the underlying cerebral lesions) makes it difficult to draw general conclusions from the findings, Dr. Zheng and coauthors noted. “A larger cohort, followed for a longer period, would be necessary to determine whether cervical nerve transfer results in safe, consistent, and long-term improvements in the function of an arm that is chronically paralyzed as a result of a cerebral lesion,” the authors concluded.

Results Need Clarification

The results that Dr. Zheng and coauthors reported “are exciting, but need clarification and confirmation,” said Robert J. Spinner, MD, Chair of the Department of Neurologic Surgery; Alexander Y. Shin, MD, Consultant in the Department of Orthopedic Surgery; and Allen T. Bishop, MD, Consultant in the Department of Orthopedic Surgery; all at the Mayo Clinic in Rochester, Minnesota, in an accompanying editorial.

Among the questions Dr. Spinner and coauthors raised about the study are whether distal muscles can functionally reinnervate in a year, and whether C7 neurotomy on the paralyzed side led to improvements in spasticity and function. “The C7 neurotomy itself, associated with an immediate reduction in spasticity, represents a major advance for some patients with brain injury who have poor function and spasticity,” they noted. Improvement of the damaged motor cortex, which ongoing physical therapy may enhance, may also contribute to a reduction in spasticity.

Dr. Spinner and coauthors also cited a previous trial by some of Dr. Zheng’s colleagues in which 49% of patients with brachial plexus injury had motor recovery within seven years. “The presence of physiological connectivity observed in the trials does not necessarily equate with functional recovery,” the authors stated.

Future studies of surgical C7 nerve transfer in patients with one-sided arm paralysis should include patients who have C7 neurotomy without nerve transfer, said Dr. Spinner and colleagues. They also noted that because Dr. Zheng and colleagues perform a relatively high volume of these operations, their results might not be easy to reproduce elsewhere.

“Factors other than technical ones, including differences in BMI and limb length across different populations, may lead to different surgical outcomes,” said Dr. Spinner and coauthors. Future research should focus on ways to enhance or speed up nerve regeneration, improve plasticity, and maximize rehabilitation, they added.

—Richard Mark Kirkner

Suggested Reading

Spinner RJ, Shin AY, Bishop AT. Rewiring to regain function in patients with spastic hemiplegia. N Engl J Med. 2018;378(1):83-84.

Zheng MX, Hua XY, Feng JT, et al. Trial of contralateral seventh cervical nerve transfer for spastic arm paralysis. N Engl J Med. 2018;378(1):22-34.

Patients with spastic arm paralysis who receive a contralateral C7 nerve graft from their nonparalyzed side to their paralyzed side may have greater improvement in arm function and reduction in spasticity after a year, compared with patients who undergo rehabilitation alone, according to research published January 4 in the New England Journal of Medicine.

The researchers randomly assigned 36 patients who had had unilateral arm paralysis for at least five years to either surgical C7 nerve transfer plus rehabilitation or rehabilitation alone. Participants in the surgery group had an average increase of 17.7 points on the Fugl-Meyer score, while those in the rehabilitation-only group had an average increase of 2.6 points.

To evaluate spasticity, the researchers used the Modified Ashworth Scale, which is scored from 0 to 5. A higher score indicates greater spasticity. Patients who received surgery had improvement from baseline in all five areas measured, and none worsened. The smallest difference between the two groups was in thumb extension. On this measure, 15 surgery patients had a one- or two-unit improvement and three had no change, while seven controls had a one- or two-unit improvement, seven had no improvement, and four had a one-unit worsening. At one year, 16 (89%) patients in the surgery group were able to accomplish three or more of the functional tasks that researchers gave them, whereas none of the controls could do so.

“The majority of clinical improvements coincided with physiologic evidence of connectivity between the hemisphere on the side of the donor nerve and the paralyzed arm,” said lead author Mou-Xiong Zheng, MD, PhD, a hand surgeon at Huashan Hospital at Fudan University in Shanghai, and colleagues.

A Modification to a Previous Surgical Method

Damage to the contralateral cerebral hemisphere after stroke arises from interruption of the inhibitory activity of upper motor neurons. This interruption causes spasticity, along with hand weakness and loss of fractionated fine motor control. In previous studies, researchers have observed activity in the cerebral hemisphere on the same side of paralysis during stroke recovery, but Dr. Zheng and coauthors asserted that connections between the hand and that part of the brain are “sparse,” thus limiting the body’s ability to compensate for spasticity and functional loss.

The latest findings are consistent with those of earlier studies, including one by Dr. Zheng’s coauthors that suggested that the paralyzed hand could be connected to the unaffected hemisphere by transferring a cervical spine nerve from the nonparalyzed side. Researchers previously found this treatment effective for injuries of the brachial plexus. Of the five nerves of the brachial plexus, Dr. Zheng and coauthors chose the C7 nerve because it accounts for about 20% of the nerve fibers in the brachial bundle. Severing the nerve typically results in transient weakness and numbness in the arm or leg on the same side. When they evaluated the hand on the side of the donor graft, the researchers found no significant changes in power, tactile threshold, or two-point discrimination as a result of surgery.

The authors’ surgical approach was a modification of the C7 nerve transfer method that Dr. Zheng and coauthors had previously reported. The operation involved making an incision at the superior aspect of the sternum, mobilizing the donor C7 nerve on the nonparalyzed side, and routing it between the spinal column and esophagus. Then, an anastomosis was performed directly with the C7 nerve on the paralyzed side.

Rehabilitation therapy for the surgery group and controls was identical. Rehabilitation sessions took place four times weekly for 12 months at a single facility, although surgery patients wore an immobilizing cast after their operations.

The nature of the study population (ie, men of various ages with various causes of the underlying cerebral lesions) makes it difficult to draw general conclusions from the findings, Dr. Zheng and coauthors noted. “A larger cohort, followed for a longer period, would be necessary to determine whether cervical nerve transfer results in safe, consistent, and long-term improvements in the function of an arm that is chronically paralyzed as a result of a cerebral lesion,” the authors concluded.

Results Need Clarification

The results that Dr. Zheng and coauthors reported “are exciting, but need clarification and confirmation,” said Robert J. Spinner, MD, Chair of the Department of Neurologic Surgery; Alexander Y. Shin, MD, Consultant in the Department of Orthopedic Surgery; and Allen T. Bishop, MD, Consultant in the Department of Orthopedic Surgery; all at the Mayo Clinic in Rochester, Minnesota, in an accompanying editorial.

Among the questions Dr. Spinner and coauthors raised about the study are whether distal muscles can functionally reinnervate in a year, and whether C7 neurotomy on the paralyzed side led to improvements in spasticity and function. “The C7 neurotomy itself, associated with an immediate reduction in spasticity, represents a major advance for some patients with brain injury who have poor function and spasticity,” they noted. Improvement of the damaged motor cortex, which ongoing physical therapy may enhance, may also contribute to a reduction in spasticity.

Dr. Spinner and coauthors also cited a previous trial by some of Dr. Zheng’s colleagues in which 49% of patients with brachial plexus injury had motor recovery within seven years. “The presence of physiological connectivity observed in the trials does not necessarily equate with functional recovery,” the authors stated.

Future studies of surgical C7 nerve transfer in patients with one-sided arm paralysis should include patients who have C7 neurotomy without nerve transfer, said Dr. Spinner and colleagues. They also noted that because Dr. Zheng and colleagues perform a relatively high volume of these operations, their results might not be easy to reproduce elsewhere.

“Factors other than technical ones, including differences in BMI and limb length across different populations, may lead to different surgical outcomes,” said Dr. Spinner and coauthors. Future research should focus on ways to enhance or speed up nerve regeneration, improve plasticity, and maximize rehabilitation, they added.

—Richard Mark Kirkner

Suggested Reading

Spinner RJ, Shin AY, Bishop AT. Rewiring to regain function in patients with spastic hemiplegia. N Engl J Med. 2018;378(1):83-84.

Zheng MX, Hua XY, Feng JT, et al. Trial of contralateral seventh cervical nerve transfer for spastic arm paralysis. N Engl J Med. 2018;378(1):22-34.

Patients with spastic arm paralysis who receive a contralateral C7 nerve graft from their nonparalyzed side to their paralyzed side may have greater improvement in arm function and reduction in spasticity after a year, compared with patients who undergo rehabilitation alone, according to research published January 4 in the New England Journal of Medicine.

