Federal Practitioner

An international survey provides new insights into how COVID-19 has affected, and may continue to affect, the field of oncology.

The survey showed that “COVID-19 has had a major impact on the organization of patient care, on the well-being of caregivers, on continued medical education, and on clinical trial activities in oncology,” stated Guy Jerusalem, MD, PhD, of Centre Hospitalier Universitaire de Liège (Belgium).

Dr. Jerusalem presented these findings at the European Society for Medical Oncology Virtual Congress 2020.

The survey was distributed by 20 oncologists from 10 of the countries most affected by COVID-19. Responses were obtained from 109 oncologists representing centers in 18 countries. The responses were recorded between June 17 and July 14, 2020.

The survey consisted of 95 items intended to evaluate the impact of COVID-19 on the organization of oncologic care. Questions encompassed the capacity and service offered at each center, the magnitude of COVID-19–based care interruptions and the reasons for them, the ensuing challenges faced, interventions implemented, and the estimated harms to patients during the pandemic.

The 109 oncologists surveyed had a median of 20 years of oncology experience. A majority of respondents were men (61.5%), and the median age was 48.5 years.

The respondents had worked predominantly (62.4%) at academic hospitals, with 29.6% at community hospitals. Most respondents worked at general hospitals with an oncology unit (66.1%) rather than a specialized separate cancer center (32.1%).

The most common specialty was breast cancer (60.6%), followed by gastrointestinal cancer (10.1%), urogenital cancer (9.2%), and lung cancer (8.3%).
 

Impact on treatment

The treatment modalities affected by the pandemic – through cancellations or delays in more than 10% of patients – included surgery (in 34% of centers), chemotherapy (22%), radiotherapy (13.7%), checkpoint inhibitor therapy (9.1%), monoclonal antibodies (9%), and oral targeted therapy (3.7%).

Among oncologists treating breast cancer, cancellations/delays in more than 10% of patients were reported for everolimus (18%), CDK4/6 inhibitors (8.9%), and endocrine therapy (2.2%).

Overall, 34.8% of respondents reported increased use of granulocyte colony–stimulating factor, and 6.4% reported increased use of erythropoietin.

On the other hand, 11.1% of respondents reported a decrease in the use of double immunotherapy, and 21.9% reported decreased use of corticosteroids.

Not only can the immunosuppressive effects of steroid use increase infection risks, Dr. Jerusalem noted, fever suppression can lead to a delayed diagnosis of COVID-19.

“To circumvent potential higher infection risks or greater disease severity, we use lower doses of steroids, but this is not based on studies,” he said.

“Previous exposure to steroids or being on steroids at the time of COVID-19 infection is a detrimental factor for complications and mortality,” commented ESMO President Solange Peters, MD, PhD, of Centre Hospitalier Universitaire Vaudois in Lausanne, Switzerland.

Frontline Medical News

Dr. Peters noted that the observation was based on lung cancer registry findings. Furthermore, because data from smaller outbreaks of other coronavirus infections suggested worse prognosis and increased mortality, steroid use was already feared in the very early days of the COVID-19 pandemic.

Lastly, earlier cessation of palliative treatment was observed in 32.1% of centers, and 64.2% of respondents agreed that undertreatment because of COVID-19 is a major concern.

Dr. Jerusalem noted that the survey data do not explain the early cessation of palliative treatment. “I suspect that many patients died at home rather than alone in institutions because it was the only way they could die with their families around them.”
 

Telehealth, meetings, and trials

The survey also revealed rationales for the use of teleconsultation, including follow-up (94.5%), oral therapy (92.7%), immunotherapy (57.8%), and chemotherapy (55%).

Most respondents reported more frequent use of virtual meetings for continuing medical education (94%), oncologic team meetings (92%), and tumor boards (82%).

While about 82% of respondents said they were likely to continue the use of telemedicine, 45% said virtual conferences are not an acceptable alternative to live international conferences such as ESMO, Dr. Jerusalem said.

Finally, nearly three-quarters of respondents (72.5%) said all clinical trial activities are or will soon be activated, or never stopped, at their centers. On the other hand, 27.5% of respondents reported that their centers had major protocol violations or deviations, and 37% of respondents said they expect significant reductions in clinical trial activities this year.

Dr. Jerusalem concluded that COVID-19 is having a major, long-term impact on the organization of patient care, caregivers, continued medical education, and clinical trial activities in oncology.

He cautioned that “the risk of a delayed diagnosis of new cancers and economic consequences of COVID-19 on access to health care and cancer treatments have to be carefully evaluated.”

This research was funded by Fondation Léon Fredericq. Dr. Jerusalem disclosed relationships with Novartis, Roche, Lilly, Pfizer, Amgen, Bristol-Myers Squibb, AstraZeneca, Daiichi Sankyo, AbbVie, MedImmune, and Merck. Dr. Peters disclosed relationships with AbbVie, Amgen, AstraZeneca, and many other companies.

SOURCE: Jerusalem G et al. ESMO 2020, Abstract LBA76.

An international survey provides new insights into how COVID-19 has affected, and may continue to affect, the field of oncology.

The survey showed that “COVID-19 has had a major impact on the organization of patient care, on the well-being of caregivers, on continued medical education, and on clinical trial activities in oncology,” stated Guy Jerusalem, MD, PhD, of Centre Hospitalier Universitaire de Liège (Belgium).

Dr. Jerusalem presented these findings at the European Society for Medical Oncology Virtual Congress 2020.

The survey was distributed by 20 oncologists from 10 of the countries most affected by COVID-19. Responses were obtained from 109 oncologists representing centers in 18 countries. The responses were recorded between June 17 and July 14, 2020.

The survey consisted of 95 items intended to evaluate the impact of COVID-19 on the organization of oncologic care. Questions encompassed the capacity and service offered at each center, the magnitude of COVID-19–based care interruptions and the reasons for them, the ensuing challenges faced, interventions implemented, and the estimated harms to patients during the pandemic.

The 109 oncologists surveyed had a median of 20 years of oncology experience. A majority of respondents were men (61.5%), and the median age was 48.5 years.

The respondents had worked predominantly (62.4%) at academic hospitals, with 29.6% at community hospitals. Most respondents worked at general hospitals with an oncology unit (66.1%) rather than a specialized separate cancer center (32.1%).

The most common specialty was breast cancer (60.6%), followed by gastrointestinal cancer (10.1%), urogenital cancer (9.2%), and lung cancer (8.3%).
 

Impact on treatment

The treatment modalities affected by the pandemic – through cancellations or delays in more than 10% of patients – included surgery (in 34% of centers), chemotherapy (22%), radiotherapy (13.7%), checkpoint inhibitor therapy (9.1%), monoclonal antibodies (9%), and oral targeted therapy (3.7%).

Among oncologists treating breast cancer, cancellations/delays in more than 10% of patients were reported for everolimus (18%), CDK4/6 inhibitors (8.9%), and endocrine therapy (2.2%).

Overall, 34.8% of respondents reported increased use of granulocyte colony–stimulating factor, and 6.4% reported increased use of erythropoietin.

On the other hand, 11.1% of respondents reported a decrease in the use of double immunotherapy, and 21.9% reported decreased use of corticosteroids.

Not only can the immunosuppressive effects of steroid use increase infection risks, Dr. Jerusalem noted, fever suppression can lead to a delayed diagnosis of COVID-19.

“To circumvent potential higher infection risks or greater disease severity, we use lower doses of steroids, but this is not based on studies,” he said.

“Previous exposure to steroids or being on steroids at the time of COVID-19 infection is a detrimental factor for complications and mortality,” commented ESMO President Solange Peters, MD, PhD, of Centre Hospitalier Universitaire Vaudois in Lausanne, Switzerland.

Frontline Medical News

Dr. Peters noted that the observation was based on lung cancer registry findings. Furthermore, because data from smaller outbreaks of other coronavirus infections suggested worse prognosis and increased mortality, steroid use was already feared in the very early days of the COVID-19 pandemic.

Lastly, earlier cessation of palliative treatment was observed in 32.1% of centers, and 64.2% of respondents agreed that undertreatment because of COVID-19 is a major concern.

Dr. Jerusalem noted that the survey data do not explain the early cessation of palliative treatment. “I suspect that many patients died at home rather than alone in institutions because it was the only way they could die with their families around them.”
 

Telehealth, meetings, and trials

The survey also revealed rationales for the use of teleconsultation, including follow-up (94.5%), oral therapy (92.7%), immunotherapy (57.8%), and chemotherapy (55%).

Most respondents reported more frequent use of virtual meetings for continuing medical education (94%), oncologic team meetings (92%), and tumor boards (82%).

While about 82% of respondents said they were likely to continue the use of telemedicine, 45% said virtual conferences are not an acceptable alternative to live international conferences such as ESMO, Dr. Jerusalem said.

Finally, nearly three-quarters of respondents (72.5%) said all clinical trial activities are or will soon be activated, or never stopped, at their centers. On the other hand, 27.5% of respondents reported that their centers had major protocol violations or deviations, and 37% of respondents said they expect significant reductions in clinical trial activities this year.

Dr. Jerusalem concluded that COVID-19 is having a major, long-term impact on the organization of patient care, caregivers, continued medical education, and clinical trial activities in oncology.

He cautioned that “the risk of a delayed diagnosis of new cancers and economic consequences of COVID-19 on access to health care and cancer treatments have to be carefully evaluated.”

This research was funded by Fondation Léon Fredericq. Dr. Jerusalem disclosed relationships with Novartis, Roche, Lilly, Pfizer, Amgen, Bristol-Myers Squibb, AstraZeneca, Daiichi Sankyo, AbbVie, MedImmune, and Merck. Dr. Peters disclosed relationships with AbbVie, Amgen, AstraZeneca, and many other companies.

SOURCE: Jerusalem G et al. ESMO 2020, Abstract LBA76.

An international survey provides new insights into how COVID-19 has affected, and may continue to affect, the field of oncology.

The survey showed that “COVID-19 has had a major impact on the organization of patient care, on the well-being of caregivers, on continued medical education, and on clinical trial activities in oncology,” stated Guy Jerusalem, MD, PhD, of Centre Hospitalier Universitaire de Liège (Belgium).

Dr. Jerusalem presented these findings at the European Society for Medical Oncology Virtual Congress 2020.

The survey was distributed by 20 oncologists from 10 of the countries most affected by COVID-19. Responses were obtained from 109 oncologists representing centers in 18 countries. The responses were recorded between June 17 and July 14, 2020.

The survey consisted of 95 items intended to evaluate the impact of COVID-19 on the organization of oncologic care. Questions encompassed the capacity and service offered at each center, the magnitude of COVID-19–based care interruptions and the reasons for them, the ensuing challenges faced, interventions implemented, and the estimated harms to patients during the pandemic.

The 109 oncologists surveyed had a median of 20 years of oncology experience. A majority of respondents were men (61.5%), and the median age was 48.5 years.

The respondents had worked predominantly (62.4%) at academic hospitals, with 29.6% at community hospitals. Most respondents worked at general hospitals with an oncology unit (66.1%) rather than a specialized separate cancer center (32.1%).

The most common specialty was breast cancer (60.6%), followed by gastrointestinal cancer (10.1%), urogenital cancer (9.2%), and lung cancer (8.3%).
 

Impact on treatment

The treatment modalities affected by the pandemic – through cancellations or delays in more than 10% of patients – included surgery (in 34% of centers), chemotherapy (22%), radiotherapy (13.7%), checkpoint inhibitor therapy (9.1%), monoclonal antibodies (9%), and oral targeted therapy (3.7%).

Among oncologists treating breast cancer, cancellations/delays in more than 10% of patients were reported for everolimus (18%), CDK4/6 inhibitors (8.9%), and endocrine therapy (2.2%).

Overall, 34.8% of respondents reported increased use of granulocyte colony–stimulating factor, and 6.4% reported increased use of erythropoietin.

On the other hand, 11.1% of respondents reported a decrease in the use of double immunotherapy, and 21.9% reported decreased use of corticosteroids.

Not only can the immunosuppressive effects of steroid use increase infection risks, Dr. Jerusalem noted, fever suppression can lead to a delayed diagnosis of COVID-19.

“To circumvent potential higher infection risks or greater disease severity, we use lower doses of steroids, but this is not based on studies,” he said.

“Previous exposure to steroids or being on steroids at the time of COVID-19 infection is a detrimental factor for complications and mortality,” commented ESMO President Solange Peters, MD, PhD, of Centre Hospitalier Universitaire Vaudois in Lausanne, Switzerland.

Frontline Medical News

Dr. Peters noted that the observation was based on lung cancer registry findings. Furthermore, because data from smaller outbreaks of other coronavirus infections suggested worse prognosis and increased mortality, steroid use was already feared in the very early days of the COVID-19 pandemic.

Lastly, earlier cessation of palliative treatment was observed in 32.1% of centers, and 64.2% of respondents agreed that undertreatment because of COVID-19 is a major concern.

Dr. Jerusalem noted that the survey data do not explain the early cessation of palliative treatment. “I suspect that many patients died at home rather than alone in institutions because it was the only way they could die with their families around them.”
 

Telehealth, meetings, and trials

The survey also revealed rationales for the use of teleconsultation, including follow-up (94.5%), oral therapy (92.7%), immunotherapy (57.8%), and chemotherapy (55%).

Most respondents reported more frequent use of virtual meetings for continuing medical education (94%), oncologic team meetings (92%), and tumor boards (82%).

While about 82% of respondents said they were likely to continue the use of telemedicine, 45% said virtual conferences are not an acceptable alternative to live international conferences such as ESMO, Dr. Jerusalem said.

Finally, nearly three-quarters of respondents (72.5%) said all clinical trial activities are or will soon be activated, or never stopped, at their centers. On the other hand, 27.5% of respondents reported that their centers had major protocol violations or deviations, and 37% of respondents said they expect significant reductions in clinical trial activities this year.

Dr. Jerusalem concluded that COVID-19 is having a major, long-term impact on the organization of patient care, caregivers, continued medical education, and clinical trial activities in oncology.

