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A routine scan used to evaluate some acute stroke patients can also detect SARS-CoV-2 infection in the upper lungs, a new study shows.

“As part of the stroke evaluation workup process, we were able to diagnose COVID-19 at the same time at no extra cost or additional workload,” lead author Charles Esenwa, MD, commented to Medscape Medical News. “This is an objective way to screen for COVID-19 in the acute stroke setting,” he added.

Esenwa is an assistant professor and a stroke neurologist at the Montefiore Medical Center/Albert Einstein College of Medicine in New York City.

He explained that, during the COVID-19 surge earlier this year, assessment of patients with severe acute stroke using computed tomography angiogram (CTA) scans – used to evaluate suitability for endovascular stroke therapy – also showed findings in the upper lung consistent with viral infection in some patients.

“We then assumed that these patients had COVID-19 and took extra precautions to keep them isolated and to protect staff involved in their care. It also allowed us to triage these patients more quickly than waiting for the COVID-19 swab test and arrange the most appropriate care for them,” Esenwa said.

The researchers have now gone back and analyzed their data on acute stroke patients who underwent CTA at their institution during the COVID-19 surge. They found that the changes identified in the lungs were highly specific for diagnosing SARS-CoV-2 infection.

The study was published online on Oct. 29 in Stroke.

“Stroke patients are normally screened for COVID-19 on hospitalization, but the swab test result can take several hours or longer to come back, and it is very useful for us to know if a patient could be infected,” Esenwa noted.

“When we do a CTA, we look at the blood vessels supplying the brain, but the scan also covers the top of the lung, as it starts at the aortic arch. We don’t normally look closely at that area, but we started to notice signs of active lung infection which could have been COVID-19,” he said. “For this paper, we went back to assess how accurate this approach actually was vs. the COVID-19 PCR test.”

The researchers report on 57 patients who presented to three Montefiore Health System hospitals in the Bronx, in New York City, with acute ischemic stroke and who underwent CTA of the head and neck in March and April 2020, the peak of the COVID-19 outbreak there. The patients also underwent PCR testing for COVID-19.

Results showed that 30 patients had a positive COVID-19 test result and that 27 had a negative result. Lung findings highly or very highly suspicious for COVID-19 pneumonia were identified during the CTA scan in 20 (67%) of the COVID-19–positive patients and in two (7%) of the COVID-19–negative patients.

These findings, when used in isolation, yielded a sensitivity of 0.67 and a specificity of 0.93. They had a positive predictive value of 0.19, a negative predictive value of 0.99, and accuracy of 0.92 for the diagnosis of COVID-19.

When apical lung assessment was combined with self-reported clinical symptoms of cough or dyspnea, sensitivity for the diagnosis of COVID-19 for patients presenting to the hospital for acute ischemic stroke increased to 0.83.

“We wondered whether looking at the whole lung would have found better results, but other studies which have done this actually found similar numbers to ours, so we think actually just looking at the top of the lungs, which can be seen in a stroke CTA, may be sufficient,” Esenwa said.

He emphasized the importance of establishing whether an acute stroke patient has COVID-19. “If we had a high suspicion of COVID-19 infection, we would take more precautions during any procedures, such as thrombectomy, and make sure to keep the patient isolated afterwards. It doesn’t necessarily affect the treatment given for stroke, but it affects the safety of the patients and everyone caring for them,” he commented.

Esenwa explained that intubation – which is sometime necessary during thrombectomy – can expose everyone in the room to aerosolized droplets. “So we would take much higher safety precautions if we thought the patient was COVID-19 positive,” he said.

“Early COVID-19 diagnosis also means patients can be given supportive treatment more quickly, admitted to ICU if appropriate, and we can all keep a close eye on pulmonary issues. So having that information is important in many ways,” he added.

Esenwa advises that any medical center that evaluates acute stroke patients for thrombectomy and is experiencing a COVID-19 surge can use this technique as a screening method for COVID-19.

He pointed out that the Montefiore Health System had a very high rate of COVID-19. That part of New York City was one of the worst hit areas of the world, and the CTA approach for identifying COVID-19 has been validated only in areas with such a high local incidence of COVID. If used in an area of lower prevalence, the accuracy would likely be less.

“We don’t know if this approach would work as well at times of low COVID-19 infection, where any lung findings would be more likely to be caused by other conditions, such as pneumonia due to other causes or congestive heart failure. So there would be more false positives,” Esenwa said.

“But when COVID-19 prevalence is high, the lung findings are much more likely to be a sign of COVID-19 infection. As COVID-19 numbers are now rising for a second time, it is likely to become a useful strategy again.”

The study was approved by the Albert Einstein College of Medicine/Montefiore Medical Center Institutional Review Board and had no external funding. Esenwa has disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

A routine scan used to evaluate some acute stroke patients can also detect SARS-CoV-2 infection in the upper lungs, a new study shows.

“As part of the stroke evaluation workup process, we were able to diagnose COVID-19 at the same time at no extra cost or additional workload,” lead author Charles Esenwa, MD, commented to Medscape Medical News. “This is an objective way to screen for COVID-19 in the acute stroke setting,” he added.

Esenwa is an assistant professor and a stroke neurologist at the Montefiore Medical Center/Albert Einstein College of Medicine in New York City.

He explained that, during the COVID-19 surge earlier this year, assessment of patients with severe acute stroke using computed tomography angiogram (CTA) scans – used to evaluate suitability for endovascular stroke therapy – also showed findings in the upper lung consistent with viral infection in some patients.

“We then assumed that these patients had COVID-19 and took extra precautions to keep them isolated and to protect staff involved in their care. It also allowed us to triage these patients more quickly than waiting for the COVID-19 swab test and arrange the most appropriate care for them,” Esenwa said.

The researchers have now gone back and analyzed their data on acute stroke patients who underwent CTA at their institution during the COVID-19 surge. They found that the changes identified in the lungs were highly specific for diagnosing SARS-CoV-2 infection.

The study was published online on Oct. 29 in Stroke.

“Stroke patients are normally screened for COVID-19 on hospitalization, but the swab test result can take several hours or longer to come back, and it is very useful for us to know if a patient could be infected,” Esenwa noted.

“When we do a CTA, we look at the blood vessels supplying the brain, but the scan also covers the top of the lung, as it starts at the aortic arch. We don’t normally look closely at that area, but we started to notice signs of active lung infection which could have been COVID-19,” he said. “For this paper, we went back to assess how accurate this approach actually was vs. the COVID-19 PCR test.”

The researchers report on 57 patients who presented to three Montefiore Health System hospitals in the Bronx, in New York City, with acute ischemic stroke and who underwent CTA of the head and neck in March and April 2020, the peak of the COVID-19 outbreak there. The patients also underwent PCR testing for COVID-19.

Results showed that 30 patients had a positive COVID-19 test result and that 27 had a negative result. Lung findings highly or very highly suspicious for COVID-19 pneumonia were identified during the CTA scan in 20 (67%) of the COVID-19–positive patients and in two (7%) of the COVID-19–negative patients.

These findings, when used in isolation, yielded a sensitivity of 0.67 and a specificity of 0.93. They had a positive predictive value of 0.19, a negative predictive value of 0.99, and accuracy of 0.92 for the diagnosis of COVID-19.

When apical lung assessment was combined with self-reported clinical symptoms of cough or dyspnea, sensitivity for the diagnosis of COVID-19 for patients presenting to the hospital for acute ischemic stroke increased to 0.83.

“We wondered whether looking at the whole lung would have found better results, but other studies which have done this actually found similar numbers to ours, so we think actually just looking at the top of the lungs, which can be seen in a stroke CTA, may be sufficient,” Esenwa said.

He emphasized the importance of establishing whether an acute stroke patient has COVID-19. “If we had a high suspicion of COVID-19 infection, we would take more precautions during any procedures, such as thrombectomy, and make sure to keep the patient isolated afterwards. It doesn’t necessarily affect the treatment given for stroke, but it affects the safety of the patients and everyone caring for them,” he commented.

Esenwa explained that intubation – which is sometime necessary during thrombectomy – can expose everyone in the room to aerosolized droplets. “So we would take much higher safety precautions if we thought the patient was COVID-19 positive,” he said.

“Early COVID-19 diagnosis also means patients can be given supportive treatment more quickly, admitted to ICU if appropriate, and we can all keep a close eye on pulmonary issues. So having that information is important in many ways,” he added.

Esenwa advises that any medical center that evaluates acute stroke patients for thrombectomy and is experiencing a COVID-19 surge can use this technique as a screening method for COVID-19.

He pointed out that the Montefiore Health System had a very high rate of COVID-19. That part of New York City was one of the worst hit areas of the world, and the CTA approach for identifying COVID-19 has been validated only in areas with such a high local incidence of COVID. If used in an area of lower prevalence, the accuracy would likely be less.

“We don’t know if this approach would work as well at times of low COVID-19 infection, where any lung findings would be more likely to be caused by other conditions, such as pneumonia due to other causes or congestive heart failure. So there would be more false positives,” Esenwa said.

“But when COVID-19 prevalence is high, the lung findings are much more likely to be a sign of COVID-19 infection. As COVID-19 numbers are now rising for a second time, it is likely to become a useful strategy again.”

The study was approved by the Albert Einstein College of Medicine/Montefiore Medical Center Institutional Review Board and had no external funding. Esenwa has disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

A routine scan used to evaluate some acute stroke patients can also detect SARS-CoV-2 infection in the upper lungs, a new study shows.

“As part of the stroke evaluation workup process, we were able to diagnose COVID-19 at the same time at no extra cost or additional workload,” lead author Charles Esenwa, MD, commented to Medscape Medical News. “This is an objective way to screen for COVID-19 in the acute stroke setting,” he added.

Esenwa is an assistant professor and a stroke neurologist at the Montefiore Medical Center/Albert Einstein College of Medicine in New York City.

He explained that, during the COVID-19 surge earlier this year, assessment of patients with severe acute stroke using computed tomography angiogram (CTA) scans – used to evaluate suitability for endovascular stroke therapy – also showed findings in the upper lung consistent with viral infection in some patients.

“We then assumed that these patients had COVID-19 and took extra precautions to keep them isolated and to protect staff involved in their care. It also allowed us to triage these patients more quickly than waiting for the COVID-19 swab test and arrange the most appropriate care for them,” Esenwa said.

The researchers have now gone back and analyzed their data on acute stroke patients who underwent CTA at their institution during the COVID-19 surge. They found that the changes identified in the lungs were highly specific for diagnosing SARS-CoV-2 infection.

The study was published online on Oct. 29 in Stroke.

“Stroke patients are normally screened for COVID-19 on hospitalization, but the swab test result can take several hours or longer to come back, and it is very useful for us to know if a patient could be infected,” Esenwa noted.

“When we do a CTA, we look at the blood vessels supplying the brain, but the scan also covers the top of the lung, as it starts at the aortic arch. We don’t normally look closely at that area, but we started to notice signs of active lung infection which could have been COVID-19,” he said. “For this paper, we went back to assess how accurate this approach actually was vs. the COVID-19 PCR test.”

The researchers report on 57 patients who presented to three Montefiore Health System hospitals in the Bronx, in New York City, with acute ischemic stroke and who underwent CTA of the head and neck in March and April 2020, the peak of the COVID-19 outbreak there. The patients also underwent PCR testing for COVID-19.

Results showed that 30 patients had a positive COVID-19 test result and that 27 had a negative result. Lung findings highly or very highly suspicious for COVID-19 pneumonia were identified during the CTA scan in 20 (67%) of the COVID-19–positive patients and in two (7%) of the COVID-19–negative patients.

These findings, when used in isolation, yielded a sensitivity of 0.67 and a specificity of 0.93. They had a positive predictive value of 0.19, a negative predictive value of 0.99, and accuracy of 0.92 for the diagnosis of COVID-19.

When apical lung assessment was combined with self-reported clinical symptoms of cough or dyspnea, sensitivity for the diagnosis of COVID-19 for patients presenting to the hospital for acute ischemic stroke increased to 0.83.

“We wondered whether looking at the whole lung would have found better results, but other studies which have done this actually found similar numbers to ours, so we think actually just looking at the top of the lungs, which can be seen in a stroke CTA, may be sufficient,” Esenwa said.

He emphasized the importance of establishing whether an acute stroke patient has COVID-19. “If we had a high suspicion of COVID-19 infection, we would take more precautions during any procedures, such as thrombectomy, and make sure to keep the patient isolated afterwards. It doesn’t necessarily affect the treatment given for stroke, but it affects the safety of the patients and everyone caring for them,” he commented.

Esenwa explained that intubation – which is sometime necessary during thrombectomy – can expose everyone in the room to aerosolized droplets. “So we would take much higher safety precautions if we thought the patient was COVID-19 positive,” he said.

“Early COVID-19 diagnosis also means patients can be given supportive treatment more quickly, admitted to ICU if appropriate, and we can all keep a close eye on pulmonary issues. So having that information is important in many ways,” he added.

Esenwa advises that any medical center that evaluates acute stroke patients for thrombectomy and is experiencing a COVID-19 surge can use this technique as a screening method for COVID-19.

He pointed out that the Montefiore Health System had a very high rate of COVID-19. That part of New York City was one of the worst hit areas of the world, and the CTA approach for identifying COVID-19 has been validated only in areas with such a high local incidence of COVID. If used in an area of lower prevalence, the accuracy would likely be less.

“We don’t know if this approach would work as well at times of low COVID-19 infection, where any lung findings would be more likely to be caused by other conditions, such as pneumonia due to other causes or congestive heart failure. So there would be more false positives,” Esenwa said.

“But when COVID-19 prevalence is high, the lung findings are much more likely to be a sign of COVID-19 infection. As COVID-19 numbers are now rising for a second time, it is likely to become a useful strategy again.”

The study was approved by the Albert Einstein College of Medicine/Montefiore Medical Center Institutional Review Board and had no external funding. Esenwa has disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

A cumulative 511,000 lives could be lost from COVID-19 in the United States by the end of February 2021, a new prediction study reveals.

However, if universal mask wearing is adopted — defined as 95% of Americans complying with the protective measure — along with social distancing mandates as warranted, nearly 130,000 of those lives could be saved.

And if even 85% of Americans comply, an additional 95,800 lives would be spared before March of next year, researchers at the University of Washington Institute for Health Metrics and Evaluation (IHME) report.

The study was published online October 23 in Nature Medicine.

“The study is sound and makes the case for mandatory mask policies,” said Arthur L. Caplan, PhD, a professor of bioethics at NYU Langone Health in New York City, who frequently provides commentary for Medscape.

Without mandatory mask requirements, he added, “we will see a pandemic slaughter and an overwhelmed healthcare system and workforce.”

The IHME team evaluated COVID-19 data for cases and related deaths between February 1 and September 21. Based on this data, they predicted the likely future of SARS-CoV-2 infections on a state level from September 22, 2020, to February 2021.

An Optimistic Projection

Lead author Robert C. Reiner Jr and colleagues looked at five scenarios. For example, they calculated likely deaths associated with COVID-19 if adoption of mask and social distancing recommendations were nearly universal. They note that Singapore achieved a 95% compliance rate with masks and used this as their “best-case scenario” model.

An estimated 129,574 (range, 85,284–170,867) additional lives could be saved if 95% of Americans wore masks in public, their research reveals. This optimistic scenario includes a “plausible reference” in which any US state reaching 8 COVID-19 deaths per 1 million residents would enact 6 weeks of social distancing mandates (SDMs).

Achieving this level of mask compliance in the United States “could be sufficient to ameliorate the worst effects of epidemic resurgences in many states,” the researchers note.

In contrast, the proportion of Americans wearing masks in public as of September 22 was 49%, according to IHME data.
 

Universal mask use unlikely

“I’m not a modeling expert, but it is an interesting, and as far as I can judge, well-conducted study which looks, state by state, at what might happen in various scenarios around masking policies going forward — and in particular the effect that mandated masking might have,” Trish Greenhalgh, MD, told Medscape Medical News.  

“However, the scenario is a thought experiment. Near-universal mask use is not going to happen in the USA, nor indeed in any individual state, right now, given how emotive the issue has become,” added Greenhalgh, professor in the Nuffield Department of Primary Care Health Sciences at Oxford University, UK. She was not affiliated with the study.

