Asthma

Patients with severe asthma and comorbid atopy, obesity, and depression/anxiety had fewer annual exacerbations after receiving mepolizumab, according to research from the annual meeting of the American Academy of Allergy, Asthma, and Immunology.

“Mepolizumab has clearly been shown to improve severe asthma control in many clinical trials, but atopy, obesity, and depression/anxiety affect patients with asthma at an increased rate,” Thomas B. Casale, MD, former AAAAI president and professor of medicine and pediatrics at the University of South Florida in Tampa, said in a presentation at the meeting. “Yet, few studies have examined whether asthma therapy with these comorbidities works.”

Dr. Casale and colleagues performed a retrospective analysis of patients in the United States from the MarketScan Commercial and Medicare Supplemental Database between November 2014 and December 2018 who had atopy, obesity, or depression/anxiety in addition to asthma and were receiving mepolizumab. Atopy in the study was defined as allergic rhinitis, anaphylaxis, atopic dermatitis, conjunctivitis, eosinophilic esophagitis, and food allergies. Patients were at least age 12 years, had at least one diagnosis for asthma, at least one diagnosis code for atopic disease, obesity, or depression/anxiety at baseline, and at least two administrations of mepolizumab within 180 days.

The researchers examined the number of exacerbations, oral corticosteroid (OCS) claims, and OCS bursts per year at 12-month follow-up, compared with baseline. They identified exacerbations by examining patients who had an emergency department or outpatient claim related to their asthma, and a claim for systemic corticosteroids made in the 4 days prior to or 5 days after a visit, or if their inpatient hospital admission contained a primary asthma diagnosis. Dr. Casale and colleagues measured OCS bursts as a pharmacy claim of at least 20 mg of prednisone per day for between 3 and 28 days plus a claim for an emergency department visit related to asthma in the 7 days prior or 6 days after the claim.

At baseline, patients across all groups were mean age 50.5-52.4 years with a Charleson Comorbidity Index score between 1.1 and 1.4, a majority were women (59.0%-72.0%) and nearly all were commercially insured (88.0%-90.0%). Patients who used biologics at baseline and/or used a biologic that wasn’t mepolizumab during the follow-up period were excluded.

Medication claims in the groups included inhaled corticosteroids (ICS) (36.8%-48.6%), ICS/long-acting beta-agonist (LABA) (60.2%-63.0%), LABA/ long-acting muscarinic antagonist (LAMA) (1.2%-3.5%), ICS/LABA/LAMA (21.2%-25.1%), short-acting beta-agonist (SABA) (83.2%-87.7%), LAMA alone (33.5%-42.1%), or leukotriene receptor antagonist (LTRA).

In the non–mutually exclusive group of patients with atopy (468 patients), 28.0% had comorbid obesity and 26.0% had comorbid depression/anxiety. For patients with obesity categorized in a non–mutually exclusive subgroup (171 patients), 79.0% had comorbid atopy and 32.0% had comorbid depression/anxiety. Among patients with non–mutually exclusive depression/anxiety (173 patients), 70.0% had comorbid atopy, while 32.0% had comorbid obesity.

The results showed the mean number of overall exacerbations decreased by 48% at 12 months in the atopic group (2.3 vs. 1.2; P < .001), 52% in the group with obesity (2.5 vs. 1.2; P < .001), and 38% in the depression/anxiety group (2.4 vs. 1.5; P < .001). The mean number of exacerbations leading to hospitalizations decreased by 64% in the atopic group (0.11 vs. 0.04; P < .001), 65% in the group with obesity (0.20 vs. 0.07; P < .001), and 68% in the group with depression/anxiety (0.22 vs. 0.07; P < .001).

The researchers also found the mean number of OCS claims and OCS bursts also significantly decreased over the 12-month follow-up period. Mean OCS claims decreased by 33% for patients in the atopic group (5.5 vs. 3.7; P < .001), by 38% in the group with obesity (6.1 vs. 3.8; P < .001), and by 31% in the group with depression/anxiety (6.2 vs. 4.3; P < .001).

The mean number of OCS bursts also significantly decreased by 40% in the atopic group (2.0 vs. 2.1; P < .001), 48% in the group with obesity (2.3 vs. 1.2; P < .001), and by 37% in the group with depression/anxiety (1.9 vs. 1.2; P < .001). In total, 69% of patients with comorbid atopy, 70.8% of patients with comorbid obesity, and 68.2% of patients with comorbid depression/anxiety experienced a mean decrease in their OCS dose over 12 months.

“These data demonstrate that patients with asthma and atopy, obesity, or depression and anxiety have significantly fewer exacerbations and reduced OCS use in a real-world setting with treatment of mepolizumab,” Dr. Casale said. “Thus, holistic patient care for severe asthma is critical, and mepolizumab provides tangible clinical benefit despite the complexities of medical comorbidities.”

This study was funded by GlaxoSmithKline, and the company also funded graphic design support of the poster. Dr. Casale reports he has received research funds from GlaxoSmithKline. Four authors report being current or former GlaxoSmithKline employees; three authors report holding stock and/or shares of GlaxoSmithKline. Three authors are IBM Watson Health employees, a company GlaxoSmithKline has provided research funding.

Patients with severe asthma and comorbid atopy, obesity, and depression/anxiety had fewer annual exacerbations after receiving mepolizumab, according to research from the annual meeting of the American Academy of Allergy, Asthma, and Immunology.

“Mepolizumab has clearly been shown to improve severe asthma control in many clinical trials, but atopy, obesity, and depression/anxiety affect patients with asthma at an increased rate,” Thomas B. Casale, MD, former AAAAI president and professor of medicine and pediatrics at the University of South Florida in Tampa, said in a presentation at the meeting. “Yet, few studies have examined whether asthma therapy with these comorbidities works.”

Dr. Casale and colleagues performed a retrospective analysis of patients in the United States from the MarketScan Commercial and Medicare Supplemental Database between November 2014 and December 2018 who had atopy, obesity, or depression/anxiety in addition to asthma and were receiving mepolizumab. Atopy in the study was defined as allergic rhinitis, anaphylaxis, atopic dermatitis, conjunctivitis, eosinophilic esophagitis, and food allergies. Patients were at least age 12 years, had at least one diagnosis for asthma, at least one diagnosis code for atopic disease, obesity, or depression/anxiety at baseline, and at least two administrations of mepolizumab within 180 days.

The researchers examined the number of exacerbations, oral corticosteroid (OCS) claims, and OCS bursts per year at 12-month follow-up, compared with baseline. They identified exacerbations by examining patients who had an emergency department or outpatient claim related to their asthma, and a claim for systemic corticosteroids made in the 4 days prior to or 5 days after a visit, or if their inpatient hospital admission contained a primary asthma diagnosis. Dr. Casale and colleagues measured OCS bursts as a pharmacy claim of at least 20 mg of prednisone per day for between 3 and 28 days plus a claim for an emergency department visit related to asthma in the 7 days prior or 6 days after the claim.

At baseline, patients across all groups were mean age 50.5-52.4 years with a Charleson Comorbidity Index score between 1.1 and 1.4, a majority were women (59.0%-72.0%) and nearly all were commercially insured (88.0%-90.0%). Patients who used biologics at baseline and/or used a biologic that wasn’t mepolizumab during the follow-up period were excluded.

Medication claims in the groups included inhaled corticosteroids (ICS) (36.8%-48.6%), ICS/long-acting beta-agonist (LABA) (60.2%-63.0%), LABA/ long-acting muscarinic antagonist (LAMA) (1.2%-3.5%), ICS/LABA/LAMA (21.2%-25.1%), short-acting beta-agonist (SABA) (83.2%-87.7%), LAMA alone (33.5%-42.1%), or leukotriene receptor antagonist (LTRA).

In the non–mutually exclusive group of patients with atopy (468 patients), 28.0% had comorbid obesity and 26.0% had comorbid depression/anxiety. For patients with obesity categorized in a non–mutually exclusive subgroup (171 patients), 79.0% had comorbid atopy and 32.0% had comorbid depression/anxiety. Among patients with non–mutually exclusive depression/anxiety (173 patients), 70.0% had comorbid atopy, while 32.0% had comorbid obesity.

The results showed the mean number of overall exacerbations decreased by 48% at 12 months in the atopic group (2.3 vs. 1.2; P < .001), 52% in the group with obesity (2.5 vs. 1.2; P < .001), and 38% in the depression/anxiety group (2.4 vs. 1.5; P < .001). The mean number of exacerbations leading to hospitalizations decreased by 64% in the atopic group (0.11 vs. 0.04; P < .001), 65% in the group with obesity (0.20 vs. 0.07; P < .001), and 68% in the group with depression/anxiety (0.22 vs. 0.07; P < .001).

The researchers also found the mean number of OCS claims and OCS bursts also significantly decreased over the 12-month follow-up period. Mean OCS claims decreased by 33% for patients in the atopic group (5.5 vs. 3.7; P < .001), by 38% in the group with obesity (6.1 vs. 3.8; P < .001), and by 31% in the group with depression/anxiety (6.2 vs. 4.3; P < .001).

The mean number of OCS bursts also significantly decreased by 40% in the atopic group (2.0 vs. 2.1; P < .001), 48% in the group with obesity (2.3 vs. 1.2; P < .001), and by 37% in the group with depression/anxiety (1.9 vs. 1.2; P < .001). In total, 69% of patients with comorbid atopy, 70.8% of patients with comorbid obesity, and 68.2% of patients with comorbid depression/anxiety experienced a mean decrease in their OCS dose over 12 months.

“These data demonstrate that patients with asthma and atopy, obesity, or depression and anxiety have significantly fewer exacerbations and reduced OCS use in a real-world setting with treatment of mepolizumab,” Dr. Casale said. “Thus, holistic patient care for severe asthma is critical, and mepolizumab provides tangible clinical benefit despite the complexities of medical comorbidities.”

This study was funded by GlaxoSmithKline, and the company also funded graphic design support of the poster. Dr. Casale reports he has received research funds from GlaxoSmithKline. Four authors report being current or former GlaxoSmithKline employees; three authors report holding stock and/or shares of GlaxoSmithKline. Three authors are IBM Watson Health employees, a company GlaxoSmithKline has provided research funding.

Patients with severe asthma and comorbid atopy, obesity, and depression/anxiety had fewer annual exacerbations after receiving mepolizumab, according to research from the annual meeting of the American Academy of Allergy, Asthma, and Immunology.