He cautioned that “the risk of a delayed diagnosis of new cancers and economic consequences of COVID-19 on access to health care and cancer treatments have to be carefully evaluated.”

This research was funded by Fondation Léon Fredericq. Dr. Jerusalem disclosed relationships with Novartis, Roche, Lilly, Pfizer, Amgen, Bristol-Myers Squibb, AstraZeneca, Daiichi Sankyo, AbbVie, MedImmune, and Merck. Dr. Peters disclosed relationships with AbbVie, Amgen, AstraZeneca, and many other companies.

SOURCE: Jerusalem G et al. ESMO 2020, Abstract LBA76.

When researchers arrived in Seeley Lake, Mont., a town tucked in the northern Rockies, 3 years ago, they could still smell the smoke a day after it cleared from devastating wildfires. Their plan was to chart how long it took for people to recover from living for 7 weeks surrounded by relentless smoke.

They still don’t know, because most residents haven’t recovered. In fact, they’ve gotten worse.

Forest fires had funneled hazardous air into Seeley Lake, a town of fewer than 2,000 people, for 49 days. The air quality was so bad that on some days the monitoring stations couldn’t measure the extent of the pollution. The intensity of the smoke and the length of time residents had been trapped in it were unprecedented, prompting county officials to issue their first evacuation orders because of smoke, not fire risk.

Many people stayed. That made Seeley Lake an ideal place to track the long-term health of people inundated by wildfire pollution.

So far, researchers have found that people’s lung capacity declined in the first 2 years after the smoke cleared. Chris Migliaccio, PhD, an immunologist with the University of Montana, Missoula, and associates found the percentage of residents whose lung function sank below normal thresholds more than doubled in the first year after the fire and remained low a year after that.

“There’s something wrong there,” Dr. Migliaccio said.

While it’s long been known that smoke can be dangerous when in the thick of it – triggering asthma attacks, cardiac arrests, hospitalizations and more – the Seeley Lake research confirmed what public health experts feared: Wildfire haze can have consequences long after it’s gone.

That doesn’t bode well for the 78 million people in the western United States now confronting historic wildfires.

Toxic air from fires has blanketed California and the Pacific Northwest for weeks now, causing some of the world’s worst air quality. California fires have burned roughly 2.3 million acres so far this year, and the wildfire season isn’t over yet. Oregon estimates 500,000 people in the state have been under a notice to either prepare to evacuate or leave. Smoke from the West Coast blazes has drifted as far away as Europe.

Extreme wildfires are predicted to become a regular occurrence because of climate change. And, as more people increasingly settle in fire-prone places, the risks increase. That’s shifted wildfires from being a perennial reality for rural mountain towns to becoming an annual threat for areas across the West.

Perry Hystad, PhD, an associate professor at Oregon State University, Corvallis, said the Seeley Lake research offers unique insights into wildfire smoke’s impact, which until recently had largely been unexplored. He said similar studies are likely to follow because of this fire season.

“This is the question that everybody is asking,” Dr. Hystad said. “‘I’ve been sitting in smoke for 2 weeks, how concerned should I be?’”

Dr. Migliaccio wants to know whether the lung damage he saw in Seeley Lake is reversible – or even treatable. (Think of an inhaler for asthma or other medication that prevents swollen airways.)

But those discoveries will have to wait. The team hasn’t been able to return to Seeley Lake this year because of the coronavirus pandemic.

Dr. Migliaccio said more research is needed on whether wildfire smoke damages organs besides the lungs, and whether routine exposure makes people more susceptible to diseases.

The combination of the fire season and the pandemic has spurred other questions as well, like whether heavy smoke exposure could lead to more COVID-19 deaths. A recent study showed a spike in influenza cases following major fire seasons.

“Now you have the combination of flu season and COVID and the wildfires,” Dr. Migliaccio said. “How are all these things going to interact come late fall or winter?”
 

A case study

Seeley Lake has long known smoke. It sits in a narrow valley between vast stretches of thick forests.

On a recent September day, Boyd Gossard stood on his back porch and pointed toward the mountains that were ablaze in 2017.

Mr. Gossard, 80, expects to have some summer days veiled in haze. But that year, he said, he could hardly see his neighbor’s house a few hundred feet away.

“I’ve seen a lot of smoke in my career,” said Mr. Gossard, who worked in timber management and served as a wildland firefighter. “But having to just live in it like this was very different. It got to you after a while.”

When Missoula County health officials urged people to leave town and flee the hazardous smoke, many residents stayed close to home. Some said their jobs wouldn’t let them leave. Others didn’t have a place to go – or the money to get there.

Health officials warned those who stayed to avoid exercising and breathing too hard, to remain inside, and to follow steps to make their homes as smoke free as possible. The health department also worked to get air filters to those who needed them most.

But when flames got too close, some people had to sleep outside in campsites on the other side of town.
 

Understanding the science of smoke

One of the known dangers of smoke is particulate matter. Smaller than the width of a human hair, it can bypass a body’s defenses, lodging deep into lungs. Lu Hu, PhD, an atmospheric chemist with the University of Montana, said air quality reports are based on how much of that pollution is in the air.

“It’s like lead; there’s no safe level, but still we have a safety measure for what’s allowable,” Dr. Hu said. “Some things kill you fast and some things kill you slowly.”

While air quality measurements can gauge the overall amount of pollution, they can’t assess which specific toxins people are inhaling. Dr. Hu is collaborating with other scientists to better predict how smoke travels and what pollutants people actually breathe.

He said smoke’s chemistry changes based on how far it travels and what’s burning, among other factors.

Over the past few years, teams of researchers drove trucks along fire lines to collect smoke samples. Other scientists boarded cargo planes and flew into smoke plumes to take samples right from a fire’s source. Still others stationed at a mountain lookout captured smoke drifting in from nearby fires. And ground-level machines at a Missoula site logged data over 2 summers.

Bob Yokelson, PhD, a longtime smoke researcher with the University of Montana, said scientists are getting closer to understanding its contents. And, he said, “it’s not all bad news.”

Temperature and sunlight can change some pollutants over time. Some dangerous particles seem to disappear. But others, such as ozone, can increase as smoke ages.

Dr. Yokelson said scientists are still a long way from determining a safe level of exposure to the hundred-odd pollutants in smoke.

“We can complete the circle by measuring not only what’s in smoke, but measuring what’s happening to the people who breathe it,” Dr. Yokelson said. “That’s where the future of health research on smoke is going to go.”
 

Coping with nowhere to flee

In the meantime, those studying wildland smoke hope what they’ve learned so far can better prepare people to live in the haze when evacuation isn’t an option.

Joan Wollan, 82, was one of the Seeley Lake study participants. She stayed put during the 2017 fire because her house at the time sat on a border of the evacuation zone. The air made her eyes burn and her husband cough. She ordered air filters to create cleaner air inside her home, which helped.

On a recent day, the air in Mrs. Wollan’s new neighborhood in Missoula turned that familiar gray-orange as traces of fires from elsewhere appeared. Local health officials warned that western Montana could get hit by some of the worst air quality the state had seen since those 2017 fires.

If it got bad enough, Mrs. Wollan said, she’d get the filters out of storage or look for a way to get to cleaner air – “if there is someplace in Montana that isn’t smoky.”

KHN (Kaiser Health News) is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

When researchers arrived in Seeley Lake, Mont., a town tucked in the northern Rockies, 3 years ago, they could still smell the smoke a day after it cleared from devastating wildfires. Their plan was to chart how long it took for people to recover from living for 7 weeks surrounded by relentless smoke.

They still don’t know, because most residents haven’t recovered. In fact, they’ve gotten worse.

Forest fires had funneled hazardous air into Seeley Lake, a town of fewer than 2,000 people, for 49 days. The air quality was so bad that on some days the monitoring stations couldn’t measure the extent of the pollution. The intensity of the smoke and the length of time residents had been trapped in it were unprecedented, prompting county officials to issue their first evacuation orders because of smoke, not fire risk.

Many people stayed. That made Seeley Lake an ideal place to track the long-term health of people inundated by wildfire pollution.

So far, researchers have found that people’s lung capacity declined in the first 2 years after the smoke cleared. Chris Migliaccio, PhD, an immunologist with the University of Montana, Missoula, and associates found the percentage of residents whose lung function sank below normal thresholds more than doubled in the first year after the fire and remained low a year after that.

“There’s something wrong there,” Dr. Migliaccio said.

While it’s long been known that smoke can be dangerous when in the thick of it – triggering asthma attacks, cardiac arrests, hospitalizations and more – the Seeley Lake research confirmed what public health experts feared: Wildfire haze can have consequences long after it’s gone.

That doesn’t bode well for the 78 million people in the western United States now confronting historic wildfires.

Toxic air from fires has blanketed California and the Pacific Northwest for weeks now, causing some of the world’s worst air quality. California fires have burned roughly 2.3 million acres so far this year, and the wildfire season isn’t over yet. Oregon estimates 500,000 people in the state have been under a notice to either prepare to evacuate or leave. Smoke from the West Coast blazes has drifted as far away as Europe.

Extreme wildfires are predicted to become a regular occurrence because of climate change. And, as more people increasingly settle in fire-prone places, the risks increase. That’s shifted wildfires from being a perennial reality for rural mountain towns to becoming an annual threat for areas across the West.

Perry Hystad, PhD, an associate professor at Oregon State University, Corvallis, said the Seeley Lake research offers unique insights into wildfire smoke’s impact, which until recently had largely been unexplored. He said similar studies are likely to follow because of this fire season.

“This is the question that everybody is asking,” Dr. Hystad said. “‘I’ve been sitting in smoke for 2 weeks, how concerned should I be?’”

Dr. Migliaccio wants to know whether the lung damage he saw in Seeley Lake is reversible – or even treatable. (Think of an inhaler for asthma or other medication that prevents swollen airways.)

But those discoveries will have to wait. The team hasn’t been able to return to Seeley Lake this year because of the coronavirus pandemic.

Dr. Migliaccio said more research is needed on whether wildfire smoke damages organs besides the lungs, and whether routine exposure makes people more susceptible to diseases.

The combination of the fire season and the pandemic has spurred other questions as well, like whether heavy smoke exposure could lead to more COVID-19 deaths. A recent study showed a spike in influenza cases following major fire seasons.

“Now you have the combination of flu season and COVID and the wildfires,” Dr. Migliaccio said. “How are all these things going to interact come late fall or winter?”
 

A case study

Seeley Lake has long known smoke. It sits in a narrow valley between vast stretches of thick forests.

On a recent September day, Boyd Gossard stood on his back porch and pointed toward the mountains that were ablaze in 2017.

Mr. Gossard, 80, expects to have some summer days veiled in haze. But that year, he said, he could hardly see his neighbor’s house a few hundred feet away.

“I’ve seen a lot of smoke in my career,” said Mr. Gossard, who worked in timber management and served as a wildland firefighter. “But having to just live in it like this was very different. It got to you after a while.”

When Missoula County health officials urged people to leave town and flee the hazardous smoke, many residents stayed close to home. Some said their jobs wouldn’t let them leave. Others didn’t have a place to go – or the money to get there.

Health officials warned those who stayed to avoid exercising and breathing too hard, to remain inside, and to follow steps to make their homes as smoke free as possible. The health department also worked to get air filters to those who needed them most.

But when flames got too close, some people had to sleep outside in campsites on the other side of town.
 

Understanding the science of smoke

One of the known dangers of smoke is particulate matter. Smaller than the width of a human hair, it can bypass a body’s defenses, lodging deep into lungs. Lu Hu, PhD, an atmospheric chemist with the University of Montana, said air quality reports are based on how much of that pollution is in the air.

“It’s like lead; there’s no safe level, but still we have a safety measure for what’s allowable,” Dr. Hu said. “Some things kill you fast and some things kill you slowly.”

While air quality measurements can gauge the overall amount of pollution, they can’t assess which specific toxins people are inhaling. Dr. Hu is collaborating with other scientists to better predict how smoke travels and what pollutants people actually breathe.

He said smoke’s chemistry changes based on how far it travels and what’s burning, among other factors.

Over the past few years, teams of researchers drove trucks along fire lines to collect smoke samples. Other scientists boarded cargo planes and flew into smoke plumes to take samples right from a fire’s source. Still others stationed at a mountain lookout captured smoke drifting in from nearby fires. And ground-level machines at a Missoula site logged data over 2 summers.

Bob Yokelson, PhD, a longtime smoke researcher with the University of Montana, said scientists are getting closer to understanding its contents. And, he said, “it’s not all bad news.”

Temperature and sunlight can change some pollutants over time. Some dangerous particles seem to disappear. But others, such as ozone, can increase as smoke ages.

Dr. Yokelson said scientists are still a long way from determining a safe level of exposure to the hundred-odd pollutants in smoke.

“We can complete the circle by measuring not only what’s in smoke, but measuring what’s happening to the people who breathe it,” Dr. Yokelson said. “That’s where the future of health research on smoke is going to go.”
 

Coping with nowhere to flee

In the meantime, those studying wildland smoke hope what they’ve learned so far can better prepare people to live in the haze when evacuation isn’t an option.

Joan Wollan, 82, was one of the Seeley Lake study participants. She stayed put during the 2017 fire because her house at the time sat on a border of the evacuation zone. The air made her eyes burn and her husband cough. She ordered air filters to create cleaner air inside her home, which helped.

On a recent day, the air in Mrs. Wollan’s new neighborhood in Missoula turned that familiar gray-orange as traces of fires from elsewhere appeared. Local health officials warned that western Montana could get hit by some of the worst air quality the state had seen since those 2017 fires.

If it got bad enough, Mrs. Wollan said, she’d get the filters out of storage or look for a way to get to cleaner air – “if there is someplace in Montana that isn’t smoky.”

KHN (Kaiser Health News) is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

When researchers arrived in Seeley Lake, Mont., a town tucked in the northern Rockies, 3 years ago, they could still smell the smoke a day after it cleared from devastating wildfires. Their plan was to chart how long it took for people to recover from living for 7 weeks surrounded by relentless smoke.