“Hence, whilst I am broadly supportive of the science,” she said, “I’m not confident that this paper will be able to change policy.”
 

Other ‘What if?’ scenarios

The authors also predicted the mortality implications associated with lower adherence to masks, the presence or absence of SDMs, and what could happen if mandates continue to ease at their current rate.

For example, they considered a scenario with less-than-universal mask use in public, 85%, along with SDMs being reinstated based on the mortality rate threshold. In this instance, they found an additional 95,814 (range, 60,731–133,077) lives could be spared by February 28.

Another calculation looked at outcomes if 95% of Americans wore masks going forward without states instituting SDMs at any point. In this case, the researchers predict that 490,437 Americans would die from COVID-19 by February 2021.

A fourth analysis revealed what would happen without greater mask use if the mortality threshold triggered 6 weeks of SDMs as warranted. Under this ‘plausible reference’ calculation, a total 511,373 Americans would die from COVID-19 by the end of February.

A fifth scenario predicted potential mortality if states continue easing SDMs at the current pace. “This is an alternative scenario to the more probable situation where states are expected to respond to an impending health crisis by reinstating some SDMs,” the authors note. The predicted number of American deaths appears more dire in this calculation. The investigators predict cumulative total deaths could reach 1,053,206 (range, 759,693–1,452,397) by the end of February 2021.

The death toll would likely vary among states in this scenario. California, Florida, and Pennsylvania would like account for approximately one third of all deaths.

All the modeling scenarios considered other factors including pneumonia seasonality, mobility, testing rates, and mask use per capita.
 

“I have seen the IHME study and I agree with the broad conclusions,” Richard Stutt, PhD, of the Epidemiology and Modelling Group at the University of Cambridge, UK, told Medscape Medical News.

“Case numbers are climbing in the US, and without further intervention, there will be a significant number of deaths over the coming months,” he said.

Masks are low cost and widely available, Stutt said. “I am hopeful that even if masks are not widely adopted, we will not see as many deaths as predicted here, as these outbreaks can be significantly reduced by increased social distancing or lockdowns.”

“However this comes at a far higher economic cost than the use of masks, and still requires action,” added Stutt, who authored a study in June that modeled facemasks in combination with “lock-down” measures for managing the COVID-19 pandemic.

Modeling study results depend on the assumptions researchers make, and the IHME team rightly tested a number of different assumptions, Greenhalgh said.

“The key conclusion,” she added, “is here: ‘The implementation of SDMs as soon as individual states reach a threshold of 8 daily deaths per million could dramatically ameliorate the effects of the disease; achieving near-universal mask use could delay, or in many states, possibly prevent, this threshold from being reached and has the potential to save the most lives while minimizing damage to the economy.’ “

“This is a useful piece of information and I think is borne out by their data,” added Greenhalgh, lead author of an April study on face masks for the public during the pandemic.

You can visit the IHME website for the most current mortality projections.

Caplan, Greenhalgh, and Stutt have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

A cumulative 511,000 lives could be lost from COVID-19 in the United States by the end of February 2021, a new prediction study reveals.

However, if universal mask wearing is adopted — defined as 95% of Americans complying with the protective measure — along with social distancing mandates as warranted, nearly 130,000 of those lives could be saved.

And if even 85% of Americans comply, an additional 95,800 lives would be spared before March of next year, researchers at the University of Washington Institute for Health Metrics and Evaluation (IHME) report.

The study was published online October 23 in Nature Medicine.

“The study is sound and makes the case for mandatory mask policies,” said Arthur L. Caplan, PhD, a professor of bioethics at NYU Langone Health in New York City, who frequently provides commentary for Medscape.

Without mandatory mask requirements, he added, “we will see a pandemic slaughter and an overwhelmed healthcare system and workforce.”

The IHME team evaluated COVID-19 data for cases and related deaths between February 1 and September 21. Based on this data, they predicted the likely future of SARS-CoV-2 infections on a state level from September 22, 2020, to February 2021.

An Optimistic Projection

Lead author Robert C. Reiner Jr and colleagues looked at five scenarios. For example, they calculated likely deaths associated with COVID-19 if adoption of mask and social distancing recommendations were nearly universal. They note that Singapore achieved a 95% compliance rate with masks and used this as their “best-case scenario” model.

An estimated 129,574 (range, 85,284–170,867) additional lives could be saved if 95% of Americans wore masks in public, their research reveals. This optimistic scenario includes a “plausible reference” in which any US state reaching 8 COVID-19 deaths per 1 million residents would enact 6 weeks of social distancing mandates (SDMs).

Achieving this level of mask compliance in the United States “could be sufficient to ameliorate the worst effects of epidemic resurgences in many states,” the researchers note.

In contrast, the proportion of Americans wearing masks in public as of September 22 was 49%, according to IHME data.
 

Universal mask use unlikely

“I’m not a modeling expert, but it is an interesting, and as far as I can judge, well-conducted study which looks, state by state, at what might happen in various scenarios around masking policies going forward — and in particular the effect that mandated masking might have,” Trish Greenhalgh, MD, told Medscape Medical News.  

“However, the scenario is a thought experiment. Near-universal mask use is not going to happen in the USA, nor indeed in any individual state, right now, given how emotive the issue has become,” added Greenhalgh, professor in the Nuffield Department of Primary Care Health Sciences at Oxford University, UK. She was not affiliated with the study.

“Hence, whilst I am broadly supportive of the science,” she said, “I’m not confident that this paper will be able to change policy.”
 

Other ‘What if?’ scenarios

The authors also predicted the mortality implications associated with lower adherence to masks, the presence or absence of SDMs, and what could happen if mandates continue to ease at their current rate.

For example, they considered a scenario with less-than-universal mask use in public, 85%, along with SDMs being reinstated based on the mortality rate threshold. In this instance, they found an additional 95,814 (range, 60,731–133,077) lives could be spared by February 28.

Another calculation looked at outcomes if 95% of Americans wore masks going forward without states instituting SDMs at any point. In this case, the researchers predict that 490,437 Americans would die from COVID-19 by February 2021.

A fourth analysis revealed what would happen without greater mask use if the mortality threshold triggered 6 weeks of SDMs as warranted. Under this ‘plausible reference’ calculation, a total 511,373 Americans would die from COVID-19 by the end of February.

A fifth scenario predicted potential mortality if states continue easing SDMs at the current pace. “This is an alternative scenario to the more probable situation where states are expected to respond to an impending health crisis by reinstating some SDMs,” the authors note. The predicted number of American deaths appears more dire in this calculation. The investigators predict cumulative total deaths could reach 1,053,206 (range, 759,693–1,452,397) by the end of February 2021.

The death toll would likely vary among states in this scenario. California, Florida, and Pennsylvania would like account for approximately one third of all deaths.

All the modeling scenarios considered other factors including pneumonia seasonality, mobility, testing rates, and mask use per capita.
 

“I have seen the IHME study and I agree with the broad conclusions,” Richard Stutt, PhD, of the Epidemiology and Modelling Group at the University of Cambridge, UK, told Medscape Medical News.

“Case numbers are climbing in the US, and without further intervention, there will be a significant number of deaths over the coming months,” he said.

Masks are low cost and widely available, Stutt said. “I am hopeful that even if masks are not widely adopted, we will not see as many deaths as predicted here, as these outbreaks can be significantly reduced by increased social distancing or lockdowns.”

“However this comes at a far higher economic cost than the use of masks, and still requires action,” added Stutt, who authored a study in June that modeled facemasks in combination with “lock-down” measures for managing the COVID-19 pandemic.

Modeling study results depend on the assumptions researchers make, and the IHME team rightly tested a number of different assumptions, Greenhalgh said.

“The key conclusion,” she added, “is here: ‘The implementation of SDMs as soon as individual states reach a threshold of 8 daily deaths per million could dramatically ameliorate the effects of the disease; achieving near-universal mask use could delay, or in many states, possibly prevent, this threshold from being reached and has the potential to save the most lives while minimizing damage to the economy.’ “

“This is a useful piece of information and I think is borne out by their data,” added Greenhalgh, lead author of an April study on face masks for the public during the pandemic.

You can visit the IHME website for the most current mortality projections.

Caplan, Greenhalgh, and Stutt have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

A cumulative 511,000 lives could be lost from COVID-19 in the United States by the end of February 2021, a new prediction study reveals.

However, if universal mask wearing is adopted — defined as 95% of Americans complying with the protective measure — along with social distancing mandates as warranted, nearly 130,000 of those lives could be saved.

And if even 85% of Americans comply, an additional 95,800 lives would be spared before March of next year, researchers at the University of Washington Institute for Health Metrics and Evaluation (IHME) report.

The study was published online October 23 in Nature Medicine.

“The study is sound and makes the case for mandatory mask policies,” said Arthur L. Caplan, PhD, a professor of bioethics at NYU Langone Health in New York City, who frequently provides commentary for Medscape.

Without mandatory mask requirements, he added, “we will see a pandemic slaughter and an overwhelmed healthcare system and workforce.”

The IHME team evaluated COVID-19 data for cases and related deaths between February 1 and September 21. Based on this data, they predicted the likely future of SARS-CoV-2 infections on a state level from September 22, 2020, to February 2021.

An Optimistic Projection

Lead author Robert C. Reiner Jr and colleagues looked at five scenarios. For example, they calculated likely deaths associated with COVID-19 if adoption of mask and social distancing recommendations were nearly universal. They note that Singapore achieved a 95% compliance rate with masks and used this as their “best-case scenario” model.

An estimated 129,574 (range, 85,284–170,867) additional lives could be saved if 95% of Americans wore masks in public, their research reveals. This optimistic scenario includes a “plausible reference” in which any US state reaching 8 COVID-19 deaths per 1 million residents would enact 6 weeks of social distancing mandates (SDMs).

Achieving this level of mask compliance in the United States “could be sufficient to ameliorate the worst effects of epidemic resurgences in many states,” the researchers note.

In contrast, the proportion of Americans wearing masks in public as of September 22 was 49%, according to IHME data.
 

Universal mask use unlikely

“I’m not a modeling expert, but it is an interesting, and as far as I can judge, well-conducted study which looks, state by state, at what might happen in various scenarios around masking policies going forward — and in particular the effect that mandated masking might have,” Trish Greenhalgh, MD, told Medscape Medical News.  

“However, the scenario is a thought experiment. Near-universal mask use is not going to happen in the USA, nor indeed in any individual state, right now, given how emotive the issue has become,” added Greenhalgh, professor in the Nuffield Department of Primary Care Health Sciences at Oxford University, UK. She was not affiliated with the study.

“Hence, whilst I am broadly supportive of the science,” she said, “I’m not confident that this paper will be able to change policy.”
 

Other ‘What if?’ scenarios

The authors also predicted the mortality implications associated with lower adherence to masks, the presence or absence of SDMs, and what could happen if mandates continue to ease at their current rate.

For example, they considered a scenario with less-than-universal mask use in public, 85%, along with SDMs being reinstated based on the mortality rate threshold. In this instance, they found an additional 95,814 (range, 60,731–133,077) lives could be spared by February 28.

Another calculation looked at outcomes if 95% of Americans wore masks going forward without states instituting SDMs at any point. In this case, the researchers predict that 490,437 Americans would die from COVID-19 by February 2021.

A fourth analysis revealed what would happen without greater mask use if the mortality threshold triggered 6 weeks of SDMs as warranted. Under this ‘plausible reference’ calculation, a total 511,373 Americans would die from COVID-19 by the end of February.

A fifth scenario predicted potential mortality if states continue easing SDMs at the current pace. “This is an alternative scenario to the more probable situation where states are expected to respond to an impending health crisis by reinstating some SDMs,” the authors note. The predicted number of American deaths appears more dire in this calculation. The investigators predict cumulative total deaths could reach 1,053,206 (range, 759,693–1,452,397) by the end of February 2021.

The death toll would likely vary among states in this scenario. California, Florida, and Pennsylvania would like account for approximately one third of all deaths.

All the modeling scenarios considered other factors including pneumonia seasonality, mobility, testing rates, and mask use per capita.
 

“I have seen the IHME study and I agree with the broad conclusions,” Richard Stutt, PhD, of the Epidemiology and Modelling Group at the University of Cambridge, UK, told Medscape Medical News.

“Case numbers are climbing in the US, and without further intervention, there will be a significant number of deaths over the coming months,” he said.

Masks are low cost and widely available, Stutt said. “I am hopeful that even if masks are not widely adopted, we will not see as many deaths as predicted here, as these outbreaks can be significantly reduced by increased social distancing or lockdowns.”

“However this comes at a far higher economic cost than the use of masks, and still requires action,” added Stutt, who authored a study in June that modeled facemasks in combination with “lock-down” measures for managing the COVID-19 pandemic.

Modeling study results depend on the assumptions researchers make, and the IHME team rightly tested a number of different assumptions, Greenhalgh said.

“The key conclusion,” she added, “is here: ‘The implementation of SDMs as soon as individual states reach a threshold of 8 daily deaths per million could dramatically ameliorate the effects of the disease; achieving near-universal mask use could delay, or in many states, possibly prevent, this threshold from being reached and has the potential to save the most lives while minimizing damage to the economy.’ “

“This is a useful piece of information and I think is borne out by their data,” added Greenhalgh, lead author of an April study on face masks for the public during the pandemic.

You can visit the IHME website for the most current mortality projections.

Caplan, Greenhalgh, and Stutt have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Half of Chinese American parents and their children report having experienced an in-person episode of racial discrimination related to the COVID-19 pandemic, according to results from a survey study.

In the United States, where public officials continue to refer to SARS-CoV-2 as the “China virus” and have often sought to draw attention to its origins in Wuhan, China, “the associations between discrimination triggered by the racialization of this acute public health crisis and mental health are unknown,” Charissa S.L. Cheah, PhD, of the University of Maryland, Baltimore County, and colleagues wrote.

For their research published Oct. 29 in Pediatrics, Dr. Cheah and colleagues recruited a cohort of 543 Chinese American parents of school-age children, and 230 of their children aged 10-18 years, to complete online surveys between mid-March and late May 2020. Parents in the cohort were largely foreign born, with all identifying as ethnically Chinese, while their children were mostly U.S. born.
 

Evidence of discrimination against Chinese Americans

Half of parents and their children (51% of parents and 50% of youth) reported experiencing at least one in-person incident of direct discrimination (assessed using questions derived from a validated scale of racial aggression) related to the pandemic. Dr. Cheah and colleagues also reported a high incidence of direct discrimination online (32% of parents and 46% of youth). Additionally, the researchers measured reports of vicarious or indirect discrimination – such as hearing jokes or disparaging remarks about one’s ethnic group – which they used a different adapted scale to capture. More than three-quarters of the cohort reported such experiences.

The experiences of discrimination likely bore on the mental health of both parents and youth. Using a series of instruments designed to measure overall psychological well-being as well as symptoms of depression, anxiety, and certain emotional and behavioral outcomes, Dr. Cheah and colleagues reported significant negative associations between direct online or in-person discrimination and psychological health. For parents and children alike, anxiety and depressive symptoms were positively associated with all varieties of discrimination experiences measured in the study.

About a fifth of the youth in the study were deemed, based on the symptom scales used in the study, to have an elevated risk of clinically significant mental health problems, higher than the 10%-15% that would be expected for these age groups in the United States.

“This study revealed that a high percentage of Chinese American parents and their children personally experienced or witnessed anti-Chinese or anti–Asian American racial discrimination both online and in person due to the COVID-19 pandemic,” the investigators wrote. “Most respondents reported directly experiencing or witnessing racial discrimination against other Chinese or Asian American individuals due to COVID-19 at least once.”

Dr. Cheah and colleagues noted that their cross-sectional study did not lend itself to causal interpretations and was vulnerable to certain types of reporting bias. Nonetheless, they argued, as the pandemic continues, “pediatricians should be sensitive to the potential mental health needs of Chinese American youth and their parents related to various forms of racism, in addition to other stressors, as the foundations of perceptions of racial-ethnic discrimination and their consequences may be set during this period.”
 

COVID-19 didn’t only bring infection

In an accompanying editorial, Tina L. Cheng, MD, of Johns Hopkins University, Baltimore, and her daughter Alison M. Conca-Cheng, a medical student at Brown University, Providence, R.I., remarked that the study’s findings were consistent with recent research that found “4 in 10 Americans reported that it has become more common since COVID-19 for people to express racist views about Asian Americans,” and also described an increase in complaints of discriminatory experiences by Asian Americans.