“Mepolizumab has clearly been shown to improve severe asthma control in many clinical trials, but atopy, obesity, and depression/anxiety affect patients with asthma at an increased rate,” Thomas B. Casale, MD, former AAAAI president and professor of medicine and pediatrics at the University of South Florida in Tampa, said in a presentation at the meeting. “Yet, few studies have examined whether asthma therapy with these comorbidities works.”

Dr. Casale and colleagues performed a retrospective analysis of patients in the United States from the MarketScan Commercial and Medicare Supplemental Database between November 2014 and December 2018 who had atopy, obesity, or depression/anxiety in addition to asthma and were receiving mepolizumab. Atopy in the study was defined as allergic rhinitis, anaphylaxis, atopic dermatitis, conjunctivitis, eosinophilic esophagitis, and food allergies. Patients were at least age 12 years, had at least one diagnosis for asthma, at least one diagnosis code for atopic disease, obesity, or depression/anxiety at baseline, and at least two administrations of mepolizumab within 180 days.

The researchers examined the number of exacerbations, oral corticosteroid (OCS) claims, and OCS bursts per year at 12-month follow-up, compared with baseline. They identified exacerbations by examining patients who had an emergency department or outpatient claim related to their asthma, and a claim for systemic corticosteroids made in the 4 days prior to or 5 days after a visit, or if their inpatient hospital admission contained a primary asthma diagnosis. Dr. Casale and colleagues measured OCS bursts as a pharmacy claim of at least 20 mg of prednisone per day for between 3 and 28 days plus a claim for an emergency department visit related to asthma in the 7 days prior or 6 days after the claim.

At baseline, patients across all groups were mean age 50.5-52.4 years with a Charleson Comorbidity Index score between 1.1 and 1.4, a majority were women (59.0%-72.0%) and nearly all were commercially insured (88.0%-90.0%). Patients who used biologics at baseline and/or used a biologic that wasn’t mepolizumab during the follow-up period were excluded.

Medication claims in the groups included inhaled corticosteroids (ICS) (36.8%-48.6%), ICS/long-acting beta-agonist (LABA) (60.2%-63.0%), LABA/ long-acting muscarinic antagonist (LAMA) (1.2%-3.5%), ICS/LABA/LAMA (21.2%-25.1%), short-acting beta-agonist (SABA) (83.2%-87.7%), LAMA alone (33.5%-42.1%), or leukotriene receptor antagonist (LTRA).

In the non–mutually exclusive group of patients with atopy (468 patients), 28.0% had comorbid obesity and 26.0% had comorbid depression/anxiety. For patients with obesity categorized in a non–mutually exclusive subgroup (171 patients), 79.0% had comorbid atopy and 32.0% had comorbid depression/anxiety. Among patients with non–mutually exclusive depression/anxiety (173 patients), 70.0% had comorbid atopy, while 32.0% had comorbid obesity.

The results showed the mean number of overall exacerbations decreased by 48% at 12 months in the atopic group (2.3 vs. 1.2; P < .001), 52% in the group with obesity (2.5 vs. 1.2; P < .001), and 38% in the depression/anxiety group (2.4 vs. 1.5; P < .001). The mean number of exacerbations leading to hospitalizations decreased by 64% in the atopic group (0.11 vs. 0.04; P < .001), 65% in the group with obesity (0.20 vs. 0.07; P < .001), and 68% in the group with depression/anxiety (0.22 vs. 0.07; P < .001).

The researchers also found the mean number of OCS claims and OCS bursts also significantly decreased over the 12-month follow-up period. Mean OCS claims decreased by 33% for patients in the atopic group (5.5 vs. 3.7; P < .001), by 38% in the group with obesity (6.1 vs. 3.8; P < .001), and by 31% in the group with depression/anxiety (6.2 vs. 4.3; P < .001).

The mean number of OCS bursts also significantly decreased by 40% in the atopic group (2.0 vs. 2.1; P < .001), 48% in the group with obesity (2.3 vs. 1.2; P < .001), and by 37% in the group with depression/anxiety (1.9 vs. 1.2; P < .001). In total, 69% of patients with comorbid atopy, 70.8% of patients with comorbid obesity, and 68.2% of patients with comorbid depression/anxiety experienced a mean decrease in their OCS dose over 12 months.

“These data demonstrate that patients with asthma and atopy, obesity, or depression and anxiety have significantly fewer exacerbations and reduced OCS use in a real-world setting with treatment of mepolizumab,” Dr. Casale said. “Thus, holistic patient care for severe asthma is critical, and mepolizumab provides tangible clinical benefit despite the complexities of medical comorbidities.”

This study was funded by GlaxoSmithKline, and the company also funded graphic design support of the poster. Dr. Casale reports he has received research funds from GlaxoSmithKline. Four authors report being current or former GlaxoSmithKline employees; three authors report holding stock and/or shares of GlaxoSmithKline. Three authors are IBM Watson Health employees, a company GlaxoSmithKline has provided research funding.

Among individuals with asthma and allergies who use cannabis, more than half said they aren’t willing to discuss their use of cannabis with their doctor and their doctor doesn’t ask, according to recent research at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

VladK213/Getty Images

In an online survey of respondents with asthma and allergies in the Allergy & Asthma Network, 88 of 489 (18.0%) reported cannabis use. Of these respondents, 37.5% said they wanted to discuss their cannabis use with their doctor, 51.1% said they would not want to, and 11.4% reported they were unsure. In addition, 40.9% of respondents said their doctor inquired about cannabis use, while 51.1% said their doctor did not bring up cannabis use at all, either through a verbal discussion or on an intake form.

To date, there has not been much research on use of cannabis among patients with allergies and asthma, Joanna S. Zeiger, MS, PhD, of the Canna Research Foundation in Boulder, Colo., said in her presentation. “This is a group with whom route of administration could have broad adverse effects. Smoking or vaping cannabis in this population could lead to increased symptoms of cough and wheeze, as well as increased use of asthma medications and exacerbations of their disease.”

Dr. Zeiger and colleagues recruited 489 respondents for the AAN Pain, Exercise, and Cannabis Experience Survey study through social media channels between May 2020 and September 2020. In the survey, the researchers asked questions about the nature of the respondent’s cannabis use (medical, recreational, or both), the types of cannabinoids used (tetrahydrocannabinol [THC], cannabidiol [CBD], or both), the route of administration (capsule, edible, oil/tincture, smoke, spray, topical, or vaporizer), and subjective effects. Most of the respondents reported using both THC and CBD, with smoking, edibles, and vaping being the most comment route of administration.

Of the 88 respondents who said they currently used cannabis, 60.2% were aged less than 50 years, 72.4% were women, and 71.6% were White. A majority of respondents had been using cannabis for 3 or more years (54.5%) , used it less than one time per day (60.2%), and used it for pain (68.2%). Current asthma was reported in 51 respondents (58.0%), and 39.2% had uncontrolled asthma. Half of those respondents with uncontrolled asthma reported smoking cannabis, and 25.0% reported coughing because of cannabis. Both THC and CBD were used by 47.7% of respondents; 33% reported THC use alone, while 19.3% used CBD alone.

Reported effects of cannabis use

The most common positive effects of using cannabis reported among respondents were that it helped with sleep (66 respondents), calmed them down (60 respondents), reduced pain (60 respondents), or decreased anxiety (59 respondents). Many respondents who reported positive effects were using both THC and CBD. For example, respondents who reported using cannabinoids for calming, 46.7% reported using both, compared with 36.7% who used THC only and 16.7% who used CBD only. Among respondents who reported that cannabis helped them sleep, 51.5% used both THC and CBD.

Regarding adverse effects, there were no significant differences based on use of THC or CBD, but 31.9% of respondents who said they smoked cannabis and 4.9% of respondents who used cannabis through a route of administration that wasn’t smoking reported they coughed with their cannabis use (P < .001). No respondents reported anaphyalaxis, although, among individuals who did not use cannabis, 2.5% reported a cannabis allergy.
 

‘Cannabis allergy is real’

Commenting on the research, Gordon L. Sussman MD, allergist, clinical immunologist, and clinical professor of medicine at the University of Toronto, said the survey is a thorough questionnaire that is likely representative of attitudes about cannabis in the United States and countries where cannabis is not broadly legalized.

Cannabis allergy, however, is not uncommon, and “is something that people should be aware of,” he said. “Cannabis IgE allergy is real, is probably fairly common, and is something that [clinicians] should be asking about routinely.”

One limitation of the research was not knowing the number of people who declined to answer the survey, as there may be a bias in the results toward people who want to answer the questions, compared with those who did not want to answer. “When you do a survey, only a certain number of people are going to answer, and [you also want input from] people that don’t answer,” Dr. Sussman said.

Dr. Sussman acknowledged it can be difficult to get patients to admit cannabis use, even in countries like Canada where it is legal. Surveys like the one administered by Dr. Zeiger and colleagues are “the first step” to getting updated assessments of cannabis attitudes and recommendations. “The next step is doing an international survey, so you get different countries’ viewpoints and perspectives,” he said.

This study was supported by the Allergy & Asthma Network and the Canna Research Foundation. Three authors are affiliated with the Canna Research Foundation. Dr. Sussman reported no financial conflicts of interest. Dr. Sussman participates in the International Cannabis Allergy KAP Collaboration, a group founded by one of the coauthors, William Silvers, MD, but Dr. Sussman was not involved with this study.

Among individuals with asthma and allergies who use cannabis, more than half said they aren’t willing to discuss their use of cannabis with their doctor and their doctor doesn’t ask, according to recent research at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

VladK213/Getty Images

In an online survey of respondents with asthma and allergies in the Allergy & Asthma Network, 88 of 489 (18.0%) reported cannabis use. Of these respondents, 37.5% said they wanted to discuss their cannabis use with their doctor, 51.1% said they would not want to, and 11.4% reported they were unsure. In addition, 40.9% of respondents said their doctor inquired about cannabis use, while 51.1% said their doctor did not bring up cannabis use at all, either through a verbal discussion or on an intake form.

To date, there has not been much research on use of cannabis among patients with allergies and asthma, Joanna S. Zeiger, MS, PhD, of the Canna Research Foundation in Boulder, Colo., said in her presentation. “This is a group with whom route of administration could have broad adverse effects. Smoking or vaping cannabis in this population could lead to increased symptoms of cough and wheeze, as well as increased use of asthma medications and exacerbations of their disease.”

Dr. Zeiger and colleagues recruited 489 respondents for the AAN Pain, Exercise, and Cannabis Experience Survey study through social media channels between May 2020 and September 2020. In the survey, the researchers asked questions about the nature of the respondent’s cannabis use (medical, recreational, or both), the types of cannabinoids used (tetrahydrocannabinol [THC], cannabidiol [CBD], or both), the route of administration (capsule, edible, oil/tincture, smoke, spray, topical, or vaporizer), and subjective effects. Most of the respondents reported using both THC and CBD, with smoking, edibles, and vaping being the most comment route of administration.