They still don’t know, because most residents haven’t recovered. In fact, they’ve gotten worse.

Forest fires had funneled hazardous air into Seeley Lake, a town of fewer than 2,000 people, for 49 days. The air quality was so bad that on some days the monitoring stations couldn’t measure the extent of the pollution. The intensity of the smoke and the length of time residents had been trapped in it were unprecedented, prompting county officials to issue their first evacuation orders because of smoke, not fire risk.

Many people stayed. That made Seeley Lake an ideal place to track the long-term health of people inundated by wildfire pollution.

So far, researchers have found that people’s lung capacity declined in the first 2 years after the smoke cleared. Chris Migliaccio, PhD, an immunologist with the University of Montana, Missoula, and associates found the percentage of residents whose lung function sank below normal thresholds more than doubled in the first year after the fire and remained low a year after that.

“There’s something wrong there,” Dr. Migliaccio said.

While it’s long been known that smoke can be dangerous when in the thick of it – triggering asthma attacks, cardiac arrests, hospitalizations and more – the Seeley Lake research confirmed what public health experts feared: Wildfire haze can have consequences long after it’s gone.

That doesn’t bode well for the 78 million people in the western United States now confronting historic wildfires.

Toxic air from fires has blanketed California and the Pacific Northwest for weeks now, causing some of the world’s worst air quality. California fires have burned roughly 2.3 million acres so far this year, and the wildfire season isn’t over yet. Oregon estimates 500,000 people in the state have been under a notice to either prepare to evacuate or leave. Smoke from the West Coast blazes has drifted as far away as Europe.

Extreme wildfires are predicted to become a regular occurrence because of climate change. And, as more people increasingly settle in fire-prone places, the risks increase. That’s shifted wildfires from being a perennial reality for rural mountain towns to becoming an annual threat for areas across the West.

Perry Hystad, PhD, an associate professor at Oregon State University, Corvallis, said the Seeley Lake research offers unique insights into wildfire smoke’s impact, which until recently had largely been unexplored. He said similar studies are likely to follow because of this fire season.

“This is the question that everybody is asking,” Dr. Hystad said. “‘I’ve been sitting in smoke for 2 weeks, how concerned should I be?’”

Dr. Migliaccio wants to know whether the lung damage he saw in Seeley Lake is reversible – or even treatable. (Think of an inhaler for asthma or other medication that prevents swollen airways.)

But those discoveries will have to wait. The team hasn’t been able to return to Seeley Lake this year because of the coronavirus pandemic.

Dr. Migliaccio said more research is needed on whether wildfire smoke damages organs besides the lungs, and whether routine exposure makes people more susceptible to diseases.

The combination of the fire season and the pandemic has spurred other questions as well, like whether heavy smoke exposure could lead to more COVID-19 deaths. A recent study showed a spike in influenza cases following major fire seasons.

“Now you have the combination of flu season and COVID and the wildfires,” Dr. Migliaccio said. “How are all these things going to interact come late fall or winter?”
 

A case study

Seeley Lake has long known smoke. It sits in a narrow valley between vast stretches of thick forests.

On a recent September day, Boyd Gossard stood on his back porch and pointed toward the mountains that were ablaze in 2017.

Mr. Gossard, 80, expects to have some summer days veiled in haze. But that year, he said, he could hardly see his neighbor’s house a few hundred feet away.

“I’ve seen a lot of smoke in my career,” said Mr. Gossard, who worked in timber management and served as a wildland firefighter. “But having to just live in it like this was very different. It got to you after a while.”

When Missoula County health officials urged people to leave town and flee the hazardous smoke, many residents stayed close to home. Some said their jobs wouldn’t let them leave. Others didn’t have a place to go – or the money to get there.

Health officials warned those who stayed to avoid exercising and breathing too hard, to remain inside, and to follow steps to make their homes as smoke free as possible. The health department also worked to get air filters to those who needed them most.

But when flames got too close, some people had to sleep outside in campsites on the other side of town.
 

Understanding the science of smoke

One of the known dangers of smoke is particulate matter. Smaller than the width of a human hair, it can bypass a body’s defenses, lodging deep into lungs. Lu Hu, PhD, an atmospheric chemist with the University of Montana, said air quality reports are based on how much of that pollution is in the air.

“It’s like lead; there’s no safe level, but still we have a safety measure for what’s allowable,” Dr. Hu said. “Some things kill you fast and some things kill you slowly.”

While air quality measurements can gauge the overall amount of pollution, they can’t assess which specific toxins people are inhaling. Dr. Hu is collaborating with other scientists to better predict how smoke travels and what pollutants people actually breathe.

He said smoke’s chemistry changes based on how far it travels and what’s burning, among other factors.

Over the past few years, teams of researchers drove trucks along fire lines to collect smoke samples. Other scientists boarded cargo planes and flew into smoke plumes to take samples right from a fire’s source. Still others stationed at a mountain lookout captured smoke drifting in from nearby fires. And ground-level machines at a Missoula site logged data over 2 summers.

Bob Yokelson, PhD, a longtime smoke researcher with the University of Montana, said scientists are getting closer to understanding its contents. And, he said, “it’s not all bad news.”

Temperature and sunlight can change some pollutants over time. Some dangerous particles seem to disappear. But others, such as ozone, can increase as smoke ages.

Dr. Yokelson said scientists are still a long way from determining a safe level of exposure to the hundred-odd pollutants in smoke.

“We can complete the circle by measuring not only what’s in smoke, but measuring what’s happening to the people who breathe it,” Dr. Yokelson said. “That’s where the future of health research on smoke is going to go.”
 

Coping with nowhere to flee

In the meantime, those studying wildland smoke hope what they’ve learned so far can better prepare people to live in the haze when evacuation isn’t an option.

Joan Wollan, 82, was one of the Seeley Lake study participants. She stayed put during the 2017 fire because her house at the time sat on a border of the evacuation zone. The air made her eyes burn and her husband cough. She ordered air filters to create cleaner air inside her home, which helped.

On a recent day, the air in Mrs. Wollan’s new neighborhood in Missoula turned that familiar gray-orange as traces of fires from elsewhere appeared. Local health officials warned that western Montana could get hit by some of the worst air quality the state had seen since those 2017 fires.

If it got bad enough, Mrs. Wollan said, she’d get the filters out of storage or look for a way to get to cleaner air – “if there is someplace in Montana that isn’t smoky.”

KHN (Kaiser Health News) is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

Having low serum vitamin D levels was an independent risk factor for having symptomatic COVID-19 with respiratory distress requiring admission to intensive care – as opposed to having mild COVID-19 – and for not surviving, in a new study from Italy.

“Our data give strong observational support to previous suggestions that reduced vitamin D levels may favor the appearance of severe respiratory dysfunction and increase the mortality risk in patients affected with COVID-19,” the researchers report.

Luigi Gennari, MD, PhD, Department of Medicine, Surgery, and Neurosciences, University of Siena, Italy, presented these findings during the virtual American Society of Bone and Mineral Research (ASBMR) 2020 annual meeting.

Gennari told Medscape Medical News that this analysis suggests determining vitamin D levels (25 hydroxyvitamin D) in people testing positive for SARS-Cov-2 infection might help predict their risk of severe disease.

However, further research is needed to explore whether vitamin D supplements could prevent the risk of respiratory failure in patients with SARS-Cov-2 infection, he stressed.

In the meantime, Gennari said: “I believe that, particularly in the winter season (when the solar ultraviolet-B (UVB) radiation exposure does not allow the skin to synthesize vitamin D in most countries), the use of vitamin D supplementation and correction of vitamin D deficiency might be of major relevance for the reduction of the clinical burden of the ongoing and future outbreaks of SARS-CoV-2 infection.

Invited to comment, David Meltzer, MD, PhD, chief of hospital medicine at University of Chicago Medicine, Illinois, who was not involved with the study, agrees.

“I think this body of work suggests that people should be taking supplements if they cannot increase sun exposure on a sustained basis,” Meltzer said. “The abstract supports multiple prior findings that suggest that higher vitamin D levels are associated with improved outcomes.”

And JoAnn E. Manson, MD, DrPH, of Harvard Medical School and Brigham and Women’s Hospital, who was not involved with the research but has spoken about the topic in a video report for Medscape, said: “We know from several studies that a low vitamin D level is associated with a higher risk of having COVID-19 and severe illness, but correlation does not prove causation.”

“I think that improving vitamin D status is a promising way to reduce the risk of severe illness, but we need randomized controlled trials to prove cause and effect,” she told Medscape Medical News.

103 patients with severe COVID-19, 52 with mild COVID-19, 206 controls

Gennari said several lines of evidence suggest that vitamin D deficiency might be a risk factor for COVID-19 severity.

Countries with lower average levels of vitamin D or lower UVB radiation exposure have higher COVID-19 mortality, and “demographic groups known to be at higher risk of vitamin D deficiency (such as black individuals, the elderly, nursing home residents, and those with obesity and diabetes) are at high risk of COVID-19 hospitalization/mortality, he noted.

There is a high prevalence of vitamin D deficiency in Italy, where mortality rates from COVID-19 have been particularly high.

To examine the relationship between vitamin D levels and COVID-19 severity/mortality, the researchers studied three groups:

• 103 symptomatic patients with COVID-19 with respiratory insufficiency who were admitted to a Milan hospital from March 9 to April 30.
• 52 patients with mild COVID-19, recruited from patients and staff from a nearby nursing home who had a positive test for COVID-19.
• 206 healthy controls, matched 2:1 with symptomatic patients of the same age, weight, and gender, from 3174 patients who had vitamin D measured during a routine check-up from January to March 2020.

Patients in the hospitalized group had lower mean vitamin D levels (18.2 ng/mL) than those with mild COVID-19 (30.3 ng/mL) or those in the control group (25.4 ng/mL).

Patients with symptomatic versus mild COVID-19 were slightly older and more likely to have at least one comorbidity and less likely to be taking a vitamin D supplement at baseline (30% vs 79%).

Among symptomatic patients, mean vitamin D levels were inversely associated with interleukin (IL)-6 and C-reactive protein, “both of which are a direct expression of the inflammatory status,” Gennari noted.

About half of the hospitalized patients (49) were admitted to a ward and discharged after a mean stay of 16 days (none died).

The other 54 hospitalized patients were admitted to the intensive care unit with severe acute respiratory distress; 38 patients received continuous positive airway pressure (CPAP) and 16 patients received endotracheal intubation.

Of the 54 patients admitted to ICU, 19 patients died from respiratory distress after a mean of 19 days, “consistent with the literature,” and the other 35 patients were discharged after a mean of 21 days.

Patients with severe COVID-19 who were admitted to the ICU, as opposed to a ward, were more likely to be male, have at least one comorbidity, have higher baseline IL-6 levels and neutrophil counts, and lower lymphocyte and platelet counts.

They also had lower mean vitamin D levels (14.4 vs 22.4 ng/mL) and were more likely to have vitamin D deficiency (vitamin D <20 ng/mL; 80% vs. 45%).  

Patients admitted to ICU who died had lower baseline vitamin D levels than those who survived (13.2 vs. 19.3 ng/mL).

Vitamin D levels were inversely associated with respiratory distress requiring ICU admission (odds ratio, 1.06; P = .038) and with mortality (OR, 1.18, P = 029), independent of IL-6 levels and other comorbidities.

“That vitamin D levels are associated with improved outcomes independent of IL-6 could reflect that IL-6 is an imperfect measure of the inflammatory process or that vitamin D is related to outcomes for other reasons, such as enhancement of innate or adaptive immunity,” said Meltzer.

He added that “this is not to exclude the possibility that vitamin D has important immunomodulatory effects.”

Gennari, Meltzer, and Manson have reported no relevant financial relationships.

This article first appeared on Medscape.com.

Having low serum vitamin D levels was an independent risk factor for having symptomatic COVID-19 with respiratory distress requiring admission to intensive care – as opposed to having mild COVID-19 – and for not surviving, in a new study from Italy.

“Our data give strong observational support to previous suggestions that reduced vitamin D levels may favor the appearance of severe respiratory dysfunction and increase the mortality risk in patients affected with COVID-19,” the researchers report.

Luigi Gennari, MD, PhD, Department of Medicine, Surgery, and Neurosciences, University of Siena, Italy, presented these findings during the virtual American Society of Bone and Mineral Research (ASBMR) 2020 annual meeting.

Gennari told Medscape Medical News that this analysis suggests determining vitamin D levels (25 hydroxyvitamin D) in people testing positive for SARS-Cov-2 infection might help predict their risk of severe disease.

However, further research is needed to explore whether vitamin D supplements could prevent the risk of respiratory failure in patients with SARS-Cov-2 infection, he stressed.

In the meantime, Gennari said: “I believe that, particularly in the winter season (when the solar ultraviolet-B (UVB) radiation exposure does not allow the skin to synthesize vitamin D in most countries), the use of vitamin D supplementation and correction of vitamin D deficiency might be of major relevance for the reduction of the clinical burden of the ongoing and future outbreaks of SARS-CoV-2 infection.

Invited to comment, David Meltzer, MD, PhD, chief of hospital medicine at University of Chicago Medicine, Illinois, who was not involved with the study, agrees.

“I think this body of work suggests that people should be taking supplements if they cannot increase sun exposure on a sustained basis,” Meltzer said. “The abstract supports multiple prior findings that suggest that higher vitamin D levels are associated with improved outcomes.”

And JoAnn E. Manson, MD, DrPH, of Harvard Medical School and Brigham and Women’s Hospital, who was not involved with the research but has spoken about the topic in a video report for Medscape, said: “We know from several studies that a low vitamin D level is associated with a higher risk of having COVID-19 and severe illness, but correlation does not prove causation.”

“I think that improving vitamin D status is a promising way to reduce the risk of severe illness, but we need randomized controlled trials to prove cause and effect,” she told Medscape Medical News.

103 patients with severe COVID-19, 52 with mild COVID-19, 206 controls

Gennari said several lines of evidence suggest that vitamin D deficiency might be a risk factor for COVID-19 severity.

