Pulmonary Health Hub

Despite recent advances in the diagnosis, treatment, and prevention of pediatric tuberculosis in children living with HIV (CLHIV) and HIV-exposed uninfected children (HEU), several unmet needs remain, including studies evaluating the feasibility of shortened TB treatment regimens.

“Children living with HIV contribute disproportionately to pediatric TB mortality rates, accounting for 16% of child TB deaths, and many cases are underdiagnosed and underreported,” said Nicole Salazar-Austin, MD, of Johns Hopkins University in Baltimore. She provided an update on pediatric TB prevention and treatment during an educational symposium at this year’s virtual Conference on Retroviruses & Opportunistic Infections.

Dr. Salazar-Austin summarized current diagnostics for pediatric TB and reviewed options for the prevention and treatment of TB in CLHIV and HEU.
 

TB and CLHIV

Presently, TB is the most common opportunistic infection among CLHIV, and those with severe immune suppression have a fivefold greater risk of TB disease. While antiretroviral therapy (ART) is highly protective against TB disease in CLHIV, only about 50% of eligible children receive ART.

Dr. Salazar-Austin explained that many individuals with TB/HIV coinfection are unaware of their coinfection and not receiving treatment. Despite recommendations, TB preventive therapy is poorly implemented in CLHIV, especially in high-burden settings.
 

Pediatric TB diagnosis

Smear microscopy, culture, and Xpert MTB/RIF Ultra are the main diagnostic modalities for pediatric TB. The Xpert MTB/RIF test is an automated PCR-based assay that simultaneously and rapidly detects Mycobacterium tuberculosis complex and resistance to rifampin. The test is currently recommended by the World Health Organization as the initial diagnostic method for presumptive TB cases in both adults and children.

However, under optimal conditions, only 40% of TB cases will be detected. This is in part due to limited implementation of sputum collection procedures, but recent evidence has shown that collection of multiple specimens improves sensitivity for both culture and Xpert MTB/RIF Ultra across all specimen types, Dr. Salazar-Austin explained.

In 2020, the WHO endorsed the use of stool samples for the diagnosis of pediatric pulmonary TB. Stool Xpert is an emerging alternative, noninvasive method for ruling in pediatric TB disease, and has shown sensitivity and specificity similar to that of Xpert MTB/RIF Ultra.

“TB diagnostics have limited sensitivity in children, and efforts are ongoing to maximize current diagnostics, but new diagnostics are needed,” said Dr. Salazar-Austin.
 

Pediatric TB treatment

Despite the high frequency of TB as an opportunistic infection in CLHIV, current data on co-treatment strategies are limited.

Dolutegravir-based regimens are the preferred first-line regimen for CLHIV. In June 2020, the Food and Drug Administration approved the dispersible dolutegravir tablet, and it is expected to become widely available in 2021.

In children with TB/HIV coinfection who receive dolutegravir and rifampicin, dolutegravir is typically dosed twice daily because of a known drug interaction, based on data from the ODYSSEY study. The WHO recommendations for treatment of pediatric TB/HIV coinfection were recently updated to reflect twice-daily dosing of dolutegravir.

Despite these new recommendations, data are currently limited, and observational pharmacokinetic studies evaluating twice daily dolutegravir with TB treatment in young children are needed.

“More work is needed to evaluate the drug-drug interactions and proper dosing of rifamycins with dolutegravir for the treatment and prevention of TB in CLHIV,” Dr. Salazar-Austin said.

Based on data from TBTC Study 31/ACTG A5349, high-dose rifapentine (a rifamycin) with moxifloxacin (a fluoroquinolone) was noninferior to rifapentine alone in newly diagnosed, culture positive, drug-susceptible TB in children 12 years and older.

Whether rifapentine and moxifloxacin (RPT-Mox) can be used in children under 12 years remains unknown, but future studies may help answer this question, Dr. Salazar-Austin noted. The FDA has restricted the use of fluoroquinolones in children because of a possible effect on cartilage development, she explained.

Furthermore, recent data from the SHINE trial suggested that shortened treatment regimens may hold promise for children with TB.

“While shortened TB treatment regimens hold promise, much work needs to be done in children to implement RPT-Mox, but the results from SHINE can be implemented rapidly,” Dr. Salazar-Austin said.

Dr. Salazar-Austin disclosed no conflicts of interest. The presentation was funded by NICHD, UNITAID, Fogarty Institute, and the IMPAACT network.

Despite recent advances in the diagnosis, treatment, and prevention of pediatric tuberculosis in children living with HIV (CLHIV) and HIV-exposed uninfected children (HEU), several unmet needs remain, including studies evaluating the feasibility of shortened TB treatment regimens.

“Children living with HIV contribute disproportionately to pediatric TB mortality rates, accounting for 16% of child TB deaths, and many cases are underdiagnosed and underreported,” said Nicole Salazar-Austin, MD, of Johns Hopkins University in Baltimore. She provided an update on pediatric TB prevention and treatment during an educational symposium at this year’s virtual Conference on Retroviruses & Opportunistic Infections.

Dr. Salazar-Austin summarized current diagnostics for pediatric TB and reviewed options for the prevention and treatment of TB in CLHIV and HEU.
 

TB and CLHIV

Presently, TB is the most common opportunistic infection among CLHIV, and those with severe immune suppression have a fivefold greater risk of TB disease. While antiretroviral therapy (ART) is highly protective against TB disease in CLHIV, only about 50% of eligible children receive ART.

Dr. Salazar-Austin explained that many individuals with TB/HIV coinfection are unaware of their coinfection and not receiving treatment. Despite recommendations, TB preventive therapy is poorly implemented in CLHIV, especially in high-burden settings.
 

Pediatric TB diagnosis

Smear microscopy, culture, and Xpert MTB/RIF Ultra are the main diagnostic modalities for pediatric TB. The Xpert MTB/RIF test is an automated PCR-based assay that simultaneously and rapidly detects Mycobacterium tuberculosis complex and resistance to rifampin. The test is currently recommended by the World Health Organization as the initial diagnostic method for presumptive TB cases in both adults and children.

However, under optimal conditions, only 40% of TB cases will be detected. This is in part due to limited implementation of sputum collection procedures, but recent evidence has shown that collection of multiple specimens improves sensitivity for both culture and Xpert MTB/RIF Ultra across all specimen types, Dr. Salazar-Austin explained.

In 2020, the WHO endorsed the use of stool samples for the diagnosis of pediatric pulmonary TB. Stool Xpert is an emerging alternative, noninvasive method for ruling in pediatric TB disease, and has shown sensitivity and specificity similar to that of Xpert MTB/RIF Ultra.

“TB diagnostics have limited sensitivity in children, and efforts are ongoing to maximize current diagnostics, but new diagnostics are needed,” said Dr. Salazar-Austin.
 

Pediatric TB treatment

Despite the high frequency of TB as an opportunistic infection in CLHIV, current data on co-treatment strategies are limited.

Dolutegravir-based regimens are the preferred first-line regimen for CLHIV. In June 2020, the Food and Drug Administration approved the dispersible dolutegravir tablet, and it is expected to become widely available in 2021.

In children with TB/HIV coinfection who receive dolutegravir and rifampicin, dolutegravir is typically dosed twice daily because of a known drug interaction, based on data from the ODYSSEY study. The WHO recommendations for treatment of pediatric TB/HIV coinfection were recently updated to reflect twice-daily dosing of dolutegravir.

Despite these new recommendations, data are currently limited, and observational pharmacokinetic studies evaluating twice daily dolutegravir with TB treatment in young children are needed.

“More work is needed to evaluate the drug-drug interactions and proper dosing of rifamycins with dolutegravir for the treatment and prevention of TB in CLHIV,” Dr. Salazar-Austin said.

Based on data from TBTC Study 31/ACTG A5349, high-dose rifapentine (a rifamycin) with moxifloxacin (a fluoroquinolone) was noninferior to rifapentine alone in newly diagnosed, culture positive, drug-susceptible TB in children 12 years and older.

Whether rifapentine and moxifloxacin (RPT-Mox) can be used in children under 12 years remains unknown, but future studies may help answer this question, Dr. Salazar-Austin noted. The FDA has restricted the use of fluoroquinolones in children because of a possible effect on cartilage development, she explained.

Furthermore, recent data from the SHINE trial suggested that shortened treatment regimens may hold promise for children with TB.

“While shortened TB treatment regimens hold promise, much work needs to be done in children to implement RPT-Mox, but the results from SHINE can be implemented rapidly,” Dr. Salazar-Austin said.

Dr. Salazar-Austin disclosed no conflicts of interest. The presentation was funded by NICHD, UNITAID, Fogarty Institute, and the IMPAACT network.

Despite recent advances in the diagnosis, treatment, and prevention of pediatric tuberculosis in children living with HIV (CLHIV) and HIV-exposed uninfected children (HEU), several unmet needs remain, including studies evaluating the feasibility of shortened TB treatment regimens.

“Children living with HIV contribute disproportionately to pediatric TB mortality rates, accounting for 16% of child TB deaths, and many cases are underdiagnosed and underreported,” said Nicole Salazar-Austin, MD, of Johns Hopkins University in Baltimore. She provided an update on pediatric TB prevention and treatment during an educational symposium at this year’s virtual Conference on Retroviruses & Opportunistic Infections.

Dr. Salazar-Austin summarized current diagnostics for pediatric TB and reviewed options for the prevention and treatment of TB in CLHIV and HEU.
 

TB and CLHIV

Presently, TB is the most common opportunistic infection among CLHIV, and those with severe immune suppression have a fivefold greater risk of TB disease. While antiretroviral therapy (ART) is highly protective against TB disease in CLHIV, only about 50% of eligible children receive ART.

Dr. Salazar-Austin explained that many individuals with TB/HIV coinfection are unaware of their coinfection and not receiving treatment. Despite recommendations, TB preventive therapy is poorly implemented in CLHIV, especially in high-burden settings.
 

Pediatric TB diagnosis

Smear microscopy, culture, and Xpert MTB/RIF Ultra are the main diagnostic modalities for pediatric TB. The Xpert MTB/RIF test is an automated PCR-based assay that simultaneously and rapidly detects Mycobacterium tuberculosis complex and resistance to rifampin. The test is currently recommended by the World Health Organization as the initial diagnostic method for presumptive TB cases in both adults and children.

However, under optimal conditions, only 40% of TB cases will be detected. This is in part due to limited implementation of sputum collection procedures, but recent evidence has shown that collection of multiple specimens improves sensitivity for both culture and Xpert MTB/RIF Ultra across all specimen types, Dr. Salazar-Austin explained.

In 2020, the WHO endorsed the use of stool samples for the diagnosis of pediatric pulmonary TB. Stool Xpert is an emerging alternative, noninvasive method for ruling in pediatric TB disease, and has shown sensitivity and specificity similar to that of Xpert MTB/RIF Ultra.

“TB diagnostics have limited sensitivity in children, and efforts are ongoing to maximize current diagnostics, but new diagnostics are needed,” said Dr. Salazar-Austin.
 

Pediatric TB treatment

Despite the high frequency of TB as an opportunistic infection in CLHIV, current data on co-treatment strategies are limited.

Dolutegravir-based regimens are the preferred first-line regimen for CLHIV. In June 2020, the Food and Drug Administration approved the dispersible dolutegravir tablet, and it is expected to become widely available in 2021.

In children with TB/HIV coinfection who receive dolutegravir and rifampicin, dolutegravir is typically dosed twice daily because of a known drug interaction, based on data from the ODYSSEY study. The WHO recommendations for treatment of pediatric TB/HIV coinfection were recently updated to reflect twice-daily dosing of dolutegravir.

Despite these new recommendations, data are currently limited, and observational pharmacokinetic studies evaluating twice daily dolutegravir with TB treatment in young children are needed.

“More work is needed to evaluate the drug-drug interactions and proper dosing of rifamycins with dolutegravir for the treatment and prevention of TB in CLHIV,” Dr. Salazar-Austin said.

Based on data from TBTC Study 31/ACTG A5349, high-dose rifapentine (a rifamycin) with moxifloxacin (a fluoroquinolone) was noninferior to rifapentine alone in newly diagnosed, culture positive, drug-susceptible TB in children 12 years and older.

Whether rifapentine and moxifloxacin (RPT-Mox) can be used in children under 12 years remains unknown, but future studies may help answer this question, Dr. Salazar-Austin noted. The FDA has restricted the use of fluoroquinolones in children because of a possible effect on cartilage development, she explained.

Furthermore, recent data from the SHINE trial suggested that shortened treatment regimens may hold promise for children with TB.

“While shortened TB treatment regimens hold promise, much work needs to be done in children to implement RPT-Mox, but the results from SHINE can be implemented rapidly,” Dr. Salazar-Austin said.

Dr. Salazar-Austin disclosed no conflicts of interest. The presentation was funded by NICHD, UNITAID, Fogarty Institute, and the IMPAACT network.

Long-acting injectable (LAI) drug formulations represent a promising new strategy for the prevention and treatment of tuberculosis in women and children, according to an online presentation at the Conference on Retroviruses & Opportunistic Infections, held virtually.

“As a delivery strategy, LAIs hold the potential to unlock a vast chemical space of lipophilic compounds with very potent anti-TB activity that would otherwise not be developed due to poor predicted oral bioavailability,” explained presenter Eric Nuermberger, MD.

He summarized current preventive treatment options for TB and reviewed the potential impact of LAI formulations on TB therapy. In addition, he identified key challenges for future LAI development and proposed a new development path for clinical implementation.
 

Current TB preventive therapies

Despite widespread availability, the uptake of TB preventive therapy is poor and currently lags behind global targets. One key barrier to widespread uptake is the long duration of treatment, which may hinder patient adherence to therapy.

While shorter preventive regimens, such as 1 month of daily isoniazid plus rifapentine, show similar efficacy and higher completion rates, further shortening of therapy and reducing clinic visits are the most direct methods to increase adherence and treatment completion rates, Dr. Nuermberger said.
 

LAI drugs

LAI drug formulations allow for slow release of suitable drugs from a depot injected subcutaneously or intramuscularly.

The goal of LAI formulations is to free patients from the daily burden of oral administration. Other potential benefits include better adherence and efficacy, drug exposure, and the potential to overcome intrinsic poor oral bioavailability by bypassing the GI tract entirely.

Potential indications for LAIs include treatment of latent tuberculosis infection (LTBI), and as continuous therapy in people living with HIV in high-burden settings. There is also potential for treating younger children, such as household contacts, who have difficulty taking oral medications.

“We’ve already seen LAIs revolutionize other areas, such as psychiatry and contraception, and we appear to have another revolution in HIV prevention and treatment,” Dr. Nuermberger explained.

Not all existing TB drugs are suitable for LAI formulations, but drugs such as rifapentine, rifabutin, delamanid, and bedaquiline, show more promise than isoniazid or rifampin because of their physiochemical composition. Of all, bedaquiline may offer the best profile for LAI formulation, Dr. Nuermberger said.