Of the 88 respondents who said they currently used cannabis, 60.2% were aged less than 50 years, 72.4% were women, and 71.6% were White. A majority of respondents had been using cannabis for 3 or more years (54.5%) , used it less than one time per day (60.2%), and used it for pain (68.2%). Current asthma was reported in 51 respondents (58.0%), and 39.2% had uncontrolled asthma. Half of those respondents with uncontrolled asthma reported smoking cannabis, and 25.0% reported coughing because of cannabis. Both THC and CBD were used by 47.7% of respondents; 33% reported THC use alone, while 19.3% used CBD alone.

Reported effects of cannabis use

The most common positive effects of using cannabis reported among respondents were that it helped with sleep (66 respondents), calmed them down (60 respondents), reduced pain (60 respondents), or decreased anxiety (59 respondents). Many respondents who reported positive effects were using both THC and CBD. For example, respondents who reported using cannabinoids for calming, 46.7% reported using both, compared with 36.7% who used THC only and 16.7% who used CBD only. Among respondents who reported that cannabis helped them sleep, 51.5% used both THC and CBD.

Regarding adverse effects, there were no significant differences based on use of THC or CBD, but 31.9% of respondents who said they smoked cannabis and 4.9% of respondents who used cannabis through a route of administration that wasn’t smoking reported they coughed with their cannabis use (P < .001). No respondents reported anaphyalaxis, although, among individuals who did not use cannabis, 2.5% reported a cannabis allergy.
 

‘Cannabis allergy is real’

Commenting on the research, Gordon L. Sussman MD, allergist, clinical immunologist, and clinical professor of medicine at the University of Toronto, said the survey is a thorough questionnaire that is likely representative of attitudes about cannabis in the United States and countries where cannabis is not broadly legalized.

Cannabis allergy, however, is not uncommon, and “is something that people should be aware of,” he said. “Cannabis IgE allergy is real, is probably fairly common, and is something that [clinicians] should be asking about routinely.”

One limitation of the research was not knowing the number of people who declined to answer the survey, as there may be a bias in the results toward people who want to answer the questions, compared with those who did not want to answer. “When you do a survey, only a certain number of people are going to answer, and [you also want input from] people that don’t answer,” Dr. Sussman said.

Dr. Sussman acknowledged it can be difficult to get patients to admit cannabis use, even in countries like Canada where it is legal. Surveys like the one administered by Dr. Zeiger and colleagues are “the first step” to getting updated assessments of cannabis attitudes and recommendations. “The next step is doing an international survey, so you get different countries’ viewpoints and perspectives,” he said.

This study was supported by the Allergy & Asthma Network and the Canna Research Foundation. Three authors are affiliated with the Canna Research Foundation. Dr. Sussman reported no financial conflicts of interest. Dr. Sussman participates in the International Cannabis Allergy KAP Collaboration, a group founded by one of the coauthors, William Silvers, MD, but Dr. Sussman was not involved with this study.

Among individuals with asthma and allergies who use cannabis, more than half said they aren’t willing to discuss their use of cannabis with their doctor and their doctor doesn’t ask, according to recent research at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

VladK213/Getty Images

In an online survey of respondents with asthma and allergies in the Allergy & Asthma Network, 88 of 489 (18.0%) reported cannabis use. Of these respondents, 37.5% said they wanted to discuss their cannabis use with their doctor, 51.1% said they would not want to, and 11.4% reported they were unsure. In addition, 40.9% of respondents said their doctor inquired about cannabis use, while 51.1% said their doctor did not bring up cannabis use at all, either through a verbal discussion or on an intake form.

To date, there has not been much research on use of cannabis among patients with allergies and asthma, Joanna S. Zeiger, MS, PhD, of the Canna Research Foundation in Boulder, Colo., said in her presentation. “This is a group with whom route of administration could have broad adverse effects. Smoking or vaping cannabis in this population could lead to increased symptoms of cough and wheeze, as well as increased use of asthma medications and exacerbations of their disease.”

Dr. Zeiger and colleagues recruited 489 respondents for the AAN Pain, Exercise, and Cannabis Experience Survey study through social media channels between May 2020 and September 2020. In the survey, the researchers asked questions about the nature of the respondent’s cannabis use (medical, recreational, or both), the types of cannabinoids used (tetrahydrocannabinol [THC], cannabidiol [CBD], or both), the route of administration (capsule, edible, oil/tincture, smoke, spray, topical, or vaporizer), and subjective effects. Most of the respondents reported using both THC and CBD, with smoking, edibles, and vaping being the most comment route of administration.

Of the 88 respondents who said they currently used cannabis, 60.2% were aged less than 50 years, 72.4% were women, and 71.6% were White. A majority of respondents had been using cannabis for 3 or more years (54.5%) , used it less than one time per day (60.2%), and used it for pain (68.2%). Current asthma was reported in 51 respondents (58.0%), and 39.2% had uncontrolled asthma. Half of those respondents with uncontrolled asthma reported smoking cannabis, and 25.0% reported coughing because of cannabis. Both THC and CBD were used by 47.7% of respondents; 33% reported THC use alone, while 19.3% used CBD alone.

Reported effects of cannabis use

The most common positive effects of using cannabis reported among respondents were that it helped with sleep (66 respondents), calmed them down (60 respondents), reduced pain (60 respondents), or decreased anxiety (59 respondents). Many respondents who reported positive effects were using both THC and CBD. For example, respondents who reported using cannabinoids for calming, 46.7% reported using both, compared with 36.7% who used THC only and 16.7% who used CBD only. Among respondents who reported that cannabis helped them sleep, 51.5% used both THC and CBD.

Regarding adverse effects, there were no significant differences based on use of THC or CBD, but 31.9% of respondents who said they smoked cannabis and 4.9% of respondents who used cannabis through a route of administration that wasn’t smoking reported they coughed with their cannabis use (P < .001). No respondents reported anaphyalaxis, although, among individuals who did not use cannabis, 2.5% reported a cannabis allergy.
 

‘Cannabis allergy is real’

Commenting on the research, Gordon L. Sussman MD, allergist, clinical immunologist, and clinical professor of medicine at the University of Toronto, said the survey is a thorough questionnaire that is likely representative of attitudes about cannabis in the United States and countries where cannabis is not broadly legalized.

Cannabis allergy, however, is not uncommon, and “is something that people should be aware of,” he said. “Cannabis IgE allergy is real, is probably fairly common, and is something that [clinicians] should be asking about routinely.”

One limitation of the research was not knowing the number of people who declined to answer the survey, as there may be a bias in the results toward people who want to answer the questions, compared with those who did not want to answer. “When you do a survey, only a certain number of people are going to answer, and [you also want input from] people that don’t answer,” Dr. Sussman said.

Dr. Sussman acknowledged it can be difficult to get patients to admit cannabis use, even in countries like Canada where it is legal. Surveys like the one administered by Dr. Zeiger and colleagues are “the first step” to getting updated assessments of cannabis attitudes and recommendations. “The next step is doing an international survey, so you get different countries’ viewpoints and perspectives,” he said.

This study was supported by the Allergy & Asthma Network and the Canna Research Foundation. Three authors are affiliated with the Canna Research Foundation. Dr. Sussman reported no financial conflicts of interest. Dr. Sussman participates in the International Cannabis Allergy KAP Collaboration, a group founded by one of the coauthors, William Silvers, MD, but Dr. Sussman was not involved with this study.

Sublingual immunotherapy for the treatment of peanut allergy is safe and effective, even in children as young as age 1 year.

In a double-blind, placebo-controlled, food challenge (DBPCFC) of some 36 peanut-allergic children (mean age 2.2 years, range 1-4 years), those who were randomly assigned to receive peanut sublingual immunotherapy (PNSLIT) showed significant desensitization compared with those who received placebo.

In addition, there was a “strong potential” for sustained unresponsiveness at 3 months for the toddlers who received the active treatment.

The findings were presented in a late breaking oral abstract session at the 2021 American Academy of Allergy, Asthma & Immunology virtual annual meeting (Abstract L2).

“A year ago, the Food and Drug Administration approved the oral agent Palforzia (peanut allergen powder) for the treatment of peanut allergy in children 4 and older, and it is a great option, but I think what we have learned over time is that this approach is not for everybody,” Edwin H. Kim, MD, director of the UNC Food Allergy Initiative, University of North Carolina at Chapel Hill, said in an interview.

Palforzia is a powder that is mixed in food like yogurt or pudding which the child then eats daily, according to a rigorous schedule. But Palforzia treatment presents some difficulties.

“Palforzia requires getting the powder dose, mixing it with food, like pudding or apple sauce, then eating it, which can take up to 30 minutes depending on age and kids’ cooperation. It tastes and smells like peanut which can cause aversion. Kids have to refrain from exercise or strenuous activity for at least 30 minutes before and after dosing and have to be observed for up to 2 hours post dose for symptoms,” Dr. Kim said.

“It’s a great drug, but the treatment could be overly difficult for certain families to be able to do, and in some cases the side effects may be more than certain patients are able or willing to handle, so there is a real urgent need for alternative approaches,” Dr. Kim said. “SLIT is several drops under the tongue, held for 2 minutes, swallowed and done.”

In the current placebo-controlled study, he and his group tested the feasibility, efficacy, and safety of the sublingual approach to peanut allergy in children age 4 years and younger.

Both groups were similar with regard to gender, race, ethnicity, atopic history, peanut skin prick test, and qualifying DBPCFC, and all children were previously allergic with positive blood and skin tests, with a positive reaction during baseline food challenge, thus proving the allergy and establishing the baseline threshold.

“We have learned from some studies, for instance the DEVIL and LEAP studies, that strongly suggest that the immune systems in younger patients may be more amenable to change, and there may be some justification for early intervention,” he said.

“Based on both of those ideas, we wanted to take our sublingual approach, which we have shown to have a pretty good efficacy in older children, and bring it down to this younger group and see if it still could have the same efficacy and also maintain what seems to be a very good safety signal.”

The researchers randomly assigned the children to receive PNSLIT at a daily maintenance dose of 4 mg peanut protein (n = 19) or to receive placebo (n = 17) for 36 months.

“There was a 5- to 6-month buildup period where the SLIT dose was increased every 1-2 weeks up to the target dose of 4 mg, and then the final dose of 4 mg was continued through to the end of the study,” Dr. Kim noted.