Countries with lower average levels of vitamin D or lower UVB radiation exposure have higher COVID-19 mortality, and “demographic groups known to be at higher risk of vitamin D deficiency (such as black individuals, the elderly, nursing home residents, and those with obesity and diabetes) are at high risk of COVID-19 hospitalization/mortality, he noted.

There is a high prevalence of vitamin D deficiency in Italy, where mortality rates from COVID-19 have been particularly high.

To examine the relationship between vitamin D levels and COVID-19 severity/mortality, the researchers studied three groups:

• 103 symptomatic patients with COVID-19 with respiratory insufficiency who were admitted to a Milan hospital from March 9 to April 30.
• 52 patients with mild COVID-19, recruited from patients and staff from a nearby nursing home who had a positive test for COVID-19.
• 206 healthy controls, matched 2:1 with symptomatic patients of the same age, weight, and gender, from 3174 patients who had vitamin D measured during a routine check-up from January to March 2020.

Patients in the hospitalized group had lower mean vitamin D levels (18.2 ng/mL) than those with mild COVID-19 (30.3 ng/mL) or those in the control group (25.4 ng/mL).

Patients with symptomatic versus mild COVID-19 were slightly older and more likely to have at least one comorbidity and less likely to be taking a vitamin D supplement at baseline (30% vs 79%).

Among symptomatic patients, mean vitamin D levels were inversely associated with interleukin (IL)-6 and C-reactive protein, “both of which are a direct expression of the inflammatory status,” Gennari noted.

About half of the hospitalized patients (49) were admitted to a ward and discharged after a mean stay of 16 days (none died).

The other 54 hospitalized patients were admitted to the intensive care unit with severe acute respiratory distress; 38 patients received continuous positive airway pressure (CPAP) and 16 patients received endotracheal intubation.

Of the 54 patients admitted to ICU, 19 patients died from respiratory distress after a mean of 19 days, “consistent with the literature,” and the other 35 patients were discharged after a mean of 21 days.

Patients with severe COVID-19 who were admitted to the ICU, as opposed to a ward, were more likely to be male, have at least one comorbidity, have higher baseline IL-6 levels and neutrophil counts, and lower lymphocyte and platelet counts.

They also had lower mean vitamin D levels (14.4 vs 22.4 ng/mL) and were more likely to have vitamin D deficiency (vitamin D <20 ng/mL; 80% vs. 45%).  

Patients admitted to ICU who died had lower baseline vitamin D levels than those who survived (13.2 vs. 19.3 ng/mL).

Vitamin D levels were inversely associated with respiratory distress requiring ICU admission (odds ratio, 1.06; P = .038) and with mortality (OR, 1.18, P = 029), independent of IL-6 levels and other comorbidities.

“That vitamin D levels are associated with improved outcomes independent of IL-6 could reflect that IL-6 is an imperfect measure of the inflammatory process or that vitamin D is related to outcomes for other reasons, such as enhancement of innate or adaptive immunity,” said Meltzer.

He added that “this is not to exclude the possibility that vitamin D has important immunomodulatory effects.”

Gennari, Meltzer, and Manson have reported no relevant financial relationships.

This article first appeared on Medscape.com.

Having low serum vitamin D levels was an independent risk factor for having symptomatic COVID-19 with respiratory distress requiring admission to intensive care – as opposed to having mild COVID-19 – and for not surviving, in a new study from Italy.

“Our data give strong observational support to previous suggestions that reduced vitamin D levels may favor the appearance of severe respiratory dysfunction and increase the mortality risk in patients affected with COVID-19,” the researchers report.

Luigi Gennari, MD, PhD, Department of Medicine, Surgery, and Neurosciences, University of Siena, Italy, presented these findings during the virtual American Society of Bone and Mineral Research (ASBMR) 2020 annual meeting.

Gennari told Medscape Medical News that this analysis suggests determining vitamin D levels (25 hydroxyvitamin D) in people testing positive for SARS-Cov-2 infection might help predict their risk of severe disease.

However, further research is needed to explore whether vitamin D supplements could prevent the risk of respiratory failure in patients with SARS-Cov-2 infection, he stressed.

In the meantime, Gennari said: “I believe that, particularly in the winter season (when the solar ultraviolet-B (UVB) radiation exposure does not allow the skin to synthesize vitamin D in most countries), the use of vitamin D supplementation and correction of vitamin D deficiency might be of major relevance for the reduction of the clinical burden of the ongoing and future outbreaks of SARS-CoV-2 infection.

Invited to comment, David Meltzer, MD, PhD, chief of hospital medicine at University of Chicago Medicine, Illinois, who was not involved with the study, agrees.

“I think this body of work suggests that people should be taking supplements if they cannot increase sun exposure on a sustained basis,” Meltzer said. “The abstract supports multiple prior findings that suggest that higher vitamin D levels are associated with improved outcomes.”

And JoAnn E. Manson, MD, DrPH, of Harvard Medical School and Brigham and Women’s Hospital, who was not involved with the research but has spoken about the topic in a video report for Medscape, said: “We know from several studies that a low vitamin D level is associated with a higher risk of having COVID-19 and severe illness, but correlation does not prove causation.”

“I think that improving vitamin D status is a promising way to reduce the risk of severe illness, but we need randomized controlled trials to prove cause and effect,” she told Medscape Medical News.

103 patients with severe COVID-19, 52 with mild COVID-19, 206 controls

Gennari said several lines of evidence suggest that vitamin D deficiency might be a risk factor for COVID-19 severity.

Countries with lower average levels of vitamin D or lower UVB radiation exposure have higher COVID-19 mortality, and “demographic groups known to be at higher risk of vitamin D deficiency (such as black individuals, the elderly, nursing home residents, and those with obesity and diabetes) are at high risk of COVID-19 hospitalization/mortality, he noted.

There is a high prevalence of vitamin D deficiency in Italy, where mortality rates from COVID-19 have been particularly high.

To examine the relationship between vitamin D levels and COVID-19 severity/mortality, the researchers studied three groups:

• 103 symptomatic patients with COVID-19 with respiratory insufficiency who were admitted to a Milan hospital from March 9 to April 30.
• 52 patients with mild COVID-19, recruited from patients and staff from a nearby nursing home who had a positive test for COVID-19.
• 206 healthy controls, matched 2:1 with symptomatic patients of the same age, weight, and gender, from 3174 patients who had vitamin D measured during a routine check-up from January to March 2020.

Patients in the hospitalized group had lower mean vitamin D levels (18.2 ng/mL) than those with mild COVID-19 (30.3 ng/mL) or those in the control group (25.4 ng/mL).

Patients with symptomatic versus mild COVID-19 were slightly older and more likely to have at least one comorbidity and less likely to be taking a vitamin D supplement at baseline (30% vs 79%).

Among symptomatic patients, mean vitamin D levels were inversely associated with interleukin (IL)-6 and C-reactive protein, “both of which are a direct expression of the inflammatory status,” Gennari noted.

About half of the hospitalized patients (49) were admitted to a ward and discharged after a mean stay of 16 days (none died).

The other 54 hospitalized patients were admitted to the intensive care unit with severe acute respiratory distress; 38 patients received continuous positive airway pressure (CPAP) and 16 patients received endotracheal intubation.

Of the 54 patients admitted to ICU, 19 patients died from respiratory distress after a mean of 19 days, “consistent with the literature,” and the other 35 patients were discharged after a mean of 21 days.

Patients with severe COVID-19 who were admitted to the ICU, as opposed to a ward, were more likely to be male, have at least one comorbidity, have higher baseline IL-6 levels and neutrophil counts, and lower lymphocyte and platelet counts.

They also had lower mean vitamin D levels (14.4 vs 22.4 ng/mL) and were more likely to have vitamin D deficiency (vitamin D <20 ng/mL; 80% vs. 45%).  

Patients admitted to ICU who died had lower baseline vitamin D levels than those who survived (13.2 vs. 19.3 ng/mL).

Vitamin D levels were inversely associated with respiratory distress requiring ICU admission (odds ratio, 1.06; P = .038) and with mortality (OR, 1.18, P = 029), independent of IL-6 levels and other comorbidities.

“That vitamin D levels are associated with improved outcomes independent of IL-6 could reflect that IL-6 is an imperfect measure of the inflammatory process or that vitamin D is related to outcomes for other reasons, such as enhancement of innate or adaptive immunity,” said Meltzer.

He added that “this is not to exclude the possibility that vitamin D has important immunomodulatory effects.”

Gennari, Meltzer, and Manson have reported no relevant financial relationships.

This article first appeared on Medscape.com.

One year into the implementation of the Mission Act, the US Department of Veterans Affairs (VA) continues to expand a wide-ranging third-party-administered program to boost the access of veterans to the civilian medical system, a VA official told colleagues at the virtual 2020 annual meeting of the Association of VA Hematology/Oncology (AVAHO). “VA has given to the third-party administrators what they do well, which is payment of claims, and VA has taken back what we think we can do better—scheduling, care coordination, and customer service,” said Elizabeth Brill, MD, MBA, chief medical officer and senior adviser to the acting assistant undersecretary for Health for Community Care.

            The 2 third-party contractors that run the Community Care Network (CCN) are Optum and TriWest. Both companies now proces patients at all VA medical facilities in the continental US. Optum serves all the states that are entirely (or mainly) in the Central and Eastern Time Zones—except for Texas—plus Puerto Rico, Washington D.C., and the US Virgin Islands. TriWest serves Texas, Hawaii, and the states that are entirely (or mainly) in the Mountain and Pacific Time Zones. The VA has not yet assigned any contractor for Alaska, Guam, American Samoa, and the Northern Mariana Islands.

“We have tried to consolidate as much as possible into the Community Care Network, pulling in a lot of services that were not previously covered, but it’s still not covering 100% of all services that veterans need outside VA medical centers,” said Brill.

Although the VA continues to rely on Veterans Care Agreements, in which health care providers contract directly with the VA, “the main focus of community care is the Community Care Network.” Said Brill. In a pair of regions—encompassing the Midwest, Northeast, and a few other states—90% of private health services are now provided through the network, she said.

One benefit of the new system is a better experience for the health care providers who work with Optum and TriWest. These administrators are responsible for finding providers and providing them with credentials based on appropriate criteria, Brill said. “In prior days, VA paid community providers directly, and some of you may be familiar with the delays that occurred in the system,” she said. “In the new system, we have third-party administrators who pay the providers quickly, and then VA pays them.”

Urgent care services are now available through CCN in most of the continental US and will be expanded to Texas, the Mountain region and the West by the end of September, she said. “We’ve been very pleased to see the response.” Meanwhile, flu shots for enrolled veterans are now available through the system via 60,000 locations.

There are requirements for private health care providers: They must meet new training requirements and submit claims within 180 days. Patients also must meet standards to get community care. For example, patients are eligible for access if the VA can’t serve them within a 30-minute drive time for primary care and mental health care and a 60-minute drive time for specialty care. Similarly, veterans are eligible if they cannot get an appointment within 20 days for primary and mental health care and 28 days for specialty care.

However, Brill insisted, the Mission Act is “not a move toward privatization. Internal VA care is just as important as external VA care,” she said. “This just gives them more choice.”

Brill also noted that there’s more to the Mission Act than expanded access. For example, an expansion of the Program of Comprehensive Assistance for Family Caregivers Program “will start kicking in this fall and the winter,” she said. It will include families of veterans from all eras of service.

The act also is designed to improve infrastructure, although the coronavirus pandemic may disrupt timing, she said. And, she added, it will strengthen the VA’s ability to recruit and keep health care providers through projects like a new scholarship program and more access to medical education debt reduction. 

One year into the implementation of the Mission Act, the US Department of Veterans Affairs (VA) continues to expand a wide-ranging third-party-administered program to boost the access of veterans to the civilian medical system, a VA official told colleagues at the virtual 2020 annual meeting of the Association of VA Hematology/Oncology (AVAHO). “VA has given to the third-party administrators what they do well, which is payment of claims, and VA has taken back what we think we can do better—scheduling, care coordination, and customer service,” said Elizabeth Brill, MD, MBA, chief medical officer and senior adviser to the acting assistant undersecretary for Health for Community Care.

            The 2 third-party contractors that run the Community Care Network (CCN) are Optum and TriWest. Both companies now proces patients at all VA medical facilities in the continental US. Optum serves all the states that are entirely (or mainly) in the Central and Eastern Time Zones—except for Texas—plus Puerto Rico, Washington D.C., and the US Virgin Islands. TriWest serves Texas, Hawaii, and the states that are entirely (or mainly) in the Mountain and Pacific Time Zones. The VA has not yet assigned any contractor for Alaska, Guam, American Samoa, and the Northern Mariana Islands.

“We have tried to consolidate as much as possible into the Community Care Network, pulling in a lot of services that were not previously covered, but it’s still not covering 100% of all services that veterans need outside VA medical centers,” said Brill.

Although the VA continues to rely on Veterans Care Agreements, in which health care providers contract directly with the VA, “the main focus of community care is the Community Care Network.” Said Brill. In a pair of regions—encompassing the Midwest, Northeast, and a few other states—90% of private health services are now provided through the network, she said.

One benefit of the new system is a better experience for the health care providers who work with Optum and TriWest. These administrators are responsible for finding providers and providing them with credentials based on appropriate criteria, Brill said. “In prior days, VA paid community providers directly, and some of you may be familiar with the delays that occurred in the system,” she said. “In the new system, we have third-party administrators who pay the providers quickly, and then VA pays them.”

Urgent care services are now available through CCN in most of the continental US and will be expanded to Texas, the Mountain region and the West by the end of September, she said. “We’ve been very pleased to see the response.” Meanwhile, flu shots for enrolled veterans are now available through the system via 60,000 locations.

There are requirements for private health care providers: They must meet new training requirements and submit claims within 180 days. Patients also must meet standards to get community care. For example, patients are eligible for access if the VA can’t serve them within a 30-minute drive time for primary care and mental health care and a 60-minute drive time for specialty care. Similarly, veterans are eligible if they cannot get an appointment within 20 days for primary and mental health care and 28 days for specialty care.