In this context, a link to poor mental health “should be no surprise,” Dr. Cheng and Ms. Conca-Cheng argued, and urged pediatricians to consult the American Academy of Pediatrics’ 2019 policy statement on racism and on child and adolescent health. “It calls for us to optimize clinical practice, improve workforce development and professional education, strengthen research, and deploy systems through community engagement, advocacy, and public policy.”

David Rettew, MD, a child and adolescent psychiatrist and associate professor of psychiatry and pediatrics at the University of Vermont, Burlington, called the study’s main points “clear and disturbing.”

“While it is difficult to find much in the way here of a silver lining, these alarming reports have helped people working in health care and mental health to understand racism as another form of trauma and abuse which, like other types, can have real negative effects on health,” Dr. Rettew said in an interview. “The more we as mental health professions ask about racism and offer resources for people who have experienced it, just as we would people who have endured other types of trauma, the more we can help people heal. That said, it would be better just to stop this from happening in the first place.”

Dr. Cheah and colleagues’ study was supported by a National Science Foundation grant. The investigators disclosed no conflicts of interest. Dr. Cheng and Ms. Conca-Cheng disclosed no financial conflicts of interest related to their editorial. Dr. Rettew said he had no relevant financial disclosures.

SOURCE: Cheah CSL et al. Pediatrics. 2020;146(5):e2020021816.

Half of Chinese American parents and their children report having experienced an in-person episode of racial discrimination related to the COVID-19 pandemic, according to results from a survey study.

In the United States, where public officials continue to refer to SARS-CoV-2 as the “China virus” and have often sought to draw attention to its origins in Wuhan, China, “the associations between discrimination triggered by the racialization of this acute public health crisis and mental health are unknown,” Charissa S.L. Cheah, PhD, of the University of Maryland, Baltimore County, and colleagues wrote.

For their research published Oct. 29 in Pediatrics, Dr. Cheah and colleagues recruited a cohort of 543 Chinese American parents of school-age children, and 230 of their children aged 10-18 years, to complete online surveys between mid-March and late May 2020. Parents in the cohort were largely foreign born, with all identifying as ethnically Chinese, while their children were mostly U.S. born.
 

Evidence of discrimination against Chinese Americans

Half of parents and their children (51% of parents and 50% of youth) reported experiencing at least one in-person incident of direct discrimination (assessed using questions derived from a validated scale of racial aggression) related to the pandemic. Dr. Cheah and colleagues also reported a high incidence of direct discrimination online (32% of parents and 46% of youth). Additionally, the researchers measured reports of vicarious or indirect discrimination – such as hearing jokes or disparaging remarks about one’s ethnic group – which they used a different adapted scale to capture. More than three-quarters of the cohort reported such experiences.

The experiences of discrimination likely bore on the mental health of both parents and youth. Using a series of instruments designed to measure overall psychological well-being as well as symptoms of depression, anxiety, and certain emotional and behavioral outcomes, Dr. Cheah and colleagues reported significant negative associations between direct online or in-person discrimination and psychological health. For parents and children alike, anxiety and depressive symptoms were positively associated with all varieties of discrimination experiences measured in the study.

About a fifth of the youth in the study were deemed, based on the symptom scales used in the study, to have an elevated risk of clinically significant mental health problems, higher than the 10%-15% that would be expected for these age groups in the United States.

“This study revealed that a high percentage of Chinese American parents and their children personally experienced or witnessed anti-Chinese or anti–Asian American racial discrimination both online and in person due to the COVID-19 pandemic,” the investigators wrote. “Most respondents reported directly experiencing or witnessing racial discrimination against other Chinese or Asian American individuals due to COVID-19 at least once.”

Dr. Cheah and colleagues noted that their cross-sectional study did not lend itself to causal interpretations and was vulnerable to certain types of reporting bias. Nonetheless, they argued, as the pandemic continues, “pediatricians should be sensitive to the potential mental health needs of Chinese American youth and their parents related to various forms of racism, in addition to other stressors, as the foundations of perceptions of racial-ethnic discrimination and their consequences may be set during this period.”
 

COVID-19 didn’t only bring infection

In an accompanying editorial, Tina L. Cheng, MD, of Johns Hopkins University, Baltimore, and her daughter Alison M. Conca-Cheng, a medical student at Brown University, Providence, R.I., remarked that the study’s findings were consistent with recent research that found “4 in 10 Americans reported that it has become more common since COVID-19 for people to express racist views about Asian Americans,” and also described an increase in complaints of discriminatory experiences by Asian Americans.

In this context, a link to poor mental health “should be no surprise,” Dr. Cheng and Ms. Conca-Cheng argued, and urged pediatricians to consult the American Academy of Pediatrics’ 2019 policy statement on racism and on child and adolescent health. “It calls for us to optimize clinical practice, improve workforce development and professional education, strengthen research, and deploy systems through community engagement, advocacy, and public policy.”

David Rettew, MD, a child and adolescent psychiatrist and associate professor of psychiatry and pediatrics at the University of Vermont, Burlington, called the study’s main points “clear and disturbing.”

“While it is difficult to find much in the way here of a silver lining, these alarming reports have helped people working in health care and mental health to understand racism as another form of trauma and abuse which, like other types, can have real negative effects on health,” Dr. Rettew said in an interview. “The more we as mental health professions ask about racism and offer resources for people who have experienced it, just as we would people who have endured other types of trauma, the more we can help people heal. That said, it would be better just to stop this from happening in the first place.”

Dr. Cheah and colleagues’ study was supported by a National Science Foundation grant. The investigators disclosed no conflicts of interest. Dr. Cheng and Ms. Conca-Cheng disclosed no financial conflicts of interest related to their editorial. Dr. Rettew said he had no relevant financial disclosures.

SOURCE: Cheah CSL et al. Pediatrics. 2020;146(5):e2020021816.

Half of Chinese American parents and their children report having experienced an in-person episode of racial discrimination related to the COVID-19 pandemic, according to results from a survey study.

In the United States, where public officials continue to refer to SARS-CoV-2 as the “China virus” and have often sought to draw attention to its origins in Wuhan, China, “the associations between discrimination triggered by the racialization of this acute public health crisis and mental health are unknown,” Charissa S.L. Cheah, PhD, of the University of Maryland, Baltimore County, and colleagues wrote.

For their research published Oct. 29 in Pediatrics, Dr. Cheah and colleagues recruited a cohort of 543 Chinese American parents of school-age children, and 230 of their children aged 10-18 years, to complete online surveys between mid-March and late May 2020. Parents in the cohort were largely foreign born, with all identifying as ethnically Chinese, while their children were mostly U.S. born.
 

Evidence of discrimination against Chinese Americans

Half of parents and their children (51% of parents and 50% of youth) reported experiencing at least one in-person incident of direct discrimination (assessed using questions derived from a validated scale of racial aggression) related to the pandemic. Dr. Cheah and colleagues also reported a high incidence of direct discrimination online (32% of parents and 46% of youth). Additionally, the researchers measured reports of vicarious or indirect discrimination – such as hearing jokes or disparaging remarks about one’s ethnic group – which they used a different adapted scale to capture. More than three-quarters of the cohort reported such experiences.

The experiences of discrimination likely bore on the mental health of both parents and youth. Using a series of instruments designed to measure overall psychological well-being as well as symptoms of depression, anxiety, and certain emotional and behavioral outcomes, Dr. Cheah and colleagues reported significant negative associations between direct online or in-person discrimination and psychological health. For parents and children alike, anxiety and depressive symptoms were positively associated with all varieties of discrimination experiences measured in the study.

About a fifth of the youth in the study were deemed, based on the symptom scales used in the study, to have an elevated risk of clinically significant mental health problems, higher than the 10%-15% that would be expected for these age groups in the United States.

“This study revealed that a high percentage of Chinese American parents and their children personally experienced or witnessed anti-Chinese or anti–Asian American racial discrimination both online and in person due to the COVID-19 pandemic,” the investigators wrote. “Most respondents reported directly experiencing or witnessing racial discrimination against other Chinese or Asian American individuals due to COVID-19 at least once.”

Dr. Cheah and colleagues noted that their cross-sectional study did not lend itself to causal interpretations and was vulnerable to certain types of reporting bias. Nonetheless, they argued, as the pandemic continues, “pediatricians should be sensitive to the potential mental health needs of Chinese American youth and their parents related to various forms of racism, in addition to other stressors, as the foundations of perceptions of racial-ethnic discrimination and their consequences may be set during this period.”
 

COVID-19 didn’t only bring infection

In an accompanying editorial, Tina L. Cheng, MD, of Johns Hopkins University, Baltimore, and her daughter Alison M. Conca-Cheng, a medical student at Brown University, Providence, R.I., remarked that the study’s findings were consistent with recent research that found “4 in 10 Americans reported that it has become more common since COVID-19 for people to express racist views about Asian Americans,” and also described an increase in complaints of discriminatory experiences by Asian Americans.

In this context, a link to poor mental health “should be no surprise,” Dr. Cheng and Ms. Conca-Cheng argued, and urged pediatricians to consult the American Academy of Pediatrics’ 2019 policy statement on racism and on child and adolescent health. “It calls for us to optimize clinical practice, improve workforce development and professional education, strengthen research, and deploy systems through community engagement, advocacy, and public policy.”

David Rettew, MD, a child and adolescent psychiatrist and associate professor of psychiatry and pediatrics at the University of Vermont, Burlington, called the study’s main points “clear and disturbing.”

“While it is difficult to find much in the way here of a silver lining, these alarming reports have helped people working in health care and mental health to understand racism as another form of trauma and abuse which, like other types, can have real negative effects on health,” Dr. Rettew said in an interview. “The more we as mental health professions ask about racism and offer resources for people who have experienced it, just as we would people who have endured other types of trauma, the more we can help people heal. That said, it would be better just to stop this from happening in the first place.”

Dr. Cheah and colleagues’ study was supported by a National Science Foundation grant. The investigators disclosed no conflicts of interest. Dr. Cheng and Ms. Conca-Cheng disclosed no financial conflicts of interest related to their editorial. Dr. Rettew said he had no relevant financial disclosures.

SOURCE: Cheah CSL et al. Pediatrics. 2020;146(5):e2020021816.

Tocilizumab (Actemra/RoActemra) was not found to have any clear role as a treatment for COVID-19 in four new studies.

Three randomized controlled trials showed that the drug either had no benefit or only a modest one, contradicting a large retrospective study that had hinted at a more robust effect.

“This is not a blockbuster,” said David Cennimo, MD, an infectious disease expert at Rutgers New Jersey Medical School, Newark, New Jersey. “This is not something that’s going to revolutionize our treatment of COVID-19.”

But some researchers still regard these studies as showing evidence that the drug benefits certain patients with severe inflammation.

The immune response to SARS-CoV-2 includes elevated levels of the cytokine interleukin-6 (IL-6). In some patients, this response becomes a nonspecific inflammation, a “cytokine storm,” involving edema and inflammatory cell infiltration in the lungs. These cases are among the most severe.

Dexamethasone has proved effective in controlling this inflammation in some patients. Researchers have theorized that a more targeted suppression of IL-6 could be even more effective or work in cases that don’t respond to dexamethasone.

A recombinant monoclonal antibody, tocilizumab blocks IL-6 receptors. It is approved by the US Food and Drug Administration for use in patients with rheumatologic disorders and cytokine release syndrome induced by chimeric antigen receptor T-cell therapy.

Current National Institutes of Health (NIH) guidelines recommend against the use of tocilizumab as a treatment for COVID-19, despite earlier observational studies that suggested the drug might help patients with moderate to severe disease. Controlled trials were lacking until now.

The most hopeful results in this batch came from the CORIMUNO-19 platform of open-label, randomized controlled trials of immune modulatory treatments for moderate or severe COVID-19 in France.

Published in JAMA Internal Medicine , the trial recruited patients from nine French hospitals. Patients were eligible if they required at least 3 L/min of oxygen without ventilation or admission to the intensive care unit.

The investigators randomly assigned 64 patients to receive tocilizumab 8 mg/kg body weight intravenously plus usual care and 67 patients to usual care alone. Usual care included antibiotic agents, antiviral agents, corticosteroids, vasopressor support, and anticoagulants.

After 4 days, the investigators scored patients on the World Health Organization 10-point Clinical Progression Scale. Twelve of the patients who received tocilizumab scored higher than 5 vs 19 of the patients in the usual care group, with higher scores indicating clinical deterioration.

After 14 days, 24% of the patients taking tocilizumab required either noninvasive ventilation or mechanical ventilation or had died, vs 36% in the usual care group (median posterior hazard ratio [HR], 0.58; 90% credible interval, 0.33 – 1.00).

“We reduced the risk of dying or requiring mechanical ventilation, so for me, the study was positive,” said Olivier Hermine, MD, PhD, a professor of hematology at Paris Descartes University in Paris, France.

However, there was no difference in mortality at 28 days. Hermine hopes to have longer-term outcomes soon, he told Medscape Medical News.

A second randomized controlled trial, also published in JAMA Internal Medicine , provided less hope. In this RCT-TCZ-COVID-19 Study Group trial, conducted at 24 Italian centers, patients were enrolled if their partial pressure of arterial oxygen to fraction of inspired oxygen (PaO₂/FiO₂) ratios were between 200 and 300 mm Hg and if their inflammatory phenotypes were defined by fever and elevated C-reactive protein level.

The investigators randomly assigned 60 patients to receive tocilizumab 8 mg/kg up to a maximum of 800 mg within 8 hours of randomization, followed by a second dose after 12 hours. They assigned 66 patients to a control group that received supportive care until clinical worsening, at which point patients could receive tocilizumab as a rescue therapy.

Of the patients who received tocilizumab, 28.3% showed clinical worsening within 14 days, compared to 27.0% in the control group (rate ratio, 1.05; 95% CI, 0.59 – 1.86). There was no significant difference between the groups in terms of the proportion admitted to intensive care. The researchers stopped the trial prematurely because tocilizumab did not seem to be making a difference.

The BACC Bay Tocilizumab Trial was conducted at seven Boston hospitals. The results, which were published in The New England Journal of Medicine, were also discouraging.

In that trial, enrolled patients met two sets of parameters. First, the patients had at least one of the following signs: C-reactive protein level higher than 50 mg/L, ferritin level higher than 500 ng/mL, D-dimer level higher than 1000 ng/mL, or a lactate dehydrogenase level higher than 250 U/L. Second, the patients had to have at least two of the following signs: body temperature >38° C, pulmonary infiltrates, or the need for supplemental oxygen to maintain an oxygen saturation greater than 92%.

The investigators randomly assigned 161 patients to receive intravenous tocilizumab 8 mg/kg up to 800 mg and 81 to receive a placebo.

They didn’t find a statistically significant difference between the groups. The hazard ratio for intubation or death in the tocilizumab group as compared with the placebo group was 0.83 (95% CI, 0.38 – 1.81; P = .64). The hazard ratio for disease worsening was 1.11 (95% CI, 0.59 – 2.10; P = .73). At 14 days, the conditions of 18.0% of the patients who received tocilizumab and 14.9% of the patients who received the placebo worsened.

In contrast to these randomized trials, STOP-COVID, a retrospective analysis of 3924 patients, also published in JAMA Internal Medicine, found that the risk for death was lower for patients treated with tocilizumab compared with those not treated with tocilizumab (HR, 0.71; 95% CI, 0.56 – 0.92) over a median follow-up period of 27 days.

Also on the bright side, none of the new studies showed significant adverse reactions to tocilizumab.

More randomized clinical trials are underway. In press releases announcing topline data, Roche reported mostly negative results in its phase 3 COVACTA trial but noted a 44% reduction in the risk for progression to death or ventilation in its phase 3 IMPACTA trial. Roche did not comment on the ethnicity of its COVACTA patients; it said IMPACTA enrolled a majority of Hispanic patients and included large representations of Native American and Black patients.
 

Results don’t support routine use

Commenting on the new studies, editorialists in both JAMA Internal Medicine and The New England Journal of Medicine concluded that the tocilizumab results were not strong enough to support routine use.

“My take-home point from looking at all of these together is that, even if it does help, it’s most likely in a small subset of the population and/or a small effect,” Cennimo told Medscape Medical News.