Early proof-of-concept in vivo studies have shown potential use of LAI bedaquiline for TB prevention in both drug-sensitive and drug-resistant TB contacts. Translational PK modeling and simulation predicted that a 1-g intramuscular injection of LAI bedaquiline could maintain therapeutic plasma concentrations in humans for greater than 1 month.

Dr. Nuermberger noted that novel diarylquinoline-based therapies, currently in phase 1 studies, may be even better candidates for LAI-based TB preventive therapy. Early data suggests these compounds may be 10-20 times more potent and have a lower CV risk profile than that of bedaquiline.
 

Considerations for development and implementation

“Despite the promising potential of long-acting injectables for TB, we are still in the very early stages,” said Dr. Nuermberger.

Ensuring and optimizing acceptance of LAI formulations, especially in at-risk populations, will be very important, he explained. Early involvement of children and pregnant women in studies of who may benefit most from LAI drugs will also be essential.

Other important considerations include cost-effectiveness, particularly in at-risk and vulnerable populations. Furthermore, new dedicated research and development programs are needed to continue to develop more drug candidates suitable for LAI.

“Long-acting formulations hold enormous promise to be transformative for combating TB, through simplification of delivery and overcoming issues of adherence that can compromise success of current interventions,” said Andrew Owen, PhD, of the University of Liverpool (England).

“The ability to deliver an entire course of drug in a single visit promises to ensure missed doses don’t compromise outcomes or place unnecessary selective pressure in favor of drug resistance,” Dr. Owen said.

“Recent studies showing the value of one-month oral treatment regimens for LTBI make long-acting formulations seem more realistic and drugs such as long-acting bedaquiline put a one-shot regimen within reach,” Charles W. Flexner, MD, of Johns Hopkins University, Baltimore, said in an interview.

While no LAIs have been approved for TB, Dr. Nuermberger was optimistic that the recent success of LAI formulations for HIV treatment and prevention will catalyze further efforts in the TB landscape.

Dr. Nuermberger disclosed research support from Janssen Pharmaceuticals, TB Alliance, and the Gates Medical Research Institute. The presentation was sponsored by Janssen Pharmaceuticals, Johns Hopkins CFAR, NIH, Unitaid, and the TB Alliance.

Long-acting injectable (LAI) drug formulations represent a promising new strategy for the prevention and treatment of tuberculosis in women and children, according to an online presentation at the Conference on Retroviruses & Opportunistic Infections, held virtually.

“As a delivery strategy, LAIs hold the potential to unlock a vast chemical space of lipophilic compounds with very potent anti-TB activity that would otherwise not be developed due to poor predicted oral bioavailability,” explained presenter Eric Nuermberger, MD.

He summarized current preventive treatment options for TB and reviewed the potential impact of LAI formulations on TB therapy. In addition, he identified key challenges for future LAI development and proposed a new development path for clinical implementation.
 

Current TB preventive therapies

Despite widespread availability, the uptake of TB preventive therapy is poor and currently lags behind global targets. One key barrier to widespread uptake is the long duration of treatment, which may hinder patient adherence to therapy.

While shorter preventive regimens, such as 1 month of daily isoniazid plus rifapentine, show similar efficacy and higher completion rates, further shortening of therapy and reducing clinic visits are the most direct methods to increase adherence and treatment completion rates, Dr. Nuermberger said.
 

LAI drugs

LAI drug formulations allow for slow release of suitable drugs from a depot injected subcutaneously or intramuscularly.

The goal of LAI formulations is to free patients from the daily burden of oral administration. Other potential benefits include better adherence and efficacy, drug exposure, and the potential to overcome intrinsic poor oral bioavailability by bypassing the GI tract entirely.

Potential indications for LAIs include treatment of latent tuberculosis infection (LTBI), and as continuous therapy in people living with HIV in high-burden settings. There is also potential for treating younger children, such as household contacts, who have difficulty taking oral medications.

“We’ve already seen LAIs revolutionize other areas, such as psychiatry and contraception, and we appear to have another revolution in HIV prevention and treatment,” Dr. Nuermberger explained.

Not all existing TB drugs are suitable for LAI formulations, but drugs such as rifapentine, rifabutin, delamanid, and bedaquiline, show more promise than isoniazid or rifampin because of their physiochemical composition. Of all, bedaquiline may offer the best profile for LAI formulation, Dr. Nuermberger said.

Early proof-of-concept in vivo studies have shown potential use of LAI bedaquiline for TB prevention in both drug-sensitive and drug-resistant TB contacts. Translational PK modeling and simulation predicted that a 1-g intramuscular injection of LAI bedaquiline could maintain therapeutic plasma concentrations in humans for greater than 1 month.

Dr. Nuermberger noted that novel diarylquinoline-based therapies, currently in phase 1 studies, may be even better candidates for LAI-based TB preventive therapy. Early data suggests these compounds may be 10-20 times more potent and have a lower CV risk profile than that of bedaquiline.
 

Considerations for development and implementation

“Despite the promising potential of long-acting injectables for TB, we are still in the very early stages,” said Dr. Nuermberger.

Ensuring and optimizing acceptance of LAI formulations, especially in at-risk populations, will be very important, he explained. Early involvement of children and pregnant women in studies of who may benefit most from LAI drugs will also be essential.

Other important considerations include cost-effectiveness, particularly in at-risk and vulnerable populations. Furthermore, new dedicated research and development programs are needed to continue to develop more drug candidates suitable for LAI.

“Long-acting formulations hold enormous promise to be transformative for combating TB, through simplification of delivery and overcoming issues of adherence that can compromise success of current interventions,” said Andrew Owen, PhD, of the University of Liverpool (England).

“The ability to deliver an entire course of drug in a single visit promises to ensure missed doses don’t compromise outcomes or place unnecessary selective pressure in favor of drug resistance,” Dr. Owen said.

“Recent studies showing the value of one-month oral treatment regimens for LTBI make long-acting formulations seem more realistic and drugs such as long-acting bedaquiline put a one-shot regimen within reach,” Charles W. Flexner, MD, of Johns Hopkins University, Baltimore, said in an interview.

While no LAIs have been approved for TB, Dr. Nuermberger was optimistic that the recent success of LAI formulations for HIV treatment and prevention will catalyze further efforts in the TB landscape.

Dr. Nuermberger disclosed research support from Janssen Pharmaceuticals, TB Alliance, and the Gates Medical Research Institute. The presentation was sponsored by Janssen Pharmaceuticals, Johns Hopkins CFAR, NIH, Unitaid, and the TB Alliance.

Long-acting injectable (LAI) drug formulations represent a promising new strategy for the prevention and treatment of tuberculosis in women and children, according to an online presentation at the Conference on Retroviruses & Opportunistic Infections, held virtually.

“As a delivery strategy, LAIs hold the potential to unlock a vast chemical space of lipophilic compounds with very potent anti-TB activity that would otherwise not be developed due to poor predicted oral bioavailability,” explained presenter Eric Nuermberger, MD.

He summarized current preventive treatment options for TB and reviewed the potential impact of LAI formulations on TB therapy. In addition, he identified key challenges for future LAI development and proposed a new development path for clinical implementation.
 

Current TB preventive therapies

Despite widespread availability, the uptake of TB preventive therapy is poor and currently lags behind global targets. One key barrier to widespread uptake is the long duration of treatment, which may hinder patient adherence to therapy.

While shorter preventive regimens, such as 1 month of daily isoniazid plus rifapentine, show similar efficacy and higher completion rates, further shortening of therapy and reducing clinic visits are the most direct methods to increase adherence and treatment completion rates, Dr. Nuermberger said.
 

LAI drugs

LAI drug formulations allow for slow release of suitable drugs from a depot injected subcutaneously or intramuscularly.

The goal of LAI formulations is to free patients from the daily burden of oral administration. Other potential benefits include better adherence and efficacy, drug exposure, and the potential to overcome intrinsic poor oral bioavailability by bypassing the GI tract entirely.

Potential indications for LAIs include treatment of latent tuberculosis infection (LTBI), and as continuous therapy in people living with HIV in high-burden settings. There is also potential for treating younger children, such as household contacts, who have difficulty taking oral medications.

“We’ve already seen LAIs revolutionize other areas, such as psychiatry and contraception, and we appear to have another revolution in HIV prevention and treatment,” Dr. Nuermberger explained.

Not all existing TB drugs are suitable for LAI formulations, but drugs such as rifapentine, rifabutin, delamanid, and bedaquiline, show more promise than isoniazid or rifampin because of their physiochemical composition. Of all, bedaquiline may offer the best profile for LAI formulation, Dr. Nuermberger said.

Early proof-of-concept in vivo studies have shown potential use of LAI bedaquiline for TB prevention in both drug-sensitive and drug-resistant TB contacts. Translational PK modeling and simulation predicted that a 1-g intramuscular injection of LAI bedaquiline could maintain therapeutic plasma concentrations in humans for greater than 1 month.

Dr. Nuermberger noted that novel diarylquinoline-based therapies, currently in phase 1 studies, may be even better candidates for LAI-based TB preventive therapy. Early data suggests these compounds may be 10-20 times more potent and have a lower CV risk profile than that of bedaquiline.
 

Considerations for development and implementation

“Despite the promising potential of long-acting injectables for TB, we are still in the very early stages,” said Dr. Nuermberger.

Ensuring and optimizing acceptance of LAI formulations, especially in at-risk populations, will be very important, he explained. Early involvement of children and pregnant women in studies of who may benefit most from LAI drugs will also be essential.

Other important considerations include cost-effectiveness, particularly in at-risk and vulnerable populations. Furthermore, new dedicated research and development programs are needed to continue to develop more drug candidates suitable for LAI.

“Long-acting formulations hold enormous promise to be transformative for combating TB, through simplification of delivery and overcoming issues of adherence that can compromise success of current interventions,” said Andrew Owen, PhD, of the University of Liverpool (England).

“The ability to deliver an entire course of drug in a single visit promises to ensure missed doses don’t compromise outcomes or place unnecessary selective pressure in favor of drug resistance,” Dr. Owen said.

“Recent studies showing the value of one-month oral treatment regimens for LTBI make long-acting formulations seem more realistic and drugs such as long-acting bedaquiline put a one-shot regimen within reach,” Charles W. Flexner, MD, of Johns Hopkins University, Baltimore, said in an interview.

While no LAIs have been approved for TB, Dr. Nuermberger was optimistic that the recent success of LAI formulations for HIV treatment and prevention will catalyze further efforts in the TB landscape.

Dr. Nuermberger disclosed research support from Janssen Pharmaceuticals, TB Alliance, and the Gates Medical Research Institute. The presentation was sponsored by Janssen Pharmaceuticals, Johns Hopkins CFAR, NIH, Unitaid, and the TB Alliance.

Another coronavirus surge may be on the way in the United States as daily COVID-19 cases continue to plateau around 60,000, states begin to lift restrictions, and people embark on spring break trips this week, according to CNN.

Outbreaks will likely stem from the B.1.1.7 variant, which was first identified in the United Kingdom, and gain momentum during the next 6-14 weeks.

“Four weeks ago, the B.1.1.7 variant made up about 1%-4% of the virus that we were seeing in communities across the country. Today it’s up to 30%-40%,” Michael Osterholm, PhD, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, Minneapolis, told NBC’s Meet the Press on March 7.

Dr. Osterholm compared the current situation with the “eye of the hurricane,” where the skies appear clear but more storms are on the way. Across Europe, 27 countries are seeing significant B.1.1.7 case increases, and 10 are getting hit hard, he said.

“What we’ve seen in Europe, when we hit that 50% mark, you see cases surge,” he said. “So right now, we do have to keep America as safe as we can from this virus by not letting up on any of the public health measures we’ve taken.”

In January, the CDC warned that B.1.1.7 variant cases would increase in 2021 and become the dominant variant in the country by this month. The United States has now reported more than 3,000 cases across 46 states, according to the latest CDC tally updated on March 7. More than 600 cases have been found in Florida, followed by more than 400 in Michigan.

The CDC has said the tally doesn’t represent the total number of B.1.1.7 cases in the United States, only the ones that have been identified by analyzing samples through genomic sequencing.

“Where it has hit in the U.K. and now elsewhere in Europe, it has been catastrophic,” Celine Gounder, MD, an infectious disease specialist with New York University Langone Health, told CNN on March 7.

The variant is more transmissible than the original novel coronavirus, and the cases in the United States are “increasing exponentially,” she said.

“It has driven up rates of hospitalizations and deaths and it’s very difficult to control,” Dr. Gounder said.

Vaccination numbers aren’t yet high enough to stop the predicted surge, she added. The United States has shipped more than 116 million vaccine doses, according to the latest CDC update on March 7. Nearly 59 million people have received at least one dose, and 30.6 million people have received two vaccine doses. About 9% of the U.S. population has been fully vaccinated.

States shouldn’t ease restrictions until the vaccination numbers are much higher and daily COVID-19 cases fall below 10,000 – and maybe “considerably less than that,” Anthony Fauci, MD, director of the National Institute of Allergy and Infectious Diseases, told CNN on March 4.

Several states have already begun to lift COVID-19 safety protocols, with Texas and Mississippi removing mask mandates last week. Businesses in Texas will be able to reopen at full capacity on March 10. For now, public health officials are urging Americans to continue to wear masks, avoid crowds, and follow social distancing guidelines as vaccines roll out across the country.

“This is sort of like we’ve been running this really long marathon, and we’re 100 yards from the finish line and we sit down and we give up,” Dr. Gounder told CNN on Sunday. ‘We’re almost there, we just need to give ourselves a bit more time to get a larger proportion of the population covered with vaccines.”

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

Another coronavirus surge may be on the way in the United States as daily COVID-19 cases continue to plateau around 60,000, states begin to lift restrictions, and people embark on spring break trips this week, according to CNN.

Outbreaks will likely stem from the B.1.1.7 variant, which was first identified in the United Kingdom, and gain momentum during the next 6-14 weeks.

“Four weeks ago, the B.1.1.7 variant made up about 1%-4% of the virus that we were seeing in communities across the country. Today it’s up to 30%-40%,” Michael Osterholm, PhD, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, Minneapolis, told NBC’s Meet the Press on March 7.

Dr. Osterholm compared the current situation with the “eye of the hurricane,” where the skies appear clear but more storms are on the way. Across Europe, 27 countries are seeing significant B.1.1.7 case increases, and 10 are getting hit hard, he said.

“What we’ve seen in Europe, when we hit that 50% mark, you see cases surge,” he said. “So right now, we do have to keep America as safe as we can from this virus by not letting up on any of the public health measures we’ve taken.”

In January, the CDC warned that B.1.1.7 variant cases would increase in 2021 and become the dominant variant in the country by this month. The United States has now reported more than 3,000 cases across 46 states, according to the latest CDC tally updated on March 7. More than 600 cases have been found in Florida, followed by more than 400 in Michigan.

The CDC has said the tally doesn’t represent the total number of B.1.1.7 cases in the United States, only the ones that have been identified by analyzing samples through genomic sequencing.