The researchers randomly assigned 36 patients who had had unilateral arm paralysis for at least five years to either surgical C7 nerve transfer plus rehabilitation or rehabilitation alone. Participants in the surgery group had an average increase of 17.7 points on the Fugl-Meyer score, while those in the rehabilitation-only group had an average increase of 2.6 points.

To evaluate spasticity, the researchers used the Modified Ashworth Scale, which is scored from 0 to 5. A higher score indicates greater spasticity. Patients who received surgery had improvement from baseline in all five areas measured, and none worsened. The smallest difference between the two groups was in thumb extension. On this measure, 15 surgery patients had a one- or two-unit improvement and three had no change, while seven controls had a one- or two-unit improvement, seven had no improvement, and four had a one-unit worsening. At one year, 16 (89%) patients in the surgery group were able to accomplish three or more of the functional tasks that researchers gave them, whereas none of the controls could do so.

“The majority of clinical improvements coincided with physiologic evidence of connectivity between the hemisphere on the side of the donor nerve and the paralyzed arm,” said lead author Mou-Xiong Zheng, MD, PhD, a hand surgeon at Huashan Hospital at Fudan University in Shanghai, and colleagues.

A Modification to a Previous Surgical Method

Damage to the contralateral cerebral hemisphere after stroke arises from interruption of the inhibitory activity of upper motor neurons. This interruption causes spasticity, along with hand weakness and loss of fractionated fine motor control. In previous studies, researchers have observed activity in the cerebral hemisphere on the same side of paralysis during stroke recovery, but Dr. Zheng and coauthors asserted that connections between the hand and that part of the brain are “sparse,” thus limiting the body’s ability to compensate for spasticity and functional loss.

The latest findings are consistent with those of earlier studies, including one by Dr. Zheng’s coauthors that suggested that the paralyzed hand could be connected to the unaffected hemisphere by transferring a cervical spine nerve from the nonparalyzed side. Researchers previously found this treatment effective for injuries of the brachial plexus. Of the five nerves of the brachial plexus, Dr. Zheng and coauthors chose the C7 nerve because it accounts for about 20% of the nerve fibers in the brachial bundle. Severing the nerve typically results in transient weakness and numbness in the arm or leg on the same side. When they evaluated the hand on the side of the donor graft, the researchers found no significant changes in power, tactile threshold, or two-point discrimination as a result of surgery.

The authors’ surgical approach was a modification of the C7 nerve transfer method that Dr. Zheng and coauthors had previously reported. The operation involved making an incision at the superior aspect of the sternum, mobilizing the donor C7 nerve on the nonparalyzed side, and routing it between the spinal column and esophagus. Then, an anastomosis was performed directly with the C7 nerve on the paralyzed side.

Rehabilitation therapy for the surgery group and controls was identical. Rehabilitation sessions took place four times weekly for 12 months at a single facility, although surgery patients wore an immobilizing cast after their operations.

The nature of the study population (ie, men of various ages with various causes of the underlying cerebral lesions) makes it difficult to draw general conclusions from the findings, Dr. Zheng and coauthors noted. “A larger cohort, followed for a longer period, would be necessary to determine whether cervical nerve transfer results in safe, consistent, and long-term improvements in the function of an arm that is chronically paralyzed as a result of a cerebral lesion,” the authors concluded.

Results Need Clarification

The results that Dr. Zheng and coauthors reported “are exciting, but need clarification and confirmation,” said Robert J. Spinner, MD, Chair of the Department of Neurologic Surgery; Alexander Y. Shin, MD, Consultant in the Department of Orthopedic Surgery; and Allen T. Bishop, MD, Consultant in the Department of Orthopedic Surgery; all at the Mayo Clinic in Rochester, Minnesota, in an accompanying editorial.

Among the questions Dr. Spinner and coauthors raised about the study are whether distal muscles can functionally reinnervate in a year, and whether C7 neurotomy on the paralyzed side led to improvements in spasticity and function. “The C7 neurotomy itself, associated with an immediate reduction in spasticity, represents a major advance for some patients with brain injury who have poor function and spasticity,” they noted. Improvement of the damaged motor cortex, which ongoing physical therapy may enhance, may also contribute to a reduction in spasticity.

Dr. Spinner and coauthors also cited a previous trial by some of Dr. Zheng’s colleagues in which 49% of patients with brachial plexus injury had motor recovery within seven years. “The presence of physiological connectivity observed in the trials does not necessarily equate with functional recovery,” the authors stated.

Future studies of surgical C7 nerve transfer in patients with one-sided arm paralysis should include patients who have C7 neurotomy without nerve transfer, said Dr. Spinner and colleagues. They also noted that because Dr. Zheng and colleagues perform a relatively high volume of these operations, their results might not be easy to reproduce elsewhere.

“Factors other than technical ones, including differences in BMI and limb length across different populations, may lead to different surgical outcomes,” said Dr. Spinner and coauthors. Future research should focus on ways to enhance or speed up nerve regeneration, improve plasticity, and maximize rehabilitation, they added.

—Richard Mark Kirkner

Suggested Reading

Spinner RJ, Shin AY, Bishop AT. Rewiring to regain function in patients with spastic hemiplegia. N Engl J Med. 2018;378(1):83-84.

Zheng MX, Hua XY, Feng JT, et al. Trial of contralateral seventh cervical nerve transfer for spastic arm paralysis. N Engl J Med. 2018;378(1):22-34.

SAN DIEGO—Cross-species genetic screens are helping researchers find molecules that modulate the proteins that cause adult neurodegenerative disease, according to a lecture delivered at the 142nd Annual Meeting of the American Neurological Association. Such screening thus reveals potential therapeutic targets and augments scientific understanding of the biology of these proteins.

The research raises the possibility that clinicians will be able to delay or prevent neurodegenerative disease in the future through the early administration of molecules that target these proteins. “We need to identify those at risk and begin the therapy … before the symptoms develop, just like you would treat somebody with statins if they have high cholesterol before they have a heart attack,” said Huda Y. Zoghbi, MD, an investigator with the Howard Hughes Medical Institute; Professor of Pediatrics, Molecular and Human Genetics, Neuroscience, and Neurology at Baylor College of Medicine; and Director of the Jan and Dan Duncan Neurological Research Institute in Houston.

Research Into a Rare Disorder

Studying the rare disorder spinocerebellar ataxia type 1 (SCA1) has yielded information that could be applicable to more common neurodegenerative diseases, said Dr. Zoghbi. SCA1 is characterized by a loss of Purkinje cells and brainstem neurons that impairs balance and coordination and increases the risk of premature death. In 1993, Dr. Zoghbi; Harry Orr, PhD, Professor and Tulloch Chair in Genetics at the University of Minnesota in Minneapolis; and colleagues discovered that a CAG repeat expansion in ATXN1 causes SCA1 by producing an abnormally long version of the ataxin-1 protein. They also found that neurodegeneration results if levels of normal ataxin-1 are increased by 20% or 30%. The brain thus is highly sensitive to ataxin-1 levels, said Dr. Zoghbi.

Borrowing a technique from cancer research, the investigators performed genetic screening using fruit fly and human cells to find targets that would reduce ataxin-1 levels when inhibited. They found approximately 30 relevant genes in each organism, and about 12 were common to both organisms. All of the shared genes operate in the mitogen-activated protein (MAP) kinase pathway, and inhibiting each gene lowered ataxin-1 in cells and flies.

Inhibiting Enzymes

The researchers also observed that the enzymes MSK1 and MSK2 intervene in the pathway and promote ataxin-1 accumulation. Inhibiting MSK1 produced clinical improvement in SCA1 mouse models, and inhibiting MSK1 and MSK2 together produced still more improvement. A small molecule that inhibited MSK1 therefore could help patients with SCA1, said Dr. Zoghbi.

Inhibiting enzymes such as MSK1 and MSK2 for years at a time could raise safety concerns, however. The investigators thus decided to look for other modulators of ataxin-1, on the theory that targeting modulators that function in different pathways could reduce the amount of inhibition required and decrease the risk of adverse events.

Further screening revealed that PKA1 appeared to modulate ataxin-1 by a mechanism similar to that of MSK1. An animal study indicated that inhibiting MSK1 and inhibiting PKA1 produced equivalent reductions on ataxin-1, but that inhibiting both in tandem yielded a greater reduction. The investigators then found that the PAK1 enzyme promoted ataxin-1 accumulation through a pathway different from that of MSK1 and PKA1. Inhibiting PAK1 reduced ataxin-1 levels, and inhibiting PAK1 and MSK1 simultaneously had a still greater effect.