But the NIH recommendation against tocilizumab goes too far, argued Cristina Mussini, MD, a professor of infectious diseases at the University of Modena and Reggio Emilia in Italy, who is a coauthor of a cohort study of tocilizumab and served on the CORIMUNO-19 Data Safety and Monitoring Board.

“I really think it’s too early to recommend against it because at least two clinical trials showed protection against mechanical ventilation and death,” she said.

She prescribes tocilizumab for patients who have not been helped by dexamethasone. “It’s just a rescue drug,” she told Medscape Medical News. “It’s not something you use for everybody, but it’s the only weapon we have now when the patient is really going to the intensive care unit.”

The BACC Bay Tocilizumab Trial was funded by Genentech/Roche. Genentech/Roche provided the drug for the CORIMUNO and RCT-TCZ-COVID-19 trials. The STOP-COVID study was supported by grants from the NIH and by the Frankel Cardiovascular Center COVID-19: Impact Research Ignitor. Cennimo, Hermine, and Mussini have disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

Tocilizumab (Actemra/RoActemra) was not found to have any clear role as a treatment for COVID-19 in four new studies.

Three randomized controlled trials showed that the drug either had no benefit or only a modest one, contradicting a large retrospective study that had hinted at a more robust effect.

“This is not a blockbuster,” said David Cennimo, MD, an infectious disease expert at Rutgers New Jersey Medical School, Newark, New Jersey. “This is not something that’s going to revolutionize our treatment of COVID-19.”

But some researchers still regard these studies as showing evidence that the drug benefits certain patients with severe inflammation.

The immune response to SARS-CoV-2 includes elevated levels of the cytokine interleukin-6 (IL-6). In some patients, this response becomes a nonspecific inflammation, a “cytokine storm,” involving edema and inflammatory cell infiltration in the lungs. These cases are among the most severe.

Dexamethasone has proved effective in controlling this inflammation in some patients. Researchers have theorized that a more targeted suppression of IL-6 could be even more effective or work in cases that don’t respond to dexamethasone.

A recombinant monoclonal antibody, tocilizumab blocks IL-6 receptors. It is approved by the US Food and Drug Administration for use in patients with rheumatologic disorders and cytokine release syndrome induced by chimeric antigen receptor T-cell therapy.

Current National Institutes of Health (NIH) guidelines recommend against the use of tocilizumab as a treatment for COVID-19, despite earlier observational studies that suggested the drug might help patients with moderate to severe disease. Controlled trials were lacking until now.

The most hopeful results in this batch came from the CORIMUNO-19 platform of open-label, randomized controlled trials of immune modulatory treatments for moderate or severe COVID-19 in France.

Published in JAMA Internal Medicine , the trial recruited patients from nine French hospitals. Patients were eligible if they required at least 3 L/min of oxygen without ventilation or admission to the intensive care unit.

The investigators randomly assigned 64 patients to receive tocilizumab 8 mg/kg body weight intravenously plus usual care and 67 patients to usual care alone. Usual care included antibiotic agents, antiviral agents, corticosteroids, vasopressor support, and anticoagulants.

After 4 days, the investigators scored patients on the World Health Organization 10-point Clinical Progression Scale. Twelve of the patients who received tocilizumab scored higher than 5 vs 19 of the patients in the usual care group, with higher scores indicating clinical deterioration.

After 14 days, 24% of the patients taking tocilizumab required either noninvasive ventilation or mechanical ventilation or had died, vs 36% in the usual care group (median posterior hazard ratio [HR], 0.58; 90% credible interval, 0.33 – 1.00).

“We reduced the risk of dying or requiring mechanical ventilation, so for me, the study was positive,” said Olivier Hermine, MD, PhD, a professor of hematology at Paris Descartes University in Paris, France.

However, there was no difference in mortality at 28 days. Hermine hopes to have longer-term outcomes soon, he told Medscape Medical News.

A second randomized controlled trial, also published in JAMA Internal Medicine , provided less hope. In this RCT-TCZ-COVID-19 Study Group trial, conducted at 24 Italian centers, patients were enrolled if their partial pressure of arterial oxygen to fraction of inspired oxygen (PaO₂/FiO₂) ratios were between 200 and 300 mm Hg and if their inflammatory phenotypes were defined by fever and elevated C-reactive protein level.

The investigators randomly assigned 60 patients to receive tocilizumab 8 mg/kg up to a maximum of 800 mg within 8 hours of randomization, followed by a second dose after 12 hours. They assigned 66 patients to a control group that received supportive care until clinical worsening, at which point patients could receive tocilizumab as a rescue therapy.

Of the patients who received tocilizumab, 28.3% showed clinical worsening within 14 days, compared to 27.0% in the control group (rate ratio, 1.05; 95% CI, 0.59 – 1.86). There was no significant difference between the groups in terms of the proportion admitted to intensive care. The researchers stopped the trial prematurely because tocilizumab did not seem to be making a difference.

The BACC Bay Tocilizumab Trial was conducted at seven Boston hospitals. The results, which were published in The New England Journal of Medicine, were also discouraging.

In that trial, enrolled patients met two sets of parameters. First, the patients had at least one of the following signs: C-reactive protein level higher than 50 mg/L, ferritin level higher than 500 ng/mL, D-dimer level higher than 1000 ng/mL, or a lactate dehydrogenase level higher than 250 U/L. Second, the patients had to have at least two of the following signs: body temperature >38° C, pulmonary infiltrates, or the need for supplemental oxygen to maintain an oxygen saturation greater than 92%.

The investigators randomly assigned 161 patients to receive intravenous tocilizumab 8 mg/kg up to 800 mg and 81 to receive a placebo.

They didn’t find a statistically significant difference between the groups. The hazard ratio for intubation or death in the tocilizumab group as compared with the placebo group was 0.83 (95% CI, 0.38 – 1.81; P = .64). The hazard ratio for disease worsening was 1.11 (95% CI, 0.59 – 2.10; P = .73). At 14 days, the conditions of 18.0% of the patients who received tocilizumab and 14.9% of the patients who received the placebo worsened.

In contrast to these randomized trials, STOP-COVID, a retrospective analysis of 3924 patients, also published in JAMA Internal Medicine, found that the risk for death was lower for patients treated with tocilizumab compared with those not treated with tocilizumab (HR, 0.71; 95% CI, 0.56 – 0.92) over a median follow-up period of 27 days.

Also on the bright side, none of the new studies showed significant adverse reactions to tocilizumab.

More randomized clinical trials are underway. In press releases announcing topline data, Roche reported mostly negative results in its phase 3 COVACTA trial but noted a 44% reduction in the risk for progression to death or ventilation in its phase 3 IMPACTA trial. Roche did not comment on the ethnicity of its COVACTA patients; it said IMPACTA enrolled a majority of Hispanic patients and included large representations of Native American and Black patients.
 

Results don’t support routine use

Commenting on the new studies, editorialists in both JAMA Internal Medicine and The New England Journal of Medicine concluded that the tocilizumab results were not strong enough to support routine use.

“My take-home point from looking at all of these together is that, even if it does help, it’s most likely in a small subset of the population and/or a small effect,” Cennimo told Medscape Medical News.

But the NIH recommendation against tocilizumab goes too far, argued Cristina Mussini, MD, a professor of infectious diseases at the University of Modena and Reggio Emilia in Italy, who is a coauthor of a cohort study of tocilizumab and served on the CORIMUNO-19 Data Safety and Monitoring Board.

“I really think it’s too early to recommend against it because at least two clinical trials showed protection against mechanical ventilation and death,” she said.

She prescribes tocilizumab for patients who have not been helped by dexamethasone. “It’s just a rescue drug,” she told Medscape Medical News. “It’s not something you use for everybody, but it’s the only weapon we have now when the patient is really going to the intensive care unit.”

The BACC Bay Tocilizumab Trial was funded by Genentech/Roche. Genentech/Roche provided the drug for the CORIMUNO and RCT-TCZ-COVID-19 trials. The STOP-COVID study was supported by grants from the NIH and by the Frankel Cardiovascular Center COVID-19: Impact Research Ignitor. Cennimo, Hermine, and Mussini have disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

Tocilizumab (Actemra/RoActemra) was not found to have any clear role as a treatment for COVID-19 in four new studies.

Three randomized controlled trials showed that the drug either had no benefit or only a modest one, contradicting a large retrospective study that had hinted at a more robust effect.

“This is not a blockbuster,” said David Cennimo, MD, an infectious disease expert at Rutgers New Jersey Medical School, Newark, New Jersey. “This is not something that’s going to revolutionize our treatment of COVID-19.”

But some researchers still regard these studies as showing evidence that the drug benefits certain patients with severe inflammation.

The immune response to SARS-CoV-2 includes elevated levels of the cytokine interleukin-6 (IL-6). In some patients, this response becomes a nonspecific inflammation, a “cytokine storm,” involving edema and inflammatory cell infiltration in the lungs. These cases are among the most severe.

Dexamethasone has proved effective in controlling this inflammation in some patients. Researchers have theorized that a more targeted suppression of IL-6 could be even more effective or work in cases that don’t respond to dexamethasone.

A recombinant monoclonal antibody, tocilizumab blocks IL-6 receptors. It is approved by the US Food and Drug Administration for use in patients with rheumatologic disorders and cytokine release syndrome induced by chimeric antigen receptor T-cell therapy.

Current National Institutes of Health (NIH) guidelines recommend against the use of tocilizumab as a treatment for COVID-19, despite earlier observational studies that suggested the drug might help patients with moderate to severe disease. Controlled trials were lacking until now.

The most hopeful results in this batch came from the CORIMUNO-19 platform of open-label, randomized controlled trials of immune modulatory treatments for moderate or severe COVID-19 in France.

Published in JAMA Internal Medicine , the trial recruited patients from nine French hospitals. Patients were eligible if they required at least 3 L/min of oxygen without ventilation or admission to the intensive care unit.

The investigators randomly assigned 64 patients to receive tocilizumab 8 mg/kg body weight intravenously plus usual care and 67 patients to usual care alone. Usual care included antibiotic agents, antiviral agents, corticosteroids, vasopressor support, and anticoagulants.

After 4 days, the investigators scored patients on the World Health Organization 10-point Clinical Progression Scale. Twelve of the patients who received tocilizumab scored higher than 5 vs 19 of the patients in the usual care group, with higher scores indicating clinical deterioration.

After 14 days, 24% of the patients taking tocilizumab required either noninvasive ventilation or mechanical ventilation or had died, vs 36% in the usual care group (median posterior hazard ratio [HR], 0.58; 90% credible interval, 0.33 – 1.00).

“We reduced the risk of dying or requiring mechanical ventilation, so for me, the study was positive,” said Olivier Hermine, MD, PhD, a professor of hematology at Paris Descartes University in Paris, France.

However, there was no difference in mortality at 28 days. Hermine hopes to have longer-term outcomes soon, he told Medscape Medical News.

A second randomized controlled trial, also published in JAMA Internal Medicine , provided less hope. In this RCT-TCZ-COVID-19 Study Group trial, conducted at 24 Italian centers, patients were enrolled if their partial pressure of arterial oxygen to fraction of inspired oxygen (PaO₂/FiO₂) ratios were between 200 and 300 mm Hg and if their inflammatory phenotypes were defined by fever and elevated C-reactive protein level.

The investigators randomly assigned 60 patients to receive tocilizumab 8 mg/kg up to a maximum of 800 mg within 8 hours of randomization, followed by a second dose after 12 hours. They assigned 66 patients to a control group that received supportive care until clinical worsening, at which point patients could receive tocilizumab as a rescue therapy.

Of the patients who received tocilizumab, 28.3% showed clinical worsening within 14 days, compared to 27.0% in the control group (rate ratio, 1.05; 95% CI, 0.59 – 1.86). There was no significant difference between the groups in terms of the proportion admitted to intensive care. The researchers stopped the trial prematurely because tocilizumab did not seem to be making a difference.

The BACC Bay Tocilizumab Trial was conducted at seven Boston hospitals. The results, which were published in The New England Journal of Medicine, were also discouraging.

In that trial, enrolled patients met two sets of parameters. First, the patients had at least one of the following signs: C-reactive protein level higher than 50 mg/L, ferritin level higher than 500 ng/mL, D-dimer level higher than 1000 ng/mL, or a lactate dehydrogenase level higher than 250 U/L. Second, the patients had to have at least two of the following signs: body temperature >38° C, pulmonary infiltrates, or the need for supplemental oxygen to maintain an oxygen saturation greater than 92%.

The investigators randomly assigned 161 patients to receive intravenous tocilizumab 8 mg/kg up to 800 mg and 81 to receive a placebo.

They didn’t find a statistically significant difference between the groups. The hazard ratio for intubation or death in the tocilizumab group as compared with the placebo group was 0.83 (95% CI, 0.38 – 1.81; P = .64). The hazard ratio for disease worsening was 1.11 (95% CI, 0.59 – 2.10; P = .73). At 14 days, the conditions of 18.0% of the patients who received tocilizumab and 14.9% of the patients who received the placebo worsened.

In contrast to these randomized trials, STOP-COVID, a retrospective analysis of 3924 patients, also published in JAMA Internal Medicine, found that the risk for death was lower for patients treated with tocilizumab compared with those not treated with tocilizumab (HR, 0.71; 95% CI, 0.56 – 0.92) over a median follow-up period of 27 days.

Also on the bright side, none of the new studies showed significant adverse reactions to tocilizumab.

More randomized clinical trials are underway. In press releases announcing topline data, Roche reported mostly negative results in its phase 3 COVACTA trial but noted a 44% reduction in the risk for progression to death or ventilation in its phase 3 IMPACTA trial. Roche did not comment on the ethnicity of its COVACTA patients; it said IMPACTA enrolled a majority of Hispanic patients and included large representations of Native American and Black patients.
 

Results don’t support routine use

Commenting on the new studies, editorialists in both JAMA Internal Medicine and The New England Journal of Medicine concluded that the tocilizumab results were not strong enough to support routine use.

“My take-home point from looking at all of these together is that, even if it does help, it’s most likely in a small subset of the population and/or a small effect,” Cennimo told Medscape Medical News.

But the NIH recommendation against tocilizumab goes too far, argued Cristina Mussini, MD, a professor of infectious diseases at the University of Modena and Reggio Emilia in Italy, who is a coauthor of a cohort study of tocilizumab and served on the CORIMUNO-19 Data Safety and Monitoring Board.

“I really think it’s too early to recommend against it because at least two clinical trials showed protection against mechanical ventilation and death,” she said.

She prescribes tocilizumab for patients who have not been helped by dexamethasone. “It’s just a rescue drug,” she told Medscape Medical News. “It’s not something you use for everybody, but it’s the only weapon we have now when the patient is really going to the intensive care unit.”

The BACC Bay Tocilizumab Trial was funded by Genentech/Roche. Genentech/Roche provided the drug for the CORIMUNO and RCT-TCZ-COVID-19 trials. The STOP-COVID study was supported by grants from the NIH and by the Frankel Cardiovascular Center COVID-19: Impact Research Ignitor. Cennimo, Hermine, and Mussini have disclosed no relevant financial relationships.
 

This article first appeared on Medscape.com.

Eli Lilly announced it will halt its ACTIV-3 trial evaluating the antibody bamlanivimab in combination with remdesivir for people hospitalized with COVID-19, after new evidence regarding efficacy emerged.

The new data from the National Institutes of Health suggest that the experimental neutralizing antibody therapy does not offer significant clinical benefit for people with more advanced COVID-19 illness, according to a company statement.

Eli Lilly also announced it plans to continue its other trials evaluating the antibody, including those assessing a potential role in treating people in the earlier stages of COVID-19.

“While there was insufficient evidence that bamlanivimab improved clinical outcomes when added to other treatments in hospitalized patients with COVID-19, we remain confident based on data from Lilly’s BLAZE-1 study that bamlanivimab monotherapy may prevent progression of disease for those earlier in the course of COVID-19,” the statement reads.

The ACTIV-3 trial was paused on October 13 after a data and safety monitoring board cited safety concerns.

The most recent data update that triggered an end to the trial did not reveal any significant differences in safety, though.  
 

This article first appeared on Medscape.com.