“Where it has hit in the U.K. and now elsewhere in Europe, it has been catastrophic,” Celine Gounder, MD, an infectious disease specialist with New York University Langone Health, told CNN on March 7.

The variant is more transmissible than the original novel coronavirus, and the cases in the United States are “increasing exponentially,” she said.

“It has driven up rates of hospitalizations and deaths and it’s very difficult to control,” Dr. Gounder said.

Vaccination numbers aren’t yet high enough to stop the predicted surge, she added. The United States has shipped more than 116 million vaccine doses, according to the latest CDC update on March 7. Nearly 59 million people have received at least one dose, and 30.6 million people have received two vaccine doses. About 9% of the U.S. population has been fully vaccinated.

States shouldn’t ease restrictions until the vaccination numbers are much higher and daily COVID-19 cases fall below 10,000 – and maybe “considerably less than that,” Anthony Fauci, MD, director of the National Institute of Allergy and Infectious Diseases, told CNN on March 4.

Several states have already begun to lift COVID-19 safety protocols, with Texas and Mississippi removing mask mandates last week. Businesses in Texas will be able to reopen at full capacity on March 10. For now, public health officials are urging Americans to continue to wear masks, avoid crowds, and follow social distancing guidelines as vaccines roll out across the country.

“This is sort of like we’ve been running this really long marathon, and we’re 100 yards from the finish line and we sit down and we give up,” Dr. Gounder told CNN on Sunday. ‘We’re almost there, we just need to give ourselves a bit more time to get a larger proportion of the population covered with vaccines.”

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

Another coronavirus surge may be on the way in the United States as daily COVID-19 cases continue to plateau around 60,000, states begin to lift restrictions, and people embark on spring break trips this week, according to CNN.

Outbreaks will likely stem from the B.1.1.7 variant, which was first identified in the United Kingdom, and gain momentum during the next 6-14 weeks.

“Four weeks ago, the B.1.1.7 variant made up about 1%-4% of the virus that we were seeing in communities across the country. Today it’s up to 30%-40%,” Michael Osterholm, PhD, director of the Center for Infectious Disease Research and Policy at the University of Minnesota, Minneapolis, told NBC’s Meet the Press on March 7.

Dr. Osterholm compared the current situation with the “eye of the hurricane,” where the skies appear clear but more storms are on the way. Across Europe, 27 countries are seeing significant B.1.1.7 case increases, and 10 are getting hit hard, he said.

“What we’ve seen in Europe, when we hit that 50% mark, you see cases surge,” he said. “So right now, we do have to keep America as safe as we can from this virus by not letting up on any of the public health measures we’ve taken.”

In January, the CDC warned that B.1.1.7 variant cases would increase in 2021 and become the dominant variant in the country by this month. The United States has now reported more than 3,000 cases across 46 states, according to the latest CDC tally updated on March 7. More than 600 cases have been found in Florida, followed by more than 400 in Michigan.

The CDC has said the tally doesn’t represent the total number of B.1.1.7 cases in the United States, only the ones that have been identified by analyzing samples through genomic sequencing.

“Where it has hit in the U.K. and now elsewhere in Europe, it has been catastrophic,” Celine Gounder, MD, an infectious disease specialist with New York University Langone Health, told CNN on March 7.

The variant is more transmissible than the original novel coronavirus, and the cases in the United States are “increasing exponentially,” she said.

“It has driven up rates of hospitalizations and deaths and it’s very difficult to control,” Dr. Gounder said.

Vaccination numbers aren’t yet high enough to stop the predicted surge, she added. The United States has shipped more than 116 million vaccine doses, according to the latest CDC update on March 7. Nearly 59 million people have received at least one dose, and 30.6 million people have received two vaccine doses. About 9% of the U.S. population has been fully vaccinated.

States shouldn’t ease restrictions until the vaccination numbers are much higher and daily COVID-19 cases fall below 10,000 – and maybe “considerably less than that,” Anthony Fauci, MD, director of the National Institute of Allergy and Infectious Diseases, told CNN on March 4.

Several states have already begun to lift COVID-19 safety protocols, with Texas and Mississippi removing mask mandates last week. Businesses in Texas will be able to reopen at full capacity on March 10. For now, public health officials are urging Americans to continue to wear masks, avoid crowds, and follow social distancing guidelines as vaccines roll out across the country.

“This is sort of like we’ve been running this really long marathon, and we’re 100 yards from the finish line and we sit down and we give up,” Dr. Gounder told CNN on Sunday. ‘We’re almost there, we just need to give ourselves a bit more time to get a larger proportion of the population covered with vaccines.”

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

A single pill of the investigational drug molnupiravir taken twice a day for 5 days eliminated SARS-CoV-2 from the nasopharynx of 49 participants.

That led Carlos del Rio, MD, distinguished professor of medicine at Emory University, Atlanta, to suggest a future in which a drug like molnupiravir could be taken in the first few days of symptoms to prevent severe disease, similar to Tamiflu for influenza.

“I think it’s critically important,” he said of the data. Emory University was involved in the trial of molnupiravir but Dr. del Rio was not part of that team. “This drug offers the first antiviral oral drug that then could be used in an outpatient setting.”

Still, Dr. del Rio said it’s too soon to call this particular drug the breakthrough clinicians need to keep people out of the ICU. “It has the potential to be practice changing; it’s not practice changing at the moment.”

Wendy Painter, MD, of Ridgeback Biotherapeutics, who presented the data at the Conference on Retroviruses and Opportunistic Infections, agreed. While the data are promising, “We will need to see if people get better from actual illness” to assess the real value of the drug in clinical care.

“That’s a phase 3 objective we’ll need to prove,” she said in an interview.

Phase 2/3 efficacy and safety studies of the drug are now underway in hospitalized and nonhospitalized patients.

In a brief prerecorded presentation of the data, Dr. Painter laid out what researchers know so far: Preclinical studies suggest that molnupiravir is effective against a number of viruses, including coronaviruses and specifically SARS-CoV-2. It prevents a virus from replicating by inducing viral error catastrophe (Proc Natl Acad Sci U S A. 2002 Oct 15;99[21]:13374-6) – essentially overloading the virus with replication and mutation until the virus burns itself out and can’t produce replicable copies.

In this phase 2a, randomized, double-blind, controlled trial, researchers recruited 202 adults who were treated at an outpatient clinic with fever or other symptoms of a respiratory virus and confirmed SARS-CoV-2 infection by day 4. Participants were randomly assigned to three different groups: 200 mg of molnupiravir, 400 mg, or 800 mg. The 200-mg arm was matched 1:1 with a placebo-controlled group, and the other two groups had three participants in the active group for every one control.

Participants took the pills twice daily for 5 days, and then were followed for a total of 28 days to monitor for complications or adverse events. At days 3, 5, 7, 14, and 28, researchers also took nasopharyngeal swabs for polymerase chain reaction tests, to sequence the virus, and to grow cultures of SARS-CoV-2 to see if the virus that’s present is actually capable of infecting others.

Notably, the pills do not have to be refrigerated at any point in the process, alleviating the cold-chain challenges that have plagued vaccines.

“There’s an urgent need for an easily produced, transported, stored, and administered antiviral drug against SARS-CoV-2,” Dr. Painter said.

Of the 202 people recruited, 182 had swabs that could be evaluated, of which 78 showed infection at baseline. The results are based on labs of those 78 participants.

By day 3, 28% of patients in the placebo arm had SARS-CoV-2 in their nasopharynx, compared with 20.4% of patients receiving any dose of molnupiravir. But by day 5, none of the participants receiving the active drug had evidence of SARS-CoV-2 in their nasopharynx. In comparison, 24% of people in the placebo arm still had detectable virus.

Halfway through the treatment course, differences in the presence of infectious virus were already evident. By day 3 of the 5-day course, 36.4% of participants in the 200-mg group had detectable virus in the nasopharynx, compared with 21% in the 400-mg group and just 12.5% in the 800-mg group. And although the reduction in SARS-CoV-2 was noticeable in the 200-mg and the 400-mg arms, it was only statistically significant in the 800-mg arm.

In contrast, by the end of the 5 days in the placebo groups, infectious virus varied from 18.2% in the 200-mg placebo group to 30% in the 800-mg group. This points out the variability of the disease course of SARS-CoV-2.

“You just don’t know” which infections will lead to serious disease, Dr. Painter said in an interview. “And don’t you wish we did?”

Seven participants discontinued treatment, though only four experienced adverse events. Three of those discontinued the trial because of adverse events. The study is still blinded, so it’s unclear what those events were, but Dr. Painter said that they were not thought to be related to the study drug.

The bottom line, said Dr. Painter, was that people treated with molnupiravir had starkly different outcomes in lab measures during the study.

“An average of 10 days after symptom onset, 24% of placebo patients remained culture positive” for SARS-CoV-2 – meaning there wasn’t just virus in the nasopharynx, but it was capable of replicating, Dr. Painter said. “In contrast, no infectious virus could be recovered at study day 5 in any molnupiravir-treated patients.”

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

A single pill of the investigational drug molnupiravir taken twice a day for 5 days eliminated SARS-CoV-2 from the nasopharynx of 49 participants.

That led Carlos del Rio, MD, distinguished professor of medicine at Emory University, Atlanta, to suggest a future in which a drug like molnupiravir could be taken in the first few days of symptoms to prevent severe disease, similar to Tamiflu for influenza.

“I think it’s critically important,” he said of the data. Emory University was involved in the trial of molnupiravir but Dr. del Rio was not part of that team. “This drug offers the first antiviral oral drug that then could be used in an outpatient setting.”

Still, Dr. del Rio said it’s too soon to call this particular drug the breakthrough clinicians need to keep people out of the ICU. “It has the potential to be practice changing; it’s not practice changing at the moment.”

Wendy Painter, MD, of Ridgeback Biotherapeutics, who presented the data at the Conference on Retroviruses and Opportunistic Infections, agreed. While the data are promising, “We will need to see if people get better from actual illness” to assess the real value of the drug in clinical care.

“That’s a phase 3 objective we’ll need to prove,” she said in an interview.

Phase 2/3 efficacy and safety studies of the drug are now underway in hospitalized and nonhospitalized patients.

In a brief prerecorded presentation of the data, Dr. Painter laid out what researchers know so far: Preclinical studies suggest that molnupiravir is effective against a number of viruses, including coronaviruses and specifically SARS-CoV-2. It prevents a virus from replicating by inducing viral error catastrophe (Proc Natl Acad Sci U S A. 2002 Oct 15;99[21]:13374-6) – essentially overloading the virus with replication and mutation until the virus burns itself out and can’t produce replicable copies.

In this phase 2a, randomized, double-blind, controlled trial, researchers recruited 202 adults who were treated at an outpatient clinic with fever or other symptoms of a respiratory virus and confirmed SARS-CoV-2 infection by day 4. Participants were randomly assigned to three different groups: 200 mg of molnupiravir, 400 mg, or 800 mg. The 200-mg arm was matched 1:1 with a placebo-controlled group, and the other two groups had three participants in the active group for every one control.

Participants took the pills twice daily for 5 days, and then were followed for a total of 28 days to monitor for complications or adverse events. At days 3, 5, 7, 14, and 28, researchers also took nasopharyngeal swabs for polymerase chain reaction tests, to sequence the virus, and to grow cultures of SARS-CoV-2 to see if the virus that’s present is actually capable of infecting others.

Notably, the pills do not have to be refrigerated at any point in the process, alleviating the cold-chain challenges that have plagued vaccines.

“There’s an urgent need for an easily produced, transported, stored, and administered antiviral drug against SARS-CoV-2,” Dr. Painter said.

Of the 202 people recruited, 182 had swabs that could be evaluated, of which 78 showed infection at baseline. The results are based on labs of those 78 participants.

By day 3, 28% of patients in the placebo arm had SARS-CoV-2 in their nasopharynx, compared with 20.4% of patients receiving any dose of molnupiravir. But by day 5, none of the participants receiving the active drug had evidence of SARS-CoV-2 in their nasopharynx. In comparison, 24% of people in the placebo arm still had detectable virus.

Halfway through the treatment course, differences in the presence of infectious virus were already evident. By day 3 of the 5-day course, 36.4% of participants in the 200-mg group had detectable virus in the nasopharynx, compared with 21% in the 400-mg group and just 12.5% in the 800-mg group. And although the reduction in SARS-CoV-2 was noticeable in the 200-mg and the 400-mg arms, it was only statistically significant in the 800-mg arm.

In contrast, by the end of the 5 days in the placebo groups, infectious virus varied from 18.2% in the 200-mg placebo group to 30% in the 800-mg group. This points out the variability of the disease course of SARS-CoV-2.

“You just don’t know” which infections will lead to serious disease, Dr. Painter said in an interview. “And don’t you wish we did?”

Seven participants discontinued treatment, though only four experienced adverse events. Three of those discontinued the trial because of adverse events. The study is still blinded, so it’s unclear what those events were, but Dr. Painter said that they were not thought to be related to the study drug.

The bottom line, said Dr. Painter, was that people treated with molnupiravir had starkly different outcomes in lab measures during the study.

“An average of 10 days after symptom onset, 24% of placebo patients remained culture positive” for SARS-CoV-2 – meaning there wasn’t just virus in the nasopharynx, but it was capable of replicating, Dr. Painter said. “In contrast, no infectious virus could be recovered at study day 5 in any molnupiravir-treated patients.”

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

A single pill of the investigational drug molnupiravir taken twice a day for 5 days eliminated SARS-CoV-2 from the nasopharynx of 49 participants.

That led Carlos del Rio, MD, distinguished professor of medicine at Emory University, Atlanta, to suggest a future in which a drug like molnupiravir could be taken in the first few days of symptoms to prevent severe disease, similar to Tamiflu for influenza.

“I think it’s critically important,” he said of the data. Emory University was involved in the trial of molnupiravir but Dr. del Rio was not part of that team. “This drug offers the first antiviral oral drug that then could be used in an outpatient setting.”

Still, Dr. del Rio said it’s too soon to call this particular drug the breakthrough clinicians need to keep people out of the ICU. “It has the potential to be practice changing; it’s not practice changing at the moment.”

Wendy Painter, MD, of Ridgeback Biotherapeutics, who presented the data at the Conference on Retroviruses and Opportunistic Infections, agreed. While the data are promising, “We will need to see if people get better from actual illness” to assess the real value of the drug in clinical care.

“That’s a phase 3 objective we’ll need to prove,” she said in an interview.

Phase 2/3 efficacy and safety studies of the drug are now underway in hospitalized and nonhospitalized patients.

In a brief prerecorded presentation of the data, Dr. Painter laid out what researchers know so far: Preclinical studies suggest that molnupiravir is effective against a number of viruses, including coronaviruses and specifically SARS-CoV-2. It prevents a virus from replicating by inducing viral error catastrophe (Proc Natl Acad Sci U S A. 2002 Oct 15;99[21]:13374-6) – essentially overloading the virus with replication and mutation until the virus burns itself out and can’t produce replicable copies.