However, Brill insisted, the Mission Act is “not a move toward privatization. Internal VA care is just as important as external VA care,” she said. “This just gives them more choice.”

Brill also noted that there’s more to the Mission Act than expanded access. For example, an expansion of the Program of Comprehensive Assistance for Family Caregivers Program “will start kicking in this fall and the winter,” she said. It will include families of veterans from all eras of service.

The act also is designed to improve infrastructure, although the coronavirus pandemic may disrupt timing, she said. And, she added, it will strengthen the VA’s ability to recruit and keep health care providers through projects like a new scholarship program and more access to medical education debt reduction. 

One year into the implementation of the Mission Act, the US Department of Veterans Affairs (VA) continues to expand a wide-ranging third-party-administered program to boost the access of veterans to the civilian medical system, a VA official told colleagues at the virtual 2020 annual meeting of the Association of VA Hematology/Oncology (AVAHO). “VA has given to the third-party administrators what they do well, which is payment of claims, and VA has taken back what we think we can do better—scheduling, care coordination, and customer service,” said Elizabeth Brill, MD, MBA, chief medical officer and senior adviser to the acting assistant undersecretary for Health for Community Care.

            The 2 third-party contractors that run the Community Care Network (CCN) are Optum and TriWest. Both companies now proces patients at all VA medical facilities in the continental US. Optum serves all the states that are entirely (or mainly) in the Central and Eastern Time Zones—except for Texas—plus Puerto Rico, Washington D.C., and the US Virgin Islands. TriWest serves Texas, Hawaii, and the states that are entirely (or mainly) in the Mountain and Pacific Time Zones. The VA has not yet assigned any contractor for Alaska, Guam, American Samoa, and the Northern Mariana Islands.

“We have tried to consolidate as much as possible into the Community Care Network, pulling in a lot of services that were not previously covered, but it’s still not covering 100% of all services that veterans need outside VA medical centers,” said Brill.

Although the VA continues to rely on Veterans Care Agreements, in which health care providers contract directly with the VA, “the main focus of community care is the Community Care Network.” Said Brill. In a pair of regions—encompassing the Midwest, Northeast, and a few other states—90% of private health services are now provided through the network, she said.

One benefit of the new system is a better experience for the health care providers who work with Optum and TriWest. These administrators are responsible for finding providers and providing them with credentials based on appropriate criteria, Brill said. “In prior days, VA paid community providers directly, and some of you may be familiar with the delays that occurred in the system,” she said. “In the new system, we have third-party administrators who pay the providers quickly, and then VA pays them.”

Urgent care services are now available through CCN in most of the continental US and will be expanded to Texas, the Mountain region and the West by the end of September, she said. “We’ve been very pleased to see the response.” Meanwhile, flu shots for enrolled veterans are now available through the system via 60,000 locations.

There are requirements for private health care providers: They must meet new training requirements and submit claims within 180 days. Patients also must meet standards to get community care. For example, patients are eligible for access if the VA can’t serve them within a 30-minute drive time for primary care and mental health care and a 60-minute drive time for specialty care. Similarly, veterans are eligible if they cannot get an appointment within 20 days for primary and mental health care and 28 days for specialty care.

However, Brill insisted, the Mission Act is “not a move toward privatization. Internal VA care is just as important as external VA care,” she said. “This just gives them more choice.”

Brill also noted that there’s more to the Mission Act than expanded access. For example, an expansion of the Program of Comprehensive Assistance for Family Caregivers Program “will start kicking in this fall and the winter,” she said. It will include families of veterans from all eras of service.

The act also is designed to improve infrastructure, although the coronavirus pandemic may disrupt timing, she said. And, she added, it will strengthen the VA’s ability to recruit and keep health care providers through projects like a new scholarship program and more access to medical education debt reduction. 

Human papilloma virus (HPV)-mediated squamous cell carcinoma of the head and neck is on the rise, and the lack of herd immunity in young people will ensure growth for many years to come. “We’re really looking at another 30 to 40 years of HPV and oropharynx cancer growth,” said head and neck cancer surgeon Joseph Califano, MD, deputy director of the Moores Cancer Center at the University of California at San Diego, at the virtual 2020 annual meeting of the Association of VA Hematology/Oncology (AVAHO).

            Califano highlighted a 2019 study that estimated the number of diagnoses of oropharynx cancer cases in the US will grow by half to 30,000 by 2030, with the wide majority (about 25,000) in men. In 2016, the annual number of oropharynx cancer cases was 20,124. “The exponential increase in oropharynx cancer incidence in young white US men has ebbed, and modest increases are occurring/anticipated in cohorts born after 1955,” the study authors wrote.

            “Currently in the United States, we don't have adequate vaccine efficiency to provide herd immunity, particularly for young boys,” said Califano. He added that although HPV vaccinations may create herd immunity in 5 to 10 years, the cancers associated with HPV can take decades to develop so a dip in rates won’t come for many years.

            HPV-associated head and neck squamous cell cancer (HNSCC) affects people at a younger age when compared with other head and neck cancers—a decade or 2 earlier, according to Califano. Many patients are nonsmokers and nondrinkers, he said, and tumors may be painless and asymptomatic.

            It’s also becoming clear that the HPV-associated HNSCC can strike across a widespread area of the oropharynx, including the palatine and lingual tonsils, the nasal cavity, nasopharynx, and hypopharynx (the lower part of the voice box), he said. “It has an even larger footprint than we originally supposed when we realized HPV was a dominant mechanism for development of oropharyngeal cancer,” said Califano.

            Describing the extent of these cancers as an “epidemic,” Califono said a turning point in the understanding of HPV’s role in oropharynx cancers came in a “definitive” 2001 study that reported that HPV-positive patients were much more likely to develop oropharynx cancer (adjusted odds ratio, 14.4). Later research found that HPV-associated oropharynx cancers were more common than HPV-associated cervical cancer. Higher lifetime numbers of vaginal sex and oral sex partners are linked to higher risk of HPV-mediated HNSCC, he said, as is prolonged daily marijuana use.

            Califano emphasized the importance of counseling patients about sexual behaviors linked to the cancers, although it’s also important to consider that “the majority of patients don’t have these risk factors.”

            “The diagnosis is not an indication of infidelity or promiscuity,” he added, recalling that he saw at least one marriage dissolve because of “misunderstandings” regarding how the cancer is caused.  

            There are multiple treatment options. Early-stage oropharynx cancers can be treated with primary excision and staging neck dissection or radiotherapy. Multimodality therapy is appropriate for late-stage cancer and can include concurrent chemotherapy and radiation, primary excision, and treatment with concurrent cisplatinum, depending on the case. Also, “patients do really benefit if they’re enrolled in clinical trials.”

The good news is that HPV-positivity is associated with improved survival in oropharynx cancer, he said. He highlighted a 2019 study that said radiotherapy and cisplatin improve survival in HPV-positive oropharynx cancer patients. “This has become the de-facto standard of care for locally advanced, low-risk HPV-positive oropharynx cancer,” he said.

Califano reported no relevant disclosures.

Human papilloma virus (HPV)-mediated squamous cell carcinoma of the head and neck is on the rise, and the lack of herd immunity in young people will ensure growth for many years to come. “We’re really looking at another 30 to 40 years of HPV and oropharynx cancer growth,” said head and neck cancer surgeon Joseph Califano, MD, deputy director of the Moores Cancer Center at the University of California at San Diego, at the virtual 2020 annual meeting of the Association of VA Hematology/Oncology (AVAHO).

            Califano highlighted a 2019 study that estimated the number of diagnoses of oropharynx cancer cases in the US will grow by half to 30,000 by 2030, with the wide majority (about 25,000) in men. In 2016, the annual number of oropharynx cancer cases was 20,124. “The exponential increase in oropharynx cancer incidence in young white US men has ebbed, and modest increases are occurring/anticipated in cohorts born after 1955,” the study authors wrote.

            “Currently in the United States, we don't have adequate vaccine efficiency to provide herd immunity, particularly for young boys,” said Califano. He added that although HPV vaccinations may create herd immunity in 5 to 10 years, the cancers associated with HPV can take decades to develop so a dip in rates won’t come for many years.

            HPV-associated head and neck squamous cell cancer (HNSCC) affects people at a younger age when compared with other head and neck cancers—a decade or 2 earlier, according to Califano. Many patients are nonsmokers and nondrinkers, he said, and tumors may be painless and asymptomatic.

            It’s also becoming clear that the HPV-associated HNSCC can strike across a widespread area of the oropharynx, including the palatine and lingual tonsils, the nasal cavity, nasopharynx, and hypopharynx (the lower part of the voice box), he said. “It has an even larger footprint than we originally supposed when we realized HPV was a dominant mechanism for development of oropharyngeal cancer,” said Califano.

            Describing the extent of these cancers as an “epidemic,” Califono said a turning point in the understanding of HPV’s role in oropharynx cancers came in a “definitive” 2001 study that reported that HPV-positive patients were much more likely to develop oropharynx cancer (adjusted odds ratio, 14.4). Later research found that HPV-associated oropharynx cancers were more common than HPV-associated cervical cancer. Higher lifetime numbers of vaginal sex and oral sex partners are linked to higher risk of HPV-mediated HNSCC, he said, as is prolonged daily marijuana use.

            Califano emphasized the importance of counseling patients about sexual behaviors linked to the cancers, although it’s also important to consider that “the majority of patients don’t have these risk factors.”

            “The diagnosis is not an indication of infidelity or promiscuity,” he added, recalling that he saw at least one marriage dissolve because of “misunderstandings” regarding how the cancer is caused.  

            There are multiple treatment options. Early-stage oropharynx cancers can be treated with primary excision and staging neck dissection or radiotherapy. Multimodality therapy is appropriate for late-stage cancer and can include concurrent chemotherapy and radiation, primary excision, and treatment with concurrent cisplatinum, depending on the case. Also, “patients do really benefit if they’re enrolled in clinical trials.”

The good news is that HPV-positivity is associated with improved survival in oropharynx cancer, he said. He highlighted a 2019 study that said radiotherapy and cisplatin improve survival in HPV-positive oropharynx cancer patients. “This has become the de-facto standard of care for locally advanced, low-risk HPV-positive oropharynx cancer,” he said.

Califano reported no relevant disclosures.

Human papilloma virus (HPV)-mediated squamous cell carcinoma of the head and neck is on the rise, and the lack of herd immunity in young people will ensure growth for many years to come. “We’re really looking at another 30 to 40 years of HPV and oropharynx cancer growth,” said head and neck cancer surgeon Joseph Califano, MD, deputy director of the Moores Cancer Center at the University of California at San Diego, at the virtual 2020 annual meeting of the Association of VA Hematology/Oncology (AVAHO).

            Califano highlighted a 2019 study that estimated the number of diagnoses of oropharynx cancer cases in the US will grow by half to 30,000 by 2030, with the wide majority (about 25,000) in men. In 2016, the annual number of oropharynx cancer cases was 20,124. “The exponential increase in oropharynx cancer incidence in young white US men has ebbed, and modest increases are occurring/anticipated in cohorts born after 1955,” the study authors wrote.

            “Currently in the United States, we don't have adequate vaccine efficiency to provide herd immunity, particularly for young boys,” said Califano. He added that although HPV vaccinations may create herd immunity in 5 to 10 years, the cancers associated with HPV can take decades to develop so a dip in rates won’t come for many years.

            HPV-associated head and neck squamous cell cancer (HNSCC) affects people at a younger age when compared with other head and neck cancers—a decade or 2 earlier, according to Califano. Many patients are nonsmokers and nondrinkers, he said, and tumors may be painless and asymptomatic.

            It’s also becoming clear that the HPV-associated HNSCC can strike across a widespread area of the oropharynx, including the palatine and lingual tonsils, the nasal cavity, nasopharynx, and hypopharynx (the lower part of the voice box), he said. “It has an even larger footprint than we originally supposed when we realized HPV was a dominant mechanism for development of oropharyngeal cancer,” said Califano.

            Describing the extent of these cancers as an “epidemic,” Califono said a turning point in the understanding of HPV’s role in oropharynx cancers came in a “definitive” 2001 study that reported that HPV-positive patients were much more likely to develop oropharynx cancer (adjusted odds ratio, 14.4). Later research found that HPV-associated oropharynx cancers were more common than HPV-associated cervical cancer. Higher lifetime numbers of vaginal sex and oral sex partners are linked to higher risk of HPV-mediated HNSCC, he said, as is prolonged daily marijuana use.

            Califano emphasized the importance of counseling patients about sexual behaviors linked to the cancers, although it’s also important to consider that “the majority of patients don’t have these risk factors.”

            “The diagnosis is not an indication of infidelity or promiscuity,” he added, recalling that he saw at least one marriage dissolve because of “misunderstandings” regarding how the cancer is caused.  

            There are multiple treatment options. Early-stage oropharynx cancers can be treated with primary excision and staging neck dissection or radiotherapy. Multimodality therapy is appropriate for late-stage cancer and can include concurrent chemotherapy and radiation, primary excision, and treatment with concurrent cisplatinum, depending on the case. Also, “patients do really benefit if they’re enrolled in clinical trials.”

The good news is that HPV-positivity is associated with improved survival in oropharynx cancer, he said. He highlighted a 2019 study that said radiotherapy and cisplatin improve survival in HPV-positive oropharynx cancer patients. “This has become the de-facto standard of care for locally advanced, low-risk HPV-positive oropharynx cancer,” he said.

Califano reported no relevant disclosures.

Nocturnal oxygen therapy for patients with COPD and isolated nocturnal oxygen desaturation does not improve survival or delay disease progression, according to findings published Sept. 17 in The New England Journal of Medicine. The new report adds to evidence that the widely implemented and costly practice may be unnecessary.

Patients with COPD who do not qualify for long-term oxygen therapy (LTOT) are commonly prescribed nocturnal oxygen in the belief that it can delay disease progression, possibly by decreasing alveolar hypoventilation and ventilation-perfusion mismatch.