Eli Lilly announced it will halt its ACTIV-3 trial evaluating the antibody bamlanivimab in combination with remdesivir for people hospitalized with COVID-19, after new evidence regarding efficacy emerged.

The new data from the National Institutes of Health suggest that the experimental neutralizing antibody therapy does not offer significant clinical benefit for people with more advanced COVID-19 illness, according to a company statement.

Eli Lilly also announced it plans to continue its other trials evaluating the antibody, including those assessing a potential role in treating people in the earlier stages of COVID-19.

“While there was insufficient evidence that bamlanivimab improved clinical outcomes when added to other treatments in hospitalized patients with COVID-19, we remain confident based on data from Lilly’s BLAZE-1 study that bamlanivimab monotherapy may prevent progression of disease for those earlier in the course of COVID-19,” the statement reads.

The ACTIV-3 trial was paused on October 13 after a data and safety monitoring board cited safety concerns.

The most recent data update that triggered an end to the trial did not reveal any significant differences in safety, though.  
 

This article first appeared on Medscape.com.

Eli Lilly announced it will halt its ACTIV-3 trial evaluating the antibody bamlanivimab in combination with remdesivir for people hospitalized with COVID-19, after new evidence regarding efficacy emerged.

The new data from the National Institutes of Health suggest that the experimental neutralizing antibody therapy does not offer significant clinical benefit for people with more advanced COVID-19 illness, according to a company statement.

Eli Lilly also announced it plans to continue its other trials evaluating the antibody, including those assessing a potential role in treating people in the earlier stages of COVID-19.

“While there was insufficient evidence that bamlanivimab improved clinical outcomes when added to other treatments in hospitalized patients with COVID-19, we remain confident based on data from Lilly’s BLAZE-1 study that bamlanivimab monotherapy may prevent progression of disease for those earlier in the course of COVID-19,” the statement reads.

The ACTIV-3 trial was paused on October 13 after a data and safety monitoring board cited safety concerns.

The most recent data update that triggered an end to the trial did not reveal any significant differences in safety, though.  
 

This article first appeared on Medscape.com.

A mutation of the ODC1 gene, which plays a key role in polyamine metabolism, has been implicated in a syndromic neurodevelopmental disorder first described in 2018 and linked to a number of dysmorphic features and brain abnormalities, but it may be treated with diet modifications and available therapies, according to the researcher whose group first identified the disorder.

Lance Rodan, MD, of Boston Children’s Hospital and Harvard Medical School, reported on research into ODC1 gain-of-function disorder –named for ornithine decarboxylase 1, the rate-limiting enzyme involved in polyamine synthesis – in the Linda De Meirleir Neurometabolic award lecture at the 2020 CNS-ICNA Conjoint Meeting, held virtually this year. Dr. Rodan and colleagues first described ODC1 disorder in a multicenter case series.

Dr. Rodan noted that dysregulated polyamine levels are associated with cancer, and that ODC1 is expressed “ubiquitously” throughout the body.
 

Pathophysiology and phenotypes

In an interview, he described the metabolic process more fully. “GI flora can produce putrescine, which is the polyamine that accumulates in excess in the ODC1 gain-of-function disorder. It is yet to be elucidated if decreasing putrescine production by GI flora and/or reducing dietary sources of putrescine may play a role in the management of this disorder.” 

In the De Meirleir lecture, Dr. Rodan described four patients from his group’s published case series, all found to have heterozygous de novo variants in the ODC1 gene, along with a fifth patient reported by Caleb Bupp, MD, and colleagues at Michigan State University, East Lansing.

“There’s a recognizable phenotype to this disorder,” Dr. Rodan said. “These individuals have neurodevelopment abnormalities. They may have behavioral concerns. They have low-tone central hypertonia and macrocephaly.”

One of the most distinctive characteristics of ODC1 disorder is alopecia, he said, “which in almost everybody with this condition involves the eyebrows and eyelashes and in some individuals also involves the scalp hair.”

These patients also have what Dr. Rodan called “a common yet subtle facial gestalt.” That can include hypertelorism, spareness of the eyebrows and eyelashes, and a tubular- shaped nose with a short columella and a short philtrum.

They may also have abnormalities of the nails and cryptorchidism, and typically a prenatal history of polyhydramnios, he said.

MRI findings include prominent perivascular spaces, periventricular cysts, abnormal white matter and corpus callosum abnormalities, he said, adding that the fetal case MRI demonstrated subepidermal cysts, white matter cysts in the temporal pole, deficiency of the falx cerebri and abnormal white-matter signals.

Biochemical features of ODC1 disorder include increased N-acetylputrescine levels with normal spermine and spermidine levels, Dr. Rodan said. He also noted that Dr. Bupp’s group reported increased putrescine in fibroblasts and increased ODC1 protein levels in red blood cells.

Dr. Rodan also described possible molecular mechanisms in ODC1 disorder. One was the location of the ODC1 variants: all were reported closely located to truncating variants in the final exon of the ODC1 gene. This allows truncating proteins to survive, adding to the degradation that results in a net gain-of-function of ODC1 enzyme activity.

With regard to pathophysiology of ODC1 disorder, Dr. Rodan noted that research has implicated chronically elevated putrescine levels in the alopecia, a finding animal models support. “Since putrescine is a precursor for gamma-aminobutyric acid, it’s possible perturbed GABA levels may also be involved,” he said. Abnormal modulation N-methyl-D-aspirate receptors may also be involved, he said.

Another hypothesis purports that potential of elevated levels of toxic aldehydes/H₂O₂ similar to Snyder-Robinson syndrome, the better known polyamine-related neurometabolic disorder. “Along those lines, maybe there’s also a secondary mitochondrial or lysosomal dysfunction, but this is something that’s still being actively studied,” Dr. Rodan said.
 

Treatment

Because ODC1 disorder was only first described 2 years ago, research into treatment is nascent. “In terms of management, I think one of the more fundamental questions is whether this is more of a static developmental disorder or whether this actually represents a progressive degenerative disorder,” Dr. Rodan said.

One potential treatment that has been explored, he said, is difluoromethylornithine, a synthetic ODC1 inhibitor already Food and Drug Administration approved for African sleeping sickness and as a topical treatment for hirsutism. It is also the subject of ongoing clinical trials in colon cancer and neuroblastoma. Potential side effects include myelosuppression, seizures and hearing loss.

Dr. Rodan noted that a single-center study reported that difluoromethylornithine in a 3-year-old patient with ODC1 disorder reduced ODC protein activity and putrescine to control levels.

Other potential treatments include the natural ODC1 inhibitors agmatine and turmeric/curcumin, flagyl/rifaximin to decrease putrescine production in the gut, a low-dairy diet to lower putrescine levels, and antioxidants. “There could be a role for antioxidant stress similar to what is seen in Snyder-Robinson syndrome,” Dr. Rodan said.

Based on mouse studies, patients with ODC1 may be at risk of skin cancer, so regular skin checks along with sun protection should be part of management, he said. “This also raises the question of whether there should be surveillance for other types of cancer given the role of polyamine in various types of tumors.”

Dr. Rodan has no relevant financial relationships to disclose.

A mutation of the ODC1 gene, which plays a key role in polyamine metabolism, has been implicated in a syndromic neurodevelopmental disorder first described in 2018 and linked to a number of dysmorphic features and brain abnormalities, but it may be treated with diet modifications and available therapies, according to the researcher whose group first identified the disorder.

Lance Rodan, MD, of Boston Children’s Hospital and Harvard Medical School, reported on research into ODC1 gain-of-function disorder –named for ornithine decarboxylase 1, the rate-limiting enzyme involved in polyamine synthesis – in the Linda De Meirleir Neurometabolic award lecture at the 2020 CNS-ICNA Conjoint Meeting, held virtually this year. Dr. Rodan and colleagues first described ODC1 disorder in a multicenter case series.

Dr. Rodan noted that dysregulated polyamine levels are associated with cancer, and that ODC1 is expressed “ubiquitously” throughout the body.
 

Pathophysiology and phenotypes

In an interview, he described the metabolic process more fully. “GI flora can produce putrescine, which is the polyamine that accumulates in excess in the ODC1 gain-of-function disorder. It is yet to be elucidated if decreasing putrescine production by GI flora and/or reducing dietary sources of putrescine may play a role in the management of this disorder.” 

In the De Meirleir lecture, Dr. Rodan described four patients from his group’s published case series, all found to have heterozygous de novo variants in the ODC1 gene, along with a fifth patient reported by Caleb Bupp, MD, and colleagues at Michigan State University, East Lansing.

“There’s a recognizable phenotype to this disorder,” Dr. Rodan said. “These individuals have neurodevelopment abnormalities. They may have behavioral concerns. They have low-tone central hypertonia and macrocephaly.”

One of the most distinctive characteristics of ODC1 disorder is alopecia, he said, “which in almost everybody with this condition involves the eyebrows and eyelashes and in some individuals also involves the scalp hair.”

These patients also have what Dr. Rodan called “a common yet subtle facial gestalt.” That can include hypertelorism, spareness of the eyebrows and eyelashes, and a tubular- shaped nose with a short columella and a short philtrum.

They may also have abnormalities of the nails and cryptorchidism, and typically a prenatal history of polyhydramnios, he said.

MRI findings include prominent perivascular spaces, periventricular cysts, abnormal white matter and corpus callosum abnormalities, he said, adding that the fetal case MRI demonstrated subepidermal cysts, white matter cysts in the temporal pole, deficiency of the falx cerebri and abnormal white-matter signals.

Biochemical features of ODC1 disorder include increased N-acetylputrescine levels with normal spermine and spermidine levels, Dr. Rodan said. He also noted that Dr. Bupp’s group reported increased putrescine in fibroblasts and increased ODC1 protein levels in red blood cells.

Dr. Rodan also described possible molecular mechanisms in ODC1 disorder. One was the location of the ODC1 variants: all were reported closely located to truncating variants in the final exon of the ODC1 gene. This allows truncating proteins to survive, adding to the degradation that results in a net gain-of-function of ODC1 enzyme activity.

With regard to pathophysiology of ODC1 disorder, Dr. Rodan noted that research has implicated chronically elevated putrescine levels in the alopecia, a finding animal models support. “Since putrescine is a precursor for gamma-aminobutyric acid, it’s possible perturbed GABA levels may also be involved,” he said. Abnormal modulation N-methyl-D-aspirate receptors may also be involved, he said.

Another hypothesis purports that potential of elevated levels of toxic aldehydes/H₂O₂ similar to Snyder-Robinson syndrome, the better known polyamine-related neurometabolic disorder. “Along those lines, maybe there’s also a secondary mitochondrial or lysosomal dysfunction, but this is something that’s still being actively studied,” Dr. Rodan said.
 

Treatment

Because ODC1 disorder was only first described 2 years ago, research into treatment is nascent. “In terms of management, I think one of the more fundamental questions is whether this is more of a static developmental disorder or whether this actually represents a progressive degenerative disorder,” Dr. Rodan said.

One potential treatment that has been explored, he said, is difluoromethylornithine, a synthetic ODC1 inhibitor already Food and Drug Administration approved for African sleeping sickness and as a topical treatment for hirsutism. It is also the subject of ongoing clinical trials in colon cancer and neuroblastoma. Potential side effects include myelosuppression, seizures and hearing loss.

Dr. Rodan noted that a single-center study reported that difluoromethylornithine in a 3-year-old patient with ODC1 disorder reduced ODC protein activity and putrescine to control levels.

Other potential treatments include the natural ODC1 inhibitors agmatine and turmeric/curcumin, flagyl/rifaximin to decrease putrescine production in the gut, a low-dairy diet to lower putrescine levels, and antioxidants. “There could be a role for antioxidant stress similar to what is seen in Snyder-Robinson syndrome,” Dr. Rodan said.

Based on mouse studies, patients with ODC1 may be at risk of skin cancer, so regular skin checks along with sun protection should be part of management, he said. “This also raises the question of whether there should be surveillance for other types of cancer given the role of polyamine in various types of tumors.”

Dr. Rodan has no relevant financial relationships to disclose.

A mutation of the ODC1 gene, which plays a key role in polyamine metabolism, has been implicated in a syndromic neurodevelopmental disorder first described in 2018 and linked to a number of dysmorphic features and brain abnormalities, but it may be treated with diet modifications and available therapies, according to the researcher whose group first identified the disorder.

Lance Rodan, MD, of Boston Children’s Hospital and Harvard Medical School, reported on research into ODC1 gain-of-function disorder –named for ornithine decarboxylase 1, the rate-limiting enzyme involved in polyamine synthesis – in the Linda De Meirleir Neurometabolic award lecture at the 2020 CNS-ICNA Conjoint Meeting, held virtually this year. Dr. Rodan and colleagues first described ODC1 disorder in a multicenter case series.

Dr. Rodan noted that dysregulated polyamine levels are associated with cancer, and that ODC1 is expressed “ubiquitously” throughout the body.
 

Pathophysiology and phenotypes

In an interview, he described the metabolic process more fully. “GI flora can produce putrescine, which is the polyamine that accumulates in excess in the ODC1 gain-of-function disorder. It is yet to be elucidated if decreasing putrescine production by GI flora and/or reducing dietary sources of putrescine may play a role in the management of this disorder.” 

In the De Meirleir lecture, Dr. Rodan described four patients from his group’s published case series, all found to have heterozygous de novo variants in the ODC1 gene, along with a fifth patient reported by Caleb Bupp, MD, and colleagues at Michigan State University, East Lansing.

“There’s a recognizable phenotype to this disorder,” Dr. Rodan said. “These individuals have neurodevelopment abnormalities. They may have behavioral concerns. They have low-tone central hypertonia and macrocephaly.”

One of the most distinctive characteristics of ODC1 disorder is alopecia, he said, “which in almost everybody with this condition involves the eyebrows and eyelashes and in some individuals also involves the scalp hair.”

These patients also have what Dr. Rodan called “a common yet subtle facial gestalt.” That can include hypertelorism, spareness of the eyebrows and eyelashes, and a tubular- shaped nose with a short columella and a short philtrum.

They may also have abnormalities of the nails and cryptorchidism, and typically a prenatal history of polyhydramnios, he said.

MRI findings include prominent perivascular spaces, periventricular cysts, abnormal white matter and corpus callosum abnormalities, he said, adding that the fetal case MRI demonstrated subepidermal cysts, white matter cysts in the temporal pole, deficiency of the falx cerebri and abnormal white-matter signals.

Biochemical features of ODC1 disorder include increased N-acetylputrescine levels with normal spermine and spermidine levels, Dr. Rodan said. He also noted that Dr. Bupp’s group reported increased putrescine in fibroblasts and increased ODC1 protein levels in red blood cells.

Dr. Rodan also described possible molecular mechanisms in ODC1 disorder. One was the location of the ODC1 variants: all were reported closely located to truncating variants in the final exon of the ODC1 gene. This allows truncating proteins to survive, adding to the degradation that results in a net gain-of-function of ODC1 enzyme activity.

With regard to pathophysiology of ODC1 disorder, Dr. Rodan noted that research has implicated chronically elevated putrescine levels in the alopecia, a finding animal models support. “Since putrescine is a precursor for gamma-aminobutyric acid, it’s possible perturbed GABA levels may also be involved,” he said. Abnormal modulation N-methyl-D-aspirate receptors may also be involved, he said.

Another hypothesis purports that potential of elevated levels of toxic aldehydes/H₂O₂ similar to Snyder-Robinson syndrome, the better known polyamine-related neurometabolic disorder. “Along those lines, maybe there’s also a secondary mitochondrial or lysosomal dysfunction, but this is something that’s still being actively studied,” Dr. Rodan said.
 

Treatment

Because ODC1 disorder was only first described 2 years ago, research into treatment is nascent. “In terms of management, I think one of the more fundamental questions is whether this is more of a static developmental disorder or whether this actually represents a progressive degenerative disorder,” Dr. Rodan said.

One potential treatment that has been explored, he said, is difluoromethylornithine, a synthetic ODC1 inhibitor already Food and Drug Administration approved for African sleeping sickness and as a topical treatment for hirsutism. It is also the subject of ongoing clinical trials in colon cancer and neuroblastoma. Potential side effects include myelosuppression, seizures and hearing loss.

Dr. Rodan noted that a single-center study reported that difluoromethylornithine in a 3-year-old patient with ODC1 disorder reduced ODC protein activity and putrescine to control levels.