In this phase 2a, randomized, double-blind, controlled trial, researchers recruited 202 adults who were treated at an outpatient clinic with fever or other symptoms of a respiratory virus and confirmed SARS-CoV-2 infection by day 4. Participants were randomly assigned to three different groups: 200 mg of molnupiravir, 400 mg, or 800 mg. The 200-mg arm was matched 1:1 with a placebo-controlled group, and the other two groups had three participants in the active group for every one control.

Participants took the pills twice daily for 5 days, and then were followed for a total of 28 days to monitor for complications or adverse events. At days 3, 5, 7, 14, and 28, researchers also took nasopharyngeal swabs for polymerase chain reaction tests, to sequence the virus, and to grow cultures of SARS-CoV-2 to see if the virus that’s present is actually capable of infecting others.

Notably, the pills do not have to be refrigerated at any point in the process, alleviating the cold-chain challenges that have plagued vaccines.

“There’s an urgent need for an easily produced, transported, stored, and administered antiviral drug against SARS-CoV-2,” Dr. Painter said.

Of the 202 people recruited, 182 had swabs that could be evaluated, of which 78 showed infection at baseline. The results are based on labs of those 78 participants.

By day 3, 28% of patients in the placebo arm had SARS-CoV-2 in their nasopharynx, compared with 20.4% of patients receiving any dose of molnupiravir. But by day 5, none of the participants receiving the active drug had evidence of SARS-CoV-2 in their nasopharynx. In comparison, 24% of people in the placebo arm still had detectable virus.

Halfway through the treatment course, differences in the presence of infectious virus were already evident. By day 3 of the 5-day course, 36.4% of participants in the 200-mg group had detectable virus in the nasopharynx, compared with 21% in the 400-mg group and just 12.5% in the 800-mg group. And although the reduction in SARS-CoV-2 was noticeable in the 200-mg and the 400-mg arms, it was only statistically significant in the 800-mg arm.

In contrast, by the end of the 5 days in the placebo groups, infectious virus varied from 18.2% in the 200-mg placebo group to 30% in the 800-mg group. This points out the variability of the disease course of SARS-CoV-2.

“You just don’t know” which infections will lead to serious disease, Dr. Painter said in an interview. “And don’t you wish we did?”

Seven participants discontinued treatment, though only four experienced adverse events. Three of those discontinued the trial because of adverse events. The study is still blinded, so it’s unclear what those events were, but Dr. Painter said that they were not thought to be related to the study drug.

The bottom line, said Dr. Painter, was that people treated with molnupiravir had starkly different outcomes in lab measures during the study.

“An average of 10 days after symptom onset, 24% of placebo patients remained culture positive” for SARS-CoV-2 – meaning there wasn’t just virus in the nasopharynx, but it was capable of replicating, Dr. Painter said. “In contrast, no infectious virus could be recovered at study day 5 in any molnupiravir-treated patients.”

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

People who are fully vaccinated against COVID-19 can safely gather unmasked and inside with nonvulnerable people who are not yet immunized, according to long-awaited guidance released by the CDC.

“Today’s action represents an important first step. It is not our final destination,” CDC Director Rochelle Walensky, MD, said March 8 at a White House briefing. “As more people get vaccinated, levels of COVID-19 infection decline in communities, and as our understanding of COVID immunity improves, we look forward to updating these recommendations to the public.”

According to the new guidance, people who are at least 2 weeks out from their last dose can:

• Visit with other fully vaccinated people indoors without wearing masks or physical distancing.
• Visit with unvaccinated people from a single household who are at low risk for severe COVID-19 disease indoors without wearing masks or physical distancing
• Avoid quarantine and testing following exposure to someone if they remain asymptomatic.

However, there are still restrictions that will remain until further data are collected. Those who are fully vaccinated must still:

• Wear masks and physically distance in public settings and around people at high risk for severe disease.
• Wear masks and physically distance when visiting unvaccinated people from more than one household.
• Avoid medium- and large-sized gatherings.
• Avoid travel.

People considered at high risk for severe disease include older adults and those with cancer, chronic kidney disease, COPD, Down syndrome, heart disease, heart failure, a weakened immune system, obesity, sickle cell disease, and type 2 diabetes. The category also includes pregnant women and smokers.

“In public spaces, fully vaccinated people should continue to follow guidance to protect themselves and others, including wearing a well-fitted mask, physical distancing (at least 6 feet), avoiding crowds, avoiding poorly ventilated spaces, covering coughs and sneezes, washing hands often, and following any applicable workplace or school guidance,” the guidance says. “Fully vaccinated people should still watch for symptoms of COVID-19, especially following an exposure to someone with suspected or confirmed COVID-19.”

Respecting travel restrictions is still crucial, Dr. Walensky said, given past surges and variants that have emerged after periods of increased travel.

"We would like to give the opportunity for vaccinated grandparents to visit children and grandchildren who are healthy and local,” Dr. Walensky said.

But, she said, “It’s important to realize as we’re working through this that over 90% of the population is not yet vaccinated.”

For now, there are not enough data on transmission rates from those who are vaccinated to the rest of the public. However, Anthony Fauci, MD, said at a briefing last month that preliminary data are “pointing in a very favorable direction.”

Studies from Spain and Israel published last month showed the amount of viral load – or the amount of the COVID-19 virus in someone’s body – is significantly lower if someone gets infected after they’ve been vaccinated, compared with people who get infected and didn’t have the vaccine. Lower viral load means much lower chances of passing the virus to someone else, Dr. Fauci said.

“The science of COVID-19 is complex,” Dr. Walensky said, “and our understanding of it continues to evolve.”

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

People who are fully vaccinated against COVID-19 can safely gather unmasked and inside with nonvulnerable people who are not yet immunized, according to long-awaited guidance released by the CDC.

“Today’s action represents an important first step. It is not our final destination,” CDC Director Rochelle Walensky, MD, said March 8 at a White House briefing. “As more people get vaccinated, levels of COVID-19 infection decline in communities, and as our understanding of COVID immunity improves, we look forward to updating these recommendations to the public.”

According to the new guidance, people who are at least 2 weeks out from their last dose can:

• Visit with other fully vaccinated people indoors without wearing masks or physical distancing.
• Visit with unvaccinated people from a single household who are at low risk for severe COVID-19 disease indoors without wearing masks or physical distancing
• Avoid quarantine and testing following exposure to someone if they remain asymptomatic.

However, there are still restrictions that will remain until further data are collected. Those who are fully vaccinated must still:

• Wear masks and physically distance in public settings and around people at high risk for severe disease.
• Wear masks and physically distance when visiting unvaccinated people from more than one household.
• Avoid medium- and large-sized gatherings.
• Avoid travel.

People considered at high risk for severe disease include older adults and those with cancer, chronic kidney disease, COPD, Down syndrome, heart disease, heart failure, a weakened immune system, obesity, sickle cell disease, and type 2 diabetes. The category also includes pregnant women and smokers.

“In public spaces, fully vaccinated people should continue to follow guidance to protect themselves and others, including wearing a well-fitted mask, physical distancing (at least 6 feet), avoiding crowds, avoiding poorly ventilated spaces, covering coughs and sneezes, washing hands often, and following any applicable workplace or school guidance,” the guidance says. “Fully vaccinated people should still watch for symptoms of COVID-19, especially following an exposure to someone with suspected or confirmed COVID-19.”

Respecting travel restrictions is still crucial, Dr. Walensky said, given past surges and variants that have emerged after periods of increased travel.

"We would like to give the opportunity for vaccinated grandparents to visit children and grandchildren who are healthy and local,” Dr. Walensky said.

But, she said, “It’s important to realize as we’re working through this that over 90% of the population is not yet vaccinated.”

For now, there are not enough data on transmission rates from those who are vaccinated to the rest of the public. However, Anthony Fauci, MD, said at a briefing last month that preliminary data are “pointing in a very favorable direction.”

Studies from Spain and Israel published last month showed the amount of viral load – or the amount of the COVID-19 virus in someone’s body – is significantly lower if someone gets infected after they’ve been vaccinated, compared with people who get infected and didn’t have the vaccine. Lower viral load means much lower chances of passing the virus to someone else, Dr. Fauci said.

“The science of COVID-19 is complex,” Dr. Walensky said, “and our understanding of it continues to evolve.”

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

People who are fully vaccinated against COVID-19 can safely gather unmasked and inside with nonvulnerable people who are not yet immunized, according to long-awaited guidance released by the CDC.

“Today’s action represents an important first step. It is not our final destination,” CDC Director Rochelle Walensky, MD, said March 8 at a White House briefing. “As more people get vaccinated, levels of COVID-19 infection decline in communities, and as our understanding of COVID immunity improves, we look forward to updating these recommendations to the public.”

According to the new guidance, people who are at least 2 weeks out from their last dose can:

• Visit with other fully vaccinated people indoors without wearing masks or physical distancing.
• Visit with unvaccinated people from a single household who are at low risk for severe COVID-19 disease indoors without wearing masks or physical distancing
• Avoid quarantine and testing following exposure to someone if they remain asymptomatic.

However, there are still restrictions that will remain until further data are collected. Those who are fully vaccinated must still:

• Wear masks and physically distance in public settings and around people at high risk for severe disease.
• Wear masks and physically distance when visiting unvaccinated people from more than one household.
• Avoid medium- and large-sized gatherings.
• Avoid travel.

People considered at high risk for severe disease include older adults and those with cancer, chronic kidney disease, COPD, Down syndrome, heart disease, heart failure, a weakened immune system, obesity, sickle cell disease, and type 2 diabetes. The category also includes pregnant women and smokers.

“In public spaces, fully vaccinated people should continue to follow guidance to protect themselves and others, including wearing a well-fitted mask, physical distancing (at least 6 feet), avoiding crowds, avoiding poorly ventilated spaces, covering coughs and sneezes, washing hands often, and following any applicable workplace or school guidance,” the guidance says. “Fully vaccinated people should still watch for symptoms of COVID-19, especially following an exposure to someone with suspected or confirmed COVID-19.”

Respecting travel restrictions is still crucial, Dr. Walensky said, given past surges and variants that have emerged after periods of increased travel.

"We would like to give the opportunity for vaccinated grandparents to visit children and grandchildren who are healthy and local,” Dr. Walensky said.

But, she said, “It’s important to realize as we’re working through this that over 90% of the population is not yet vaccinated.”

For now, there are not enough data on transmission rates from those who are vaccinated to the rest of the public. However, Anthony Fauci, MD, said at a briefing last month that preliminary data are “pointing in a very favorable direction.”

Studies from Spain and Israel published last month showed the amount of viral load – or the amount of the COVID-19 virus in someone’s body – is significantly lower if someone gets infected after they’ve been vaccinated, compared with people who get infected and didn’t have the vaccine. Lower viral load means much lower chances of passing the virus to someone else, Dr. Fauci said.

“The science of COVID-19 is complex,” Dr. Walensky said, “and our understanding of it continues to evolve.”

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

The development and worsening of overlapping asthma and chronic obstructive pulmonary disease (COPD) can be affected by pollutants found in rural and urban environments, according to a recent presentation at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

“Urban-rural-occupational air pollutants or respiratory sensitizers impact asthma and the asthma-COPD overlap features,” Jill A. Poole, MD, division chief of allergy and immunology at the University of Nebraska Medical Center, Omaha, said in her presentation.

The Global Initiative for Asthma (GINA) first outlined a syndrome in 2015 described as “persistent airflow limitation with several features usually associated with asthma and several features usually associated with COPD” and called asthma-COPD overlap syndrome. In 2017, a joint American Thoracic Society/National Heart, Lung, and Blood Institute workshop outlined knowledge gaps about asthma-COPD overlap, noting it “does not represent a single discrete disease entity.”

“This is not a single disease and should be thought of as being heterogeneous and used as a descriptive label for patients commonly seen in clinical practice,” Dr. Poole said. “Both asthma and COPD definitions are not mutually exclusive because each disease includes several phenotypes with different underlining mechanisms.” An example of how asthma-COPD overlap might present is through a patient with allergic asthma who has a history of smoking who develops airflow obstruction that isn’t fully reversible, or a patient with COPD “with high reversible airflow, obstruction, type 2 inflammation, and perhaps the presence of peripheral blood eosinophils or sputum eosinophils.”

A patient’s interaction with urban, rural, and occupational environments may additionally impact their disease, Dr. Poole explained. “The environmental factors of an urban versus rural environment may not be necessarily mutually exclusive,” she said. “It’s also important to recognize occupational exposures that can be both seen in an urban or rural environment [can] contribute to asthma-COPD overlap.”

In a study of 6,040 men and women with asthma living in Canada, 630 (10.4%) had asthma-COPD overlap, with increased air pollution raising the likelihood of developing asthma-COPD overlap (odds ratio, 2.78; 95% confidence interval, 1.62-4.78). These people experienced later onset asthma, increased emergency department visits before a diagnosis of COPD, and increased mortality. Another study in Canada of women from Ontario in the Breast Cancer Screening Study found 1,705 of 4,051 women with asthma also had COPD. While air pollution did not increase the risk of developing asthma-COPD overlap, there was an association between body mass index, low level of education, living in a rural area, and smoking status.

Among farmers in rural areas, “it has been recognized that there is something called the asthma-like syndrome that’s been reported in adult farming communities,” Dr. Poole said, which includes “some degree of airflow obstruction and reversibility” that can be worsened by smoking and could be an overlap of asthma and COPD. Farmers can also experience asthma exacerbations while working, and “livestock farmers appear more at risk of developing [chronic bronchitis and/or COPD] than do the crop farmers,” she noted.

Occupational environments outside of agriculture exposure can cause incident asthma, with high-molecular-weight antigens such as flour cereal, animal dander, latex, psyllium, crab processing products, and enzymes as well as low-molecular-weight antigens such as isocyanates, woods, antibiotics, glues, epoxies colophony products, and dyes presenting a risk. In food processing, main allergen sources can include raw and processed animal and plant products, additives and preservatives, contaminants from microbes or insects, inhaled dust particles or aerosols, which can be “IgE mediated, mixed IgE-mediated and non-lgE mediated.”

While some studies have been conducted on the prevalence of work-related asthma and asthma-COPD overlap, “in general, the prevalence and clinical features have been scarcely investigated,” Dr. Poole said. One survey of 23,137 patients found 52.9% of adults with work-related asthma also had COPD, compared with 25.6% of participants whose asthma was not work related.

To prevent asthma-COPD overlap, Dr. Poole recommended tobacco cessation, reducing indoor biomass fuel use, medical surveillance programs such as preplacement questionnaires, and considering “reducing exposure to the respiratory sensitizers with ideally monitoring the levels to keep the levels below the permissible limits.”

Dr. Poole noted there is currently no unique treatment for asthma-COPD overlap, but it is “important to fully characterize and phenotype your individual patients, looking for eosinophilia or seeing if they have more neutrophil features and whether or not the allergy features are prevalent and can be treated,” she said. “[A]wareness is really required such that counseling is encouraged for prevention and or interventional strategies as we move forward.”