Over a total of 20,593 potential dosing days, the children took 91.2% of SLIT doses and 93.5% of placebo doses.

At the end of the 3-year study period, the children were challenged by DBPCFC with up to 4,333 mg of peanut protein.

Sustained unresponsiveness was assessed by an identical DBPCFC after discontinuation of the immunotherapy for 3 months.

Cumulative tolerated dose increased from a median of 143 mg to 4,443 mg in the PNSLIT group, compared with a median of 43 mg to 143 mg in the placebo group (P < .0001).

Fourteen of the children receiving PNSLIT, and none of the children receiving placebo, passed the desensitization food challenge. Twelve of the children receiving PNSLIT and two of the children receiving placebo passed the sustained unresponsiveness challenge.

Children who underwent the immunotherapy saw a decrease in their peanut skin prick test from 10 mm to 3.25 mm, compared to an increase from 11.5 mm to 12 mm with placebo (P < .0001).

The most common side effect reported was itching or irritation in the mouth. Most side effects resolved on their own, although some patients used an antihistamine. Getting children as young as 1 to hold the dose under their tongue was a challenge in some instances, but it eventually worked out, Dr. Kim said.

“It took a lot of work from the parents as well as from our research coordinators in trying to train these young kids to, first of all, allow us to put the peanut medication in the mouth and then to try as best as possible to keep it in their mouth for up to 2 minutes, but the families involved in our study were very dedicated and so we were able to get through that,” he said.
 

Study merits larger numbers

“Among the 36 who completed the 3 years of therapy, the authors report significant rates of desensitization among treated children compared with those receiving placebo. Furthermore, this effect was persistent for at least 3 months after stopping therapy in a subgroup of the children,” said Leonard B. Bacharier, MD, director of the Center for Pediatric Asthma, Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tenn.

“Overall, these findings suggest the promise of peanut SLIT, which should be studied in larger numbers of preschool children,” Dr. Bacharier, who was not part of the study, said in an interview.

Jonathan A. Bernstein, MD, professor of medicine, University of Cincinnati, agreed.

“It’s a well-designed study, it’s small, but it’s promising,” Dr. Bernstein, who was not involved with the study, said in an interview.

“They did show that most of the patients who got the sublingual therapy were able to get to the target dose and develop tolerance, so I think it’s promising. We know that this stuff works. This is just more data from a well-controlled study in a younger population,” he said.

“We do OIT [oral immunotherapy] and sublingual but we don’t do it in such young children in our practice. The youngest is 3 years old, because they have to understand what is going on and cooperate. If they don’t cooperate it’s not possible.”

Dr. Kim reported financial relationships with DBV Technologies, Kenota Health, Ukko, Aimmune Therapeutics, ALK, AllerGenis, Belhaven Pharma, Duke Clinical Research Institute, Nutricia, NIH/NIAID, NIH/NCCIH, NIH/Immune Tolerance Network, FARE, and the Wallace Foundation. Dr. Bacharier and Dr. Bernstein have disclosed no relevant financial relationships.

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

Sublingual immunotherapy for the treatment of peanut allergy is safe and effective, even in children as young as age 1 year.

In a double-blind, placebo-controlled, food challenge (DBPCFC) of some 36 peanut-allergic children (mean age 2.2 years, range 1-4 years), those who were randomly assigned to receive peanut sublingual immunotherapy (PNSLIT) showed significant desensitization compared with those who received placebo.

In addition, there was a “strong potential” for sustained unresponsiveness at 3 months for the toddlers who received the active treatment.

The findings were presented in a late breaking oral abstract session at the 2021 American Academy of Allergy, Asthma & Immunology virtual annual meeting (Abstract L2).

“A year ago, the Food and Drug Administration approved the oral agent Palforzia (peanut allergen powder) for the treatment of peanut allergy in children 4 and older, and it is a great option, but I think what we have learned over time is that this approach is not for everybody,” Edwin H. Kim, MD, director of the UNC Food Allergy Initiative, University of North Carolina at Chapel Hill, said in an interview.

Palforzia is a powder that is mixed in food like yogurt or pudding which the child then eats daily, according to a rigorous schedule. But Palforzia treatment presents some difficulties.

“Palforzia requires getting the powder dose, mixing it with food, like pudding or apple sauce, then eating it, which can take up to 30 minutes depending on age and kids’ cooperation. It tastes and smells like peanut which can cause aversion. Kids have to refrain from exercise or strenuous activity for at least 30 minutes before and after dosing and have to be observed for up to 2 hours post dose for symptoms,” Dr. Kim said.

“It’s a great drug, but the treatment could be overly difficult for certain families to be able to do, and in some cases the side effects may be more than certain patients are able or willing to handle, so there is a real urgent need for alternative approaches,” Dr. Kim said. “SLIT is several drops under the tongue, held for 2 minutes, swallowed and done.”

In the current placebo-controlled study, he and his group tested the feasibility, efficacy, and safety of the sublingual approach to peanut allergy in children age 4 years and younger.

Both groups were similar with regard to gender, race, ethnicity, atopic history, peanut skin prick test, and qualifying DBPCFC, and all children were previously allergic with positive blood and skin tests, with a positive reaction during baseline food challenge, thus proving the allergy and establishing the baseline threshold.

“We have learned from some studies, for instance the DEVIL and LEAP studies, that strongly suggest that the immune systems in younger patients may be more amenable to change, and there may be some justification for early intervention,” he said.

“Based on both of those ideas, we wanted to take our sublingual approach, which we have shown to have a pretty good efficacy in older children, and bring it down to this younger group and see if it still could have the same efficacy and also maintain what seems to be a very good safety signal.”

The researchers randomly assigned the children to receive PNSLIT at a daily maintenance dose of 4 mg peanut protein (n = 19) or to receive placebo (n = 17) for 36 months.

“There was a 5- to 6-month buildup period where the SLIT dose was increased every 1-2 weeks up to the target dose of 4 mg, and then the final dose of 4 mg was continued through to the end of the study,” Dr. Kim noted.

Over a total of 20,593 potential dosing days, the children took 91.2% of SLIT doses and 93.5% of placebo doses.

At the end of the 3-year study period, the children were challenged by DBPCFC with up to 4,333 mg of peanut protein.

Sustained unresponsiveness was assessed by an identical DBPCFC after discontinuation of the immunotherapy for 3 months.

Cumulative tolerated dose increased from a median of 143 mg to 4,443 mg in the PNSLIT group, compared with a median of 43 mg to 143 mg in the placebo group (P < .0001).

Fourteen of the children receiving PNSLIT, and none of the children receiving placebo, passed the desensitization food challenge. Twelve of the children receiving PNSLIT and two of the children receiving placebo passed the sustained unresponsiveness challenge.

Children who underwent the immunotherapy saw a decrease in their peanut skin prick test from 10 mm to 3.25 mm, compared to an increase from 11.5 mm to 12 mm with placebo (P < .0001).

The most common side effect reported was itching or irritation in the mouth. Most side effects resolved on their own, although some patients used an antihistamine. Getting children as young as 1 to hold the dose under their tongue was a challenge in some instances, but it eventually worked out, Dr. Kim said.

“It took a lot of work from the parents as well as from our research coordinators in trying to train these young kids to, first of all, allow us to put the peanut medication in the mouth and then to try as best as possible to keep it in their mouth for up to 2 minutes, but the families involved in our study were very dedicated and so we were able to get through that,” he said.
 

Study merits larger numbers

“Among the 36 who completed the 3 years of therapy, the authors report significant rates of desensitization among treated children compared with those receiving placebo. Furthermore, this effect was persistent for at least 3 months after stopping therapy in a subgroup of the children,” said Leonard B. Bacharier, MD, director of the Center for Pediatric Asthma, Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tenn.

“Overall, these findings suggest the promise of peanut SLIT, which should be studied in larger numbers of preschool children,” Dr. Bacharier, who was not part of the study, said in an interview.

Jonathan A. Bernstein, MD, professor of medicine, University of Cincinnati, agreed.

“It’s a well-designed study, it’s small, but it’s promising,” Dr. Bernstein, who was not involved with the study, said in an interview.

“They did show that most of the patients who got the sublingual therapy were able to get to the target dose and develop tolerance, so I think it’s promising. We know that this stuff works. This is just more data from a well-controlled study in a younger population,” he said.

“We do OIT [oral immunotherapy] and sublingual but we don’t do it in such young children in our practice. The youngest is 3 years old, because they have to understand what is going on and cooperate. If they don’t cooperate it’s not possible.”

Dr. Kim reported financial relationships with DBV Technologies, Kenota Health, Ukko, Aimmune Therapeutics, ALK, AllerGenis, Belhaven Pharma, Duke Clinical Research Institute, Nutricia, NIH/NIAID, NIH/NCCIH, NIH/Immune Tolerance Network, FARE, and the Wallace Foundation. Dr. Bacharier and Dr. Bernstein have disclosed no relevant financial relationships.

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

Sublingual immunotherapy for the treatment of peanut allergy is safe and effective, even in children as young as age 1 year.

In a double-blind, placebo-controlled, food challenge (DBPCFC) of some 36 peanut-allergic children (mean age 2.2 years, range 1-4 years), those who were randomly assigned to receive peanut sublingual immunotherapy (PNSLIT) showed significant desensitization compared with those who received placebo.

In addition, there was a “strong potential” for sustained unresponsiveness at 3 months for the toddlers who received the active treatment.

The findings were presented in a late breaking oral abstract session at the 2021 American Academy of Allergy, Asthma & Immunology virtual annual meeting (Abstract L2).

“A year ago, the Food and Drug Administration approved the oral agent Palforzia (peanut allergen powder) for the treatment of peanut allergy in children 4 and older, and it is a great option, but I think what we have learned over time is that this approach is not for everybody,” Edwin H. Kim, MD, director of the UNC Food Allergy Initiative, University of North Carolina at Chapel Hill, said in an interview.

Palforzia is a powder that is mixed in food like yogurt or pudding which the child then eats daily, according to a rigorous schedule. But Palforzia treatment presents some difficulties.

“Palforzia requires getting the powder dose, mixing it with food, like pudding or apple sauce, then eating it, which can take up to 30 minutes depending on age and kids’ cooperation. It tastes and smells like peanut which can cause aversion. Kids have to refrain from exercise or strenuous activity for at least 30 minutes before and after dosing and have to be observed for up to 2 hours post dose for symptoms,” Dr. Kim said.

“It’s a great drug, but the treatment could be overly difficult for certain families to be able to do, and in some cases the side effects may be more than certain patients are able or willing to handle, so there is a real urgent need for alternative approaches,” Dr. Kim said. “SLIT is several drops under the tongue, held for 2 minutes, swallowed and done.”