Targeting Tauopathies

Their research into kinases and enzymes prompted Dr. Zoghbi and colleagues to consider whole genome screening as a method of targeting proteins that cause neurodegenerative diseases other than SCA1. Overexpression of tau, for example, causes neurodegeneration, regardless of whether the overexpression results from a mutation in tau-encoding genes. “Tau is a true culprit in dementias, and we thought that if we could find something to lower it, we could help patients with these disorders,” said Dr. Zoghbi.

Another genetic screen suggested that the enzyme Nuak1 stabilizes tau by phosphorylating it at Ser356. The investigators observed that inhibiting Nuak1 reduced tau levels and suppressed neurodegeneration in human cells and in fruit flies. Tau accumulation decreases fruit flies’ climbing ability, and inhibiting Nuak1 improved this ability in flies with tau accumulation.

In a subsequent mouse study, Dr. Zoghbi and colleagues found that inhibiting Nuak1 significantly reduced levels of phosphorylated tau and provided smaller reductions in total tau and endogenous tau. They also observed that mice with tauopathy took longer than wild-type mice to complete a water maze task. Inhibiting Nuak1 in mice with tauopathy improved their performance on this task. Nuak1 inhibition also restored synaptic plasticity in these mice to a level similar to that of wild-type mice. Finally, Nuak1 inhibition reduced tau tangle pathology and increased survival. Dr. Zoghbi and colleagues are now searching for small-molecule Nuak1 inhibitors that could provide protection against tauopathy.

In Search of More Targets

The investigators next looked for genes that influence tau. Successive levels of genetic screening identified 59 genes that “robustly lower tau levels,” said Dr. Zoghbi. She and her colleagues prioritized 12 of the genes for investigation.

They used adenoassociated viral vectors to deliver therapies that can knock out mouse genes for as long as a year. With this technique, the investigators confirmed that all of the initial 12 genes decreased tau levels. In principle, this strategy could enable researchers to scan the whole genome for genes that modulate tau, said Dr. Zoghbi.

—Erik Greb

Suggested Reading

Lasagna-Reeves CA, de Haro M, Hao S, et al. Reduction of Nuak1 decreases tau and reverses phenotypes in a tauopathy mouse model. Neuron. 2016; 92(2):407-418.

Park J, Al-Ramahi I, Tan Q, et al. RAS-MAPK-MSK1 pathway modulates ataxin 1 protein levels and toxicity in SCA1. Nature. 2013;498(7454):325-331.

Rousseaux MW, de Haro M, Lasagna-Reeves CA, et al. TRIM28 regulates the nuclear accumulation and toxicity of both alpha-synuclein and tau. Elife. 2016 Oct 25;5. pii: e19809

SAN DIEGO—Cross-species genetic screens are helping researchers find molecules that modulate the proteins that cause adult neurodegenerative disease, according to a lecture delivered at the 142nd Annual Meeting of the American Neurological Association. Such screening thus reveals potential therapeutic targets and augments scientific understanding of the biology of these proteins.

The research raises the possibility that clinicians will be able to delay or prevent neurodegenerative disease in the future through the early administration of molecules that target these proteins. “We need to identify those at risk and begin the therapy … before the symptoms develop, just like you would treat somebody with statins if they have high cholesterol before they have a heart attack,” said Huda Y. Zoghbi, MD, an investigator with the Howard Hughes Medical Institute; Professor of Pediatrics, Molecular and Human Genetics, Neuroscience, and Neurology at Baylor College of Medicine; and Director of the Jan and Dan Duncan Neurological Research Institute in Houston.

Research Into a Rare Disorder

Studying the rare disorder spinocerebellar ataxia type 1 (SCA1) has yielded information that could be applicable to more common neurodegenerative diseases, said Dr. Zoghbi. SCA1 is characterized by a loss of Purkinje cells and brainstem neurons that impairs balance and coordination and increases the risk of premature death. In 1993, Dr. Zoghbi; Harry Orr, PhD, Professor and Tulloch Chair in Genetics at the University of Minnesota in Minneapolis; and colleagues discovered that a CAG repeat expansion in ATXN1 causes SCA1 by producing an abnormally long version of the ataxin-1 protein. They also found that neurodegeneration results if levels of normal ataxin-1 are increased by 20% or 30%. The brain thus is highly sensitive to ataxin-1 levels, said Dr. Zoghbi.

Borrowing a technique from cancer research, the investigators performed genetic screening using fruit fly and human cells to find targets that would reduce ataxin-1 levels when inhibited. They found approximately 30 relevant genes in each organism, and about 12 were common to both organisms. All of the shared genes operate in the mitogen-activated protein (MAP) kinase pathway, and inhibiting each gene lowered ataxin-1 in cells and flies.

Inhibiting Enzymes

The researchers also observed that the enzymes MSK1 and MSK2 intervene in the pathway and promote ataxin-1 accumulation. Inhibiting MSK1 produced clinical improvement in SCA1 mouse models, and inhibiting MSK1 and MSK2 together produced still more improvement. A small molecule that inhibited MSK1 therefore could help patients with SCA1, said Dr. Zoghbi.

Inhibiting enzymes such as MSK1 and MSK2 for years at a time could raise safety concerns, however. The investigators thus decided to look for other modulators of ataxin-1, on the theory that targeting modulators that function in different pathways could reduce the amount of inhibition required and decrease the risk of adverse events.

Further screening revealed that PKA1 appeared to modulate ataxin-1 by a mechanism similar to that of MSK1. An animal study indicated that inhibiting MSK1 and inhibiting PKA1 produced equivalent reductions on ataxin-1, but that inhibiting both in tandem yielded a greater reduction. The investigators then found that the PAK1 enzyme promoted ataxin-1 accumulation through a pathway different from that of MSK1 and PKA1. Inhibiting PAK1 reduced ataxin-1 levels, and inhibiting PAK1 and MSK1 simultaneously had a still greater effect.

Targeting Tauopathies

Their research into kinases and enzymes prompted Dr. Zoghbi and colleagues to consider whole genome screening as a method of targeting proteins that cause neurodegenerative diseases other than SCA1. Overexpression of tau, for example, causes neurodegeneration, regardless of whether the overexpression results from a mutation in tau-encoding genes. “Tau is a true culprit in dementias, and we thought that if we could find something to lower it, we could help patients with these disorders,” said Dr. Zoghbi.

Another genetic screen suggested that the enzyme Nuak1 stabilizes tau by phosphorylating it at Ser356. The investigators observed that inhibiting Nuak1 reduced tau levels and suppressed neurodegeneration in human cells and in fruit flies. Tau accumulation decreases fruit flies’ climbing ability, and inhibiting Nuak1 improved this ability in flies with tau accumulation.

In a subsequent mouse study, Dr. Zoghbi and colleagues found that inhibiting Nuak1 significantly reduced levels of phosphorylated tau and provided smaller reductions in total tau and endogenous tau. They also observed that mice with tauopathy took longer than wild-type mice to complete a water maze task. Inhibiting Nuak1 in mice with tauopathy improved their performance on this task. Nuak1 inhibition also restored synaptic plasticity in these mice to a level similar to that of wild-type mice. Finally, Nuak1 inhibition reduced tau tangle pathology and increased survival. Dr. Zoghbi and colleagues are now searching for small-molecule Nuak1 inhibitors that could provide protection against tauopathy.

In Search of More Targets

The investigators next looked for genes that influence tau. Successive levels of genetic screening identified 59 genes that “robustly lower tau levels,” said Dr. Zoghbi. She and her colleagues prioritized 12 of the genes for investigation.

They used adenoassociated viral vectors to deliver therapies that can knock out mouse genes for as long as a year. With this technique, the investigators confirmed that all of the initial 12 genes decreased tau levels. In principle, this strategy could enable researchers to scan the whole genome for genes that modulate tau, said Dr. Zoghbi.

—Erik Greb

Suggested Reading

Lasagna-Reeves CA, de Haro M, Hao S, et al. Reduction of Nuak1 decreases tau and reverses phenotypes in a tauopathy mouse model. Neuron. 2016; 92(2):407-418.

Park J, Al-Ramahi I, Tan Q, et al. RAS-MAPK-MSK1 pathway modulates ataxin 1 protein levels and toxicity in SCA1. Nature. 2013;498(7454):325-331.