For patients with features of both asthma and COPD where there is a high likelihood of asthma, treat the disease as if it were asthma, Dr. Poole said, but clinicians should follow GINA GOLD COPD treatment recommendations, adding on long-acting beta-agonists (LABAs) and long-acting muscarinic antagonists (LAMAs) when needed, but avoiding LABAs and/or LAMAs without use of inhaled corticosteroids, and avoiding oral corticosteroids entirely. Clinicians should be reviewing the treatments of patients with asthma and COPD features “every 2-3 months to see how their response is to it, and what additional therapies could be used,” she said.

Dr. Poole reports receiving grant support from National Institute of Environmental Health Sciences, National Institute for Occupational Safety and Health, and the Central States Center for Agricultural Safety and Health at the University of Nebraska Medical Center.

The development and worsening of overlapping asthma and chronic obstructive pulmonary disease (COPD) can be affected by pollutants found in rural and urban environments, according to a recent presentation at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

“Urban-rural-occupational air pollutants or respiratory sensitizers impact asthma and the asthma-COPD overlap features,” Jill A. Poole, MD, division chief of allergy and immunology at the University of Nebraska Medical Center, Omaha, said in her presentation.

The Global Initiative for Asthma (GINA) first outlined a syndrome in 2015 described as “persistent airflow limitation with several features usually associated with asthma and several features usually associated with COPD” and called asthma-COPD overlap syndrome. In 2017, a joint American Thoracic Society/National Heart, Lung, and Blood Institute workshop outlined knowledge gaps about asthma-COPD overlap, noting it “does not represent a single discrete disease entity.”

“This is not a single disease and should be thought of as being heterogeneous and used as a descriptive label for patients commonly seen in clinical practice,” Dr. Poole said. “Both asthma and COPD definitions are not mutually exclusive because each disease includes several phenotypes with different underlining mechanisms.” An example of how asthma-COPD overlap might present is through a patient with allergic asthma who has a history of smoking who develops airflow obstruction that isn’t fully reversible, or a patient with COPD “with high reversible airflow, obstruction, type 2 inflammation, and perhaps the presence of peripheral blood eosinophils or sputum eosinophils.”

A patient’s interaction with urban, rural, and occupational environments may additionally impact their disease, Dr. Poole explained. “The environmental factors of an urban versus rural environment may not be necessarily mutually exclusive,” she said. “It’s also important to recognize occupational exposures that can be both seen in an urban or rural environment [can] contribute to asthma-COPD overlap.”

In a study of 6,040 men and women with asthma living in Canada, 630 (10.4%) had asthma-COPD overlap, with increased air pollution raising the likelihood of developing asthma-COPD overlap (odds ratio, 2.78; 95% confidence interval, 1.62-4.78). These people experienced later onset asthma, increased emergency department visits before a diagnosis of COPD, and increased mortality. Another study in Canada of women from Ontario in the Breast Cancer Screening Study found 1,705 of 4,051 women with asthma also had COPD. While air pollution did not increase the risk of developing asthma-COPD overlap, there was an association between body mass index, low level of education, living in a rural area, and smoking status.

Among farmers in rural areas, “it has been recognized that there is something called the asthma-like syndrome that’s been reported in adult farming communities,” Dr. Poole said, which includes “some degree of airflow obstruction and reversibility” that can be worsened by smoking and could be an overlap of asthma and COPD. Farmers can also experience asthma exacerbations while working, and “livestock farmers appear more at risk of developing [chronic bronchitis and/or COPD] than do the crop farmers,” she noted.

Occupational environments outside of agriculture exposure can cause incident asthma, with high-molecular-weight antigens such as flour cereal, animal dander, latex, psyllium, crab processing products, and enzymes as well as low-molecular-weight antigens such as isocyanates, woods, antibiotics, glues, epoxies colophony products, and dyes presenting a risk. In food processing, main allergen sources can include raw and processed animal and plant products, additives and preservatives, contaminants from microbes or insects, inhaled dust particles or aerosols, which can be “IgE mediated, mixed IgE-mediated and non-lgE mediated.”

While some studies have been conducted on the prevalence of work-related asthma and asthma-COPD overlap, “in general, the prevalence and clinical features have been scarcely investigated,” Dr. Poole said. One survey of 23,137 patients found 52.9% of adults with work-related asthma also had COPD, compared with 25.6% of participants whose asthma was not work related.

To prevent asthma-COPD overlap, Dr. Poole recommended tobacco cessation, reducing indoor biomass fuel use, medical surveillance programs such as preplacement questionnaires, and considering “reducing exposure to the respiratory sensitizers with ideally monitoring the levels to keep the levels below the permissible limits.”

Dr. Poole noted there is currently no unique treatment for asthma-COPD overlap, but it is “important to fully characterize and phenotype your individual patients, looking for eosinophilia or seeing if they have more neutrophil features and whether or not the allergy features are prevalent and can be treated,” she said. “[A]wareness is really required such that counseling is encouraged for prevention and or interventional strategies as we move forward.”

For patients with features of both asthma and COPD where there is a high likelihood of asthma, treat the disease as if it were asthma, Dr. Poole said, but clinicians should follow GINA GOLD COPD treatment recommendations, adding on long-acting beta-agonists (LABAs) and long-acting muscarinic antagonists (LAMAs) when needed, but avoiding LABAs and/or LAMAs without use of inhaled corticosteroids, and avoiding oral corticosteroids entirely. Clinicians should be reviewing the treatments of patients with asthma and COPD features “every 2-3 months to see how their response is to it, and what additional therapies could be used,” she said.

Dr. Poole reports receiving grant support from National Institute of Environmental Health Sciences, National Institute for Occupational Safety and Health, and the Central States Center for Agricultural Safety and Health at the University of Nebraska Medical Center.

The development and worsening of overlapping asthma and chronic obstructive pulmonary disease (COPD) can be affected by pollutants found in rural and urban environments, according to a recent presentation at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

“Urban-rural-occupational air pollutants or respiratory sensitizers impact asthma and the asthma-COPD overlap features,” Jill A. Poole, MD, division chief of allergy and immunology at the University of Nebraska Medical Center, Omaha, said in her presentation.

The Global Initiative for Asthma (GINA) first outlined a syndrome in 2015 described as “persistent airflow limitation with several features usually associated with asthma and several features usually associated with COPD” and called asthma-COPD overlap syndrome. In 2017, a joint American Thoracic Society/National Heart, Lung, and Blood Institute workshop outlined knowledge gaps about asthma-COPD overlap, noting it “does not represent a single discrete disease entity.”

“This is not a single disease and should be thought of as being heterogeneous and used as a descriptive label for patients commonly seen in clinical practice,” Dr. Poole said. “Both asthma and COPD definitions are not mutually exclusive because each disease includes several phenotypes with different underlining mechanisms.” An example of how asthma-COPD overlap might present is through a patient with allergic asthma who has a history of smoking who develops airflow obstruction that isn’t fully reversible, or a patient with COPD “with high reversible airflow, obstruction, type 2 inflammation, and perhaps the presence of peripheral blood eosinophils or sputum eosinophils.”

A patient’s interaction with urban, rural, and occupational environments may additionally impact their disease, Dr. Poole explained. “The environmental factors of an urban versus rural environment may not be necessarily mutually exclusive,” she said. “It’s also important to recognize occupational exposures that can be both seen in an urban or rural environment [can] contribute to asthma-COPD overlap.”

In a study of 6,040 men and women with asthma living in Canada, 630 (10.4%) had asthma-COPD overlap, with increased air pollution raising the likelihood of developing asthma-COPD overlap (odds ratio, 2.78; 95% confidence interval, 1.62-4.78). These people experienced later onset asthma, increased emergency department visits before a diagnosis of COPD, and increased mortality. Another study in Canada of women from Ontario in the Breast Cancer Screening Study found 1,705 of 4,051 women with asthma also had COPD. While air pollution did not increase the risk of developing asthma-COPD overlap, there was an association between body mass index, low level of education, living in a rural area, and smoking status.

Among farmers in rural areas, “it has been recognized that there is something called the asthma-like syndrome that’s been reported in adult farming communities,” Dr. Poole said, which includes “some degree of airflow obstruction and reversibility” that can be worsened by smoking and could be an overlap of asthma and COPD. Farmers can also experience asthma exacerbations while working, and “livestock farmers appear more at risk of developing [chronic bronchitis and/or COPD] than do the crop farmers,” she noted.

Occupational environments outside of agriculture exposure can cause incident asthma, with high-molecular-weight antigens such as flour cereal, animal dander, latex, psyllium, crab processing products, and enzymes as well as low-molecular-weight antigens such as isocyanates, woods, antibiotics, glues, epoxies colophony products, and dyes presenting a risk. In food processing, main allergen sources can include raw and processed animal and plant products, additives and preservatives, contaminants from microbes or insects, inhaled dust particles or aerosols, which can be “IgE mediated, mixed IgE-mediated and non-lgE mediated.”

While some studies have been conducted on the prevalence of work-related asthma and asthma-COPD overlap, “in general, the prevalence and clinical features have been scarcely investigated,” Dr. Poole said. One survey of 23,137 patients found 52.9% of adults with work-related asthma also had COPD, compared with 25.6% of participants whose asthma was not work related.

To prevent asthma-COPD overlap, Dr. Poole recommended tobacco cessation, reducing indoor biomass fuel use, medical surveillance programs such as preplacement questionnaires, and considering “reducing exposure to the respiratory sensitizers with ideally monitoring the levels to keep the levels below the permissible limits.”

Dr. Poole noted there is currently no unique treatment for asthma-COPD overlap, but it is “important to fully characterize and phenotype your individual patients, looking for eosinophilia or seeing if they have more neutrophil features and whether or not the allergy features are prevalent and can be treated,” she said. “[A]wareness is really required such that counseling is encouraged for prevention and or interventional strategies as we move forward.”

For patients with features of both asthma and COPD where there is a high likelihood of asthma, treat the disease as if it were asthma, Dr. Poole said, but clinicians should follow GINA GOLD COPD treatment recommendations, adding on long-acting beta-agonists (LABAs) and long-acting muscarinic antagonists (LAMAs) when needed, but avoiding LABAs and/or LAMAs without use of inhaled corticosteroids, and avoiding oral corticosteroids entirely. Clinicians should be reviewing the treatments of patients with asthma and COPD features “every 2-3 months to see how their response is to it, and what additional therapies could be used,” she said.

Dr. Poole reports receiving grant support from National Institute of Environmental Health Sciences, National Institute for Occupational Safety and Health, and the Central States Center for Agricultural Safety and Health at the University of Nebraska Medical Center.

On the advice of its independent data monitoring committee (DMC), the RECOVERY trial has stopped recruitment to the colchicine arm for lack of efficacy in patients hospitalized with COVID-19.

“The DMC saw no convincing evidence that further recruitment would provide conclusive proof of worthwhile mortality benefit either overall or in any prespecified subgroup,” the British investigators announced on March 5.

“The RECOVERY trial has already identified two anti-inflammatory drugs – dexamethasone and tocilizumab – that improve the chances of survival for patients with severe COVID-19. So, it is disappointing that colchicine, which is widely used to treat gout and other inflammatory conditions, has no effect in these patients,” cochief investigator Martin Landray, MBChB, PhD, said in a statement.

“We do large, randomized trials to establish whether a drug that seems promising in theory has real benefits for patients in practice. Unfortunately, colchicine is not one of those,” said Dr. Landry, University of Oxford (England).

The RECOVERY trial is evaluating a range of potential treatments for COVID-19 at 180 hospitals in the United Kingdom, Indonesia, and Nepal, and was designed with the expectation that drugs would be added or dropped as the evidence changes. Since November 2020, the trial has included an arm comparing colchicine with usual care alone.

As part of a routine meeting March 4, the DMC reviewed data from a preliminary analysis based on 2,178 deaths among 11,162 patients, 94% of whom were being treated with a corticosteroid such as dexamethasone.

The results showed no significant difference in the primary endpoint of 28-day mortality in patients randomized to colchicine versus usual care alone (20% vs. 19%; risk ratio, 1.02; 95% confidence interval, 0.94-1.11; P = .63).

Follow-up is ongoing and final results will be published as soon as possible, the investigators said. Thus far, there has been no convincing evidence of an effect of colchicine on clinical outcomes in hospitalized COVID-19 patients.

Recruitment will continue to all other treatment arms – aspirin, baricitinib, Regeneron’s antibody cocktail, and, in select hospitals, dimethyl fumarate – the investigators said.

Cochief investigator Peter Hornby, MD, PhD, also from the University of Oxford, noted that this has been the largest trial ever of colchicine. “Whilst we are disappointed that the overall result is negative, it is still important information for the future care of patients in the U.K. and worldwide.”

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

On the advice of its independent data monitoring committee (DMC), the RECOVERY trial has stopped recruitment to the colchicine arm for lack of efficacy in patients hospitalized with COVID-19.

“The DMC saw no convincing evidence that further recruitment would provide conclusive proof of worthwhile mortality benefit either overall or in any prespecified subgroup,” the British investigators announced on March 5.

“The RECOVERY trial has already identified two anti-inflammatory drugs – dexamethasone and tocilizumab – that improve the chances of survival for patients with severe COVID-19. So, it is disappointing that colchicine, which is widely used to treat gout and other inflammatory conditions, has no effect in these patients,” cochief investigator Martin Landray, MBChB, PhD, said in a statement.

“We do large, randomized trials to establish whether a drug that seems promising in theory has real benefits for patients in practice. Unfortunately, colchicine is not one of those,” said Dr. Landry, University of Oxford (England).

The RECOVERY trial is evaluating a range of potential treatments for COVID-19 at 180 hospitals in the United Kingdom, Indonesia, and Nepal, and was designed with the expectation that drugs would be added or dropped as the evidence changes. Since November 2020, the trial has included an arm comparing colchicine with usual care alone.

As part of a routine meeting March 4, the DMC reviewed data from a preliminary analysis based on 2,178 deaths among 11,162 patients, 94% of whom were being treated with a corticosteroid such as dexamethasone.

The results showed no significant difference in the primary endpoint of 28-day mortality in patients randomized to colchicine versus usual care alone (20% vs. 19%; risk ratio, 1.02; 95% confidence interval, 0.94-1.11; P = .63).

Follow-up is ongoing and final results will be published as soon as possible, the investigators said. Thus far, there has been no convincing evidence of an effect of colchicine on clinical outcomes in hospitalized COVID-19 patients.

Recruitment will continue to all other treatment arms – aspirin, baricitinib, Regeneron’s antibody cocktail, and, in select hospitals, dimethyl fumarate – the investigators said.

Cochief investigator Peter Hornby, MD, PhD, also from the University of Oxford, noted that this has been the largest trial ever of colchicine. “Whilst we are disappointed that the overall result is negative, it is still important information for the future care of patients in the U.K. and worldwide.”