But investigations so far and the new study from the International Nocturnal Oxygen (INOX) Trial have not borne this out.

“There is no indication that nocturnal oxygen has a positive or negative effect on survival or progression to long-term oxygen therapy in patients with nocturnal hypoxemia in COPD. Consequently, there is no reason for physicians to screen for nocturnal hypoxemia in COPD,” study leader Yves Lacasse, MD, told Medscape Medical News.

Lacasse is from the Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Quebec, Canada.

The idea that the therapy helps is firmly entrenched.

In the early 1980s, two trials indicated that patients who had COPD and severe chronic daytime hypoxemia benefit from LTOT (15-18 hours a day or longer).

A decade later, two landmark trials (the Nocturnal Oxygen Therapy Trial and the British Medical Research Council Trial) added to evidence that LTOT may prolong life for patients with COPD and severe daytime hypoxemia.

“The good news from both trials was that oxygen saves lives. From this moment, oxygen therapy became a standard of care, and confirmatory trials would be considered unethical,” Lacasse explained.

“Oxygen therapy gained widespread acceptance by official organizations for treatment of most chronic cardiorespiratory conditions complicated by severe hypoxemia, even if proof of efficacy is lacking. New indications emerged, such as isolated nocturnal oxygen desaturation. Even in COPD, inappropriate prescriptions of home oxygen therapy are not unusual. Oxygen is everywhere,” Lacasse continued.

A meta-analysis from 2005 identified two trials that evaluated home oxygen therapy specifically for isolated nocturnal desaturation. Both found no survival benefit from nocturnal oxygen.

The study by Lacasse and colleagues assessed effects on mortality or worsening of disease (progression to LTOT) with 3-4 years of nocturnal oxygen supplementation.

Participants, whose oxygen saturation was less than 90% for at least 30% of the recording time on nocturnal oximetry, received oxygen or ambient air from a sham device as a placebo for at least 4 hours per session. The goal of treatment was nocturnal oxygen saturation exceeding 90% for at least 90% of the recorded time.

The trial protocol excluded patients with severe obesity, apnea, lung cancer, left heart failure, interstitial lung disease, or bronchiectasis.

The study was initially powered in 2010 to include 600 participants, with half to receive placebo. The study assumed mortality of 20% among control patients over 3 years; 20% of patients progressed to LTOT.

When recruiting lagged, the data safety monitoring board and steering committee extended follow-up to 4 years. In 2014, they requested an interim analysis, and recruitment ceased. Overall, 243 patients participated.

Lacasse cited several reasons for the difficulty with recruitment as well as retention: unwillingness to take the risk of receiving placebo instead of a readily available treatment, fading interest over time, and frailty that affects compliance.

Patients in the study came from 28 community or university-affiliated hospitals in Canada, Portugal, Spain, and France. At the 3-year mark, 39% of patients (48 of 123) who were assigned to nocturnal oxygen therapy and 42% (50 of 119) of those taking placebo had met criteria for LTOT or had died (difference, −3.0 percentage points; P = .64). The groups did not differ appreciably in rates of exacerbation and hospitalization.

The researchers could not analyze subgroups because the patients were very similar with regard to the severity of nocturnal oxygen desaturation, Lacasse said.

Economics enters into the picture – home oxygen therapy is second only to hospitalization as the most expensive healthcare expenditure associated with clinical care for COPD in developed countries. “The math is simple. There is enormous potential for saving money if the results of our clinical trial are applied appropriately,” said Lacasse.

William Bailey, MD, professor emeritus of pulmonary, allergy, and critical care medicine at the University of Alabama at Birmingham, agrees that the practice is overused.

“There is a built-in bias in the medical community. Most believe that anyone with lung disease benefits from oxygen. Even some of our investigators had a hard time believing the results. The study was well designed, carefully carried out, and I feel confident that the results are reliable,” he said.

Shawn P. E. Nishi, MD, director of bronchoscopy and advanced pulmonary procedures, division of pulmonary and critical care medicine, the University of Texas Medical Branch, Galveston, Texas, mentioned the study’s main limitation, which the authors readily acknowledge.

“Unfortunately, the trial had difficulty recruiting subjects, with less than half of expected enrollment achieved, and was underpowered to make any conclusions. Other studies have examined nocturnal oxygen use and have not shown a mortality benefit,” Nishi explained.

She added that the study did not evaluate use of LTOT for improving outcomes other than mortality, including quality of life, cardiovascular morbidity, depression, cognitive function, exercise capacity, and frequency of COPD exacerbations or hospitalization.

Other limitations of the study include suboptimal adherence to the therapy and interpretation of the clinical significance on the basis of a survey of Canadian pulmonologists.

This article first appeared on Medscape.com.

Nocturnal oxygen therapy for patients with COPD and isolated nocturnal oxygen desaturation does not improve survival or delay disease progression, according to findings published Sept. 17 in The New England Journal of Medicine. The new report adds to evidence that the widely implemented and costly practice may be unnecessary.

Patients with COPD who do not qualify for long-term oxygen therapy (LTOT) are commonly prescribed nocturnal oxygen in the belief that it can delay disease progression, possibly by decreasing alveolar hypoventilation and ventilation-perfusion mismatch.

But investigations so far and the new study from the International Nocturnal Oxygen (INOX) Trial have not borne this out.

“There is no indication that nocturnal oxygen has a positive or negative effect on survival or progression to long-term oxygen therapy in patients with nocturnal hypoxemia in COPD. Consequently, there is no reason for physicians to screen for nocturnal hypoxemia in COPD,” study leader Yves Lacasse, MD, told Medscape Medical News.

Lacasse is from the Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Quebec, Canada.

The idea that the therapy helps is firmly entrenched.

In the early 1980s, two trials indicated that patients who had COPD and severe chronic daytime hypoxemia benefit from LTOT (15-18 hours a day or longer).

A decade later, two landmark trials (the Nocturnal Oxygen Therapy Trial and the British Medical Research Council Trial) added to evidence that LTOT may prolong life for patients with COPD and severe daytime hypoxemia.

“The good news from both trials was that oxygen saves lives. From this moment, oxygen therapy became a standard of care, and confirmatory trials would be considered unethical,” Lacasse explained.

“Oxygen therapy gained widespread acceptance by official organizations for treatment of most chronic cardiorespiratory conditions complicated by severe hypoxemia, even if proof of efficacy is lacking. New indications emerged, such as isolated nocturnal oxygen desaturation. Even in COPD, inappropriate prescriptions of home oxygen therapy are not unusual. Oxygen is everywhere,” Lacasse continued.

A meta-analysis from 2005 identified two trials that evaluated home oxygen therapy specifically for isolated nocturnal desaturation. Both found no survival benefit from nocturnal oxygen.

The study by Lacasse and colleagues assessed effects on mortality or worsening of disease (progression to LTOT) with 3-4 years of nocturnal oxygen supplementation.

Participants, whose oxygen saturation was less than 90% for at least 30% of the recording time on nocturnal oximetry, received oxygen or ambient air from a sham device as a placebo for at least 4 hours per session. The goal of treatment was nocturnal oxygen saturation exceeding 90% for at least 90% of the recorded time.

The trial protocol excluded patients with severe obesity, apnea, lung cancer, left heart failure, interstitial lung disease, or bronchiectasis.

The study was initially powered in 2010 to include 600 participants, with half to receive placebo. The study assumed mortality of 20% among control patients over 3 years; 20% of patients progressed to LTOT.

When recruiting lagged, the data safety monitoring board and steering committee extended follow-up to 4 years. In 2014, they requested an interim analysis, and recruitment ceased. Overall, 243 patients participated.

Lacasse cited several reasons for the difficulty with recruitment as well as retention: unwillingness to take the risk of receiving placebo instead of a readily available treatment, fading interest over time, and frailty that affects compliance.

Patients in the study came from 28 community or university-affiliated hospitals in Canada, Portugal, Spain, and France. At the 3-year mark, 39% of patients (48 of 123) who were assigned to nocturnal oxygen therapy and 42% (50 of 119) of those taking placebo had met criteria for LTOT or had died (difference, −3.0 percentage points; P = .64). The groups did not differ appreciably in rates of exacerbation and hospitalization.

The researchers could not analyze subgroups because the patients were very similar with regard to the severity of nocturnal oxygen desaturation, Lacasse said.

Economics enters into the picture – home oxygen therapy is second only to hospitalization as the most expensive healthcare expenditure associated with clinical care for COPD in developed countries. “The math is simple. There is enormous potential for saving money if the results of our clinical trial are applied appropriately,” said Lacasse.

William Bailey, MD, professor emeritus of pulmonary, allergy, and critical care medicine at the University of Alabama at Birmingham, agrees that the practice is overused.

“There is a built-in bias in the medical community. Most believe that anyone with lung disease benefits from oxygen. Even some of our investigators had a hard time believing the results. The study was well designed, carefully carried out, and I feel confident that the results are reliable,” he said.

Shawn P. E. Nishi, MD, director of bronchoscopy and advanced pulmonary procedures, division of pulmonary and critical care medicine, the University of Texas Medical Branch, Galveston, Texas, mentioned the study’s main limitation, which the authors readily acknowledge.

“Unfortunately, the trial had difficulty recruiting subjects, with less than half of expected enrollment achieved, and was underpowered to make any conclusions. Other studies have examined nocturnal oxygen use and have not shown a mortality benefit,” Nishi explained.

She added that the study did not evaluate use of LTOT for improving outcomes other than mortality, including quality of life, cardiovascular morbidity, depression, cognitive function, exercise capacity, and frequency of COPD exacerbations or hospitalization.

Other limitations of the study include suboptimal adherence to the therapy and interpretation of the clinical significance on the basis of a survey of Canadian pulmonologists.

This article first appeared on Medscape.com.

Nocturnal oxygen therapy for patients with COPD and isolated nocturnal oxygen desaturation does not improve survival or delay disease progression, according to findings published Sept. 17 in The New England Journal of Medicine. The new report adds to evidence that the widely implemented and costly practice may be unnecessary.

Patients with COPD who do not qualify for long-term oxygen therapy (LTOT) are commonly prescribed nocturnal oxygen in the belief that it can delay disease progression, possibly by decreasing alveolar hypoventilation and ventilation-perfusion mismatch.

But investigations so far and the new study from the International Nocturnal Oxygen (INOX) Trial have not borne this out.

“There is no indication that nocturnal oxygen has a positive or negative effect on survival or progression to long-term oxygen therapy in patients with nocturnal hypoxemia in COPD. Consequently, there is no reason for physicians to screen for nocturnal hypoxemia in COPD,” study leader Yves Lacasse, MD, told Medscape Medical News.

Lacasse is from the Institut Universitaire de Cardiologie et de Pneumologie de Québec–Université Laval, Quebec, Canada.

The idea that the therapy helps is firmly entrenched.

In the early 1980s, two trials indicated that patients who had COPD and severe chronic daytime hypoxemia benefit from LTOT (15-18 hours a day or longer).

A decade later, two landmark trials (the Nocturnal Oxygen Therapy Trial and the British Medical Research Council Trial) added to evidence that LTOT may prolong life for patients with COPD and severe daytime hypoxemia.

“The good news from both trials was that oxygen saves lives. From this moment, oxygen therapy became a standard of care, and confirmatory trials would be considered unethical,” Lacasse explained.

“Oxygen therapy gained widespread acceptance by official organizations for treatment of most chronic cardiorespiratory conditions complicated by severe hypoxemia, even if proof of efficacy is lacking. New indications emerged, such as isolated nocturnal oxygen desaturation. Even in COPD, inappropriate prescriptions of home oxygen therapy are not unusual. Oxygen is everywhere,” Lacasse continued.

A meta-analysis from 2005 identified two trials that evaluated home oxygen therapy specifically for isolated nocturnal desaturation. Both found no survival benefit from nocturnal oxygen.

The study by Lacasse and colleagues assessed effects on mortality or worsening of disease (progression to LTOT) with 3-4 years of nocturnal oxygen supplementation.

Participants, whose oxygen saturation was less than 90% for at least 30% of the recording time on nocturnal oximetry, received oxygen or ambient air from a sham device as a placebo for at least 4 hours per session. The goal of treatment was nocturnal oxygen saturation exceeding 90% for at least 90% of the recorded time.

The trial protocol excluded patients with severe obesity, apnea, lung cancer, left heart failure, interstitial lung disease, or bronchiectasis.

The study was initially powered in 2010 to include 600 participants, with half to receive placebo. The study assumed mortality of 20% among control patients over 3 years; 20% of patients progressed to LTOT.

When recruiting lagged, the data safety monitoring board and steering committee extended follow-up to 4 years. In 2014, they requested an interim analysis, and recruitment ceased. Overall, 243 patients participated.

Lacasse cited several reasons for the difficulty with recruitment as well as retention: unwillingness to take the risk of receiving placebo instead of a readily available treatment, fading interest over time, and frailty that affects compliance.

Patients in the study came from 28 community or university-affiliated hospitals in Canada, Portugal, Spain, and France. At the 3-year mark, 39% of patients (48 of 123) who were assigned to nocturnal oxygen therapy and 42% (50 of 119) of those taking placebo had met criteria for LTOT or had died (difference, −3.0 percentage points; P = .64). The groups did not differ appreciably in rates of exacerbation and hospitalization.

The researchers could not analyze subgroups because the patients were very similar with regard to the severity of nocturnal oxygen desaturation, Lacasse said.

Economics enters into the picture – home oxygen therapy is second only to hospitalization as the most expensive healthcare expenditure associated with clinical care for COPD in developed countries. “The math is simple. There is enormous potential for saving money if the results of our clinical trial are applied appropriately,” said Lacasse.

William Bailey, MD, professor emeritus of pulmonary, allergy, and critical care medicine at the University of Alabama at Birmingham, agrees that the practice is overused.

“There is a built-in bias in the medical community. Most believe that anyone with lung disease benefits from oxygen. Even some of our investigators had a hard time believing the results. The study was well designed, carefully carried out, and I feel confident that the results are reliable,” he said.