Rousseaux MW, de Haro M, Lasagna-Reeves CA, et al. TRIM28 regulates the nuclear accumulation and toxicity of both alpha-synuclein and tau. Elife. 2016 Oct 25;5. pii: e19809

SAN DIEGO—Cross-species genetic screens are helping researchers find molecules that modulate the proteins that cause adult neurodegenerative disease, according to a lecture delivered at the 142nd Annual Meeting of the American Neurological Association. Such screening thus reveals potential therapeutic targets and augments scientific understanding of the biology of these proteins.

The research raises the possibility that clinicians will be able to delay or prevent neurodegenerative disease in the future through the early administration of molecules that target these proteins. “We need to identify those at risk and begin the therapy … before the symptoms develop, just like you would treat somebody with statins if they have high cholesterol before they have a heart attack,” said Huda Y. Zoghbi, MD, an investigator with the Howard Hughes Medical Institute; Professor of Pediatrics, Molecular and Human Genetics, Neuroscience, and Neurology at Baylor College of Medicine; and Director of the Jan and Dan Duncan Neurological Research Institute in Houston.

Research Into a Rare Disorder

Studying the rare disorder spinocerebellar ataxia type 1 (SCA1) has yielded information that could be applicable to more common neurodegenerative diseases, said Dr. Zoghbi. SCA1 is characterized by a loss of Purkinje cells and brainstem neurons that impairs balance and coordination and increases the risk of premature death. In 1993, Dr. Zoghbi; Harry Orr, PhD, Professor and Tulloch Chair in Genetics at the University of Minnesota in Minneapolis; and colleagues discovered that a CAG repeat expansion in ATXN1 causes SCA1 by producing an abnormally long version of the ataxin-1 protein. They also found that neurodegeneration results if levels of normal ataxin-1 are increased by 20% or 30%. The brain thus is highly sensitive to ataxin-1 levels, said Dr. Zoghbi.

Borrowing a technique from cancer research, the investigators performed genetic screening using fruit fly and human cells to find targets that would reduce ataxin-1 levels when inhibited. They found approximately 30 relevant genes in each organism, and about 12 were common to both organisms. All of the shared genes operate in the mitogen-activated protein (MAP) kinase pathway, and inhibiting each gene lowered ataxin-1 in cells and flies.

Inhibiting Enzymes

The researchers also observed that the enzymes MSK1 and MSK2 intervene in the pathway and promote ataxin-1 accumulation. Inhibiting MSK1 produced clinical improvement in SCA1 mouse models, and inhibiting MSK1 and MSK2 together produced still more improvement. A small molecule that inhibited MSK1 therefore could help patients with SCA1, said Dr. Zoghbi.

Inhibiting enzymes such as MSK1 and MSK2 for years at a time could raise safety concerns, however. The investigators thus decided to look for other modulators of ataxin-1, on the theory that targeting modulators that function in different pathways could reduce the amount of inhibition required and decrease the risk of adverse events.

Further screening revealed that PKA1 appeared to modulate ataxin-1 by a mechanism similar to that of MSK1. An animal study indicated that inhibiting MSK1 and inhibiting PKA1 produced equivalent reductions on ataxin-1, but that inhibiting both in tandem yielded a greater reduction. The investigators then found that the PAK1 enzyme promoted ataxin-1 accumulation through a pathway different from that of MSK1 and PKA1. Inhibiting PAK1 reduced ataxin-1 levels, and inhibiting PAK1 and MSK1 simultaneously had a still greater effect.

Targeting Tauopathies

Their research into kinases and enzymes prompted Dr. Zoghbi and colleagues to consider whole genome screening as a method of targeting proteins that cause neurodegenerative diseases other than SCA1. Overexpression of tau, for example, causes neurodegeneration, regardless of whether the overexpression results from a mutation in tau-encoding genes. “Tau is a true culprit in dementias, and we thought that if we could find something to lower it, we could help patients with these disorders,” said Dr. Zoghbi.

Another genetic screen suggested that the enzyme Nuak1 stabilizes tau by phosphorylating it at Ser356. The investigators observed that inhibiting Nuak1 reduced tau levels and suppressed neurodegeneration in human cells and in fruit flies. Tau accumulation decreases fruit flies’ climbing ability, and inhibiting Nuak1 improved this ability in flies with tau accumulation.

In a subsequent mouse study, Dr. Zoghbi and colleagues found that inhibiting Nuak1 significantly reduced levels of phosphorylated tau and provided smaller reductions in total tau and endogenous tau. They also observed that mice with tauopathy took longer than wild-type mice to complete a water maze task. Inhibiting Nuak1 in mice with tauopathy improved their performance on this task. Nuak1 inhibition also restored synaptic plasticity in these mice to a level similar to that of wild-type mice. Finally, Nuak1 inhibition reduced tau tangle pathology and increased survival. Dr. Zoghbi and colleagues are now searching for small-molecule Nuak1 inhibitors that could provide protection against tauopathy.

In Search of More Targets

The investigators next looked for genes that influence tau. Successive levels of genetic screening identified 59 genes that “robustly lower tau levels,” said Dr. Zoghbi. She and her colleagues prioritized 12 of the genes for investigation.

They used adenoassociated viral vectors to deliver therapies that can knock out mouse genes for as long as a year. With this technique, the investigators confirmed that all of the initial 12 genes decreased tau levels. In principle, this strategy could enable researchers to scan the whole genome for genes that modulate tau, said Dr. Zoghbi.

—Erik Greb

Suggested Reading

Lasagna-Reeves CA, de Haro M, Hao S, et al. Reduction of Nuak1 decreases tau and reverses phenotypes in a tauopathy mouse model. Neuron. 2016; 92(2):407-418.

Park J, Al-Ramahi I, Tan Q, et al. RAS-MAPK-MSK1 pathway modulates ataxin 1 protein levels and toxicity in SCA1. Nature. 2013;498(7454):325-331.

Rousseaux MW, de Haro M, Lasagna-Reeves CA, et al. TRIM28 regulates the nuclear accumulation and toxicity of both alpha-synuclein and tau. Elife. 2016 Oct 25;5. pii: e19809

An unlicensed autologous stem cell product derived from adipose tissue is under Food and Drug Administration scrutiny for manufacturing processes that may compromise its safety and for failing to toe the regulatory line in marketing.

American CryoStem received an FDA warning letter Jan. 3 demanding that the company comply with best-manufacturing processes and obtain an investigational new drug application if it wishes to continue marketing ATCELL for its currently advertised clinical indications and administration routes. These include intravenous, intrathecal, or aerosol inhalation of the product for anoxic brain injury, Parkinson’s disease, amyotrophic lateral sclerosis, stroke, and multiple sclerosis.

Wikimedia Commons/FitzColinGerald/Creative Commons License

msullivan@frontlinemedcom.com

SOURCE: FDA warning letter

An unlicensed autologous stem cell product derived from adipose tissue is under Food and Drug Administration scrutiny for manufacturing processes that may compromise its safety and for failing to toe the regulatory line in marketing.

American CryoStem received an FDA warning letter Jan. 3 demanding that the company comply with best-manufacturing processes and obtain an investigational new drug application if it wishes to continue marketing ATCELL for its currently advertised clinical indications and administration routes. These include intravenous, intrathecal, or aerosol inhalation of the product for anoxic brain injury, Parkinson’s disease, amyotrophic lateral sclerosis, stroke, and multiple sclerosis.

Wikimedia Commons/FitzColinGerald/Creative Commons License

msullivan@frontlinemedcom.com

SOURCE: FDA warning letter

An unlicensed autologous stem cell product derived from adipose tissue is under Food and Drug Administration scrutiny for manufacturing processes that may compromise its safety and for failing to toe the regulatory line in marketing.

American CryoStem received an FDA warning letter Jan. 3 demanding that the company comply with best-manufacturing processes and obtain an investigational new drug application if it wishes to continue marketing ATCELL for its currently advertised clinical indications and administration routes. These include intravenous, intrathecal, or aerosol inhalation of the product for anoxic brain injury, Parkinson’s disease, amyotrophic lateral sclerosis, stroke, and multiple sclerosis.

Wikimedia Commons/FitzColinGerald/Creative Commons License

msullivan@frontlinemedcom.com

SOURCE: FDA warning letter

Does Cholesterol Testing Reduce Risk of Recurrent Stroke?