In the current placebo-controlled study, he and his group tested the feasibility, efficacy, and safety of the sublingual approach to peanut allergy in children age 4 years and younger.

Both groups were similar with regard to gender, race, ethnicity, atopic history, peanut skin prick test, and qualifying DBPCFC, and all children were previously allergic with positive blood and skin tests, with a positive reaction during baseline food challenge, thus proving the allergy and establishing the baseline threshold.

“We have learned from some studies, for instance the DEVIL and LEAP studies, that strongly suggest that the immune systems in younger patients may be more amenable to change, and there may be some justification for early intervention,” he said.

“Based on both of those ideas, we wanted to take our sublingual approach, which we have shown to have a pretty good efficacy in older children, and bring it down to this younger group and see if it still could have the same efficacy and also maintain what seems to be a very good safety signal.”

The researchers randomly assigned the children to receive PNSLIT at a daily maintenance dose of 4 mg peanut protein (n = 19) or to receive placebo (n = 17) for 36 months.

“There was a 5- to 6-month buildup period where the SLIT dose was increased every 1-2 weeks up to the target dose of 4 mg, and then the final dose of 4 mg was continued through to the end of the study,” Dr. Kim noted.

Over a total of 20,593 potential dosing days, the children took 91.2% of SLIT doses and 93.5% of placebo doses.

At the end of the 3-year study period, the children were challenged by DBPCFC with up to 4,333 mg of peanut protein.

Sustained unresponsiveness was assessed by an identical DBPCFC after discontinuation of the immunotherapy for 3 months.

Cumulative tolerated dose increased from a median of 143 mg to 4,443 mg in the PNSLIT group, compared with a median of 43 mg to 143 mg in the placebo group (P < .0001).

Fourteen of the children receiving PNSLIT, and none of the children receiving placebo, passed the desensitization food challenge. Twelve of the children receiving PNSLIT and two of the children receiving placebo passed the sustained unresponsiveness challenge.

Children who underwent the immunotherapy saw a decrease in their peanut skin prick test from 10 mm to 3.25 mm, compared to an increase from 11.5 mm to 12 mm with placebo (P < .0001).

The most common side effect reported was itching or irritation in the mouth. Most side effects resolved on their own, although some patients used an antihistamine. Getting children as young as 1 to hold the dose under their tongue was a challenge in some instances, but it eventually worked out, Dr. Kim said.

“It took a lot of work from the parents as well as from our research coordinators in trying to train these young kids to, first of all, allow us to put the peanut medication in the mouth and then to try as best as possible to keep it in their mouth for up to 2 minutes, but the families involved in our study were very dedicated and so we were able to get through that,” he said.
 

Study merits larger numbers

“Among the 36 who completed the 3 years of therapy, the authors report significant rates of desensitization among treated children compared with those receiving placebo. Furthermore, this effect was persistent for at least 3 months after stopping therapy in a subgroup of the children,” said Leonard B. Bacharier, MD, director of the Center for Pediatric Asthma, Monroe Carell Jr. Children’s Hospital at Vanderbilt, Nashville, Tenn.

“Overall, these findings suggest the promise of peanut SLIT, which should be studied in larger numbers of preschool children,” Dr. Bacharier, who was not part of the study, said in an interview.

Jonathan A. Bernstein, MD, professor of medicine, University of Cincinnati, agreed.

“It’s a well-designed study, it’s small, but it’s promising,” Dr. Bernstein, who was not involved with the study, said in an interview.

“They did show that most of the patients who got the sublingual therapy were able to get to the target dose and develop tolerance, so I think it’s promising. We know that this stuff works. This is just more data from a well-controlled study in a younger population,” he said.

“We do OIT [oral immunotherapy] and sublingual but we don’t do it in such young children in our practice. The youngest is 3 years old, because they have to understand what is going on and cooperate. If they don’t cooperate it’s not possible.”

Dr. Kim reported financial relationships with DBV Technologies, Kenota Health, Ukko, Aimmune Therapeutics, ALK, AllerGenis, Belhaven Pharma, Duke Clinical Research Institute, Nutricia, NIH/NIAID, NIH/NCCIH, NIH/Immune Tolerance Network, FARE, and the Wallace Foundation. Dr. Bacharier and Dr. Bernstein have disclosed no relevant financial relationships.

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

Asthma is not an independent risk factor for more severe disease or hospitalization due to COVID-19, according to recent research presented at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

“In our cohort of patients tested for SARS-CoV-2 at Stanford between March and September, asthma was not an independent risk factor in and of itself for hospitalization or more severe disease from COVID,” Lauren E. Eggert, MD, of the Sean N. Parker Center for Allergy and Asthma Research at Stanford (Calif.) University, said in a poster presentation at the meeting. “What’s more, allergic asthma actually decreased the risk of hospitalization by nearly half.”

Dr. Eggert noted that there have been conflicting data on whether comorbid asthma is or is not a risk factor for more severe COVID-19. “The general thought at the beginning of the pandemic was that because COVID-19 is predominantly a viral respiratory illness, and viral illnesses are known to cause asthma exacerbations, that patients with asthma may be at higher risk if they got COVID infection,” she explained. “But some of the data also showed that Th2 inflammation downregulates ACE2 receptor [expression], which has been shown to be the port of entry for the SARS-CoV-2 virus, so maybe allergy might have a protective effect.”

The researchers at Stanford University identified 168,190 patients at Stanford Health Care who had a positive real-time reverse transcriptase polymerase chain reaction (RT-PCR) test for SARS-CoV-2 between March and September 2020 and collected data from their electronic medical records on their history of asthma, if they were hospitalized, comorbid conditions, and laboratory values. Patients who had no other data available except for a positive SARS-CoV-2 result, or were younger than 28 days, were excluded from the study. Dr. Eggert and colleagues used COVID-19 treatment guidelines from the National Institutes of Health to assess disease severity, which grades COVID-19 severity as asymptomatic or presymptomatic infection, mild illness, moderate illness, severe illness, and critical illness.

In total, the researchers analyzed 5,596 patients who were SARS-CoV-2 positive, with 605 patients (10.8%) hospitalized within 14 days of receiving a positive test. Of these, 100 patients (16.5%) were patients with asthma. There were no significant differences between groups hospitalized and not hospitalized due to COVID-19 in patients with asthma and with no asthma.

Among patients with asthma and COVID-19, 28.0% had asymptomatic illness, 19.0% had moderate disease, 33.0% had severe disease, and 20.0% had critical COVID-19, compared with 36.0% of patients without asthma who had asymptomatic illness, 12.0% with moderate disease, 30.0% with severe disease, and 21.0% with critical COVID-19. Dr. Eggert and colleagues performed a univariate analysis, which showed a significant association between asthma and COVID-19 related hospitalization (odds ratio, 1.53; 95% confidence interval, 1.2-1.93; P < .001), but when adjusting for factors such as diabetes, obesity coronary heart disease, and hypertension, they found there was not a significant association between asthma and hospitalization due to COVID-19 (OR, 1.12; 95% CI, 0.86-1.45; P < .40).

In a univariate analysis, asthma was associated with more severe disease in patients hospitalized for COVID-19, but the results were not significant (OR, 1.21; 95% CI, 0.8-1.85; P = .37). When analyzing allergic asthma alone in a univariate analysis, the researchers found a significant association between allergic asthma and lower hospitalization risk, compared with patients who had nonallergic asthma (OR, 0.55; 95% CI, 0.31-0.92; P = .029), and this association remained after they performed a multivariate analysis as well.

“When we stratified by allergic asthma versus nonallergic asthma, we found that having a diagnosis of allergic asthma actually conferred a protective effect, and there was almost half the risk of hospitalization in asthmatics with allergic asthma as compared to others, which we thought was very interesting,” Dr. Eggert said.

“Eosinophil levels during hospitalization, even when adjusted for systemic steroid use – and we followed patients out through September, when dexamethasone was standard of care – also correlated with better outcomes,” she explained. “This is independent of asthmatic status.”

Asthma is not an independent risk factor for more severe disease or hospitalization due to COVID-19, according to recent research presented at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

“In our cohort of patients tested for SARS-CoV-2 at Stanford between March and September, asthma was not an independent risk factor in and of itself for hospitalization or more severe disease from COVID,” Lauren E. Eggert, MD, of the Sean N. Parker Center for Allergy and Asthma Research at Stanford (Calif.) University, said in a poster presentation at the meeting. “What’s more, allergic asthma actually decreased the risk of hospitalization by nearly half.”

Dr. Eggert noted that there have been conflicting data on whether comorbid asthma is or is not a risk factor for more severe COVID-19. “The general thought at the beginning of the pandemic was that because COVID-19 is predominantly a viral respiratory illness, and viral illnesses are known to cause asthma exacerbations, that patients with asthma may be at higher risk if they got COVID infection,” she explained. “But some of the data also showed that Th2 inflammation downregulates ACE2 receptor [expression], which has been shown to be the port of entry for the SARS-CoV-2 virus, so maybe allergy might have a protective effect.”

The researchers at Stanford University identified 168,190 patients at Stanford Health Care who had a positive real-time reverse transcriptase polymerase chain reaction (RT-PCR) test for SARS-CoV-2 between March and September 2020 and collected data from their electronic medical records on their history of asthma, if they were hospitalized, comorbid conditions, and laboratory values. Patients who had no other data available except for a positive SARS-CoV-2 result, or were younger than 28 days, were excluded from the study. Dr. Eggert and colleagues used COVID-19 treatment guidelines from the National Institutes of Health to assess disease severity, which grades COVID-19 severity as asymptomatic or presymptomatic infection, mild illness, moderate illness, severe illness, and critical illness.

In total, the researchers analyzed 5,596 patients who were SARS-CoV-2 positive, with 605 patients (10.8%) hospitalized within 14 days of receiving a positive test. Of these, 100 patients (16.5%) were patients with asthma. There were no significant differences between groups hospitalized and not hospitalized due to COVID-19 in patients with asthma and with no asthma.

Among patients with asthma and COVID-19, 28.0% had asymptomatic illness, 19.0% had moderate disease, 33.0% had severe disease, and 20.0% had critical COVID-19, compared with 36.0% of patients without asthma who had asymptomatic illness, 12.0% with moderate disease, 30.0% with severe disease, and 21.0% with critical COVID-19. Dr. Eggert and colleagues performed a univariate analysis, which showed a significant association between asthma and COVID-19 related hospitalization (odds ratio, 1.53; 95% confidence interval, 1.2-1.93; P < .001), but when adjusting for factors such as diabetes, obesity coronary heart disease, and hypertension, they found there was not a significant association between asthma and hospitalization due to COVID-19 (OR, 1.12; 95% CI, 0.86-1.45; P < .40).