Shawn P. E. Nishi, MD, director of bronchoscopy and advanced pulmonary procedures, division of pulmonary and critical care medicine, the University of Texas Medical Branch, Galveston, Texas, mentioned the study’s main limitation, which the authors readily acknowledge.

“Unfortunately, the trial had difficulty recruiting subjects, with less than half of expected enrollment achieved, and was underpowered to make any conclusions. Other studies have examined nocturnal oxygen use and have not shown a mortality benefit,” Nishi explained.

She added that the study did not evaluate use of LTOT for improving outcomes other than mortality, including quality of life, cardiovascular morbidity, depression, cognitive function, exercise capacity, and frequency of COPD exacerbations or hospitalization.

Other limitations of the study include suboptimal adherence to the therapy and interpretation of the clinical significance on the basis of a survey of Canadian pulmonologists.

This article first appeared on Medscape.com.

Chronic obstructive pulmonary disease (COPD) is caused by airway and alveolar abnormalities and is the third most common cause of death worldwide. COPD results in airflow obstruction that is not fully reversible. The diagnosis of COPD should be considered in patients over 40 years who have chronic cough and/or dyspnea, particularly if they have a history of tobacco use. The diagnosis is confirmed by a diminished forced expiratory volume in 1 second (FEV₁) that is not fully reversible with the use of a bronchodilator and an FEV₁/forced vital capacity ratio of less than or equal to 0.7.¹The American Thoracic Society released a guideline on the pharmacologic management of COPD after formulating specific questions to be answered using rigorous GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology.²

Recommendation 1

Patients with COPD who report dyspnea or exercise intolerance should be treated with both a long-acting muscarinic antagonist (LAMA) and a long-acting beta agonist (LABA) (dual LAMA/LABA therapy) instead of monotherapy, the guideline says.

This recommendation represents a critical change in care and is based on strong evidence. For years practitioners have been using single bronchodilator therapy, often a LAMA as the entrance to treatment for patients with symptomatic COPD. The recommendation to begin treatment with dual bronchodilator therapy is an important one. This is the only recommendation that received a “strong” grade.

The evidence comes from the compilation of 24 randomized controlled trials that altogether included 45,441 patients. Dual therapy versus monotherapy was evaluated by examining differences in dyspnea, health-related quality of life, exacerbations (which were defined as requiring antibiotics, oral steroids, or hospitalizations), and hospitalizations independently. Marked improvements were observed for exacerbations and hospitalizations in the dual LAMA/LABA group, compared with treatment with use of a single bronchodilator. In 22,733 patients across 15 RCTs, there were 88 fewer exacerbations per 1,000 patients with a rate ratio (RR) of 0.80 (P < .002), the guideline states.

The decrease in exacerbations is a critical factor in treating patients with COPD because each exacerbation can lead to a sustained decrease in airflow and increases the risk of future exacerbations.
 

Recommendation 2

In COPD patients who report dyspnea or exercise intolerance, with an exacerbation in the last year, the guideline recommends triple therapy with an inhaled corticosteroid (ICS) instead of just dual LAMA/LABA therapy.

In the past many clinicians have relegated triple therapy to a “last ditch resort.” This recommendation makes it clear that triple therapy is appropriate for a broad range of patients with moderate to severe COPD.
 

Recommendation 3

In patients with COPD who are on triple therapy, the inhaled corticosteroid component can be withdrawn if patients have not had an exacerbation within the last year, according to the guideline.

It should be noted that the committee said that the ICS can be withdrawn, not that it necessarily needs to be withdrawn. The data showed that it would be safe to withdraw the ICS, but the data is limited in time to 1 year’s follow-up.
 

Recommendation 4

ATS was not able to make a recommendation for or against ICS as an additive therapy to LAMA/LABA in those without an exacerbation and elevated blood eosinophilia (defined as ≥2% blood eosinophils or >149 cell/mcL). In those with at least one exacerbation and increased blood eosinophilia, the society does recommend addition of ICS to dual LAMA/LABA therapy.

An area of ongoing discussion is at what point in disease severity, before exacerbations occur, might ICS be useful in preventing a first exacerbation. This awaits further studies and evidence.
 

Recommendation 5

In COPD patients with frequent and severe exacerbations who are otherwise medically optimized, the ATS advises against the use of maintenance oral corticosteroid therapy.

It has been known and accepted for years that oral steroids should be avoided if at all possible because they have little benefit and can cause significant harm. The guideline reinforces this.
 

The Bottom Line

Dual LAMA/LABA therapy in symptomatic patients is the standard of care. If a patient has had an exacerbation within the last year, add an ICS to the LAMA/LABA, most conveniently given in the form of triple therapy in one inhaler. Finally, even in refractory COPD, maintenance oral corticosteroids bring more harm than benefit.

Dr. Skolnik is professor of family and community medicine at the Thomas Jefferson University, Philadelphia, and associate director of the Family Medicine Residency Program at Abington (Pa.) Jefferson Health. Dr. Matthews is a second-year resident in the family medicine residency program at Abington Jefferson Health.

References

1. Wells C, Joo MJ. COPD and asthma: Diagnostic accuracy requires spirometry. J Fam Pract. 2019;68(2):76-81.

2. Nici L, Mammen MJ, Charbek E, et al. Pharmacologic management of chronic obstructive pulmonary disease. An official American Thoracic Society clinical practice guideline. Am J Respir Crit Care Med. 2020;201(9):e56-69.

Chronic obstructive pulmonary disease (COPD) is caused by airway and alveolar abnormalities and is the third most common cause of death worldwide. COPD results in airflow obstruction that is not fully reversible. The diagnosis of COPD should be considered in patients over 40 years who have chronic cough and/or dyspnea, particularly if they have a history of tobacco use. The diagnosis is confirmed by a diminished forced expiratory volume in 1 second (FEV₁) that is not fully reversible with the use of a bronchodilator and an FEV₁/forced vital capacity ratio of less than or equal to 0.7.¹The American Thoracic Society released a guideline on the pharmacologic management of COPD after formulating specific questions to be answered using rigorous GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology.²

Recommendation 1

Patients with COPD who report dyspnea or exercise intolerance should be treated with both a long-acting muscarinic antagonist (LAMA) and a long-acting beta agonist (LABA) (dual LAMA/LABA therapy) instead of monotherapy, the guideline says.

This recommendation represents a critical change in care and is based on strong evidence. For years practitioners have been using single bronchodilator therapy, often a LAMA as the entrance to treatment for patients with symptomatic COPD. The recommendation to begin treatment with dual bronchodilator therapy is an important one. This is the only recommendation that received a “strong” grade.

The evidence comes from the compilation of 24 randomized controlled trials that altogether included 45,441 patients. Dual therapy versus monotherapy was evaluated by examining differences in dyspnea, health-related quality of life, exacerbations (which were defined as requiring antibiotics, oral steroids, or hospitalizations), and hospitalizations independently. Marked improvements were observed for exacerbations and hospitalizations in the dual LAMA/LABA group, compared with treatment with use of a single bronchodilator. In 22,733 patients across 15 RCTs, there were 88 fewer exacerbations per 1,000 patients with a rate ratio (RR) of 0.80 (P < .002), the guideline states.

The decrease in exacerbations is a critical factor in treating patients with COPD because each exacerbation can lead to a sustained decrease in airflow and increases the risk of future exacerbations.
 

Recommendation 2

In COPD patients who report dyspnea or exercise intolerance, with an exacerbation in the last year, the guideline recommends triple therapy with an inhaled corticosteroid (ICS) instead of just dual LAMA/LABA therapy.

In the past many clinicians have relegated triple therapy to a “last ditch resort.” This recommendation makes it clear that triple therapy is appropriate for a broad range of patients with moderate to severe COPD.
 

Recommendation 3

In patients with COPD who are on triple therapy, the inhaled corticosteroid component can be withdrawn if patients have not had an exacerbation within the last year, according to the guideline.

It should be noted that the committee said that the ICS can be withdrawn, not that it necessarily needs to be withdrawn. The data showed that it would be safe to withdraw the ICS, but the data is limited in time to 1 year’s follow-up.
 

Recommendation 4

ATS was not able to make a recommendation for or against ICS as an additive therapy to LAMA/LABA in those without an exacerbation and elevated blood eosinophilia (defined as ≥2% blood eosinophils or >149 cell/mcL). In those with at least one exacerbation and increased blood eosinophilia, the society does recommend addition of ICS to dual LAMA/LABA therapy.

An area of ongoing discussion is at what point in disease severity, before exacerbations occur, might ICS be useful in preventing a first exacerbation. This awaits further studies and evidence.
 

Recommendation 5

In COPD patients with frequent and severe exacerbations who are otherwise medically optimized, the ATS advises against the use of maintenance oral corticosteroid therapy.

It has been known and accepted for years that oral steroids should be avoided if at all possible because they have little benefit and can cause significant harm. The guideline reinforces this.
 

The Bottom Line

Dual LAMA/LABA therapy in symptomatic patients is the standard of care. If a patient has had an exacerbation within the last year, add an ICS to the LAMA/LABA, most conveniently given in the form of triple therapy in one inhaler. Finally, even in refractory COPD, maintenance oral corticosteroids bring more harm than benefit.

Dr. Skolnik is professor of family and community medicine at the Thomas Jefferson University, Philadelphia, and associate director of the Family Medicine Residency Program at Abington (Pa.) Jefferson Health. Dr. Matthews is a second-year resident in the family medicine residency program at Abington Jefferson Health.

References

1. Wells C, Joo MJ. COPD and asthma: Diagnostic accuracy requires spirometry. J Fam Pract. 2019;68(2):76-81.

2. Nici L, Mammen MJ, Charbek E, et al. Pharmacologic management of chronic obstructive pulmonary disease. An official American Thoracic Society clinical practice guideline. Am J Respir Crit Care Med. 2020;201(9):e56-69.

Chronic obstructive pulmonary disease (COPD) is caused by airway and alveolar abnormalities and is the third most common cause of death worldwide. COPD results in airflow obstruction that is not fully reversible. The diagnosis of COPD should be considered in patients over 40 years who have chronic cough and/or dyspnea, particularly if they have a history of tobacco use. The diagnosis is confirmed by a diminished forced expiratory volume in 1 second (FEV₁) that is not fully reversible with the use of a bronchodilator and an FEV₁/forced vital capacity ratio of less than or equal to 0.7.¹The American Thoracic Society released a guideline on the pharmacologic management of COPD after formulating specific questions to be answered using rigorous GRADE (Grading of Recommendations Assessment, Development and Evaluation) methodology.²

Recommendation 1

Patients with COPD who report dyspnea or exercise intolerance should be treated with both a long-acting muscarinic antagonist (LAMA) and a long-acting beta agonist (LABA) (dual LAMA/LABA therapy) instead of monotherapy, the guideline says.

This recommendation represents a critical change in care and is based on strong evidence. For years practitioners have been using single bronchodilator therapy, often a LAMA as the entrance to treatment for patients with symptomatic COPD. The recommendation to begin treatment with dual bronchodilator therapy is an important one. This is the only recommendation that received a “strong” grade.

The evidence comes from the compilation of 24 randomized controlled trials that altogether included 45,441 patients. Dual therapy versus monotherapy was evaluated by examining differences in dyspnea, health-related quality of life, exacerbations (which were defined as requiring antibiotics, oral steroids, or hospitalizations), and hospitalizations independently. Marked improvements were observed for exacerbations and hospitalizations in the dual LAMA/LABA group, compared with treatment with use of a single bronchodilator. In 22,733 patients across 15 RCTs, there were 88 fewer exacerbations per 1,000 patients with a rate ratio (RR) of 0.80 (P < .002), the guideline states.

The decrease in exacerbations is a critical factor in treating patients with COPD because each exacerbation can lead to a sustained decrease in airflow and increases the risk of future exacerbations.
 

Recommendation 2

In COPD patients who report dyspnea or exercise intolerance, with an exacerbation in the last year, the guideline recommends triple therapy with an inhaled corticosteroid (ICS) instead of just dual LAMA/LABA therapy.

In the past many clinicians have relegated triple therapy to a “last ditch resort.” This recommendation makes it clear that triple therapy is appropriate for a broad range of patients with moderate to severe COPD.
 

Recommendation 3

In patients with COPD who are on triple therapy, the inhaled corticosteroid component can be withdrawn if patients have not had an exacerbation within the last year, according to the guideline.

It should be noted that the committee said that the ICS can be withdrawn, not that it necessarily needs to be withdrawn. The data showed that it would be safe to withdraw the ICS, but the data is limited in time to 1 year’s follow-up.
 

Recommendation 4

ATS was not able to make a recommendation for or against ICS as an additive therapy to LAMA/LABA in those without an exacerbation and elevated blood eosinophilia (defined as ≥2% blood eosinophils or >149 cell/mcL). In those with at least one exacerbation and increased blood eosinophilia, the society does recommend addition of ICS to dual LAMA/LABA therapy.

An area of ongoing discussion is at what point in disease severity, before exacerbations occur, might ICS be useful in preventing a first exacerbation. This awaits further studies and evidence.
 

Recommendation 5

In COPD patients with frequent and severe exacerbations who are otherwise medically optimized, the ATS advises against the use of maintenance oral corticosteroid therapy.

It has been known and accepted for years that oral steroids should be avoided if at all possible because they have little benefit and can cause significant harm. The guideline reinforces this.
 

The Bottom Line

Dual LAMA/LABA therapy in symptomatic patients is the standard of care. If a patient has had an exacerbation within the last year, add an ICS to the LAMA/LABA, most conveniently given in the form of triple therapy in one inhaler. Finally, even in refractory COPD, maintenance oral corticosteroids bring more harm than benefit.

Dr. Skolnik is professor of family and community medicine at the Thomas Jefferson University, Philadelphia, and associate director of the Family Medicine Residency Program at Abington (Pa.) Jefferson Health. Dr. Matthews is a second-year resident in the family medicine residency program at Abington Jefferson Health.