Other potential treatments include the natural ODC1 inhibitors agmatine and turmeric/curcumin, flagyl/rifaximin to decrease putrescine production in the gut, a low-dairy diet to lower putrescine levels, and antioxidants. “There could be a role for antioxidant stress similar to what is seen in Snyder-Robinson syndrome,” Dr. Rodan said.

Based on mouse studies, patients with ODC1 may be at risk of skin cancer, so regular skin checks along with sun protection should be part of management, he said. “This also raises the question of whether there should be surveillance for other types of cancer given the role of polyamine in various types of tumors.”

Dr. Rodan has no relevant financial relationships to disclose.

Clinicians have numerous pharmacotherapy options available to treat ADHD in their toolbox. How do you know which formulation or combination of therapies is right for your patient with ADHD?

According to Jeffrey R. Strawn, MD, the answer depends on onset and duration of the medication and how that fits in to the patient’s current needs.

The most common treatment for ADHD, stimulants, are amphetamine-based and methylphenidate-based compounds known for improving core symptoms of inattention, impulsivity, and hyperactivity and are “probably associated with the most efficacy relative to the other interventions,” Dr. Strawn, associate professor of psychiatry, pediatrics, and clinical pharmacology at Cincinnati Children’s Hospital Medical Center, said at Psychopharmacology Update presented by Current Psychiatry and Global Academy for Medical Education. “But what I think is also really important for us to remember as clinicians is that they improve adherence, social interactions, [and] academic efficiency as well as accuracy.”

Other ADHD pharmacotherapy options include nonstimulant norepinephrine reuptake inhibitors (NRIs) like atomoxetine, and alpha-2 agonists like the extended-release forms of guanfacine and clonidine. All are Food and Drug Administration–approved for the treatment of ADHD, and the FDA has approved some combination alpha-2 agonists and stimulants treatments for ADHD as well.

When making decisions about formulations for ADHD pharmacotherapy, clinicians should think about whether the patient has issues swallowing tablets or capsules. Tablets, capsules, and chewable tablets may be appropriate for patients who can easily take these medications, while patients who have problems with swallowing pills may benefit from dissolvable tablets, solutions, and transdermal applications. Each of these options “have differences in terms of absorption, also differences in terms of intestinal transit time in younger children, as well as patients perhaps with irritable bowel, as well as other conditions that may affect absorption,” Dr. Strawn said. Different formulations have unique considerations: liquid formulations have the benefit of making precise adjustments, sublingual formulations may have quick absorption and onset, and oral dissolvable tablets can improve treatment adherence and reduce misuse of medication.

Formulations can be available as a delayed release, extended release, pulsatile release, targeted release, or a combination of immediate, delayed, and/or extended release. “Ultimately, what this gives rise to is differences in onset of action and duration, as well as differences in the elimination profile of the medication,” he said.

Transdermal formulations “avoid the first-pass metabolism, which may reduce side effects or increase efficacy,” but patients converting from an oral formulation may require reducing the dose. “It’s always important to remember, for example, with something like Daytrana, the transdermal methylphenidate formulation, if we’re converting a patient from an oral methylphenidate, we roughly need to use half the dose for the transdermal formulation,” Dr. Strawn explained. Transdermal formulations can carry benefits of steady plasma concentrations and longer duration of action but may cause skin irritation or accidentally be removed. “It’s really important they’re properly disposed of because oftentimes they do contain some active medication within the residual matrix.”
 

Methylphenidate, mixed amphetamine salt–based preparations

Modified-release formulations include matrix- or reservoir-based formulations and are most importantly differentiated from other formulations by their gastrointestinal (GI) transit time and the permeation through the GI membrane. When considering what formulation to choose, “it’s important to consider that, even with an ‘extended release formulation,’ all of these medications have some percentage that is immediately released, and that percentage varies considerably from formulation to formulation,” Dr. Strawn said.

He noted that brand names are sometimes used for formulations “because it’s often very difficult for us as clinicians and even for pharmacists to distinguish between these various formulations of the medication, which often have the same ‘extended’ or ‘delayed release’ modifying term within the name of the medication.”

Examples of medications that have greater immediate release include Metadate CD (30%), Aptensio XR (37%), long-acting methylphenidate (50%), dexmethylphenidate extended-release (50%), and Mixed Salts amphetamine extended release (50%). Formulations with a less immediate release include Quillivant solution or Quillichew chewable tablets (20%), Dyanaval XR solution (20%), OROS methylphenidate (22%), Daytrana that begins within 1 or 2 hours and lasts for 9 hours, or lisdexamfetamine that begins within 1 hour and lasts for 9 hours.

Depending on a patient’s needs, one particular formulation may work better than another. Dexmethylphenidate (Focalin XR) has a 50% immediate release and 50% extended release formulation, which “may be really important for a high school student who has first period precalculus followed by second period human geography,” Dr. Strawn said, while “a patient who may have first period study hall and second period art” may benefit from OROS methylphenidate.

Clinicians should also consider the effect of counterclockwise hysteresis when adding a short-acting stimulant later in the day. “There seems to be something really magic about having that ascending concentration time curve that, when we’re on the descending loop of that concentration time curve, we really seem to get a dramatic waning of the effect of the medication, even though technically the concentration is within the ‘therapeutic range,’ ” Dr. Strawn said. “With counterclockwise hysteresis, we see that the effect increases with time for a given concentration of the medication.”
 

Combining ADHD pharmacotherapies

For children and adolescents with ADHD, atomoxetine is a nonstimulant, FDA-approved treatment option. “It seems to be effective not just in terms of total ADHD symptoms, but also in terms of hyperactive and impulsive symptoms as well as the inattentive symptoms,” Dr. Strawn said.

Pharmacogenetics can be a guide for selecting an atomoxetine for a patient with ADHD, he noted. “What I think is most relevant here is the way in which pharmacogenetics can actually help guide our dosing, which then optimizes tolerability, potentially efficacy of atomoxetine,” he said. “Atomoxetine is pretty extensively metabolized by [CYP]2D6, and it’s one of about 300 medications that actually has specific labeling from the FDA on dosing based on genotype. It recommends a slower titration, as well as a lower target dose of atomoxetine in individuals who are P450 2D6 poor metabolizers relative to those patients who are ultra-rapid or normal metabolizers.”

Atomoxetine is most often combined with methylphenidate and has some evidence of benefit in children or adolescents who do not have an adequate response to stimulants alone. When combining stimulants with the alpha-2 agonists guanfacine or clonidine, “there are some improvements in terms of the combination treatment relative to the monotherapy,” Dr. Strawn said. He also emphasized that patients taking guanfacine immediate release tend to have better absorption and faster onset, compared with the extended release formulation. “This is something that potentially is very important when we think beyond steady state and we think about the practical use of this medication,” he said.
 

Baseline history is important

Overall, taking a baseline history of a patient with ADHD is “critically important” before starting them on stimulants, Dr. Strawn said. “Specifically, I would recommend documenting a negative history of syncope, family history of sudden cardiac death, as well as the lack of any known history of structural cardiac abnormalities,” he said. “Without a consultation with the cardiologist specifically around this question, I’m very, very, very hesitant – as in I don’t – use stimulants in patients who have histories of aortic stenosis, Wolff-Parkinson-White, as well as arrhythmogenic right ventricular dysplasia.”

Although patients with ADHD were typically followed with routine hemodynamic monitoring every 3 months prior to the COVID-19 pandemic, some clinicians see their patients with ADHD less frequently if they have been stabilized on a stimulant. “It is important to check not just with the patient, but also with parents and teachers as we’re adjusting medication dose and trying to optimize the treatment regimen, particularly in young children. In adults, it may also be very helpful to talk with spouses,” Dr. Strawn said.

Dr. Strawn also called attention to a recommendation to perform a routine electrocardiogram (EKG) in patients with ADHD who might receive stimulants. “At present, there is no recommendation to obtain a routine screening EKG in these patients, provided that we have an absence of those other red flags on the history,” he said. “Certainly, I would consider it in situations where I do have persistent tachycardia or hypertension, or there are other treatment-emergent symptoms, although really in many of these situations, I’m actually speaking on the phone with my pediatric or adult cardiology colleagues.”

Global Academy and this news organization are owned by the same parent company. Dr. Strawn reported receiving research support from Allergan, the FDA, the National Institutes of Health, Neuronetics, and Otsuka; serving as a consultant and receiving material support from Myriad; receiving royalties from Springer Publishing; and serving as a consultant for Intra-Cellular Therapies. In addition, he has been on the speaker’s bureau for the Neuroscience Education Institute and CMEology, and Medscape.

Clinicians have numerous pharmacotherapy options available to treat ADHD in their toolbox. How do you know which formulation or combination of therapies is right for your patient with ADHD?

According to Jeffrey R. Strawn, MD, the answer depends on onset and duration of the medication and how that fits in to the patient’s current needs.

The most common treatment for ADHD, stimulants, are amphetamine-based and methylphenidate-based compounds known for improving core symptoms of inattention, impulsivity, and hyperactivity and are “probably associated with the most efficacy relative to the other interventions,” Dr. Strawn, associate professor of psychiatry, pediatrics, and clinical pharmacology at Cincinnati Children’s Hospital Medical Center, said at Psychopharmacology Update presented by Current Psychiatry and Global Academy for Medical Education. “But what I think is also really important for us to remember as clinicians is that they improve adherence, social interactions, [and] academic efficiency as well as accuracy.”

Other ADHD pharmacotherapy options include nonstimulant norepinephrine reuptake inhibitors (NRIs) like atomoxetine, and alpha-2 agonists like the extended-release forms of guanfacine and clonidine. All are Food and Drug Administration–approved for the treatment of ADHD, and the FDA has approved some combination alpha-2 agonists and stimulants treatments for ADHD as well.

When making decisions about formulations for ADHD pharmacotherapy, clinicians should think about whether the patient has issues swallowing tablets or capsules. Tablets, capsules, and chewable tablets may be appropriate for patients who can easily take these medications, while patients who have problems with swallowing pills may benefit from dissolvable tablets, solutions, and transdermal applications. Each of these options “have differences in terms of absorption, also differences in terms of intestinal transit time in younger children, as well as patients perhaps with irritable bowel, as well as other conditions that may affect absorption,” Dr. Strawn said. Different formulations have unique considerations: liquid formulations have the benefit of making precise adjustments, sublingual formulations may have quick absorption and onset, and oral dissolvable tablets can improve treatment adherence and reduce misuse of medication.

Formulations can be available as a delayed release, extended release, pulsatile release, targeted release, or a combination of immediate, delayed, and/or extended release. “Ultimately, what this gives rise to is differences in onset of action and duration, as well as differences in the elimination profile of the medication,” he said.

Transdermal formulations “avoid the first-pass metabolism, which may reduce side effects or increase efficacy,” but patients converting from an oral formulation may require reducing the dose. “It’s always important to remember, for example, with something like Daytrana, the transdermal methylphenidate formulation, if we’re converting a patient from an oral methylphenidate, we roughly need to use half the dose for the transdermal formulation,” Dr. Strawn explained. Transdermal formulations can carry benefits of steady plasma concentrations and longer duration of action but may cause skin irritation or accidentally be removed. “It’s really important they’re properly disposed of because oftentimes they do contain some active medication within the residual matrix.”
 

Methylphenidate, mixed amphetamine salt–based preparations

Modified-release formulations include matrix- or reservoir-based formulations and are most importantly differentiated from other formulations by their gastrointestinal (GI) transit time and the permeation through the GI membrane. When considering what formulation to choose, “it’s important to consider that, even with an ‘extended release formulation,’ all of these medications have some percentage that is immediately released, and that percentage varies considerably from formulation to formulation,” Dr. Strawn said.

He noted that brand names are sometimes used for formulations “because it’s often very difficult for us as clinicians and even for pharmacists to distinguish between these various formulations of the medication, which often have the same ‘extended’ or ‘delayed release’ modifying term within the name of the medication.”

Examples of medications that have greater immediate release include Metadate CD (30%), Aptensio XR (37%), long-acting methylphenidate (50%), dexmethylphenidate extended-release (50%), and Mixed Salts amphetamine extended release (50%). Formulations with a less immediate release include Quillivant solution or Quillichew chewable tablets (20%), Dyanaval XR solution (20%), OROS methylphenidate (22%), Daytrana that begins within 1 or 2 hours and lasts for 9 hours, or lisdexamfetamine that begins within 1 hour and lasts for 9 hours.

Depending on a patient’s needs, one particular formulation may work better than another. Dexmethylphenidate (Focalin XR) has a 50% immediate release and 50% extended release formulation, which “may be really important for a high school student who has first period precalculus followed by second period human geography,” Dr. Strawn said, while “a patient who may have first period study hall and second period art” may benefit from OROS methylphenidate.

Clinicians should also consider the effect of counterclockwise hysteresis when adding a short-acting stimulant later in the day. “There seems to be something really magic about having that ascending concentration time curve that, when we’re on the descending loop of that concentration time curve, we really seem to get a dramatic waning of the effect of the medication, even though technically the concentration is within the ‘therapeutic range,’ ” Dr. Strawn said. “With counterclockwise hysteresis, we see that the effect increases with time for a given concentration of the medication.”
 

Combining ADHD pharmacotherapies

For children and adolescents with ADHD, atomoxetine is a nonstimulant, FDA-approved treatment option. “It seems to be effective not just in terms of total ADHD symptoms, but also in terms of hyperactive and impulsive symptoms as well as the inattentive symptoms,” Dr. Strawn said.

Pharmacogenetics can be a guide for selecting an atomoxetine for a patient with ADHD, he noted. “What I think is most relevant here is the way in which pharmacogenetics can actually help guide our dosing, which then optimizes tolerability, potentially efficacy of atomoxetine,” he said. “Atomoxetine is pretty extensively metabolized by [CYP]2D6, and it’s one of about 300 medications that actually has specific labeling from the FDA on dosing based on genotype. It recommends a slower titration, as well as a lower target dose of atomoxetine in individuals who are P450 2D6 poor metabolizers relative to those patients who are ultra-rapid or normal metabolizers.”

Atomoxetine is most often combined with methylphenidate and has some evidence of benefit in children or adolescents who do not have an adequate response to stimulants alone. When combining stimulants with the alpha-2 agonists guanfacine or clonidine, “there are some improvements in terms of the combination treatment relative to the monotherapy,” Dr. Strawn said. He also emphasized that patients taking guanfacine immediate release tend to have better absorption and faster onset, compared with the extended release formulation. “This is something that potentially is very important when we think beyond steady state and we think about the practical use of this medication,” he said.
 

Baseline history is important

Overall, taking a baseline history of a patient with ADHD is “critically important” before starting them on stimulants, Dr. Strawn said. “Specifically, I would recommend documenting a negative history of syncope, family history of sudden cardiac death, as well as the lack of any known history of structural cardiac abnormalities,” he said. “Without a consultation with the cardiologist specifically around this question, I’m very, very, very hesitant – as in I don’t – use stimulants in patients who have histories of aortic stenosis, Wolff-Parkinson-White, as well as arrhythmogenic right ventricular dysplasia.”

Although patients with ADHD were typically followed with routine hemodynamic monitoring every 3 months prior to the COVID-19 pandemic, some clinicians see their patients with ADHD less frequently if they have been stabilized on a stimulant. “It is important to check not just with the patient, but also with parents and teachers as we’re adjusting medication dose and trying to optimize the treatment regimen, particularly in young children. In adults, it may also be very helpful to talk with spouses,” Dr. Strawn said.

Dr. Strawn also called attention to a recommendation to perform a routine electrocardiogram (EKG) in patients with ADHD who might receive stimulants. “At present, there is no recommendation to obtain a routine screening EKG in these patients, provided that we have an absence of those other red flags on the history,” he said. “Certainly, I would consider it in situations where I do have persistent tachycardia or hypertension, or there are other treatment-emergent symptoms, although really in many of these situations, I’m actually speaking on the phone with my pediatric or adult cardiology colleagues.”

Global Academy and this news organization are owned by the same parent company. Dr. Strawn reported receiving research support from Allergan, the FDA, the National Institutes of Health, Neuronetics, and Otsuka; serving as a consultant and receiving material support from Myriad; receiving royalties from Springer Publishing; and serving as a consultant for Intra-Cellular Therapies. In addition, he has been on the speaker’s bureau for the Neuroscience Education Institute and CMEology, and Medscape.