In a univariate analysis, asthma was associated with more severe disease in patients hospitalized for COVID-19, but the results were not significant (OR, 1.21; 95% CI, 0.8-1.85; P = .37). When analyzing allergic asthma alone in a univariate analysis, the researchers found a significant association between allergic asthma and lower hospitalization risk, compared with patients who had nonallergic asthma (OR, 0.55; 95% CI, 0.31-0.92; P = .029), and this association remained after they performed a multivariate analysis as well.

“When we stratified by allergic asthma versus nonallergic asthma, we found that having a diagnosis of allergic asthma actually conferred a protective effect, and there was almost half the risk of hospitalization in asthmatics with allergic asthma as compared to others, which we thought was very interesting,” Dr. Eggert said.

“Eosinophil levels during hospitalization, even when adjusted for systemic steroid use – and we followed patients out through September, when dexamethasone was standard of care – also correlated with better outcomes,” she explained. “This is independent of asthmatic status.”

Asthma is not an independent risk factor for more severe disease or hospitalization due to COVID-19, according to recent research presented at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year.

“In our cohort of patients tested for SARS-CoV-2 at Stanford between March and September, asthma was not an independent risk factor in and of itself for hospitalization or more severe disease from COVID,” Lauren E. Eggert, MD, of the Sean N. Parker Center for Allergy and Asthma Research at Stanford (Calif.) University, said in a poster presentation at the meeting. “What’s more, allergic asthma actually decreased the risk of hospitalization by nearly half.”

Dr. Eggert noted that there have been conflicting data on whether comorbid asthma is or is not a risk factor for more severe COVID-19. “The general thought at the beginning of the pandemic was that because COVID-19 is predominantly a viral respiratory illness, and viral illnesses are known to cause asthma exacerbations, that patients with asthma may be at higher risk if they got COVID infection,” she explained. “But some of the data also showed that Th2 inflammation downregulates ACE2 receptor [expression], which has been shown to be the port of entry for the SARS-CoV-2 virus, so maybe allergy might have a protective effect.”

The researchers at Stanford University identified 168,190 patients at Stanford Health Care who had a positive real-time reverse transcriptase polymerase chain reaction (RT-PCR) test for SARS-CoV-2 between March and September 2020 and collected data from their electronic medical records on their history of asthma, if they were hospitalized, comorbid conditions, and laboratory values. Patients who had no other data available except for a positive SARS-CoV-2 result, or were younger than 28 days, were excluded from the study. Dr. Eggert and colleagues used COVID-19 treatment guidelines from the National Institutes of Health to assess disease severity, which grades COVID-19 severity as asymptomatic or presymptomatic infection, mild illness, moderate illness, severe illness, and critical illness.

In total, the researchers analyzed 5,596 patients who were SARS-CoV-2 positive, with 605 patients (10.8%) hospitalized within 14 days of receiving a positive test. Of these, 100 patients (16.5%) were patients with asthma. There were no significant differences between groups hospitalized and not hospitalized due to COVID-19 in patients with asthma and with no asthma.

Among patients with asthma and COVID-19, 28.0% had asymptomatic illness, 19.0% had moderate disease, 33.0% had severe disease, and 20.0% had critical COVID-19, compared with 36.0% of patients without asthma who had asymptomatic illness, 12.0% with moderate disease, 30.0% with severe disease, and 21.0% with critical COVID-19. Dr. Eggert and colleagues performed a univariate analysis, which showed a significant association between asthma and COVID-19 related hospitalization (odds ratio, 1.53; 95% confidence interval, 1.2-1.93; P < .001), but when adjusting for factors such as diabetes, obesity coronary heart disease, and hypertension, they found there was not a significant association between asthma and hospitalization due to COVID-19 (OR, 1.12; 95% CI, 0.86-1.45; P < .40).

In a univariate analysis, asthma was associated with more severe disease in patients hospitalized for COVID-19, but the results were not significant (OR, 1.21; 95% CI, 0.8-1.85; P = .37). When analyzing allergic asthma alone in a univariate analysis, the researchers found a significant association between allergic asthma and lower hospitalization risk, compared with patients who had nonallergic asthma (OR, 0.55; 95% CI, 0.31-0.92; P = .029), and this association remained after they performed a multivariate analysis as well.

“When we stratified by allergic asthma versus nonallergic asthma, we found that having a diagnosis of allergic asthma actually conferred a protective effect, and there was almost half the risk of hospitalization in asthmatics with allergic asthma as compared to others, which we thought was very interesting,” Dr. Eggert said.

“Eosinophil levels during hospitalization, even when adjusted for systemic steroid use – and we followed patients out through September, when dexamethasone was standard of care – also correlated with better outcomes,” she explained. “This is independent of asthmatic status.”

While most commercially insured patients with asthma have good disease control, some patients may not, according to a recent review of U.S. administrative claims data.

The results of the retrospective analysis, presented at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year, showed some patients with asthma had two or more refills for prescribed systemic corticosteroids (SCS) or short-acting beta agonists (SABA) within a period of 12 months.

“Frequent prescription of systemic corticosteroids and short-acting beta agonists is often indicative of poor asthma disease control,” Randall Brown, MD, MPH, pulmonologist and senior director of Global Respiratory Medical Affairs at Teva Pharmaceuticals in West Chester, Penn., said in a presentation at the meeting. “Understanding the extent of systemic steroid and SABA prescriptions among patients with asthma and the distribution of those prescriptions across disease severity can be useful in determining the degree of disease control.”

Global Initiative for Asthma (GINA) guidelines consider factors such as symptom control and risk of exacerbation when determining asthma severity, but uncontrolled asthma can still be difficult to assess. Dr. Brown and colleagues set out to determine the prevalence of uncontrolled asthma for patients in the IBM/Watson MarketScan U.S. claims database as well as the rate of uncontrolled asthma by GINA classification. In total, 597,955 patients who had an asthma diagnosis between 12 months before or up to 3 months after the index data of filling a SABA prescription were included for analysis. Patients were at least 12 years old with commercial insurance for at least 12 months, and had no other respiratory diseases other than asthma during the 12 months prior to the index date and during the study period.

The researchers then measured each patient’s 2018 GINA classification of asthma severity based on the number of SCS and SABA prescription claims made between January and December 2017. Overall, 54.3% patients were GINA Step 1, 14.6% were Step 2, 10.2% were Step 3, 19.8% were Step 4, and 1.1% were Step 5.

Dr. Brown and colleagues found that, regardless of GINA disease severity, 18.8% of patients filled two or more SCS prescriptions in 1 year, 27.4% filled three or more SABA prescriptions in 1 year, and 38.7% filled two or more SCS and/or three or more SABA prescriptions in 1 year. “[A] large proportion of these patients did not meet the GINA goal of disease control,” Dr. Brown said.

The researchers found 13% of patients with uncontrolled asthma categorized as GINA Step 1, 20% of patients categorized as GINA Step 2, 19% of patients who were GINA Step 3, 31% of patients who were GINA Step 4, and 54% of patients categorized as GINA Step 5 filled two or more two or more SCS prescriptions per year.

The proportion of patients with uncontrolled asthma who filled three or more SABA prescriptions per year included 19% in GINA Step 1, 29% in GINA Step 2, 35% in GINA Step 3, 44% in GINA Step 4, and 57% in GINA Step 5 groups. For patients who filled both two or more SCS and/or three or more SABA prescriptions per year, the proportion of patients with uncontrolled asthma by GINA category was 29% in GINA Step 1, 42% in GINA Step 2, 46% in GINA Step 3, 58% in GINA Step 4, and 76% of patients in GINA Step 5.

While “poor control was seen across all of the GINA disease severity classifications, the greatest proportion of uncontrolled disease was seen at the highest disease severity, which was also true when we used a stricter definition of uncontrolled disease,” Dr. Brown said. When the researchers applied stricter criteria for patients categorized as GINA Step 5, 39% of patients filled three or more SCS, 41% filled four or more SABA, and 60% filled three or more SCS and/or four or more SABA prescriptions over 12 months.

Dr. Brown said that the analysis “highlights the need for improved asthma management strategies within each of the asthma GINA classification steps.”

“While this population that was studied may be reflective of the wider insured U.S. population, the proportions of uncontrolled asthma may be even greater in non–commercially insured patients within the United States,” he said. “Updates to GINA guidelines incorporate recent consensus [and] recent scientific information and therapies, but many patients in the U.S. are not meeting the GINA goal of disease control. Newer paradigms for systemic corticosteroid-free asthma control as a target of disease ‘remission’ are becoming more commonplace. Such changes and goals may lead to improved asthma management strategies and advancement in treatment.”

This study was funded in part by Teva Branded Pharmaceutical Products R&D, which also provided funding for medical writing assistance from Ashfield MedComms. The authors report being employees of Teva Pharmaceuticals.

While most commercially insured patients with asthma have good disease control, some patients may not, according to a recent review of U.S. administrative claims data.

The results of the retrospective analysis, presented at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year, showed some patients with asthma had two or more refills for prescribed systemic corticosteroids (SCS) or short-acting beta agonists (SABA) within a period of 12 months.

“Frequent prescription of systemic corticosteroids and short-acting beta agonists is often indicative of poor asthma disease control,” Randall Brown, MD, MPH, pulmonologist and senior director of Global Respiratory Medical Affairs at Teva Pharmaceuticals in West Chester, Penn., said in a presentation at the meeting. “Understanding the extent of systemic steroid and SABA prescriptions among patients with asthma and the distribution of those prescriptions across disease severity can be useful in determining the degree of disease control.”

Global Initiative for Asthma (GINA) guidelines consider factors such as symptom control and risk of exacerbation when determining asthma severity, but uncontrolled asthma can still be difficult to assess. Dr. Brown and colleagues set out to determine the prevalence of uncontrolled asthma for patients in the IBM/Watson MarketScan U.S. claims database as well as the rate of uncontrolled asthma by GINA classification. In total, 597,955 patients who had an asthma diagnosis between 12 months before or up to 3 months after the index data of filling a SABA prescription were included for analysis. Patients were at least 12 years old with commercial insurance for at least 12 months, and had no other respiratory diseases other than asthma during the 12 months prior to the index date and during the study period.

The researchers then measured each patient’s 2018 GINA classification of asthma severity based on the number of SCS and SABA prescription claims made between January and December 2017. Overall, 54.3% patients were GINA Step 1, 14.6% were Step 2, 10.2% were Step 3, 19.8% were Step 4, and 1.1% were Step 5.