When a patient has a heart attack or stroke, it is critical for his or her clinician to perform a follow-up cholesterol test, according to a study conducted at the Intermountain Medical Center Heart Institute in Salt Lake City. This additional measure is significantly associated with reduced risk of having another serious cardiovascular episode.

Investigators found that patients who do not follow up with their doctor by getting a low-density lipoprotein (LDL) cholesterol test after a heart attack or stroke are significantly more likely to have a recurrence. They also found a significant and clinically meaningful difference in major adverse outcomes—including death, heart attack, stroke, and a vascular bypass or an angioplasty—based on whether or not a patient has a follow-up measurement of his or her LDL cholesterol.

“It is clear that anyone with a previous heart problem caused by clogged arteries should be taking a cholesterol-lowering medication,” said Kirk U. Knowlton, MD, Director of Cardiovascular Research at the Intermountain Medical Center Heart Institute.

The study of more than 60,000 patients with known heart disease, cerebrovascular disease, or peripheral artery disease, including patients with stroke and heart attack, showed that the major adverse clinical event rate was lower in patients who took cholesterol-lowering statins and in those who did not take them if their LDL was measured.

“The large difference is surprising. The risk of dying after three years with no LDL follow-up is 21% versus 5.9% for patients who have an LDL follow-up,” said Dr. Knowlton.

Researchers reviewed Intermountain Healthcare’s enterprise data warehouse to identify all adults who came to one of Intermountain’s 22 hospitals for the first time with a heart attack or stroke. These data included patients with coronary artery disease, cerebrovascular disease, and peripheral arterial disease admitted between January 1, 1999, and December 31, 2013.

Investigators observed patients who survived and were followed for three years or more or until their death. Patient demographics, history, prescribed medications, and whether LDL was measured was analyzed.

The study compared 62,070 patients in the database who met the study criteria. The mean age was 66, and 65% of patients were male. Of those who met the criteria, 69.3% had coronary artery disease, 18.6% had cerebrovascular disease, and 12.1% had peripheral arterial disease when they came to the hospital with their first heart attack or stroke.

Researchers found that the risk of a patient having a secondary event or dying decreased in patients who had a follow-up LDL test before a subsequent adverse outcome or before the end of their follow-up.

Coffee Is Associated With Lower Risk of Heart Failure and Stroke

Drinking coffee may be associated with a decreased risk of heart failure or stroke, according to researchers.

Investigators used machine learning to analyze data from the long-running Framingham Heart Study, which includes information about what people eat and their cardiovascular health. They found that every additional cup of coffee consumed per week was associated with a 7% decreased risk of heart failure and an 8% reduced risk of stroke, compared with non-coffee drinkers.

The researchers further investigated the machine learning results using traditional analysis in two studies with similar sets of data: the Cardiovascular Heart Study and the Atherosclerosis Risk In Communities Study. The association between drinking coffee and a decreased risk of heart failure and stroke was observed consistently in all three studies.

Another potential risk factor identified by machine-learning analysis was red meat consumption. The association between red meat consumption and heart failure or stroke was less clear, however. Eating red meat was associated with decreased risk of heart failure and stroke in the Framingham Heart Study, but validating the finding in comparable studies is more challenging due to differences in the definitions of red meat between studies, said the researchers. Further investigation to better determine how red meat consumption affects risk for heart failure and stroke is ongoing.

The researchers also built a predictive model using known risk factors from the Framingham Risk Score such as blood pressure, age, and other patient characteristics associated with cardiovascular disease. “By including coffee in the model, the prediction accuracy increased by 4%. Machine learning may be a useful addition to the way we look at data and may help us to find new ways to lower the risk of heart failure and strokes,” said David Kao, MD, Assistant Professor of Medicine in the Division of Cardiology at the University of Colorado School of Medicine in Aurora.

Statins May Improve Stroke Outcome

Patients with a prior history of heart attack or stroke have better outcomes when cholesterol-lowering medications are used after they are discharged from the hospital, according to researchers.

Prior surveys in hospitals found that statins are not being used consistently in patients who have been admitted to the hospital following a heart attack or stroke. Researchers also found that when the medication is prescribed, dosing is likely not as high as it should be to provide optimal benefits.

Researchers examined more than 62,000 records of patients from the Intermountain Healthcare system between 1999 and 2013 who survived an initial atherosclerotic cardiovascular disease event, such as a heart attack or stroke. They were then followed for three years or until death to identify the effectiveness of statin use prescribed at the time of their discharge.

“Patients who were prescribed a statin medication following an initial heart attack or stroke reduced their risk of a future adverse event such as a future heart attack, stroke, revascularization, or death by almost 25%—the rate dropped from 34% to 26%,” said Jeffrey L. Anderson, MD, a cardiovascular researcher at the Intermountain Medical Center Heart Institute. “The patients who were discharged on what is considered a high-intensity dose of a statin saw a 21% reduction in their risk,” compared with those discharged on a low-intensity statin dose.”

Investigators found that 30% of patients in the study who were discharged from the hospital following a heart attack or stroke were not prescribed a statin. This factor led to worse outcomes for those patients.

Researchers also found that only 13% of patients were given a high-intensity dose of statins, but noted that patients on those higher doses experienced fewer heart attacks or strokes. For patients younger than age 76, a high-intensity statin is indicated, according to American Heart Association guidelines. Only 17.7% of these patients were discharged on a high-intensity dose, however.

Does Cholesterol Testing Reduce Risk of Recurrent Stroke?

When a patient has a heart attack or stroke, it is critical for his or her clinician to perform a follow-up cholesterol test, according to a study conducted at the Intermountain Medical Center Heart Institute in Salt Lake City. This additional measure is significantly associated with reduced risk of having another serious cardiovascular episode.

Investigators found that patients who do not follow up with their doctor by getting a low-density lipoprotein (LDL) cholesterol test after a heart attack or stroke are significantly more likely to have a recurrence. They also found a significant and clinically meaningful difference in major adverse outcomes—including death, heart attack, stroke, and a vascular bypass or an angioplasty—based on whether or not a patient has a follow-up measurement of his or her LDL cholesterol.

“It is clear that anyone with a previous heart problem caused by clogged arteries should be taking a cholesterol-lowering medication,” said Kirk U. Knowlton, MD, Director of Cardiovascular Research at the Intermountain Medical Center Heart Institute.

The study of more than 60,000 patients with known heart disease, cerebrovascular disease, or peripheral artery disease, including patients with stroke and heart attack, showed that the major adverse clinical event rate was lower in patients who took cholesterol-lowering statins and in those who did not take them if their LDL was measured.

“The large difference is surprising. The risk of dying after three years with no LDL follow-up is 21% versus 5.9% for patients who have an LDL follow-up,” said Dr. Knowlton.

Researchers reviewed Intermountain Healthcare’s enterprise data warehouse to identify all adults who came to one of Intermountain’s 22 hospitals for the first time with a heart attack or stroke. These data included patients with coronary artery disease, cerebrovascular disease, and peripheral arterial disease admitted between January 1, 1999, and December 31, 2013.

Investigators observed patients who survived and were followed for three years or more or until their death. Patient demographics, history, prescribed medications, and whether LDL was measured was analyzed.

The study compared 62,070 patients in the database who met the study criteria. The mean age was 66, and 65% of patients were male. Of those who met the criteria, 69.3% had coronary artery disease, 18.6% had cerebrovascular disease, and 12.1% had peripheral arterial disease when they came to the hospital with their first heart attack or stroke.

Researchers found that the risk of a patient having a secondary event or dying decreased in patients who had a follow-up LDL test before a subsequent adverse outcome or before the end of their follow-up.

Coffee Is Associated With Lower Risk of Heart Failure and Stroke

Drinking coffee may be associated with a decreased risk of heart failure or stroke, according to researchers.

Investigators used machine learning to analyze data from the long-running Framingham Heart Study, which includes information about what people eat and their cardiovascular health. They found that every additional cup of coffee consumed per week was associated with a 7% decreased risk of heart failure and an 8% reduced risk of stroke, compared with non-coffee drinkers.

The researchers further investigated the machine learning results using traditional analysis in two studies with similar sets of data: the Cardiovascular Heart Study and the Atherosclerosis Risk In Communities Study. The association between drinking coffee and a decreased risk of heart failure and stroke was observed consistently in all three studies.