Clinicians have numerous pharmacotherapy options available to treat ADHD in their toolbox. How do you know which formulation or combination of therapies is right for your patient with ADHD?

According to Jeffrey R. Strawn, MD, the answer depends on onset and duration of the medication and how that fits in to the patient’s current needs.

The most common treatment for ADHD, stimulants, are amphetamine-based and methylphenidate-based compounds known for improving core symptoms of inattention, impulsivity, and hyperactivity and are “probably associated with the most efficacy relative to the other interventions,” Dr. Strawn, associate professor of psychiatry, pediatrics, and clinical pharmacology at Cincinnati Children’s Hospital Medical Center, said at Psychopharmacology Update presented by Current Psychiatry and Global Academy for Medical Education. “But what I think is also really important for us to remember as clinicians is that they improve adherence, social interactions, [and] academic efficiency as well as accuracy.”

Other ADHD pharmacotherapy options include nonstimulant norepinephrine reuptake inhibitors (NRIs) like atomoxetine, and alpha-2 agonists like the extended-release forms of guanfacine and clonidine. All are Food and Drug Administration–approved for the treatment of ADHD, and the FDA has approved some combination alpha-2 agonists and stimulants treatments for ADHD as well.

When making decisions about formulations for ADHD pharmacotherapy, clinicians should think about whether the patient has issues swallowing tablets or capsules. Tablets, capsules, and chewable tablets may be appropriate for patients who can easily take these medications, while patients who have problems with swallowing pills may benefit from dissolvable tablets, solutions, and transdermal applications. Each of these options “have differences in terms of absorption, also differences in terms of intestinal transit time in younger children, as well as patients perhaps with irritable bowel, as well as other conditions that may affect absorption,” Dr. Strawn said. Different formulations have unique considerations: liquid formulations have the benefit of making precise adjustments, sublingual formulations may have quick absorption and onset, and oral dissolvable tablets can improve treatment adherence and reduce misuse of medication.

Formulations can be available as a delayed release, extended release, pulsatile release, targeted release, or a combination of immediate, delayed, and/or extended release. “Ultimately, what this gives rise to is differences in onset of action and duration, as well as differences in the elimination profile of the medication,” he said.

Transdermal formulations “avoid the first-pass metabolism, which may reduce side effects or increase efficacy,” but patients converting from an oral formulation may require reducing the dose. “It’s always important to remember, for example, with something like Daytrana, the transdermal methylphenidate formulation, if we’re converting a patient from an oral methylphenidate, we roughly need to use half the dose for the transdermal formulation,” Dr. Strawn explained. Transdermal formulations can carry benefits of steady plasma concentrations and longer duration of action but may cause skin irritation or accidentally be removed. “It’s really important they’re properly disposed of because oftentimes they do contain some active medication within the residual matrix.”
 

Methylphenidate, mixed amphetamine salt–based preparations

Modified-release formulations include matrix- or reservoir-based formulations and are most importantly differentiated from other formulations by their gastrointestinal (GI) transit time and the permeation through the GI membrane. When considering what formulation to choose, “it’s important to consider that, even with an ‘extended release formulation,’ all of these medications have some percentage that is immediately released, and that percentage varies considerably from formulation to formulation,” Dr. Strawn said.

He noted that brand names are sometimes used for formulations “because it’s often very difficult for us as clinicians and even for pharmacists to distinguish between these various formulations of the medication, which often have the same ‘extended’ or ‘delayed release’ modifying term within the name of the medication.”

Examples of medications that have greater immediate release include Metadate CD (30%), Aptensio XR (37%), long-acting methylphenidate (50%), dexmethylphenidate extended-release (50%), and Mixed Salts amphetamine extended release (50%). Formulations with a less immediate release include Quillivant solution or Quillichew chewable tablets (20%), Dyanaval XR solution (20%), OROS methylphenidate (22%), Daytrana that begins within 1 or 2 hours and lasts for 9 hours, or lisdexamfetamine that begins within 1 hour and lasts for 9 hours.

Depending on a patient’s needs, one particular formulation may work better than another. Dexmethylphenidate (Focalin XR) has a 50% immediate release and 50% extended release formulation, which “may be really important for a high school student who has first period precalculus followed by second period human geography,” Dr. Strawn said, while “a patient who may have first period study hall and second period art” may benefit from OROS methylphenidate.

Clinicians should also consider the effect of counterclockwise hysteresis when adding a short-acting stimulant later in the day. “There seems to be something really magic about having that ascending concentration time curve that, when we’re on the descending loop of that concentration time curve, we really seem to get a dramatic waning of the effect of the medication, even though technically the concentration is within the ‘therapeutic range,’ ” Dr. Strawn said. “With counterclockwise hysteresis, we see that the effect increases with time for a given concentration of the medication.”
 

Combining ADHD pharmacotherapies

For children and adolescents with ADHD, atomoxetine is a nonstimulant, FDA-approved treatment option. “It seems to be effective not just in terms of total ADHD symptoms, but also in terms of hyperactive and impulsive symptoms as well as the inattentive symptoms,” Dr. Strawn said.

Pharmacogenetics can be a guide for selecting an atomoxetine for a patient with ADHD, he noted. “What I think is most relevant here is the way in which pharmacogenetics can actually help guide our dosing, which then optimizes tolerability, potentially efficacy of atomoxetine,” he said. “Atomoxetine is pretty extensively metabolized by [CYP]2D6, and it’s one of about 300 medications that actually has specific labeling from the FDA on dosing based on genotype. It recommends a slower titration, as well as a lower target dose of atomoxetine in individuals who are P450 2D6 poor metabolizers relative to those patients who are ultra-rapid or normal metabolizers.”

Atomoxetine is most often combined with methylphenidate and has some evidence of benefit in children or adolescents who do not have an adequate response to stimulants alone. When combining stimulants with the alpha-2 agonists guanfacine or clonidine, “there are some improvements in terms of the combination treatment relative to the monotherapy,” Dr. Strawn said. He also emphasized that patients taking guanfacine immediate release tend to have better absorption and faster onset, compared with the extended release formulation. “This is something that potentially is very important when we think beyond steady state and we think about the practical use of this medication,” he said.
 

Baseline history is important

Overall, taking a baseline history of a patient with ADHD is “critically important” before starting them on stimulants, Dr. Strawn said. “Specifically, I would recommend documenting a negative history of syncope, family history of sudden cardiac death, as well as the lack of any known history of structural cardiac abnormalities,” he said. “Without a consultation with the cardiologist specifically around this question, I’m very, very, very hesitant – as in I don’t – use stimulants in patients who have histories of aortic stenosis, Wolff-Parkinson-White, as well as arrhythmogenic right ventricular dysplasia.”

Although patients with ADHD were typically followed with routine hemodynamic monitoring every 3 months prior to the COVID-19 pandemic, some clinicians see their patients with ADHD less frequently if they have been stabilized on a stimulant. “It is important to check not just with the patient, but also with parents and teachers as we’re adjusting medication dose and trying to optimize the treatment regimen, particularly in young children. In adults, it may also be very helpful to talk with spouses,” Dr. Strawn said.

Dr. Strawn also called attention to a recommendation to perform a routine electrocardiogram (EKG) in patients with ADHD who might receive stimulants. “At present, there is no recommendation to obtain a routine screening EKG in these patients, provided that we have an absence of those other red flags on the history,” he said. “Certainly, I would consider it in situations where I do have persistent tachycardia or hypertension, or there are other treatment-emergent symptoms, although really in many of these situations, I’m actually speaking on the phone with my pediatric or adult cardiology colleagues.”

Global Academy and this news organization are owned by the same parent company. Dr. Strawn reported receiving research support from Allergan, the FDA, the National Institutes of Health, Neuronetics, and Otsuka; serving as a consultant and receiving material support from Myriad; receiving royalties from Springer Publishing; and serving as a consultant for Intra-Cellular Therapies. In addition, he has been on the speaker’s bureau for the Neuroscience Education Institute and CMEology, and Medscape.

The United States just passed a dubious COVID-19 milestone: Just over 1% of all children have been infected by the coronavirus this year, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

There have been 1,052 cases of COVID-19 per 100,000 children as of Oct. 22, and that works out to 1.05% of all children in the country. The cumulative number of pediatric cases is 792,188, and children now represent 11% of all COVID-19 cases, the AAP and the CHA reported Oct. 26.

There were just over 50,000 new child cases reported in the week ending Oct. 22, which was 13.6% of the national total of almost 370,000. That’s up slightly from the 13.3% the previous week but still down from the spike seen in mid-September, based on the data collected from the websites of 49 state health departments (New York does not report ages), along with the District of Columbia, New York City, Puerto Rico, and Guam.

The state-level data show that California has had more COVID-19 cases in children (92,864) than any other state, although Texas has reported ages for only 7% of its confirmed cases. Illinois is next with 46,006 cases, followed by Florida at 45,575, although Florida is using an age range of 0-14 years to define a child case, the AAP and CHA noted.

Other measures largely put small states at the extremes:

• North Dakota has the highest cumulative rate: 2,954 cases per 100,000 children.
• Vermont has the lowest cumulative rate: 190.5 per 100,000.
• Wyoming has the highest proportion of cases in children: 27.7%.
• New Jersey has the lowest proportion of child cases: 4.6%.

There were no COVID-19–related deaths in children reported the week ending Oct. 22, so the total number remains at 120, which is just 0.06% of the total for all ages, based on data from 42 states and New York City. Hospitalization figures put admissions at almost 5,600 in children, or 1.7% of all hospitalizations, although those data come from just 24 states and New York City, the AAP and CHA said.

[email protected]

The United States just passed a dubious COVID-19 milestone: Just over 1% of all children have been infected by the coronavirus this year, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

There have been 1,052 cases of COVID-19 per 100,000 children as of Oct. 22, and that works out to 1.05% of all children in the country. The cumulative number of pediatric cases is 792,188, and children now represent 11% of all COVID-19 cases, the AAP and the CHA reported Oct. 26.

There were just over 50,000 new child cases reported in the week ending Oct. 22, which was 13.6% of the national total of almost 370,000. That’s up slightly from the 13.3% the previous week but still down from the spike seen in mid-September, based on the data collected from the websites of 49 state health departments (New York does not report ages), along with the District of Columbia, New York City, Puerto Rico, and Guam.

The state-level data show that California has had more COVID-19 cases in children (92,864) than any other state, although Texas has reported ages for only 7% of its confirmed cases. Illinois is next with 46,006 cases, followed by Florida at 45,575, although Florida is using an age range of 0-14 years to define a child case, the AAP and CHA noted.

Other measures largely put small states at the extremes:

• North Dakota has the highest cumulative rate: 2,954 cases per 100,000 children.
• Vermont has the lowest cumulative rate: 190.5 per 100,000.
• Wyoming has the highest proportion of cases in children: 27.7%.
• New Jersey has the lowest proportion of child cases: 4.6%.

There were no COVID-19–related deaths in children reported the week ending Oct. 22, so the total number remains at 120, which is just 0.06% of the total for all ages, based on data from 42 states and New York City. Hospitalization figures put admissions at almost 5,600 in children, or 1.7% of all hospitalizations, although those data come from just 24 states and New York City, the AAP and CHA said.

[email protected]

The United States just passed a dubious COVID-19 milestone: Just over 1% of all children have been infected by the coronavirus this year, according to a report from the American Academy of Pediatrics and the Children’s Hospital Association.

There have been 1,052 cases of COVID-19 per 100,000 children as of Oct. 22, and that works out to 1.05% of all children in the country. The cumulative number of pediatric cases is 792,188, and children now represent 11% of all COVID-19 cases, the AAP and the CHA reported Oct. 26.

There were just over 50,000 new child cases reported in the week ending Oct. 22, which was 13.6% of the national total of almost 370,000. That’s up slightly from the 13.3% the previous week but still down from the spike seen in mid-September, based on the data collected from the websites of 49 state health departments (New York does not report ages), along with the District of Columbia, New York City, Puerto Rico, and Guam.

The state-level data show that California has had more COVID-19 cases in children (92,864) than any other state, although Texas has reported ages for only 7% of its confirmed cases. Illinois is next with 46,006 cases, followed by Florida at 45,575, although Florida is using an age range of 0-14 years to define a child case, the AAP and CHA noted.

Other measures largely put small states at the extremes:

• North Dakota has the highest cumulative rate: 2,954 cases per 100,000 children.
• Vermont has the lowest cumulative rate: 190.5 per 100,000.
• Wyoming has the highest proportion of cases in children: 27.7%.
• New Jersey has the lowest proportion of child cases: 4.6%.

There were no COVID-19–related deaths in children reported the week ending Oct. 22, so the total number remains at 120, which is just 0.06% of the total for all ages, based on data from 42 states and New York City. Hospitalization figures put admissions at almost 5,600 in children, or 1.7% of all hospitalizations, although those data come from just 24 states and New York City, the AAP and CHA said.

[email protected]

Antibody response to the SARS-CoV-2 virus wanes over time, latest research has suggested.

An ongoing study led by Imperial College London (ICL) found that the proportion of people testing positive for COVID-19 antibodies dropped by 26.5% over a 3-month period between June and September.

The findings from a non–peer reviewed preprint suggested that infection with SARS-CoV-2 confers only limited protection against reinfection.

Professor Paul Elliott, director of the REACT-2 programme at ICL, said: “Testing positive for antibodies does not mean you are immune to COVID-19.

“It remains unclear what level of immunity antibodies provide, or for how long this immunity lasts.”

Experts said that, while the findings suggested that immunity might fade over time, the severity of illness from further infections could be reduced.
 

Antibody prevalence declined in all adults

Results from cross-sectional studies over the 3-month period involved 365,104 adults who self-administered a lateral flow immunoassay test.

There were 17,576 positive tests over the three rounds.

Antibody prevalence, adjusted for test characteristics and weighted to the adult population of England, declined from 6.0% to 4.4%, a reduction of 26.5% over the 3 months.

The decline was seen in all age groups. However, the lowest prevalence of a positive test, and the largest fall, was seen in those aged 75 years and older.

No change was seen in positive antibody tests in health care workers over the 3 months.

The results suggested that people who did not show symptoms of COVID-19 were more likely to lose detectable antibodies sooner than those who did show symptoms.

Prof Helen Ward, one of the lead authors of the report said that, while it was clear that the proportion of people with antibodies was falling over time, “We don’t yet know whether this will leave these people at risk of reinfection with the virus that causes COVID-19, but it is essential that everyone continues to follow guidance to reduce the risk to themselves and others.”
 

Results ‘weaken argument for herd immunity’

Commenting on the results to the Science Media Centre, Rowland Kao, professor of veterinary epidemiology and data science at the University of Edinburgh, warned that, if the results were correct, “any strategy that relies on ‘herd immunity’ lacks credibility.”

However, he added that, “while the decline is substantial, nevertheless substantial proportions of the population do retain some immune response, over 4 months after the peak of the epidemic”.

Eleanor Riley, professor of immunology and infectious disease, also from the University of Edinburgh, said it was too early to assume that immunity to SARS-CoV-2 did not last because “the study does not look at antibody concentrations, antibody function, or other aspects of immunity such as T-cell immunity and does not look at the trajectory of antibody levels in the same individuals over time”.

However, she said the findings did not mean that a vaccine would be ineffective because vaccines contained adjuvants that could induce durable immune responses, particularly with multiple immunizations.

“What is not clear is how quickly antibody levels would rise again if a person encounters the SARS-CoV-2 virus a second time. It is possible they will still rapidly respond, and either have a milder illness, or remain protected through immune memory,” commented Dr. Alexander Edwards, associate professor in biomedical technology at the University of Reading.

Health Minister Lord Bethell said: “Regardless of the result of an antibody test, everyone must continue to comply with government guidelines including social distancing, self-isolating, and getting a test if you have symptoms, and always remember: hands, face, space.”
 

This article first appeared on Medscape.com.

Antibody response to the SARS-CoV-2 virus wanes over time, latest research has suggested.

An ongoing study led by Imperial College London (ICL) found that the proportion of people testing positive for COVID-19 antibodies dropped by 26.5% over a 3-month period between June and September.

The findings from a non–peer reviewed preprint suggested that infection with SARS-CoV-2 confers only limited protection against reinfection.