Dr. Brown and colleagues found that, regardless of GINA disease severity, 18.8% of patients filled two or more SCS prescriptions in 1 year, 27.4% filled three or more SABA prescriptions in 1 year, and 38.7% filled two or more SCS and/or three or more SABA prescriptions in 1 year. “[A] large proportion of these patients did not meet the GINA goal of disease control,” Dr. Brown said.

The researchers found 13% of patients with uncontrolled asthma categorized as GINA Step 1, 20% of patients categorized as GINA Step 2, 19% of patients who were GINA Step 3, 31% of patients who were GINA Step 4, and 54% of patients categorized as GINA Step 5 filled two or more two or more SCS prescriptions per year.

The proportion of patients with uncontrolled asthma who filled three or more SABA prescriptions per year included 19% in GINA Step 1, 29% in GINA Step 2, 35% in GINA Step 3, 44% in GINA Step 4, and 57% in GINA Step 5 groups. For patients who filled both two or more SCS and/or three or more SABA prescriptions per year, the proportion of patients with uncontrolled asthma by GINA category was 29% in GINA Step 1, 42% in GINA Step 2, 46% in GINA Step 3, 58% in GINA Step 4, and 76% of patients in GINA Step 5.

While “poor control was seen across all of the GINA disease severity classifications, the greatest proportion of uncontrolled disease was seen at the highest disease severity, which was also true when we used a stricter definition of uncontrolled disease,” Dr. Brown said. When the researchers applied stricter criteria for patients categorized as GINA Step 5, 39% of patients filled three or more SCS, 41% filled four or more SABA, and 60% filled three or more SCS and/or four or more SABA prescriptions over 12 months.

Dr. Brown said that the analysis “highlights the need for improved asthma management strategies within each of the asthma GINA classification steps.”

“While this population that was studied may be reflective of the wider insured U.S. population, the proportions of uncontrolled asthma may be even greater in non–commercially insured patients within the United States,” he said. “Updates to GINA guidelines incorporate recent consensus [and] recent scientific information and therapies, but many patients in the U.S. are not meeting the GINA goal of disease control. Newer paradigms for systemic corticosteroid-free asthma control as a target of disease ‘remission’ are becoming more commonplace. Such changes and goals may lead to improved asthma management strategies and advancement in treatment.”

This study was funded in part by Teva Branded Pharmaceutical Products R&D, which also provided funding for medical writing assistance from Ashfield MedComms. The authors report being employees of Teva Pharmaceuticals.

While most commercially insured patients with asthma have good disease control, some patients may not, according to a recent review of U.S. administrative claims data.

The results of the retrospective analysis, presented at the annual meeting of the American Academy of Allergy, Asthma, and Immunology, held virtually this year, showed some patients with asthma had two or more refills for prescribed systemic corticosteroids (SCS) or short-acting beta agonists (SABA) within a period of 12 months.

“Frequent prescription of systemic corticosteroids and short-acting beta agonists is often indicative of poor asthma disease control,” Randall Brown, MD, MPH, pulmonologist and senior director of Global Respiratory Medical Affairs at Teva Pharmaceuticals in West Chester, Penn., said in a presentation at the meeting. “Understanding the extent of systemic steroid and SABA prescriptions among patients with asthma and the distribution of those prescriptions across disease severity can be useful in determining the degree of disease control.”

Global Initiative for Asthma (GINA) guidelines consider factors such as symptom control and risk of exacerbation when determining asthma severity, but uncontrolled asthma can still be difficult to assess. Dr. Brown and colleagues set out to determine the prevalence of uncontrolled asthma for patients in the IBM/Watson MarketScan U.S. claims database as well as the rate of uncontrolled asthma by GINA classification. In total, 597,955 patients who had an asthma diagnosis between 12 months before or up to 3 months after the index data of filling a SABA prescription were included for analysis. Patients were at least 12 years old with commercial insurance for at least 12 months, and had no other respiratory diseases other than asthma during the 12 months prior to the index date and during the study period.

The researchers then measured each patient’s 2018 GINA classification of asthma severity based on the number of SCS and SABA prescription claims made between January and December 2017. Overall, 54.3% patients were GINA Step 1, 14.6% were Step 2, 10.2% were Step 3, 19.8% were Step 4, and 1.1% were Step 5.

Dr. Brown and colleagues found that, regardless of GINA disease severity, 18.8% of patients filled two or more SCS prescriptions in 1 year, 27.4% filled three or more SABA prescriptions in 1 year, and 38.7% filled two or more SCS and/or three or more SABA prescriptions in 1 year. “[A] large proportion of these patients did not meet the GINA goal of disease control,” Dr. Brown said.

The researchers found 13% of patients with uncontrolled asthma categorized as GINA Step 1, 20% of patients categorized as GINA Step 2, 19% of patients who were GINA Step 3, 31% of patients who were GINA Step 4, and 54% of patients categorized as GINA Step 5 filled two or more two or more SCS prescriptions per year.

The proportion of patients with uncontrolled asthma who filled three or more SABA prescriptions per year included 19% in GINA Step 1, 29% in GINA Step 2, 35% in GINA Step 3, 44% in GINA Step 4, and 57% in GINA Step 5 groups. For patients who filled both two or more SCS and/or three or more SABA prescriptions per year, the proportion of patients with uncontrolled asthma by GINA category was 29% in GINA Step 1, 42% in GINA Step 2, 46% in GINA Step 3, 58% in GINA Step 4, and 76% of patients in GINA Step 5.

While “poor control was seen across all of the GINA disease severity classifications, the greatest proportion of uncontrolled disease was seen at the highest disease severity, which was also true when we used a stricter definition of uncontrolled disease,” Dr. Brown said. When the researchers applied stricter criteria for patients categorized as GINA Step 5, 39% of patients filled three or more SCS, 41% filled four or more SABA, and 60% filled three or more SCS and/or four or more SABA prescriptions over 12 months.

Dr. Brown said that the analysis “highlights the need for improved asthma management strategies within each of the asthma GINA classification steps.”

“While this population that was studied may be reflective of the wider insured U.S. population, the proportions of uncontrolled asthma may be even greater in non–commercially insured patients within the United States,” he said. “Updates to GINA guidelines incorporate recent consensus [and] recent scientific information and therapies, but many patients in the U.S. are not meeting the GINA goal of disease control. Newer paradigms for systemic corticosteroid-free asthma control as a target of disease ‘remission’ are becoming more commonplace. Such changes and goals may lead to improved asthma management strategies and advancement in treatment.”

This study was funded in part by Teva Branded Pharmaceutical Products R&D, which also provided funding for medical writing assistance from Ashfield MedComms. The authors report being employees of Teva Pharmaceuticals.

Wearing a mask to protect against transmission of COVID-19 does not decrease oxygen saturation, according to a new study.

Oxygen saturation did not decline in more than 200 mask-wearing individuals attending an asthma and allergy clinic, regardless of the type of mask they were wearing and how long they had been wearing the mask.

The study was presented in a late breaking poster session by Marisa Hodges, MD, University of Michigan, Ann Arbor, at the virtual annual meeting of the American Academy of Allergy, Asthma, and Immunology.

“In patients with or without asthma, wearing a mask does not decrease your oxygen level,” coauthor Alan P. Baptist, MD, MPH, director of the University of Michigan Comprehensive Asthma Program, said in an interview.

“Some of my asthma patients had called me requesting an exemption from wearing a mask because they feared that their oxygen intake may be affected, and that got me thinking,” said Malika Gupta, MD, assistant professor, division of allergy and immunology, University of Michigan, Ann Arbor, and the study’s lead investigator.

“We say masks are safe, but I couldn’t find any data to support that statement, and we wanted to provide them with evidence, so they could feel comfortable about wearing their masks,” Dr. Gupta added.

The study collected 223 surveys from adult and pediatric patients presenting to the University of Michigan Medicine Allergy Clinic between Sept. 10 and Oct. 23, 2020.

The patients were asked whether they had a diagnosis of asthma, their degree of perceived control if they did have asthma, the type of mask they were wearing, and how long they had been wearing it.

Investigators obtained resting pulse oximetry readings to measure oxygen saturation (SpO₂) from all study participants.

Forty percent of the participants were male, 46% reported having asthma, and 27% were age 19 years or younger.

Overall, the mean SpO₂ was 98% (range, 93%-100%) in both asthma and nonasthma groups.

The study also looked at SpO₂ with 3 different types of masks: fabric, surgical, and N95.

The mean SpO₂ for a fabric mask was 98% (119 patients), for a surgical mask it was also 98% (83 patients), and for the N95 mask it was 99% (3 patients).

Similar results were found with duration of mask use, with the mean SpO₂ 98% in those wearing a mask for 1 hour or less and 99% in those wearing a mask for 1 hour or longer.

People with asthma who reported they were well controlled showed similar mean SpO₂ levels (98%) compared with those who reported they were not well controlled (96.5%)

“No effect on oxygen saturation was noted in any patients, whether they had asthma or not, whether it was well controlled or not, and this was also true regardless of what masks they wore and how long they wore the masks for. So our data reinforce that wearing a mask, whether it be a surgical mask, cloth mask, or N95, is completely safe,” Dr. Baptist said.

“We know wearing a mask is an essential step we can all take to reduce the spread of COVID-19, and we hope these data will give peace of mind to individuals who fear that wearing a mask will adversely affect their oxygen levels,” Dr. Gupta added.

Leonard B. Bacharier, MD, professor of pediatrics and director of the Center for Pediatric Asthma, Monroe Carell Jr. Children’s Hospital at Vanderbilt University Medical Center, Nashville, Tenn., agreed with the investigators’ conclusions.

“The authors found no differences in oxygen saturations between asthmatic and nonasthmatic patients, nor was there a difference based upon mask use or type,” Dr. Bacharier, who was not part of the study, said in an interview.

“These findings provide reassurance that patients, including those with stable asthma, do not experience impaired oxygenation while wearing a mask.”

Dr. Hodges, Dr. Baptist, and Dr. Bacharier have disclosed no relevant financial relationships.

This article was updated 3/11/21.

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

Wearing a mask to protect against transmission of COVID-19 does not decrease oxygen saturation, according to a new study.

Oxygen saturation did not decline in more than 200 mask-wearing individuals attending an asthma and allergy clinic, regardless of the type of mask they were wearing and how long they had been wearing the mask.

The study was presented in a late breaking poster session by Marisa Hodges, MD, University of Michigan, Ann Arbor, at the virtual annual meeting of the American Academy of Allergy, Asthma, and Immunology.