Another potential risk factor identified by machine-learning analysis was red meat consumption. The association between red meat consumption and heart failure or stroke was less clear, however. Eating red meat was associated with decreased risk of heart failure and stroke in the Framingham Heart Study, but validating the finding in comparable studies is more challenging due to differences in the definitions of red meat between studies, said the researchers. Further investigation to better determine how red meat consumption affects risk for heart failure and stroke is ongoing.

The researchers also built a predictive model using known risk factors from the Framingham Risk Score such as blood pressure, age, and other patient characteristics associated with cardiovascular disease. “By including coffee in the model, the prediction accuracy increased by 4%. Machine learning may be a useful addition to the way we look at data and may help us to find new ways to lower the risk of heart failure and strokes,” said David Kao, MD, Assistant Professor of Medicine in the Division of Cardiology at the University of Colorado School of Medicine in Aurora.

Statins May Improve Stroke Outcome

Patients with a prior history of heart attack or stroke have better outcomes when cholesterol-lowering medications are used after they are discharged from the hospital, according to researchers.

Prior surveys in hospitals found that statins are not being used consistently in patients who have been admitted to the hospital following a heart attack or stroke. Researchers also found that when the medication is prescribed, dosing is likely not as high as it should be to provide optimal benefits.

Researchers examined more than 62,000 records of patients from the Intermountain Healthcare system between 1999 and 2013 who survived an initial atherosclerotic cardiovascular disease event, such as a heart attack or stroke. They were then followed for three years or until death to identify the effectiveness of statin use prescribed at the time of their discharge.

“Patients who were prescribed a statin medication following an initial heart attack or stroke reduced their risk of a future adverse event such as a future heart attack, stroke, revascularization, or death by almost 25%—the rate dropped from 34% to 26%,” said Jeffrey L. Anderson, MD, a cardiovascular researcher at the Intermountain Medical Center Heart Institute. “The patients who were discharged on what is considered a high-intensity dose of a statin saw a 21% reduction in their risk,” compared with those discharged on a low-intensity statin dose.”

Investigators found that 30% of patients in the study who were discharged from the hospital following a heart attack or stroke were not prescribed a statin. This factor led to worse outcomes for those patients.

Researchers also found that only 13% of patients were given a high-intensity dose of statins, but noted that patients on those higher doses experienced fewer heart attacks or strokes. For patients younger than age 76, a high-intensity statin is indicated, according to American Heart Association guidelines. Only 17.7% of these patients were discharged on a high-intensity dose, however.

Does Cholesterol Testing Reduce Risk of Recurrent Stroke?

When a patient has a heart attack or stroke, it is critical for his or her clinician to perform a follow-up cholesterol test, according to a study conducted at the Intermountain Medical Center Heart Institute in Salt Lake City. This additional measure is significantly associated with reduced risk of having another serious cardiovascular episode.

Investigators found that patients who do not follow up with their doctor by getting a low-density lipoprotein (LDL) cholesterol test after a heart attack or stroke are significantly more likely to have a recurrence. They also found a significant and clinically meaningful difference in major adverse outcomes—including death, heart attack, stroke, and a vascular bypass or an angioplasty—based on whether or not a patient has a follow-up measurement of his or her LDL cholesterol.

“It is clear that anyone with a previous heart problem caused by clogged arteries should be taking a cholesterol-lowering medication,” said Kirk U. Knowlton, MD, Director of Cardiovascular Research at the Intermountain Medical Center Heart Institute.

The study of more than 60,000 patients with known heart disease, cerebrovascular disease, or peripheral artery disease, including patients with stroke and heart attack, showed that the major adverse clinical event rate was lower in patients who took cholesterol-lowering statins and in those who did not take them if their LDL was measured.

“The large difference is surprising. The risk of dying after three years with no LDL follow-up is 21% versus 5.9% for patients who have an LDL follow-up,” said Dr. Knowlton.

Researchers reviewed Intermountain Healthcare’s enterprise data warehouse to identify all adults who came to one of Intermountain’s 22 hospitals for the first time with a heart attack or stroke. These data included patients with coronary artery disease, cerebrovascular disease, and peripheral arterial disease admitted between January 1, 1999, and December 31, 2013.

Investigators observed patients who survived and were followed for three years or more or until their death. Patient demographics, history, prescribed medications, and whether LDL was measured was analyzed.

The study compared 62,070 patients in the database who met the study criteria. The mean age was 66, and 65% of patients were male. Of those who met the criteria, 69.3% had coronary artery disease, 18.6% had cerebrovascular disease, and 12.1% had peripheral arterial disease when they came to the hospital with their first heart attack or stroke.

Researchers found that the risk of a patient having a secondary event or dying decreased in patients who had a follow-up LDL test before a subsequent adverse outcome or before the end of their follow-up.

Coffee Is Associated With Lower Risk of Heart Failure and Stroke

Drinking coffee may be associated with a decreased risk of heart failure or stroke, according to researchers.

Investigators used machine learning to analyze data from the long-running Framingham Heart Study, which includes information about what people eat and their cardiovascular health. They found that every additional cup of coffee consumed per week was associated with a 7% decreased risk of heart failure and an 8% reduced risk of stroke, compared with non-coffee drinkers.

The researchers further investigated the machine learning results using traditional analysis in two studies with similar sets of data: the Cardiovascular Heart Study and the Atherosclerosis Risk In Communities Study. The association between drinking coffee and a decreased risk of heart failure and stroke was observed consistently in all three studies.

Another potential risk factor identified by machine-learning analysis was red meat consumption. The association between red meat consumption and heart failure or stroke was less clear, however. Eating red meat was associated with decreased risk of heart failure and stroke in the Framingham Heart Study, but validating the finding in comparable studies is more challenging due to differences in the definitions of red meat between studies, said the researchers. Further investigation to better determine how red meat consumption affects risk for heart failure and stroke is ongoing.

The researchers also built a predictive model using known risk factors from the Framingham Risk Score such as blood pressure, age, and other patient characteristics associated with cardiovascular disease. “By including coffee in the model, the prediction accuracy increased by 4%. Machine learning may be a useful addition to the way we look at data and may help us to find new ways to lower the risk of heart failure and strokes,” said David Kao, MD, Assistant Professor of Medicine in the Division of Cardiology at the University of Colorado School of Medicine in Aurora.

Statins May Improve Stroke Outcome

Patients with a prior history of heart attack or stroke have better outcomes when cholesterol-lowering medications are used after they are discharged from the hospital, according to researchers.

Prior surveys in hospitals found that statins are not being used consistently in patients who have been admitted to the hospital following a heart attack or stroke. Researchers also found that when the medication is prescribed, dosing is likely not as high as it should be to provide optimal benefits.

Researchers examined more than 62,000 records of patients from the Intermountain Healthcare system between 1999 and 2013 who survived an initial atherosclerotic cardiovascular disease event, such as a heart attack or stroke. They were then followed for three years or until death to identify the effectiveness of statin use prescribed at the time of their discharge.

“Patients who were prescribed a statin medication following an initial heart attack or stroke reduced their risk of a future adverse event such as a future heart attack, stroke, revascularization, or death by almost 25%—the rate dropped from 34% to 26%,” said Jeffrey L. Anderson, MD, a cardiovascular researcher at the Intermountain Medical Center Heart Institute. “The patients who were discharged on what is considered a high-intensity dose of a statin saw a 21% reduction in their risk,” compared with those discharged on a low-intensity statin dose.”

Investigators found that 30% of patients in the study who were discharged from the hospital following a heart attack or stroke were not prescribed a statin. This factor led to worse outcomes for those patients.

Researchers also found that only 13% of patients were given a high-intensity dose of statins, but noted that patients on those higher doses experienced fewer heart attacks or strokes. For patients younger than age 76, a high-intensity statin is indicated, according to American Heart Association guidelines. Only 17.7% of these patients were discharged on a high-intensity dose, however.

ANAHEIM, CALIF. – One-time infusion of cardiosphere-derived cells into the three major coronary arteries seemed to prevent and perhaps even reverse cardiac scarring, as well as improve arm function, in the open-label phase 1-2 HOPE-Duchenne trial of 25 boys with advanced Duchenne muscular dystrophy.

“Decreased scarring is really a big deal because this is counter to the natural history of Duchenne, where all the scars progress, senior investigator Ronald G. Victor, MD, said at the American Heart Association scientific sessions. “It was gratifying to see that the changes in scar coincided with improved regional systolic wall thickening, particularly in the inferior wall of the left ventricle, which is the very area disproportionately affected early and thus severely in Duchenne.”  