Professor Paul Elliott, director of the REACT-2 programme at ICL, said: “Testing positive for antibodies does not mean you are immune to COVID-19.

“It remains unclear what level of immunity antibodies provide, or for how long this immunity lasts.”

Experts said that, while the findings suggested that immunity might fade over time, the severity of illness from further infections could be reduced.
 

Antibody prevalence declined in all adults

Results from cross-sectional studies over the 3-month period involved 365,104 adults who self-administered a lateral flow immunoassay test.

There were 17,576 positive tests over the three rounds.

Antibody prevalence, adjusted for test characteristics and weighted to the adult population of England, declined from 6.0% to 4.4%, a reduction of 26.5% over the 3 months.

The decline was seen in all age groups. However, the lowest prevalence of a positive test, and the largest fall, was seen in those aged 75 years and older.

No change was seen in positive antibody tests in health care workers over the 3 months.

The results suggested that people who did not show symptoms of COVID-19 were more likely to lose detectable antibodies sooner than those who did show symptoms.

Prof Helen Ward, one of the lead authors of the report said that, while it was clear that the proportion of people with antibodies was falling over time, “We don’t yet know whether this will leave these people at risk of reinfection with the virus that causes COVID-19, but it is essential that everyone continues to follow guidance to reduce the risk to themselves and others.”
 

Results ‘weaken argument for herd immunity’

Commenting on the results to the Science Media Centre, Rowland Kao, professor of veterinary epidemiology and data science at the University of Edinburgh, warned that, if the results were correct, “any strategy that relies on ‘herd immunity’ lacks credibility.”

However, he added that, “while the decline is substantial, nevertheless substantial proportions of the population do retain some immune response, over 4 months after the peak of the epidemic”.

Eleanor Riley, professor of immunology and infectious disease, also from the University of Edinburgh, said it was too early to assume that immunity to SARS-CoV-2 did not last because “the study does not look at antibody concentrations, antibody function, or other aspects of immunity such as T-cell immunity and does not look at the trajectory of antibody levels in the same individuals over time”.

However, she said the findings did not mean that a vaccine would be ineffective because vaccines contained adjuvants that could induce durable immune responses, particularly with multiple immunizations.

“What is not clear is how quickly antibody levels would rise again if a person encounters the SARS-CoV-2 virus a second time. It is possible they will still rapidly respond, and either have a milder illness, or remain protected through immune memory,” commented Dr. Alexander Edwards, associate professor in biomedical technology at the University of Reading.

Health Minister Lord Bethell said: “Regardless of the result of an antibody test, everyone must continue to comply with government guidelines including social distancing, self-isolating, and getting a test if you have symptoms, and always remember: hands, face, space.”
 

This article first appeared on Medscape.com.

Antibody response to the SARS-CoV-2 virus wanes over time, latest research has suggested.

An ongoing study led by Imperial College London (ICL) found that the proportion of people testing positive for COVID-19 antibodies dropped by 26.5% over a 3-month period between June and September.

The findings from a non–peer reviewed preprint suggested that infection with SARS-CoV-2 confers only limited protection against reinfection.

Professor Paul Elliott, director of the REACT-2 programme at ICL, said: “Testing positive for antibodies does not mean you are immune to COVID-19.

“It remains unclear what level of immunity antibodies provide, or for how long this immunity lasts.”

Experts said that, while the findings suggested that immunity might fade over time, the severity of illness from further infections could be reduced.
 

Antibody prevalence declined in all adults

Results from cross-sectional studies over the 3-month period involved 365,104 adults who self-administered a lateral flow immunoassay test.

There were 17,576 positive tests over the three rounds.

Antibody prevalence, adjusted for test characteristics and weighted to the adult population of England, declined from 6.0% to 4.4%, a reduction of 26.5% over the 3 months.

The decline was seen in all age groups. However, the lowest prevalence of a positive test, and the largest fall, was seen in those aged 75 years and older.

No change was seen in positive antibody tests in health care workers over the 3 months.

The results suggested that people who did not show symptoms of COVID-19 were more likely to lose detectable antibodies sooner than those who did show symptoms.

Prof Helen Ward, one of the lead authors of the report said that, while it was clear that the proportion of people with antibodies was falling over time, “We don’t yet know whether this will leave these people at risk of reinfection with the virus that causes COVID-19, but it is essential that everyone continues to follow guidance to reduce the risk to themselves and others.”
 

Results ‘weaken argument for herd immunity’

Commenting on the results to the Science Media Centre, Rowland Kao, professor of veterinary epidemiology and data science at the University of Edinburgh, warned that, if the results were correct, “any strategy that relies on ‘herd immunity’ lacks credibility.”

However, he added that, “while the decline is substantial, nevertheless substantial proportions of the population do retain some immune response, over 4 months after the peak of the epidemic”.

Eleanor Riley, professor of immunology and infectious disease, also from the University of Edinburgh, said it was too early to assume that immunity to SARS-CoV-2 did not last because “the study does not look at antibody concentrations, antibody function, or other aspects of immunity such as T-cell immunity and does not look at the trajectory of antibody levels in the same individuals over time”.

However, she said the findings did not mean that a vaccine would be ineffective because vaccines contained adjuvants that could induce durable immune responses, particularly with multiple immunizations.

“What is not clear is how quickly antibody levels would rise again if a person encounters the SARS-CoV-2 virus a second time. It is possible they will still rapidly respond, and either have a milder illness, or remain protected through immune memory,” commented Dr. Alexander Edwards, associate professor in biomedical technology at the University of Reading.

Health Minister Lord Bethell said: “Regardless of the result of an antibody test, everyone must continue to comply with government guidelines including social distancing, self-isolating, and getting a test if you have symptoms, and always remember: hands, face, space.”
 

This article first appeared on Medscape.com.

Long-term treatment with ataluren delays loss of ambulation and may delay decline in pulmonary function in patients with nonsense mutation Duchenne muscular dystrophy (nmDMD), according to study results presented at the 2020 CNS-ICNA Conjoint Meeting, held virtually this year. Because so few patients in the study reached one of the negative pulmonary endpoints, longer follow-up will be needed to assess more conclusively the effect of ataluren on pulmonary function, said Francesco Bibbiani, MD, vice president of clinical development at PTC Therapeutics.

DMD is a rare and fatal neuromuscular disorder that causes progressive muscle weakness. Between 10% and 15% of patients with DMD have a nonsense mutation in the DMD gene. This mutation creates a premature stop codon that prevents the translation of a full-length dystrophin protein. Ataluren is designed to promote readthrough of this premature stop codon, thus enabling the production of a full-length dystrophin protein. An oral formulation of the drug has been approved in several European and South American countries.
 

Comparing treatment and standard of care

Study 019 was a phase 3, multicenter, open-label, long-term safety study of ataluren that enrolled international patients with nmDMD, most of whom had participated previously in a trial of ataluren. Dr. Bibbiani and colleagues conducted a post hoc analysis of Study 019 data to determine whether patients with nmDMD who received ataluren and standard of care for as long as 240 weeks had a different time to loss of ambulation and to decline of pulmonary function, compared with patients who received standard of care alone. Patients who were eligible to participate in Study 019 were male, had nmDMD, and had completed the blinded study drug treatment in a previous PTC-sponsored study. Treatment consisted of two 10-mg/kg doses and one 20-mg/kg dose of ataluren per day.

Dr. Bibbiani and colleagues used participants in the Cooperative International Neuromuscular Research Group Duchenne Natural History Study (CINRG DNHS) as a control group. CINRG DNHS was a prospective, longitudinal study of patients with DMD who received standard of care at 20 centers worldwide from 2006 to 2016. Dr. Bibbiani and colleagues used propensity-score matching to pair participants in this study with participants in Study 019. They matched patients with respect to age at onset of first symptoms, age at initiation of corticosteroid use, duration of deflazacort use, and duration of use of other corticosteroids. These factors are established predictors of disease progression in DMD.

Patients were eligible for inclusion in the post hoc analysis if they had available data for age, loss of ambulation, and the covariates selected for matching. Of 94 Study 019 participants, 60 were eligible for propensity-score matching with participants in CINRG DNHS. Forty-five nonambulatory patients were eligible for matching in the analysis of age at the decline in pulmonary function because data for age at loss of ambulation and for the three pulmonary endpoints measured were available for them. Thus, comparable population sizes were available for each analysis.
 

Treatment delayed disease milestones

Kaplan–Meier analysis indicated that the median age at various disease milestones was higher among patients who received ataluren and standard of care, compared with those who received standard of care alone. The median age at loss of ambulation was 15.5 years for Study 019 participants and 13.3 years for CINRG DNHS patients. The median age at predicted forced vital capacity (FVC) of less than 60% was 18.1 years for Study 019 participants and 15.8 years for CINRG DNHS participants. The median age at predicted FVC of less than 50% was 19.1 years for Study 019 participants and 17.9 years for CINRG DNHS participants. Finally, the median age at FVC of less than 1 L was not calculable for Study 019 participants and 23.8 years for CINRG DNHS participants.

The Study 019 and CINRG DNHS study groups are sponsored by PTC Therapeutics, which developed ataluren. Dr. Bibbiani is an employee of PTC Therapeutics.

[email protected]

SOURCE: McDonald C, et al. CNS-ICNA 2020. Abstract PL69.

Long-term treatment with ataluren delays loss of ambulation and may delay decline in pulmonary function in patients with nonsense mutation Duchenne muscular dystrophy (nmDMD), according to study results presented at the 2020 CNS-ICNA Conjoint Meeting, held virtually this year. Because so few patients in the study reached one of the negative pulmonary endpoints, longer follow-up will be needed to assess more conclusively the effect of ataluren on pulmonary function, said Francesco Bibbiani, MD, vice president of clinical development at PTC Therapeutics.

DMD is a rare and fatal neuromuscular disorder that causes progressive muscle weakness. Between 10% and 15% of patients with DMD have a nonsense mutation in the DMD gene. This mutation creates a premature stop codon that prevents the translation of a full-length dystrophin protein. Ataluren is designed to promote readthrough of this premature stop codon, thus enabling the production of a full-length dystrophin protein. An oral formulation of the drug has been approved in several European and South American countries.
 

Comparing treatment and standard of care

Study 019 was a phase 3, multicenter, open-label, long-term safety study of ataluren that enrolled international patients with nmDMD, most of whom had participated previously in a trial of ataluren. Dr. Bibbiani and colleagues conducted a post hoc analysis of Study 019 data to determine whether patients with nmDMD who received ataluren and standard of care for as long as 240 weeks had a different time to loss of ambulation and to decline of pulmonary function, compared with patients who received standard of care alone. Patients who were eligible to participate in Study 019 were male, had nmDMD, and had completed the blinded study drug treatment in a previous PTC-sponsored study. Treatment consisted of two 10-mg/kg doses and one 20-mg/kg dose of ataluren per day.

Dr. Bibbiani and colleagues used participants in the Cooperative International Neuromuscular Research Group Duchenne Natural History Study (CINRG DNHS) as a control group. CINRG DNHS was a prospective, longitudinal study of patients with DMD who received standard of care at 20 centers worldwide from 2006 to 2016. Dr. Bibbiani and colleagues used propensity-score matching to pair participants in this study with participants in Study 019. They matched patients with respect to age at onset of first symptoms, age at initiation of corticosteroid use, duration of deflazacort use, and duration of use of other corticosteroids. These factors are established predictors of disease progression in DMD.

Patients were eligible for inclusion in the post hoc analysis if they had available data for age, loss of ambulation, and the covariates selected for matching. Of 94 Study 019 participants, 60 were eligible for propensity-score matching with participants in CINRG DNHS. Forty-five nonambulatory patients were eligible for matching in the analysis of age at the decline in pulmonary function because data for age at loss of ambulation and for the three pulmonary endpoints measured were available for them. Thus, comparable population sizes were available for each analysis.
 

Treatment delayed disease milestones

Kaplan–Meier analysis indicated that the median age at various disease milestones was higher among patients who received ataluren and standard of care, compared with those who received standard of care alone. The median age at loss of ambulation was 15.5 years for Study 019 participants and 13.3 years for CINRG DNHS patients. The median age at predicted forced vital capacity (FVC) of less than 60% was 18.1 years for Study 019 participants and 15.8 years for CINRG DNHS participants. The median age at predicted FVC of less than 50% was 19.1 years for Study 019 participants and 17.9 years for CINRG DNHS participants. Finally, the median age at FVC of less than 1 L was not calculable for Study 019 participants and 23.8 years for CINRG DNHS participants.

The Study 019 and CINRG DNHS study groups are sponsored by PTC Therapeutics, which developed ataluren. Dr. Bibbiani is an employee of PTC Therapeutics.

[email protected]

SOURCE: McDonald C, et al. CNS-ICNA 2020. Abstract PL69.

Long-term treatment with ataluren delays loss of ambulation and may delay decline in pulmonary function in patients with nonsense mutation Duchenne muscular dystrophy (nmDMD), according to study results presented at the 2020 CNS-ICNA Conjoint Meeting, held virtually this year. Because so few patients in the study reached one of the negative pulmonary endpoints, longer follow-up will be needed to assess more conclusively the effect of ataluren on pulmonary function, said Francesco Bibbiani, MD, vice president of clinical development at PTC Therapeutics.

DMD is a rare and fatal neuromuscular disorder that causes progressive muscle weakness. Between 10% and 15% of patients with DMD have a nonsense mutation in the DMD gene. This mutation creates a premature stop codon that prevents the translation of a full-length dystrophin protein. Ataluren is designed to promote readthrough of this premature stop codon, thus enabling the production of a full-length dystrophin protein. An oral formulation of the drug has been approved in several European and South American countries.
 

Comparing treatment and standard of care

Study 019 was a phase 3, multicenter, open-label, long-term safety study of ataluren that enrolled international patients with nmDMD, most of whom had participated previously in a trial of ataluren. Dr. Bibbiani and colleagues conducted a post hoc analysis of Study 019 data to determine whether patients with nmDMD who received ataluren and standard of care for as long as 240 weeks had a different time to loss of ambulation and to decline of pulmonary function, compared with patients who received standard of care alone. Patients who were eligible to participate in Study 019 were male, had nmDMD, and had completed the blinded study drug treatment in a previous PTC-sponsored study. Treatment consisted of two 10-mg/kg doses and one 20-mg/kg dose of ataluren per day.

Dr. Bibbiani and colleagues used participants in the Cooperative International Neuromuscular Research Group Duchenne Natural History Study (CINRG DNHS) as a control group. CINRG DNHS was a prospective, longitudinal study of patients with DMD who received standard of care at 20 centers worldwide from 2006 to 2016. Dr. Bibbiani and colleagues used propensity-score matching to pair participants in this study with participants in Study 019. They matched patients with respect to age at onset of first symptoms, age at initiation of corticosteroid use, duration of deflazacort use, and duration of use of other corticosteroids. These factors are established predictors of disease progression in DMD.

Patients were eligible for inclusion in the post hoc analysis if they had available data for age, loss of ambulation, and the covariates selected for matching. Of 94 Study 019 participants, 60 were eligible for propensity-score matching with participants in CINRG DNHS. Forty-five nonambulatory patients were eligible for matching in the analysis of age at the decline in pulmonary function because data for age at loss of ambulation and for the three pulmonary endpoints measured were available for them. Thus, comparable population sizes were available for each analysis.
 

Treatment delayed disease milestones

Kaplan–Meier analysis indicated that the median age at various disease milestones was higher among patients who received ataluren and standard of care, compared with those who received standard of care alone. The median age at loss of ambulation was 15.5 years for Study 019 participants and 13.3 years for CINRG DNHS patients. The median age at predicted forced vital capacity (FVC) of less than 60% was 18.1 years for Study 019 participants and 15.8 years for CINRG DNHS participants. The median age at predicted FVC of less than 50% was 19.1 years for Study 019 participants and 17.9 years for CINRG DNHS participants. Finally, the median age at FVC of less than 1 L was not calculable for Study 019 participants and 23.8 years for CINRG DNHS participants.

The Study 019 and CINRG DNHS study groups are sponsored by PTC Therapeutics, which developed ataluren. Dr. Bibbiani is an employee of PTC Therapeutics.

[email protected]

SOURCE: McDonald C, et al. CNS-ICNA 2020. Abstract PL69.