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

On the advice of its independent data monitoring committee (DMC), the RECOVERY trial has stopped recruitment to the colchicine arm for lack of efficacy in patients hospitalized with COVID-19.

“The DMC saw no convincing evidence that further recruitment would provide conclusive proof of worthwhile mortality benefit either overall or in any prespecified subgroup,” the British investigators announced on March 5.

“The RECOVERY trial has already identified two anti-inflammatory drugs – dexamethasone and tocilizumab – that improve the chances of survival for patients with severe COVID-19. So, it is disappointing that colchicine, which is widely used to treat gout and other inflammatory conditions, has no effect in these patients,” cochief investigator Martin Landray, MBChB, PhD, said in a statement.

“We do large, randomized trials to establish whether a drug that seems promising in theory has real benefits for patients in practice. Unfortunately, colchicine is not one of those,” said Dr. Landry, University of Oxford (England).

The RECOVERY trial is evaluating a range of potential treatments for COVID-19 at 180 hospitals in the United Kingdom, Indonesia, and Nepal, and was designed with the expectation that drugs would be added or dropped as the evidence changes. Since November 2020, the trial has included an arm comparing colchicine with usual care alone.

As part of a routine meeting March 4, the DMC reviewed data from a preliminary analysis based on 2,178 deaths among 11,162 patients, 94% of whom were being treated with a corticosteroid such as dexamethasone.

The results showed no significant difference in the primary endpoint of 28-day mortality in patients randomized to colchicine versus usual care alone (20% vs. 19%; risk ratio, 1.02; 95% confidence interval, 0.94-1.11; P = .63).

Follow-up is ongoing and final results will be published as soon as possible, the investigators said. Thus far, there has been no convincing evidence of an effect of colchicine on clinical outcomes in hospitalized COVID-19 patients.

Recruitment will continue to all other treatment arms – aspirin, baricitinib, Regeneron’s antibody cocktail, and, in select hospitals, dimethyl fumarate – the investigators said.

Cochief investigator Peter Hornby, MD, PhD, also from the University of Oxford, noted that this has been the largest trial ever of colchicine. “Whilst we are disappointed that the overall result is negative, it is still important information for the future care of patients in the U.K. and worldwide.”

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

Vaping cannabis significantly increased the risk of respiratory symptoms in adolescents, according to findings of a study based on a national sample of teens.

HAZEMMKAMAL/Getty Images

Most studies of electronic nicotine delivery systems (ENDS) use in teens have not addressed cannabis vaping, although e-cigarette– or vaping product use–associated lung injury (EVALI) has been predominately associated with cannabis products, wrote Carol J. Boyd, PhD, of the University of Michigan School of Nursing, Ann Arbor, and colleagues.

“At this time, relatively little is known about the population-level health consequences of adolescents’ use of ENDS, including use with cannabis and controlling for a history of asthma,” they said.

In a study published in the Journal of Adolescent Health, the researchers identified 14,798 adolescents aged 12-17 years using Wave 4 data from the Population Assessment of Tobacco and Health Study. Of these, 17.6% had a baseline asthma diagnosis, 8.9% reported ever using cannabis in ENDS, and 4.7% reported any cannabis use. In addition, 4.2% reported current e-cigarette use, 3.1% reported current cigarette use, 51% were male, and 69.2% were white.
 

Any cannabis vaping makes impact

In a fully-adjusted model, teens who had ever vaped cannabis had higher odds of five respiratory symptoms in the past year, compared with those with no history of cannabis vaping: wheezing or whistling in the chest (adjusted odds ratio, 1.81); sleep disturbed by wheezing or whistling (AOR, 1.71); speech limited because of wheezing (AOR, 1.96); wheezy during and after exercise (AOR, 1.33), and a dry cough at night independent of a cold or chest infection (AOR, 1.26).

Neither e-cigarettes nor cigarettes were significantly associated with any of these five respiratory symptoms in the fully adjusted models. In addition, “past 30-day use of cigarettes, e-cigarettes and cannabis use were associated with some respiratory symptoms in bivariate analyses but not in the adjusted models,” the researchers noted. In addition, the associations of an asthma diagnosis and respiratory symptoms had greater magnitudes than either cigarette, e-cigarette, and cannabis use or vaping cannabis with ENDS.

The study findings were limited by several factors including the inherent limitations of secondary database analysis, the researchers noted. “Another limitation is that co-use of cannabis and tobacco/nicotine was not assessed and, in the future, should be examined: Researchers have found that co-use is related to EVALI symptoms among young adults,” they said.

However, the study is the first known to include ENDS product use and respiratory symptoms while accounting for baseline asthma, and an asthma diagnosis was even more strongly associated with all five respiratory symptoms, the researchers said.

The results suggest that “the inhalation of cannabis via vaping is associated with some pulmonary irritation and symptoms of lung diseases (both known and unknown),” that may be predictive of later EVALI, they concluded.
 

Product details aid in diagnosis

“As we continue to see patients presenting with EVALI in pediatric hospitals, it is important for us to identify if there are specific products (or categories) that are more likely to cause it,” said Brandon Seay, MD, FCCP, a pediatric pulmonologist and sleep specialist at Children’s Healthcare of Atlanta, in an interview. “When we are trying to diagnose EVALI, we should be asking appropriate questions about exposures to specific products to get the best answers. If we simply ask ‘Are you smoking e-cigarettes?’ the patient may not [equate] e-cigarette smoking to vaping cannabis products,” he said. 

Dr. Seay said he was not surprised by the study findings. “A lot of the patients I see with EVALI have reported vaping THC products, and most of them also report that the products were mixed by a friend or an individual instead of being a commercially produced product,” he noted. “This is not surprising, as THC is still illegal in most states and there would not be any commercially available products,” he said. “The mixing of these products by individuals increases the risk of ingredients being more toxic or irritating to the lungs,” Dr. Seay added. “This does highlight the need for more regulation of vaping products. As more states legalize marijuana, more of these products will become available, which will provide an opportunity for increased regulation, he said. 

The take-home message for clinicians is to seek specific details from their young patients, Dr. Seay emphasized. “When we are educating our patients on the dangers of vaping/e-cigarettes, we need to make sure we are asking specifically which products they are using and know the terminology,” he said. “The use of THC-containing products will be increasing across the country with more legalization, so we need to keep ourselves apprised of the different risks between THC- and nicotine-containing devices,” he added.  

As for additional research, it would be interesting to know whether patients were asked where they had gotten their products (commercially available products vs. those mixed by individuals) and explore any difference between the two, said Dr. Seay. “Also, as these products are relatively new to the market, compared to cigarettes, data on the longitudinal effects of vaping (nicotine and THC) over a long period of time, compared to traditional combustible cigarettes, will be needed,” he said.

The study was funded by grants from the National Institutes of Health, National Institute on Drug Abuse, and National Cancer Institute. The researchers had no financial conflicts to disclose.

Dr. Seay had no financial disclosures, but serves as a member of the CHEST Physician editorial board.

Vaping cannabis significantly increased the risk of respiratory symptoms in adolescents, according to findings of a study based on a national sample of teens.

HAZEMMKAMAL/Getty Images

Most studies of electronic nicotine delivery systems (ENDS) use in teens have not addressed cannabis vaping, although e-cigarette– or vaping product use–associated lung injury (EVALI) has been predominately associated with cannabis products, wrote Carol J. Boyd, PhD, of the University of Michigan School of Nursing, Ann Arbor, and colleagues.

“At this time, relatively little is known about the population-level health consequences of adolescents’ use of ENDS, including use with cannabis and controlling for a history of asthma,” they said.

In a study published in the Journal of Adolescent Health, the researchers identified 14,798 adolescents aged 12-17 years using Wave 4 data from the Population Assessment of Tobacco and Health Study. Of these, 17.6% had a baseline asthma diagnosis, 8.9% reported ever using cannabis in ENDS, and 4.7% reported any cannabis use. In addition, 4.2% reported current e-cigarette use, 3.1% reported current cigarette use, 51% were male, and 69.2% were white.
 

Any cannabis vaping makes impact

In a fully-adjusted model, teens who had ever vaped cannabis had higher odds of five respiratory symptoms in the past year, compared with those with no history of cannabis vaping: wheezing or whistling in the chest (adjusted odds ratio, 1.81); sleep disturbed by wheezing or whistling (AOR, 1.71); speech limited because of wheezing (AOR, 1.96); wheezy during and after exercise (AOR, 1.33), and a dry cough at night independent of a cold or chest infection (AOR, 1.26).

Neither e-cigarettes nor cigarettes were significantly associated with any of these five respiratory symptoms in the fully adjusted models. In addition, “past 30-day use of cigarettes, e-cigarettes and cannabis use were associated with some respiratory symptoms in bivariate analyses but not in the adjusted models,” the researchers noted. In addition, the associations of an asthma diagnosis and respiratory symptoms had greater magnitudes than either cigarette, e-cigarette, and cannabis use or vaping cannabis with ENDS.

The study findings were limited by several factors including the inherent limitations of secondary database analysis, the researchers noted. “Another limitation is that co-use of cannabis and tobacco/nicotine was not assessed and, in the future, should be examined: Researchers have found that co-use is related to EVALI symptoms among young adults,” they said.

However, the study is the first known to include ENDS product use and respiratory symptoms while accounting for baseline asthma, and an asthma diagnosis was even more strongly associated with all five respiratory symptoms, the researchers said.

The results suggest that “the inhalation of cannabis via vaping is associated with some pulmonary irritation and symptoms of lung diseases (both known and unknown),” that may be predictive of later EVALI, they concluded.
 

Product details aid in diagnosis

“As we continue to see patients presenting with EVALI in pediatric hospitals, it is important for us to identify if there are specific products (or categories) that are more likely to cause it,” said Brandon Seay, MD, FCCP, a pediatric pulmonologist and sleep specialist at Children’s Healthcare of Atlanta, in an interview. “When we are trying to diagnose EVALI, we should be asking appropriate questions about exposures to specific products to get the best answers. If we simply ask ‘Are you smoking e-cigarettes?’ the patient may not [equate] e-cigarette smoking to vaping cannabis products,” he said. 

Dr. Seay said he was not surprised by the study findings. “A lot of the patients I see with EVALI have reported vaping THC products, and most of them also report that the products were mixed by a friend or an individual instead of being a commercially produced product,” he noted. “This is not surprising, as THC is still illegal in most states and there would not be any commercially available products,” he said. “The mixing of these products by individuals increases the risk of ingredients being more toxic or irritating to the lungs,” Dr. Seay added. “This does highlight the need for more regulation of vaping products. As more states legalize marijuana, more of these products will become available, which will provide an opportunity for increased regulation, he said. 

The take-home message for clinicians is to seek specific details from their young patients, Dr. Seay emphasized. “When we are educating our patients on the dangers of vaping/e-cigarettes, we need to make sure we are asking specifically which products they are using and know the terminology,” he said. “The use of THC-containing products will be increasing across the country with more legalization, so we need to keep ourselves apprised of the different risks between THC- and nicotine-containing devices,” he added.  

As for additional research, it would be interesting to know whether patients were asked where they had gotten their products (commercially available products vs. those mixed by individuals) and explore any difference between the two, said Dr. Seay. “Also, as these products are relatively new to the market, compared to cigarettes, data on the longitudinal effects of vaping (nicotine and THC) over a long period of time, compared to traditional combustible cigarettes, will be needed,” he said.

The study was funded by grants from the National Institutes of Health, National Institute on Drug Abuse, and National Cancer Institute. The researchers had no financial conflicts to disclose.

Dr. Seay had no financial disclosures, but serves as a member of the CHEST Physician editorial board.

Vaping cannabis significantly increased the risk of respiratory symptoms in adolescents, according to findings of a study based on a national sample of teens.

HAZEMMKAMAL/Getty Images

Most studies of electronic nicotine delivery systems (ENDS) use in teens have not addressed cannabis vaping, although e-cigarette– or vaping product use–associated lung injury (EVALI) has been predominately associated with cannabis products, wrote Carol J. Boyd, PhD, of the University of Michigan School of Nursing, Ann Arbor, and colleagues.

“At this time, relatively little is known about the population-level health consequences of adolescents’ use of ENDS, including use with cannabis and controlling for a history of asthma,” they said.

In a study published in the Journal of Adolescent Health, the researchers identified 14,798 adolescents aged 12-17 years using Wave 4 data from the Population Assessment of Tobacco and Health Study. Of these, 17.6% had a baseline asthma diagnosis, 8.9% reported ever using cannabis in ENDS, and 4.7% reported any cannabis use. In addition, 4.2% reported current e-cigarette use, 3.1% reported current cigarette use, 51% were male, and 69.2% were white.
 

Any cannabis vaping makes impact

In a fully-adjusted model, teens who had ever vaped cannabis had higher odds of five respiratory symptoms in the past year, compared with those with no history of cannabis vaping: wheezing or whistling in the chest (adjusted odds ratio, 1.81); sleep disturbed by wheezing or whistling (AOR, 1.71); speech limited because of wheezing (AOR, 1.96); wheezy during and after exercise (AOR, 1.33), and a dry cough at night independent of a cold or chest infection (AOR, 1.26).

Neither e-cigarettes nor cigarettes were significantly associated with any of these five respiratory symptoms in the fully adjusted models. In addition, “past 30-day use of cigarettes, e-cigarettes and cannabis use were associated with some respiratory symptoms in bivariate analyses but not in the adjusted models,” the researchers noted. In addition, the associations of an asthma diagnosis and respiratory symptoms had greater magnitudes than either cigarette, e-cigarette, and cannabis use or vaping cannabis with ENDS.

The study findings were limited by several factors including the inherent limitations of secondary database analysis, the researchers noted. “Another limitation is that co-use of cannabis and tobacco/nicotine was not assessed and, in the future, should be examined: Researchers have found that co-use is related to EVALI symptoms among young adults,” they said.

However, the study is the first known to include ENDS product use and respiratory symptoms while accounting for baseline asthma, and an asthma diagnosis was even more strongly associated with all five respiratory symptoms, the researchers said.

The results suggest that “the inhalation of cannabis via vaping is associated with some pulmonary irritation and symptoms of lung diseases (both known and unknown),” that may be predictive of later EVALI, they concluded.
 

Product details aid in diagnosis

“As we continue to see patients presenting with EVALI in pediatric hospitals, it is important for us to identify if there are specific products (or categories) that are more likely to cause it,” said Brandon Seay, MD, FCCP, a pediatric pulmonologist and sleep specialist at Children’s Healthcare of Atlanta, in an interview. “When we are trying to diagnose EVALI, we should be asking appropriate questions about exposures to specific products to get the best answers. If we simply ask ‘Are you smoking e-cigarettes?’ the patient may not [equate] e-cigarette smoking to vaping cannabis products,” he said. 