Glucocorticoids are the only thing that help to date, prolonging ambulation by about 3 years, but with Cushingoid features and other well-known side effects.

Cardiosphere-derived cells (CDCs) – cardiac progenitor cells – have shown some promise for heart failure. They don’t seem to engraft and grow, but rather to release extracellular vesicles packed with proteins, RNA, and other bioactive molecules. “They act as a role model to get endogenous cells to do the right thing. That’s what we think,” Dr. Victor said.

The HOPE-Duchenne trial [Halt Cardiomyopathy Progression in Duchenne] randomized 12 boys with Duchenne to usual care and 13 others to usual care plus a single infusion of 75 million CDCs divided equally among the left anterior descending, circumflex, and right coronary arteries. The cells were derived from donated heart muscle. The specific CDC preparation tested was “CAP-1002” from Capricor Therapeutics, the study’s sponsor.

The boys were aged 12-22 years, with a mean age of 17.8 years. They had left ventricle scarring in at least four MRI segments; their mean left ventricle ejection fraction was just below 50%; 68% were wheel-chair bound, and all were on stable steroid regimens.

At 12 months, cardiac scarring had increased about 5% in the control group, but decreased by about 7% in the treatment arm, although with no change ejection fraction improvement (P = .03).

Skeletal muscle was assessed by mid-level and distal performance of upper limb scoring, a measure of arm function developed specifically for Duchenne. “For patients who have lost ambulation, the ability to use a joystick to drive a scooter, the ability to feed themselves and use a computer and cellphone are absolutely key to quality of life,” he said.

At 12 months, performance of upper limb scores were largely unchanged in the control group, but improved in about half of the treated boys. “A couple were quite dramatic,” Dr. Victor said. The differences were statistically significant (P = .007) when limited to subjects who started with scores below 55 points, with 58 points meaning normal function.

On the safety side, nothing unusual happened in the control arm, except a femur fracture.

One boy in the treatment arm went into ventricular fibrillation during the diagnostic angiogram. Five had periprocedural atrial fibrillation. All 13 had periprocedural troponin elevations, versus two boys in the control group over the entire course of the study. Dr. Victor didn’t report any deaths, but safety concerns are probably why Capricor is shifting to intravenous infusion for the next trial, HOPE-2.

Dr. Victor noted that troponin leaks “wax and wane” over time in Duchenne, so the transient increases in the treatment arm “were superimposed on a baseline of abnormal cardiac enzymes.”

The Food and Drug Administration has green-lighted the company’s HOPE-2 trial to start enrollment in early 2018, with a larger number of patients and intravenous CDC delivery at 3 month intervals.

Several investigators were Capricor employees. Others were consultants or reported ownership interests. Dr. Victor was the principal investigator at Cedars-Sinai, and was on the trial’s steering committee. The University of Florida, Gainesville, and Cincinnati Children’s Hospital Medical Center, Ohio, were the other two study sites.

aotto@frontlinemedcom.com

SOURCE: Ronald Victor, MD; 2017 AHA Scientific Sessions abstract number S1177

ANAHEIM, CALIF. – One-time infusion of cardiosphere-derived cells into the three major coronary arteries seemed to prevent and perhaps even reverse cardiac scarring, as well as improve arm function, in the open-label phase 1-2 HOPE-Duchenne trial of 25 boys with advanced Duchenne muscular dystrophy.

“Decreased scarring is really a big deal because this is counter to the natural history of Duchenne, where all the scars progress, senior investigator Ronald G. Victor, MD, said at the American Heart Association scientific sessions. “It was gratifying to see that the changes in scar coincided with improved regional systolic wall thickening, particularly in the inferior wall of the left ventricle, which is the very area disproportionately affected early and thus severely in Duchenne.”  

Glucocorticoids are the only thing that help to date, prolonging ambulation by about 3 years, but with Cushingoid features and other well-known side effects.

Cardiosphere-derived cells (CDCs) – cardiac progenitor cells – have shown some promise for heart failure. They don’t seem to engraft and grow, but rather to release extracellular vesicles packed with proteins, RNA, and other bioactive molecules. “They act as a role model to get endogenous cells to do the right thing. That’s what we think,” Dr. Victor said.

The HOPE-Duchenne trial [Halt Cardiomyopathy Progression in Duchenne] randomized 12 boys with Duchenne to usual care and 13 others to usual care plus a single infusion of 75 million CDCs divided equally among the left anterior descending, circumflex, and right coronary arteries. The cells were derived from donated heart muscle. The specific CDC preparation tested was “CAP-1002” from Capricor Therapeutics, the study’s sponsor.

The boys were aged 12-22 years, with a mean age of 17.8 years. They had left ventricle scarring in at least four MRI segments; their mean left ventricle ejection fraction was just below 50%; 68% were wheel-chair bound, and all were on stable steroid regimens.

At 12 months, cardiac scarring had increased about 5% in the control group, but decreased by about 7% in the treatment arm, although with no change ejection fraction improvement (P = .03).

Skeletal muscle was assessed by mid-level and distal performance of upper limb scoring, a measure of arm function developed specifically for Duchenne. “For patients who have lost ambulation, the ability to use a joystick to drive a scooter, the ability to feed themselves and use a computer and cellphone are absolutely key to quality of life,” he said.

At 12 months, performance of upper limb scores were largely unchanged in the control group, but improved in about half of the treated boys. “A couple were quite dramatic,” Dr. Victor said. The differences were statistically significant (P = .007) when limited to subjects who started with scores below 55 points, with 58 points meaning normal function.

On the safety side, nothing unusual happened in the control arm, except a femur fracture.

One boy in the treatment arm went into ventricular fibrillation during the diagnostic angiogram. Five had periprocedural atrial fibrillation. All 13 had periprocedural troponin elevations, versus two boys in the control group over the entire course of the study. Dr. Victor didn’t report any deaths, but safety concerns are probably why Capricor is shifting to intravenous infusion for the next trial, HOPE-2.

Dr. Victor noted that troponin leaks “wax and wane” over time in Duchenne, so the transient increases in the treatment arm “were superimposed on a baseline of abnormal cardiac enzymes.”

The Food and Drug Administration has green-lighted the company’s HOPE-2 trial to start enrollment in early 2018, with a larger number of patients and intravenous CDC delivery at 3 month intervals.

Several investigators were Capricor employees. Others were consultants or reported ownership interests. Dr. Victor was the principal investigator at Cedars-Sinai, and was on the trial’s steering committee. The University of Florida, Gainesville, and Cincinnati Children’s Hospital Medical Center, Ohio, were the other two study sites.

aotto@frontlinemedcom.com

SOURCE: Ronald Victor, MD; 2017 AHA Scientific Sessions abstract number S1177

ANAHEIM, CALIF. – One-time infusion of cardiosphere-derived cells into the three major coronary arteries seemed to prevent and perhaps even reverse cardiac scarring, as well as improve arm function, in the open-label phase 1-2 HOPE-Duchenne trial of 25 boys with advanced Duchenne muscular dystrophy.

“Decreased scarring is really a big deal because this is counter to the natural history of Duchenne, where all the scars progress, senior investigator Ronald G. Victor, MD, said at the American Heart Association scientific sessions. “It was gratifying to see that the changes in scar coincided with improved regional systolic wall thickening, particularly in the inferior wall of the left ventricle, which is the very area disproportionately affected early and thus severely in Duchenne.”  

Glucocorticoids are the only thing that help to date, prolonging ambulation by about 3 years, but with Cushingoid features and other well-known side effects.

Cardiosphere-derived cells (CDCs) – cardiac progenitor cells – have shown some promise for heart failure. They don’t seem to engraft and grow, but rather to release extracellular vesicles packed with proteins, RNA, and other bioactive molecules. “They act as a role model to get endogenous cells to do the right thing. That’s what we think,” Dr. Victor said.

The HOPE-Duchenne trial [Halt Cardiomyopathy Progression in Duchenne] randomized 12 boys with Duchenne to usual care and 13 others to usual care plus a single infusion of 75 million CDCs divided equally among the left anterior descending, circumflex, and right coronary arteries. The cells were derived from donated heart muscle. The specific CDC preparation tested was “CAP-1002” from Capricor Therapeutics, the study’s sponsor.

The boys were aged 12-22 years, with a mean age of 17.8 years. They had left ventricle scarring in at least four MRI segments; their mean left ventricle ejection fraction was just below 50%; 68% were wheel-chair bound, and all were on stable steroid regimens.