References

1. Wells C, Joo MJ. COPD and asthma: Diagnostic accuracy requires spirometry. J Fam Pract. 2019;68(2):76-81.

2. Nici L, Mammen MJ, Charbek E, et al. Pharmacologic management of chronic obstructive pulmonary disease. An official American Thoracic Society clinical practice guideline. Am J Respir Crit Care Med. 2020;201(9):e56-69.

Proton pump inhibitors may short-circuit the benefits of atezolizumab (Tecentriq) in patients with advanced/metastatic urothelial cancer, according to a post hoc analysis of 1,360 subjects from two atezolizumab trials.

Proton pump inhibitor (PPI) use was associated with worse overall and progression-free survival among patients on atezolizumab, but there was no such association in a matched cohort receiving chemotherapy alone. In short, concomitant “PPI users had no atezolizumab benefit,” wrote the investigators led by Ashley Hopkins, PhD, a research fellow at Flinders University in Adelaide, Australia.

This is the first time that PPI use has been shown to be an independent prognostic factor for worse survival in this setting with atezolizumab use – but not with chemotherapy, wrote the authors of the study, published online in Clinical Cancer Research.

“PPIs are overused, or inappropriately used, in patients with cancer by up to 50%, seemingly from a perspective that they will cause no harm. The findings from this study suggest that noncritical PPI use needs to be approached very cautiously, particularly when an immune checkpoint inhibitor is being used to treat urothelial cancer,” Hopkins said in a press release.

Although about one third of cancer patients use PPIs, there has been growing evidence that the changes they induce in the gut microbiome impact immune checkpoint inhibitor (ICI) effectiveness. A similar study of pooled trial data recently found that PPIs, as well as antibiotics, were associated with worse survival in advanced non–small cell lung cancer treated with atezolizumab, while no such tie was found with chemotherapy (Ann Oncol. 2020;31:525-31. doi: 10.1016/j.annonc.2020.01.006).

The mechanism is uncertain. PPIs have been associated with T-cell tolerance, pharmacokinetic changes, and decreased gut microbiota diversity. High diversity, the investigators noted, has been associated with stronger ICI responses in melanoma. Antibiotics have been associated with similar gut dysbiosis.

“It is increasingly evident that altered gut microbiota impacts homeostasis, immune response, cancer prognosis, and ICI efficacy. The hypothetical basis of [our] research is that PPIs are associated with marked changes to the gut microbiota, driven by both altered stomach acidity and direct compound effects, and these changes may impact immunotherapy,” Hopkins said in an email to Medscape.

The associations with urothelial cancer hadn’t been investigated before, so Hopkins and his team pooled patient-level data from the single-arm IMvigor210 trial of atezolizumab for urothelial cancer and the randomized IMvigor211 trial, which pitted atezolizumab against chemotherapy for the indication.

The investigators compared the outcomes of the 471 subjects who were on a PPI from 30 days before to 30 days after starting atezolizumab with the outcomes of 889 subjects who were not on a PPI. Findings were adjusted for tumor histology and the number of prior treatments and metastases sites, as well as age, body mass index, performance status, and other potential confounders.

PPI use was associated with markedly worse overall survival (hazard ratio, 1.52; 95% confidence interval, 1.27-1.83; P < .001) and progression-free survival (HR, 1.38; 95% CI, 1.18-1.62; P < .001) in patients on atezolizumab but not chemotherapy. PPI use was also associated with worse objective response to the ICI (HR, 0.51; 95% CI, 0.32-0.82; P = .006).

In the randomized trial, atezolizumab seemed to offer no overall survival benefit versus chemotherapy when PPIs were onboard (HR, 1.04; 95% CI, 0.81-1.34), but atezolizumab offered a substantial benefit when PPIs were not in use (HR, 0.69; 95% CI, 0.56-0.84). Findings were consistent when limited to the PD-L1 IC2/3 population.

It seems that PPIs negate “the magnitude of atezolizumab efficacy,” the investigators wrote.

Concomitant antibiotics made the effect of PPIs on overall survival with atezolizumab even worse (antibiotics plus PPI: HR 2.51; 95% CI, 1.12-5.59; versus no antibiotics with PPI: HR, 1.44; 95% CI, 1.19-1.74).

The investigators cautioned that, although “the conducted analyses have been adjusted, there is the potential that PPI use constitutes a surrogate marker for an unfit or immunodeficient patient.” They called for further investigation with other ICIs, cancer types, and chemotherapy regimens.

The dose and compliance with PPI therapy were unknown, but the team noted that over 90% of the PPI subjects were on PPIs for long-term reasons, most commonly gastric protection and gastroesophageal reflux disease (GERD). Omeprazole, pantoprazole, and esomeprazole were the most frequently used. 

There were no significant associations between PPI use and the first occurrence of atezolizumab-induced adverse events.

The study was funded by the National Breast Cancer Foundation (Australia) and the Cancer Council South Australia. Hopkins has disclosed no relevant financial relationships. Multiple study authors have financial ties to industry, including makers of ICIs. The full list can be found with the original article.

This article first appeared on Medscape.com.

Proton pump inhibitors may short-circuit the benefits of atezolizumab (Tecentriq) in patients with advanced/metastatic urothelial cancer, according to a post hoc analysis of 1,360 subjects from two atezolizumab trials.

Proton pump inhibitor (PPI) use was associated with worse overall and progression-free survival among patients on atezolizumab, but there was no such association in a matched cohort receiving chemotherapy alone. In short, concomitant “PPI users had no atezolizumab benefit,” wrote the investigators led by Ashley Hopkins, PhD, a research fellow at Flinders University in Adelaide, Australia.

This is the first time that PPI use has been shown to be an independent prognostic factor for worse survival in this setting with atezolizumab use – but not with chemotherapy, wrote the authors of the study, published online in Clinical Cancer Research.

“PPIs are overused, or inappropriately used, in patients with cancer by up to 50%, seemingly from a perspective that they will cause no harm. The findings from this study suggest that noncritical PPI use needs to be approached very cautiously, particularly when an immune checkpoint inhibitor is being used to treat urothelial cancer,” Hopkins said in a press release.

Although about one third of cancer patients use PPIs, there has been growing evidence that the changes they induce in the gut microbiome impact immune checkpoint inhibitor (ICI) effectiveness. A similar study of pooled trial data recently found that PPIs, as well as antibiotics, were associated with worse survival in advanced non–small cell lung cancer treated with atezolizumab, while no such tie was found with chemotherapy (Ann Oncol. 2020;31:525-31. doi: 10.1016/j.annonc.2020.01.006).

The mechanism is uncertain. PPIs have been associated with T-cell tolerance, pharmacokinetic changes, and decreased gut microbiota diversity. High diversity, the investigators noted, has been associated with stronger ICI responses in melanoma. Antibiotics have been associated with similar gut dysbiosis.

“It is increasingly evident that altered gut microbiota impacts homeostasis, immune response, cancer prognosis, and ICI efficacy. The hypothetical basis of [our] research is that PPIs are associated with marked changes to the gut microbiota, driven by both altered stomach acidity and direct compound effects, and these changes may impact immunotherapy,” Hopkins said in an email to Medscape.

The associations with urothelial cancer hadn’t been investigated before, so Hopkins and his team pooled patient-level data from the single-arm IMvigor210 trial of atezolizumab for urothelial cancer and the randomized IMvigor211 trial, which pitted atezolizumab against chemotherapy for the indication.

The investigators compared the outcomes of the 471 subjects who were on a PPI from 30 days before to 30 days after starting atezolizumab with the outcomes of 889 subjects who were not on a PPI. Findings were adjusted for tumor histology and the number of prior treatments and metastases sites, as well as age, body mass index, performance status, and other potential confounders.

PPI use was associated with markedly worse overall survival (hazard ratio, 1.52; 95% confidence interval, 1.27-1.83; P < .001) and progression-free survival (HR, 1.38; 95% CI, 1.18-1.62; P < .001) in patients on atezolizumab but not chemotherapy. PPI use was also associated with worse objective response to the ICI (HR, 0.51; 95% CI, 0.32-0.82; P = .006).

In the randomized trial, atezolizumab seemed to offer no overall survival benefit versus chemotherapy when PPIs were onboard (HR, 1.04; 95% CI, 0.81-1.34), but atezolizumab offered a substantial benefit when PPIs were not in use (HR, 0.69; 95% CI, 0.56-0.84). Findings were consistent when limited to the PD-L1 IC2/3 population.

It seems that PPIs negate “the magnitude of atezolizumab efficacy,” the investigators wrote.

Concomitant antibiotics made the effect of PPIs on overall survival with atezolizumab even worse (antibiotics plus PPI: HR 2.51; 95% CI, 1.12-5.59; versus no antibiotics with PPI: HR, 1.44; 95% CI, 1.19-1.74).

The investigators cautioned that, although “the conducted analyses have been adjusted, there is the potential that PPI use constitutes a surrogate marker for an unfit or immunodeficient patient.” They called for further investigation with other ICIs, cancer types, and chemotherapy regimens.

The dose and compliance with PPI therapy were unknown, but the team noted that over 90% of the PPI subjects were on PPIs for long-term reasons, most commonly gastric protection and gastroesophageal reflux disease (GERD). Omeprazole, pantoprazole, and esomeprazole were the most frequently used. 

There were no significant associations between PPI use and the first occurrence of atezolizumab-induced adverse events.

The study was funded by the National Breast Cancer Foundation (Australia) and the Cancer Council South Australia. Hopkins has disclosed no relevant financial relationships. Multiple study authors have financial ties to industry, including makers of ICIs. The full list can be found with the original article.

This article first appeared on Medscape.com.

Proton pump inhibitors may short-circuit the benefits of atezolizumab (Tecentriq) in patients with advanced/metastatic urothelial cancer, according to a post hoc analysis of 1,360 subjects from two atezolizumab trials.

Proton pump inhibitor (PPI) use was associated with worse overall and progression-free survival among patients on atezolizumab, but there was no such association in a matched cohort receiving chemotherapy alone. In short, concomitant “PPI users had no atezolizumab benefit,” wrote the investigators led by Ashley Hopkins, PhD, a research fellow at Flinders University in Adelaide, Australia.

This is the first time that PPI use has been shown to be an independent prognostic factor for worse survival in this setting with atezolizumab use – but not with chemotherapy, wrote the authors of the study, published online in Clinical Cancer Research.

“PPIs are overused, or inappropriately used, in patients with cancer by up to 50%, seemingly from a perspective that they will cause no harm. The findings from this study suggest that noncritical PPI use needs to be approached very cautiously, particularly when an immune checkpoint inhibitor is being used to treat urothelial cancer,” Hopkins said in a press release.

Although about one third of cancer patients use PPIs, there has been growing evidence that the changes they induce in the gut microbiome impact immune checkpoint inhibitor (ICI) effectiveness. A similar study of pooled trial data recently found that PPIs, as well as antibiotics, were associated with worse survival in advanced non–small cell lung cancer treated with atezolizumab, while no such tie was found with chemotherapy (Ann Oncol. 2020;31:525-31. doi: 10.1016/j.annonc.2020.01.006).

The mechanism is uncertain. PPIs have been associated with T-cell tolerance, pharmacokinetic changes, and decreased gut microbiota diversity. High diversity, the investigators noted, has been associated with stronger ICI responses in melanoma. Antibiotics have been associated with similar gut dysbiosis.

“It is increasingly evident that altered gut microbiota impacts homeostasis, immune response, cancer prognosis, and ICI efficacy. The hypothetical basis of [our] research is that PPIs are associated with marked changes to the gut microbiota, driven by both altered stomach acidity and direct compound effects, and these changes may impact immunotherapy,” Hopkins said in an email to Medscape.

The associations with urothelial cancer hadn’t been investigated before, so Hopkins and his team pooled patient-level data from the single-arm IMvigor210 trial of atezolizumab for urothelial cancer and the randomized IMvigor211 trial, which pitted atezolizumab against chemotherapy for the indication.

The investigators compared the outcomes of the 471 subjects who were on a PPI from 30 days before to 30 days after starting atezolizumab with the outcomes of 889 subjects who were not on a PPI. Findings were adjusted for tumor histology and the number of prior treatments and metastases sites, as well as age, body mass index, performance status, and other potential confounders.

PPI use was associated with markedly worse overall survival (hazard ratio, 1.52; 95% confidence interval, 1.27-1.83; P < .001) and progression-free survival (HR, 1.38; 95% CI, 1.18-1.62; P < .001) in patients on atezolizumab but not chemotherapy. PPI use was also associated with worse objective response to the ICI (HR, 0.51; 95% CI, 0.32-0.82; P = .006).

In the randomized trial, atezolizumab seemed to offer no overall survival benefit versus chemotherapy when PPIs were onboard (HR, 1.04; 95% CI, 0.81-1.34), but atezolizumab offered a substantial benefit when PPIs were not in use (HR, 0.69; 95% CI, 0.56-0.84). Findings were consistent when limited to the PD-L1 IC2/3 population.

It seems that PPIs negate “the magnitude of atezolizumab efficacy,” the investigators wrote.

Concomitant antibiotics made the effect of PPIs on overall survival with atezolizumab even worse (antibiotics plus PPI: HR 2.51; 95% CI, 1.12-5.59; versus no antibiotics with PPI: HR, 1.44; 95% CI, 1.19-1.74).

The investigators cautioned that, although “the conducted analyses have been adjusted, there is the potential that PPI use constitutes a surrogate marker for an unfit or immunodeficient patient.” They called for further investigation with other ICIs, cancer types, and chemotherapy regimens.

The dose and compliance with PPI therapy were unknown, but the team noted that over 90% of the PPI subjects were on PPIs for long-term reasons, most commonly gastric protection and gastroesophageal reflux disease (GERD). Omeprazole, pantoprazole, and esomeprazole were the most frequently used. 

There were no significant associations between PPI use and the first occurrence of atezolizumab-induced adverse events.

The study was funded by the National Breast Cancer Foundation (Australia) and the Cancer Council South Australia. Hopkins has disclosed no relevant financial relationships. Multiple study authors have financial ties to industry, including makers of ICIs. The full list can be found with the original article.

This article first appeared on Medscape.com.