Dr. Seay said he was not surprised by the study findings. “A lot of the patients I see with EVALI have reported vaping THC products, and most of them also report that the products were mixed by a friend or an individual instead of being a commercially produced product,” he noted. “This is not surprising, as THC is still illegal in most states and there would not be any commercially available products,” he said. “The mixing of these products by individuals increases the risk of ingredients being more toxic or irritating to the lungs,” Dr. Seay added. “This does highlight the need for more regulation of vaping products. As more states legalize marijuana, more of these products will become available, which will provide an opportunity for increased regulation, he said. 

The take-home message for clinicians is to seek specific details from their young patients, Dr. Seay emphasized. “When we are educating our patients on the dangers of vaping/e-cigarettes, we need to make sure we are asking specifically which products they are using and know the terminology,” he said. “The use of THC-containing products will be increasing across the country with more legalization, so we need to keep ourselves apprised of the different risks between THC- and nicotine-containing devices,” he added.  

As for additional research, it would be interesting to know whether patients were asked where they had gotten their products (commercially available products vs. those mixed by individuals) and explore any difference between the two, said Dr. Seay. “Also, as these products are relatively new to the market, compared to cigarettes, data on the longitudinal effects of vaping (nicotine and THC) over a long period of time, compared to traditional combustible cigarettes, will be needed,” he said.

The study was funded by grants from the National Institutes of Health, National Institute on Drug Abuse, and National Cancer Institute. The researchers had no financial conflicts to disclose.

Dr. Seay had no financial disclosures, but serves as a member of the CHEST Physician editorial board.

The Food and Drug Administration has approved subcutaneously-injected tocilizumab (Actemra) to reduce the rate of pulmonary function decline in systemic sclerosis–associated interstitial lung disease (SSc-ILD) patients, according to a press release from manufacturer Genentech.

Wikimedia Commons/FitzColinGerald/ Creative Commons License

Tocilizumab is the first biologic to be approved by the agency for adults with SSc-ILD, a rare and potentially life-threatening condition that may affect up to 80% of SSc patients and lead to lung inflammation and scarring.

The approval was based primarily on data from a phase 3 randomized, double-blind, placebo-controlled clinical trial (the focuSSced trial) that included 212 adults with SSc. Although that study failed to meet its primary endpoint of change from baseline to 48 weeks in the modified Rodnan Skin Score, the researchers observed a significantly reduced lung function decline as measured by forced vital capacity (FVC) and percent predicted forced vital capacity (ppFVC) among tocilizumab-treated patients, compared with those who received placebo. A total of 68 patients (65%) in the tocilizumab group and 68 patients (64%) in the placebo group had SSc-ILD at baseline.

In a subgroup analysis, patients taking tocilizumab had a smaller decline in mean ppFVC, compared with placebo patients (0.07% vs. –6.4%; mean difference, 6.47%), and a smaller decline in FVC (mean change –14 mL vs. –255 mL with placebo; mean difference, 241 mL).

The mean change from baseline to week 48 in modified Rodnan Skin Score was –5.88 for patients on tocilizumab and –3.77 with placebo.

Safety data were similar between tocilizumab and placebo groups through 48 weeks, and similar for patients with and without SSc-ILD. In general, tocilizumab side effects include increased susceptibility to infections, and serious side effects may include stomach tears, hepatotoxicity, and increased risk of cancer and hepatitis B, according to the prescribing information. However, the most common side effects are upper respiratory tract infections, headache, hypertension, and injection-site reactions.

Tocilizumab, an interleukin-6 receptor antagonist, is already approved for the treatment of adult patients with moderately to severely active rheumatoid arthritis, as well as for adult patients with giant cell arteritis; patients aged 2 years and older with active polyarticular juvenile idiopathic arthritis or active systemic juvenile idiopathic arthritis; and adults and pediatric patients 2 years of age and older with chimeric antigen receptor T-cell–induced severe or life-threatening cytokine release syndrome.

Prescribing information is available here.

The Food and Drug Administration has approved subcutaneously-injected tocilizumab (Actemra) to reduce the rate of pulmonary function decline in systemic sclerosis–associated interstitial lung disease (SSc-ILD) patients, according to a press release from manufacturer Genentech.

Wikimedia Commons/FitzColinGerald/ Creative Commons License

Tocilizumab is the first biologic to be approved by the agency for adults with SSc-ILD, a rare and potentially life-threatening condition that may affect up to 80% of SSc patients and lead to lung inflammation and scarring.

The approval was based primarily on data from a phase 3 randomized, double-blind, placebo-controlled clinical trial (the focuSSced trial) that included 212 adults with SSc. Although that study failed to meet its primary endpoint of change from baseline to 48 weeks in the modified Rodnan Skin Score, the researchers observed a significantly reduced lung function decline as measured by forced vital capacity (FVC) and percent predicted forced vital capacity (ppFVC) among tocilizumab-treated patients, compared with those who received placebo. A total of 68 patients (65%) in the tocilizumab group and 68 patients (64%) in the placebo group had SSc-ILD at baseline.

In a subgroup analysis, patients taking tocilizumab had a smaller decline in mean ppFVC, compared with placebo patients (0.07% vs. –6.4%; mean difference, 6.47%), and a smaller decline in FVC (mean change –14 mL vs. –255 mL with placebo; mean difference, 241 mL).

The mean change from baseline to week 48 in modified Rodnan Skin Score was –5.88 for patients on tocilizumab and –3.77 with placebo.

Safety data were similar between tocilizumab and placebo groups through 48 weeks, and similar for patients with and without SSc-ILD. In general, tocilizumab side effects include increased susceptibility to infections, and serious side effects may include stomach tears, hepatotoxicity, and increased risk of cancer and hepatitis B, according to the prescribing information. However, the most common side effects are upper respiratory tract infections, headache, hypertension, and injection-site reactions.

Tocilizumab, an interleukin-6 receptor antagonist, is already approved for the treatment of adult patients with moderately to severely active rheumatoid arthritis, as well as for adult patients with giant cell arteritis; patients aged 2 years and older with active polyarticular juvenile idiopathic arthritis or active systemic juvenile idiopathic arthritis; and adults and pediatric patients 2 years of age and older with chimeric antigen receptor T-cell–induced severe or life-threatening cytokine release syndrome.

Prescribing information is available here.

The Food and Drug Administration has approved subcutaneously-injected tocilizumab (Actemra) to reduce the rate of pulmonary function decline in systemic sclerosis–associated interstitial lung disease (SSc-ILD) patients, according to a press release from manufacturer Genentech.

Wikimedia Commons/FitzColinGerald/ Creative Commons License

Tocilizumab is the first biologic to be approved by the agency for adults with SSc-ILD, a rare and potentially life-threatening condition that may affect up to 80% of SSc patients and lead to lung inflammation and scarring.

The approval was based primarily on data from a phase 3 randomized, double-blind, placebo-controlled clinical trial (the focuSSced trial) that included 212 adults with SSc. Although that study failed to meet its primary endpoint of change from baseline to 48 weeks in the modified Rodnan Skin Score, the researchers observed a significantly reduced lung function decline as measured by forced vital capacity (FVC) and percent predicted forced vital capacity (ppFVC) among tocilizumab-treated patients, compared with those who received placebo. A total of 68 patients (65%) in the tocilizumab group and 68 patients (64%) in the placebo group had SSc-ILD at baseline.

In a subgroup analysis, patients taking tocilizumab had a smaller decline in mean ppFVC, compared with placebo patients (0.07% vs. –6.4%; mean difference, 6.47%), and a smaller decline in FVC (mean change –14 mL vs. –255 mL with placebo; mean difference, 241 mL).

The mean change from baseline to week 48 in modified Rodnan Skin Score was –5.88 for patients on tocilizumab and –3.77 with placebo.

Safety data were similar between tocilizumab and placebo groups through 48 weeks, and similar for patients with and without SSc-ILD. In general, tocilizumab side effects include increased susceptibility to infections, and serious side effects may include stomach tears, hepatotoxicity, and increased risk of cancer and hepatitis B, according to the prescribing information. However, the most common side effects are upper respiratory tract infections, headache, hypertension, and injection-site reactions.

Tocilizumab, an interleukin-6 receptor antagonist, is already approved for the treatment of adult patients with moderately to severely active rheumatoid arthritis, as well as for adult patients with giant cell arteritis; patients aged 2 years and older with active polyarticular juvenile idiopathic arthritis or active systemic juvenile idiopathic arthritis; and adults and pediatric patients 2 years of age and older with chimeric antigen receptor T-cell–induced severe or life-threatening cytokine release syndrome.

Prescribing information is available here.

ILLUSTRATIVE CASE

A 37-year-old woman with moderate persistent asthma, controlled on the ICS fluticasone (110 μg twice a day) presents to you for an annual exam. She uses her rescue albuterol inhaler a few times per month. Her last exacerbation was 2 years ago. She has never smoked. She is concerned about continuing to take an ICS every day. What alternative regimen would you recommend for this patient?

According to the Centers for Disease Control and Prevention, asthma affected 24.7 million children and adults in the United States in 2018, accounting for 9.8 million physician visits and 1.6 million emergency department (ED) visits.² The National Institutes of Health (NIH) asthma care guidelines, updated in 2020, recommend a SABA prn as step 1 for intermittent asthma, along with nonpharmacologic management.³ Once a patient has persistent asthma, treatment escalation to step 2 calls for use of daily maintenance inhalers as the preferred treatment option.³

However, the 2020 Global Initiative for Asthma (GINA) warns that an as-needed SABA does not protect patients from severe exacerbations, and regular use of a SABA alone (> 3 inhalers/year) can increase the risk of exacerbations.⁴ A meta-analysis and systematic review from 2018 showed that using an ICS/LABA—scheduled and prn for rescue—had lower risk of asthma exacerbations compared with scheduled ICS/LABA with SABA prn for rescue in patients with ­moderate-to-severe persistent asthma.⁵ Interestingly, the updated 2020 NIH guidelines have adopted this strategy. SABA use prn is no longer recommended for rescue in mild and moderate persistent asthma, and the guidelines now suggest that ICS/LABA be used as rescue in addition to daily medication.³

Although evidence has been mounting for adding the as-needed ICS/LABA for rescue in patients on daily medication, the mainstay has been to provide a SABA prn for rescue use.⁵ Confusing matters more, evidence is emerging that as-needed ICS/LABA for rescue alone in certain patients is safe and effective. The randomized controlled Novel START study, an open-label, parallel-group study, compared ICS/LABA prn vs scheduled ICS with SABA prn vs SABA alone prn in adult patients with intermittent or mild persistent asthma.⁶ ICS/LABA prn prevented more exacerbations and provided better daily control than as-needed SABA alone.⁶ In addition, ICS/LABA as needed resulted in fewer severe exacerbations but potentially poorer daily control than ICS with SABA as needed.⁶

The PRACTICAL study investigated treatment of patients with intermittent, mild persistent, and moderate persistent asthma.¹

STUDY SUMMARY

ICS/LABA prn reduced risk of severe exacerbations

The randomized controlled PRACTICAL study was a 52-week, open-label, parallel-group, superiority trial in New Zealand that compared as-needed ICS/LABA (n = 437) to scheduled ICS plus as-needed SABA (n = 448). Patients were 18 to 75 years old, with a diagnosis of asthma. Applying NIH guideline definitions, these patients would fall into intermittent, mild persistent, or moderate persistent asthma categories, and were on either as-needed SABA alone or a scheduled low- to moderate-dose ICS plus an as-needed SABA in the previous 12 weeks.

Patients on an as-needed SABA prerandomization had to have at least 1 of the following: (1) asthma symptoms or need for a SABA at least twice in the past 4 weeks; (2) at least 1 nighttime awakening due to asthma in the past 4 weeks; or (3) a severe exacerbation requiring oral corticosteroids in the past year. Patients on scheduled ICS plus SABA prn prerandomization were required to have either: (1) low or moderate ICS dosing with partly or well-controlled asthma; or (2) if uncontrolled, poor inhaler technique or adherence.

Continue to: Patients in the ICS/LABA group...

Patients in the ICS/LABA group were given budesonide 200 µg/formoterol 6 µg, 1 puff prn, and patients in the ICS plus as-needed SABA group were given budesonide 200 µg, 1 puff twice daily, and terbutaline 250 µg, 2 puffs prn. All patients received an asthma action plan that provided guidance on when to seek medical care if asthma worsened, as well as a log to note urgent medical visits and use of systemic corticosteroids. A subset of patients had adherence and dosing monitored by electronic inhaler usage monitors. Patients were seen at 0, 4, 16, 28, 40, and 52 weeks.

Outcomes. The primary outcome was the number of severe exacerbations per patient per year, defined as treatment with oral corticosteroids for ≥ 3 days or ED visit or hospital admission requiring systemic corticosteroids. Among the secondary outcomes were number of moderate and severe exacerbations per patient per year (defined as an unplanned medical visit: primary care, ED, hospital admission, and any duration of steroids); time to first severe exacerbation; assessment with the Asthma Control Questionnaire (ACQ-5); adverse outcomes; and quantity of ICS used (analysis done only for the subset with electronic inhaler monitoring).

This study represents a compelling, real-world look at emerging asthma recommendations.

ACQ-5 takes the mean of 5 questions assessing asthma control in the previous week, with each question ranging from 0 (no impairment) to 6 (maximum impairment). The statistician was blinded to the primary outcome.

Results. The rate of severe exacerbations per patient per year was 0.119 in the as-needed ICS/LABA group vs 0.172 in the scheduled ICS plus as-needed SABA group (relative rate [RR] = 0.69; 95% confidence interval [CI], 0.48–1.00). Time to first severe asthma exacerbation was longer in the as-needed ICS/LABA group (hazard ratio = 0.60; 95% CI, 0.40–0.91). The rate of moderate and severe exacerbations per patient per year was lower in the as-needed ICS/LABA group: 0.165 vs 0.237 (RR = 0.70; 95% CI, 0.51–0.95).

ACQ-5 scores were similar at all time points (mean difference = 0.07; 95% CI, –0.03 to 0.17). Adverse events were similar between groups (most commonly nasopharyngitis in both groups). Less ICS was used in the ICS/LABA group (difference = –126.5 µg per day; 95% CI, –171.0 to –81.9).

Continue to: WHAT'S NEW

WHAT’S NEW

Study lends support to recent recommendations

This study represents a compelling, real-world look at emerging asthma recommendations. This was the first comprehensive study to show that as-needed ICS/LABA therapy prevents more moderate and severe exacerbations and lengthens the time to first severe exacerbation, compared with scheduled ICS plus SABA prn in intermittent, mild persistent, or moderate persistent asthma. These data have been incorporated into the GINA guidelines, which recommend ICS/LABA prn for step 2.

CAVEATS

Potential bias in study design

The LABA used in this study was formoterol, which has a quicker onset than other LABAs. It is likely that not all LABAs can be used the same way, and both the NIH and GINA guidelines call it out specifically. Additionally, the study’s open-label design can introduce bias but may be the only way to simulate the real-world actions of our patients. Prior studies used placebo inhalers to keep participants and providers blinded but then could not capitalize on the behavior of using only an inhaler prn (as with the ICS/LABA of this study). Finally, there is discordance between the NIH and GINA asthma guidelines on how to use these data.