At 12 months, cardiac scarring had increased about 5% in the control group, but decreased by about 7% in the treatment arm, although with no change ejection fraction improvement (P = .03).

Skeletal muscle was assessed by mid-level and distal performance of upper limb scoring, a measure of arm function developed specifically for Duchenne. “For patients who have lost ambulation, the ability to use a joystick to drive a scooter, the ability to feed themselves and use a computer and cellphone are absolutely key to quality of life,” he said.

At 12 months, performance of upper limb scores were largely unchanged in the control group, but improved in about half of the treated boys. “A couple were quite dramatic,” Dr. Victor said. The differences were statistically significant (P = .007) when limited to subjects who started with scores below 55 points, with 58 points meaning normal function.

On the safety side, nothing unusual happened in the control arm, except a femur fracture.

One boy in the treatment arm went into ventricular fibrillation during the diagnostic angiogram. Five had periprocedural atrial fibrillation. All 13 had periprocedural troponin elevations, versus two boys in the control group over the entire course of the study. Dr. Victor didn’t report any deaths, but safety concerns are probably why Capricor is shifting to intravenous infusion for the next trial, HOPE-2.

Dr. Victor noted that troponin leaks “wax and wane” over time in Duchenne, so the transient increases in the treatment arm “were superimposed on a baseline of abnormal cardiac enzymes.”

The Food and Drug Administration has green-lighted the company’s HOPE-2 trial to start enrollment in early 2018, with a larger number of patients and intravenous CDC delivery at 3 month intervals.

Several investigators were Capricor employees. Others were consultants or reported ownership interests. Dr. Victor was the principal investigator at Cedars-Sinai, and was on the trial’s steering committee. The University of Florida, Gainesville, and Cincinnati Children’s Hospital Medical Center, Ohio, were the other two study sites.

aotto@frontlinemedcom.com

SOURCE: Ronald Victor, MD; 2017 AHA Scientific Sessions abstract number S1177

Waldenstrom disease, also known as Waldenstrom macroglobulinemia, has been linked to a rare bilateral facial nerve palsy in a second case report.

Bilateral facial nerve palsy has been associated with underlying Waldenstrom disease in only one other known published case report, which was published in 2014. In a more recent case report published in the Journal of Clinical Neuroscience, Gabriel Torrealba-Acosta, MD, and colleagues in the department of neurology at Massachusetts General Hospital, Boston, described a second case involving a 67-year-old Hispanic man with a history of Waldenstrom disease who presented with subacute onset of bilateral facial weakness.

Michail Charakidis, David Joseph Russell/Wikimedia Commons/CC BY 2.0

SOURCE: Torrealba-Acosta G et al. J Clin Neurosci. 2017. doi: 10.1016/j.jocn.2017.10.081.

Waldenstrom disease, also known as Waldenstrom macroglobulinemia, has been linked to a rare bilateral facial nerve palsy in a second case report.

Bilateral facial nerve palsy has been associated with underlying Waldenstrom disease in only one other known published case report, which was published in 2014. In a more recent case report published in the Journal of Clinical Neuroscience, Gabriel Torrealba-Acosta, MD, and colleagues in the department of neurology at Massachusetts General Hospital, Boston, described a second case involving a 67-year-old Hispanic man with a history of Waldenstrom disease who presented with subacute onset of bilateral facial weakness.

Michail Charakidis, David Joseph Russell/Wikimedia Commons/CC BY 2.0

SOURCE: Torrealba-Acosta G et al. J Clin Neurosci. 2017. doi: 10.1016/j.jocn.2017.10.081.

Waldenstrom disease, also known as Waldenstrom macroglobulinemia, has been linked to a rare bilateral facial nerve palsy in a second case report.

Bilateral facial nerve palsy has been associated with underlying Waldenstrom disease in only one other known published case report, which was published in 2014. In a more recent case report published in the Journal of Clinical Neuroscience, Gabriel Torrealba-Acosta, MD, and colleagues in the department of neurology at Massachusetts General Hospital, Boston, described a second case involving a 67-year-old Hispanic man with a history of Waldenstrom disease who presented with subacute onset of bilateral facial weakness.

Michail Charakidis, David Joseph Russell/Wikimedia Commons/CC BY 2.0

SOURCE: Torrealba-Acosta G et al. J Clin Neurosci. 2017. doi: 10.1016/j.jocn.2017.10.081.

On May 5, 2017, the Food and Drug Administration approved edaravone (Radicava) for the treatment of patients with amyotrophic lateral sclerosis (ALS). Developed by Mitsubishi Tanabe Pharma Corporation, edaravone is the first FDA-approved treatment for ALS since the approval of riluzole (Rilutek) in 1995. Edaravone was originally developed as an acute stroke treatment and then later studied in two separate trials in Japan to assess its efficacy in treating ALS.

Ms. Chang is a research intern, and Dr. Ross is a professor of neurology and director of the ALS Clinic, at Mayo Clinic Arizona in Scottsdale. Dr. Ross reported serving as the Mayo Clinic Arizona site primary investigator for the ALS investigational drug NP001.

On May 5, 2017, the Food and Drug Administration approved edaravone (Radicava) for the treatment of patients with amyotrophic lateral sclerosis (ALS). Developed by Mitsubishi Tanabe Pharma Corporation, edaravone is the first FDA-approved treatment for ALS since the approval of riluzole (Rilutek) in 1995. Edaravone was originally developed as an acute stroke treatment and then later studied in two separate trials in Japan to assess its efficacy in treating ALS.

Ms. Chang is a research intern, and Dr. Ross is a professor of neurology and director of the ALS Clinic, at Mayo Clinic Arizona in Scottsdale. Dr. Ross reported serving as the Mayo Clinic Arizona site primary investigator for the ALS investigational drug NP001.

On May 5, 2017, the Food and Drug Administration approved edaravone (Radicava) for the treatment of patients with amyotrophic lateral sclerosis (ALS). Developed by Mitsubishi Tanabe Pharma Corporation, edaravone is the first FDA-approved treatment for ALS since the approval of riluzole (Rilutek) in 1995. Edaravone was originally developed as an acute stroke treatment and then later studied in two separate trials in Japan to assess its efficacy in treating ALS.

Ms. Chang is a research intern, and Dr. Ross is a professor of neurology and director of the ALS Clinic, at Mayo Clinic Arizona in Scottsdale. Dr. Ross reported serving as the Mayo Clinic Arizona site primary investigator for the ALS investigational drug NP001.

Newly identified risk factors add to the growing evidence of a causal association between Zika virus and Guillain-Barré Syndrome (GBS), according to a case-control study.

In a study conducted in Puerto Rico, GBS diagnosis was confirmed in 39 of 47 (83%) patients with clinical suspicion of the syndrome from nine hospitals from April 2016 to December 2016. They were compared with 78 control patients to identify GBS risk factors. Three risk factors were identified, Emilio Dirlikov, PhD, of the division of scientific education and professional development for the Centers for Disease Control and Prevention in San Juan, Puerto Rico, and his coauthors said in a research letter to JAMA (2017;318[15]:1498).

Aunt_Spray/Thinkstock

Newly identified risk factors add to the growing evidence of a causal association between Zika virus and Guillain-Barré Syndrome (GBS), according to a case-control study.

In a study conducted in Puerto Rico, GBS diagnosis was confirmed in 39 of 47 (83%) patients with clinical suspicion of the syndrome from nine hospitals from April 2016 to December 2016. They were compared with 78 control patients to identify GBS risk factors. Three risk factors were identified, Emilio Dirlikov, PhD, of the division of scientific education and professional development for the Centers for Disease Control and Prevention in San Juan, Puerto Rico, and his coauthors said in a research letter to JAMA (2017;318[15]:1498).

Aunt_Spray/Thinkstock

Newly identified risk factors add to the growing evidence of a causal association between Zika virus and Guillain-Barré Syndrome (GBS), according to a case-control study.

In a study conducted in Puerto Rico, GBS diagnosis was confirmed in 39 of 47 (83%) patients with clinical suspicion of the syndrome from nine hospitals from April 2016 to December 2016. They were compared with 78 control patients to identify GBS risk factors. Three risk factors were identified, Emilio Dirlikov, PhD, of the division of scientific education and professional development for the Centers for Disease Control and Prevention in San Juan, Puerto Rico, and his coauthors said in a research letter to JAMA (2017;318[15]:1498).

Aunt_Spray/Thinkstock