CHALLENGES TO IMPLEMENTATION

Cost of ICS/LABA may limit its use

Cost is the largest barrier to implementation. Budesonide costs 6 to 10 times more than albuterol per inhaler (retail price of $281-$427 vs $17-$92, respectively).^7,8 However, cost differences are likely negated for patients already on a maintenance inhaler.

ACKNOWLEDGEMENT

The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center For Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health.

ILLUSTRATIVE CASE

A 37-year-old woman with moderate persistent asthma, controlled on the ICS fluticasone (110 μg twice a day) presents to you for an annual exam. She uses her rescue albuterol inhaler a few times per month. Her last exacerbation was 2 years ago. She has never smoked. She is concerned about continuing to take an ICS every day. What alternative regimen would you recommend for this patient?

According to the Centers for Disease Control and Prevention, asthma affected 24.7 million children and adults in the United States in 2018, accounting for 9.8 million physician visits and 1.6 million emergency department (ED) visits.² The National Institutes of Health (NIH) asthma care guidelines, updated in 2020, recommend a SABA prn as step 1 for intermittent asthma, along with nonpharmacologic management.³ Once a patient has persistent asthma, treatment escalation to step 2 calls for use of daily maintenance inhalers as the preferred treatment option.³

However, the 2020 Global Initiative for Asthma (GINA) warns that an as-needed SABA does not protect patients from severe exacerbations, and regular use of a SABA alone (> 3 inhalers/year) can increase the risk of exacerbations.⁴ A meta-analysis and systematic review from 2018 showed that using an ICS/LABA—scheduled and prn for rescue—had lower risk of asthma exacerbations compared with scheduled ICS/LABA with SABA prn for rescue in patients with ­moderate-to-severe persistent asthma.⁵ Interestingly, the updated 2020 NIH guidelines have adopted this strategy. SABA use prn is no longer recommended for rescue in mild and moderate persistent asthma, and the guidelines now suggest that ICS/LABA be used as rescue in addition to daily medication.³

Although evidence has been mounting for adding the as-needed ICS/LABA for rescue in patients on daily medication, the mainstay has been to provide a SABA prn for rescue use.⁵ Confusing matters more, evidence is emerging that as-needed ICS/LABA for rescue alone in certain patients is safe and effective. The randomized controlled Novel START study, an open-label, parallel-group study, compared ICS/LABA prn vs scheduled ICS with SABA prn vs SABA alone prn in adult patients with intermittent or mild persistent asthma.⁶ ICS/LABA prn prevented more exacerbations and provided better daily control than as-needed SABA alone.⁶ In addition, ICS/LABA as needed resulted in fewer severe exacerbations but potentially poorer daily control than ICS with SABA as needed.⁶

The PRACTICAL study investigated treatment of patients with intermittent, mild persistent, and moderate persistent asthma.¹

STUDY SUMMARY

ICS/LABA prn reduced risk of severe exacerbations

The randomized controlled PRACTICAL study was a 52-week, open-label, parallel-group, superiority trial in New Zealand that compared as-needed ICS/LABA (n = 437) to scheduled ICS plus as-needed SABA (n = 448). Patients were 18 to 75 years old, with a diagnosis of asthma. Applying NIH guideline definitions, these patients would fall into intermittent, mild persistent, or moderate persistent asthma categories, and were on either as-needed SABA alone or a scheduled low- to moderate-dose ICS plus an as-needed SABA in the previous 12 weeks.

Patients on an as-needed SABA prerandomization had to have at least 1 of the following: (1) asthma symptoms or need for a SABA at least twice in the past 4 weeks; (2) at least 1 nighttime awakening due to asthma in the past 4 weeks; or (3) a severe exacerbation requiring oral corticosteroids in the past year. Patients on scheduled ICS plus SABA prn prerandomization were required to have either: (1) low or moderate ICS dosing with partly or well-controlled asthma; or (2) if uncontrolled, poor inhaler technique or adherence.

Continue to: Patients in the ICS/LABA group...

Patients in the ICS/LABA group were given budesonide 200 µg/formoterol 6 µg, 1 puff prn, and patients in the ICS plus as-needed SABA group were given budesonide 200 µg, 1 puff twice daily, and terbutaline 250 µg, 2 puffs prn. All patients received an asthma action plan that provided guidance on when to seek medical care if asthma worsened, as well as a log to note urgent medical visits and use of systemic corticosteroids. A subset of patients had adherence and dosing monitored by electronic inhaler usage monitors. Patients were seen at 0, 4, 16, 28, 40, and 52 weeks.

Outcomes. The primary outcome was the number of severe exacerbations per patient per year, defined as treatment with oral corticosteroids for ≥ 3 days or ED visit or hospital admission requiring systemic corticosteroids. Among the secondary outcomes were number of moderate and severe exacerbations per patient per year (defined as an unplanned medical visit: primary care, ED, hospital admission, and any duration of steroids); time to first severe exacerbation; assessment with the Asthma Control Questionnaire (ACQ-5); adverse outcomes; and quantity of ICS used (analysis done only for the subset with electronic inhaler monitoring).

This study represents a compelling, real-world look at emerging asthma recommendations.

ACQ-5 takes the mean of 5 questions assessing asthma control in the previous week, with each question ranging from 0 (no impairment) to 6 (maximum impairment). The statistician was blinded to the primary outcome.

Results. The rate of severe exacerbations per patient per year was 0.119 in the as-needed ICS/LABA group vs 0.172 in the scheduled ICS plus as-needed SABA group (relative rate [RR] = 0.69; 95% confidence interval [CI], 0.48–1.00). Time to first severe asthma exacerbation was longer in the as-needed ICS/LABA group (hazard ratio = 0.60; 95% CI, 0.40–0.91). The rate of moderate and severe exacerbations per patient per year was lower in the as-needed ICS/LABA group: 0.165 vs 0.237 (RR = 0.70; 95% CI, 0.51–0.95).

ACQ-5 scores were similar at all time points (mean difference = 0.07; 95% CI, –0.03 to 0.17). Adverse events were similar between groups (most commonly nasopharyngitis in both groups). Less ICS was used in the ICS/LABA group (difference = –126.5 µg per day; 95% CI, –171.0 to –81.9).

Continue to: WHAT'S NEW

WHAT’S NEW

Study lends support to recent recommendations

This study represents a compelling, real-world look at emerging asthma recommendations. This was the first comprehensive study to show that as-needed ICS/LABA therapy prevents more moderate and severe exacerbations and lengthens the time to first severe exacerbation, compared with scheduled ICS plus SABA prn in intermittent, mild persistent, or moderate persistent asthma. These data have been incorporated into the GINA guidelines, which recommend ICS/LABA prn for step 2.

CAVEATS

Potential bias in study design

The LABA used in this study was formoterol, which has a quicker onset than other LABAs. It is likely that not all LABAs can be used the same way, and both the NIH and GINA guidelines call it out specifically. Additionally, the study’s open-label design can introduce bias but may be the only way to simulate the real-world actions of our patients. Prior studies used placebo inhalers to keep participants and providers blinded but then could not capitalize on the behavior of using only an inhaler prn (as with the ICS/LABA of this study). Finally, there is discordance between the NIH and GINA asthma guidelines on how to use these data.

CHALLENGES TO IMPLEMENTATION

Cost of ICS/LABA may limit its use

Cost is the largest barrier to implementation. Budesonide costs 6 to 10 times more than albuterol per inhaler (retail price of $281-$427 vs $17-$92, respectively).^7,8 However, cost differences are likely negated for patients already on a maintenance inhaler.

ACKNOWLEDGEMENT

The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center For Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health.

ILLUSTRATIVE CASE

A 37-year-old woman with moderate persistent asthma, controlled on the ICS fluticasone (110 μg twice a day) presents to you for an annual exam. She uses her rescue albuterol inhaler a few times per month. Her last exacerbation was 2 years ago. She has never smoked. She is concerned about continuing to take an ICS every day. What alternative regimen would you recommend for this patient?

According to the Centers for Disease Control and Prevention, asthma affected 24.7 million children and adults in the United States in 2018, accounting for 9.8 million physician visits and 1.6 million emergency department (ED) visits.² The National Institutes of Health (NIH) asthma care guidelines, updated in 2020, recommend a SABA prn as step 1 for intermittent asthma, along with nonpharmacologic management.³ Once a patient has persistent asthma, treatment escalation to step 2 calls for use of daily maintenance inhalers as the preferred treatment option.³

However, the 2020 Global Initiative for Asthma (GINA) warns that an as-needed SABA does not protect patients from severe exacerbations, and regular use of a SABA alone (> 3 inhalers/year) can increase the risk of exacerbations.⁴ A meta-analysis and systematic review from 2018 showed that using an ICS/LABA—scheduled and prn for rescue—had lower risk of asthma exacerbations compared with scheduled ICS/LABA with SABA prn for rescue in patients with ­moderate-to-severe persistent asthma.⁵ Interestingly, the updated 2020 NIH guidelines have adopted this strategy. SABA use prn is no longer recommended for rescue in mild and moderate persistent asthma, and the guidelines now suggest that ICS/LABA be used as rescue in addition to daily medication.³

Although evidence has been mounting for adding the as-needed ICS/LABA for rescue in patients on daily medication, the mainstay has been to provide a SABA prn for rescue use.⁵ Confusing matters more, evidence is emerging that as-needed ICS/LABA for rescue alone in certain patients is safe and effective. The randomized controlled Novel START study, an open-label, parallel-group study, compared ICS/LABA prn vs scheduled ICS with SABA prn vs SABA alone prn in adult patients with intermittent or mild persistent asthma.⁶ ICS/LABA prn prevented more exacerbations and provided better daily control than as-needed SABA alone.⁶ In addition, ICS/LABA as needed resulted in fewer severe exacerbations but potentially poorer daily control than ICS with SABA as needed.⁶

The PRACTICAL study investigated treatment of patients with intermittent, mild persistent, and moderate persistent asthma.¹

STUDY SUMMARY

ICS/LABA prn reduced risk of severe exacerbations

The randomized controlled PRACTICAL study was a 52-week, open-label, parallel-group, superiority trial in New Zealand that compared as-needed ICS/LABA (n = 437) to scheduled ICS plus as-needed SABA (n = 448). Patients were 18 to 75 years old, with a diagnosis of asthma. Applying NIH guideline definitions, these patients would fall into intermittent, mild persistent, or moderate persistent asthma categories, and were on either as-needed SABA alone or a scheduled low- to moderate-dose ICS plus an as-needed SABA in the previous 12 weeks.

Patients on an as-needed SABA prerandomization had to have at least 1 of the following: (1) asthma symptoms or need for a SABA at least twice in the past 4 weeks; (2) at least 1 nighttime awakening due to asthma in the past 4 weeks; or (3) a severe exacerbation requiring oral corticosteroids in the past year. Patients on scheduled ICS plus SABA prn prerandomization were required to have either: (1) low or moderate ICS dosing with partly or well-controlled asthma; or (2) if uncontrolled, poor inhaler technique or adherence.

Continue to: Patients in the ICS/LABA group...

Patients in the ICS/LABA group were given budesonide 200 µg/formoterol 6 µg, 1 puff prn, and patients in the ICS plus as-needed SABA group were given budesonide 200 µg, 1 puff twice daily, and terbutaline 250 µg, 2 puffs prn. All patients received an asthma action plan that provided guidance on when to seek medical care if asthma worsened, as well as a log to note urgent medical visits and use of systemic corticosteroids. A subset of patients had adherence and dosing monitored by electronic inhaler usage monitors. Patients were seen at 0, 4, 16, 28, 40, and 52 weeks.

Outcomes. The primary outcome was the number of severe exacerbations per patient per year, defined as treatment with oral corticosteroids for ≥ 3 days or ED visit or hospital admission requiring systemic corticosteroids. Among the secondary outcomes were number of moderate and severe exacerbations per patient per year (defined as an unplanned medical visit: primary care, ED, hospital admission, and any duration of steroids); time to first severe exacerbation; assessment with the Asthma Control Questionnaire (ACQ-5); adverse outcomes; and quantity of ICS used (analysis done only for the subset with electronic inhaler monitoring).

This study represents a compelling, real-world look at emerging asthma recommendations.

ACQ-5 takes the mean of 5 questions assessing asthma control in the previous week, with each question ranging from 0 (no impairment) to 6 (maximum impairment). The statistician was blinded to the primary outcome.

Results. The rate of severe exacerbations per patient per year was 0.119 in the as-needed ICS/LABA group vs 0.172 in the scheduled ICS plus as-needed SABA group (relative rate [RR] = 0.69; 95% confidence interval [CI], 0.48–1.00). Time to first severe asthma exacerbation was longer in the as-needed ICS/LABA group (hazard ratio = 0.60; 95% CI, 0.40–0.91). The rate of moderate and severe exacerbations per patient per year was lower in the as-needed ICS/LABA group: 0.165 vs 0.237 (RR = 0.70; 95% CI, 0.51–0.95).

ACQ-5 scores were similar at all time points (mean difference = 0.07; 95% CI, –0.03 to 0.17). Adverse events were similar between groups (most commonly nasopharyngitis in both groups). Less ICS was used in the ICS/LABA group (difference = –126.5 µg per day; 95% CI, –171.0 to –81.9).

Continue to: WHAT'S NEW

WHAT’S NEW

Study lends support to recent recommendations

This study represents a compelling, real-world look at emerging asthma recommendations. This was the first comprehensive study to show that as-needed ICS/LABA therapy prevents more moderate and severe exacerbations and lengthens the time to first severe exacerbation, compared with scheduled ICS plus SABA prn in intermittent, mild persistent, or moderate persistent asthma. These data have been incorporated into the GINA guidelines, which recommend ICS/LABA prn for step 2.

CAVEATS

Potential bias in study design

The LABA used in this study was formoterol, which has a quicker onset than other LABAs. It is likely that not all LABAs can be used the same way, and both the NIH and GINA guidelines call it out specifically. Additionally, the study’s open-label design can introduce bias but may be the only way to simulate the real-world actions of our patients. Prior studies used placebo inhalers to keep participants and providers blinded but then could not capitalize on the behavior of using only an inhaler prn (as with the ICS/LABA of this study). Finally, there is discordance between the NIH and GINA asthma guidelines on how to use these data.

CHALLENGES TO IMPLEMENTATION

Cost of ICS/LABA may limit its use

Cost is the largest barrier to implementation. Budesonide costs 6 to 10 times more than albuterol per inhaler (retail price of $281-$427 vs $17-$92, respectively).^7,8 However, cost differences are likely negated for patients already on a maintenance inhaler.

ACKNOWLEDGEMENT

The PURLs Surveillance System was supported in part by Grant Number UL1RR024999 from the National Center For Research Resources, a Clinical Translational Science Award to the University of Chicago. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Center For Research Resources or the National Institutes of Health.