“In patients with or without asthma, wearing a mask does not decrease your oxygen level,” coauthor Alan P. Baptist, MD, MPH, director of the University of Michigan Comprehensive Asthma Program, said in an interview.

“Some of my asthma patients had called me requesting an exemption from wearing a mask because they feared that their oxygen intake may be affected, and that got me thinking,” said Malika Gupta, MD, assistant professor, division of allergy and immunology, University of Michigan, Ann Arbor, and the study’s lead investigator.

“We say masks are safe, but I couldn’t find any data to support that statement, and we wanted to provide them with evidence, so they could feel comfortable about wearing their masks,” Dr. Gupta added.

The study collected 223 surveys from adult and pediatric patients presenting to the University of Michigan Medicine Allergy Clinic between Sept. 10 and Oct. 23, 2020.

The patients were asked whether they had a diagnosis of asthma, their degree of perceived control if they did have asthma, the type of mask they were wearing, and how long they had been wearing it.

Investigators obtained resting pulse oximetry readings to measure oxygen saturation (SpO₂) from all study participants.

Forty percent of the participants were male, 46% reported having asthma, and 27% were age 19 years or younger.

Overall, the mean SpO₂ was 98% (range, 93%-100%) in both asthma and nonasthma groups.

The study also looked at SpO₂ with 3 different types of masks: fabric, surgical, and N95.

The mean SpO₂ for a fabric mask was 98% (119 patients), for a surgical mask it was also 98% (83 patients), and for the N95 mask it was 99% (3 patients).

Similar results were found with duration of mask use, with the mean SpO₂ 98% in those wearing a mask for 1 hour or less and 99% in those wearing a mask for 1 hour or longer.

People with asthma who reported they were well controlled showed similar mean SpO₂ levels (98%) compared with those who reported they were not well controlled (96.5%)

“No effect on oxygen saturation was noted in any patients, whether they had asthma or not, whether it was well controlled or not, and this was also true regardless of what masks they wore and how long they wore the masks for. So our data reinforce that wearing a mask, whether it be a surgical mask, cloth mask, or N95, is completely safe,” Dr. Baptist said.

“We know wearing a mask is an essential step we can all take to reduce the spread of COVID-19, and we hope these data will give peace of mind to individuals who fear that wearing a mask will adversely affect their oxygen levels,” Dr. Gupta added.

Leonard B. Bacharier, MD, professor of pediatrics and director of the Center for Pediatric Asthma, Monroe Carell Jr. Children’s Hospital at Vanderbilt University Medical Center, Nashville, Tenn., agreed with the investigators’ conclusions.

“The authors found no differences in oxygen saturations between asthmatic and nonasthmatic patients, nor was there a difference based upon mask use or type,” Dr. Bacharier, who was not part of the study, said in an interview.

“These findings provide reassurance that patients, including those with stable asthma, do not experience impaired oxygenation while wearing a mask.”

Dr. Hodges, Dr. Baptist, and Dr. Bacharier have disclosed no relevant financial relationships.

This article was updated 3/11/21.

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

Wearing a mask to protect against transmission of COVID-19 does not decrease oxygen saturation, according to a new study.

Oxygen saturation did not decline in more than 200 mask-wearing individuals attending an asthma and allergy clinic, regardless of the type of mask they were wearing and how long they had been wearing the mask.

The study was presented in a late breaking poster session by Marisa Hodges, MD, University of Michigan, Ann Arbor, at the virtual annual meeting of the American Academy of Allergy, Asthma, and Immunology.

“In patients with or without asthma, wearing a mask does not decrease your oxygen level,” coauthor Alan P. Baptist, MD, MPH, director of the University of Michigan Comprehensive Asthma Program, said in an interview.

“Some of my asthma patients had called me requesting an exemption from wearing a mask because they feared that their oxygen intake may be affected, and that got me thinking,” said Malika Gupta, MD, assistant professor, division of allergy and immunology, University of Michigan, Ann Arbor, and the study’s lead investigator.

“We say masks are safe, but I couldn’t find any data to support that statement, and we wanted to provide them with evidence, so they could feel comfortable about wearing their masks,” Dr. Gupta added.

The study collected 223 surveys from adult and pediatric patients presenting to the University of Michigan Medicine Allergy Clinic between Sept. 10 and Oct. 23, 2020.

The patients were asked whether they had a diagnosis of asthma, their degree of perceived control if they did have asthma, the type of mask they were wearing, and how long they had been wearing it.

Investigators obtained resting pulse oximetry readings to measure oxygen saturation (SpO₂) from all study participants.

Forty percent of the participants were male, 46% reported having asthma, and 27% were age 19 years or younger.

Overall, the mean SpO₂ was 98% (range, 93%-100%) in both asthma and nonasthma groups.

The study also looked at SpO₂ with 3 different types of masks: fabric, surgical, and N95.

The mean SpO₂ for a fabric mask was 98% (119 patients), for a surgical mask it was also 98% (83 patients), and for the N95 mask it was 99% (3 patients).

Similar results were found with duration of mask use, with the mean SpO₂ 98% in those wearing a mask for 1 hour or less and 99% in those wearing a mask for 1 hour or longer.

People with asthma who reported they were well controlled showed similar mean SpO₂ levels (98%) compared with those who reported they were not well controlled (96.5%)

“No effect on oxygen saturation was noted in any patients, whether they had asthma or not, whether it was well controlled or not, and this was also true regardless of what masks they wore and how long they wore the masks for. So our data reinforce that wearing a mask, whether it be a surgical mask, cloth mask, or N95, is completely safe,” Dr. Baptist said.

“We know wearing a mask is an essential step we can all take to reduce the spread of COVID-19, and we hope these data will give peace of mind to individuals who fear that wearing a mask will adversely affect their oxygen levels,” Dr. Gupta added.

Leonard B. Bacharier, MD, professor of pediatrics and director of the Center for Pediatric Asthma, Monroe Carell Jr. Children’s Hospital at Vanderbilt University Medical Center, Nashville, Tenn., agreed with the investigators’ conclusions.

“The authors found no differences in oxygen saturations between asthmatic and nonasthmatic patients, nor was there a difference based upon mask use or type,” Dr. Bacharier, who was not part of the study, said in an interview.

“These findings provide reassurance that patients, including those with stable asthma, do not experience impaired oxygenation while wearing a mask.”

Dr. Hodges, Dr. Baptist, and Dr. Bacharier have disclosed no relevant financial relationships.

This article was updated 3/11/21.

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

The rate of hospital admissions in the United Kingdom for food-induced anaphylaxis more than tripled over the 20 years from 1998 to 2018, but the case fatality rate fell by more than half, researchers report in BMJ.

“Cow’s milk is increasingly identified as the culprit allergen for fatal food reactions and is now the commonest cause of fatal anaphylaxis in children,” write Alessia Baseggio Conrado, PhD, a biochemist with the National Heart and Lung Institute at Imperial College London, and colleagues. “More education is needed to highlight the specific risks posed by cow’s milk to people who are allergic to increase awareness among food businesses.”

Whereas recognition of the risks posed by nut allergies has increased, people think milk allergy is mild, says senior author Paul. J. Turner, BMBCh, PhD, an allergist/immunologist at Imperial College. “This is often true in very young children, but school-aged children who still have milk allergy tend to have a more allergic profile, often with other allergies, including asthma,” Dr. Turner told this news organization. “Also, milk is very common in our diet, and you don’t need much milk to achieve a decent dose of allergen.”

During the study period, 101,891 people were hospitalized for anaphylaxis; 30,700 cases (30%) were coded as having been triggered by food.

These food-related admissions represent an increase from 1.23 to 4.04 per 100,000 population per year, for an annual increase of 5.7% (95% confidence interval, 5.5-5.9; P < .001), the authors write.

The largest jump occurred among children younger than 15 years, for whom admissions rose from 2.1 to 9.2 per 100,000 population per year, an annual increase of 6.6% (95% CI, 6.3-7.0). The annual increases were 5.9% (95% CI, 5.6-6.2) among persons aged 15 to 59 years and 2.1% (95% CI, 1.8-3.1) among those aged 60 years and older.

The investigators used data from England, Scotland, Wales, and Northern Ireland to track temporal trends and age and sex distributions for hospital admissions for which the primary diagnosis was anaphylaxis attributable to both food and nonfood triggers. These data were compared with nationally reported fatalities.

Over the 20-year period, 152 deaths were attributed to likely food-induced anaphylaxis. During that time, the case fatality rate for confirmed fatal food anaphylaxis fell from 0.7% to 0.19% (rate ratio, 0.931; 95% CI, 0.904-0.959; P < .001) and declined to 0.30% for suspected fatal food anaphylaxis (rate ratio, 0.970; 95% CI, 0.945-0.996; P = .024).

Between 1992 and 2018, at least 46% of all anaphylactic fatalities were deemed to be triggered by peanut or tree nut. Among school-aged children, 26% of anaphylactic fatalities were attributed to cow’s milk.

Not surprisingly, during the study period, there was an increase of 336% in prescriptions for adrenaline autoinjectors. Such prescriptions increased 11% per year.

Global trend

The data extend findings Dr. Turner and colleagues reported for England and Wales in 2014 regarding the entire United Kingdom population and align with epidemiologic trends in hospital admissions for anaphylaxis in the United States and Australia.

The researchers say better recognition and management of anaphylaxis could partly explain the decrease in fatalities, but the rise in hospitalizations remains puzzling. “Whether a true increase in the prevalence of anaphylaxis has occurred (rather than a reduction in the threshold to admit patients presenting with anaphylaxis) is unclear because evidence is lacking for an increase in prevalence of food allergy in the [United Kingdom] (and elsewhere) over the same time period,” they write.

Ronna L. Campbell, MD, PhD, an emergency physician at the Mayo Clinic in Rochester, Minn., has noted similar trends in the United States. “It may be that anaphylaxis recognition and diagnosis have improved, resulting in earlier administration of epinephrine,” Dr. Campbell said in an interview. “So while cases are increasing, earlier recognition and treatment result in decreased fatalities.” She is unaware of any new guidelines recommending increased hospitalization that would explain the puzzling rise in admissions.

According to the study authors, the clinical criteria used to diagnose anaphylaxis in the United Kingdom did not change during the study period. Although national guidance recommending the hospitalization of children younger than 16 who are suspected of having anaphylaxis was introduced in 2011 and may have boosted admissions, the year-on-year rate of increase has persisted since 2014. “Therefore the increase over the past 5 years cannot be attributed to the impact of the guidance,” they write.

The study was funded by grants from the U.K. Medical Research Council and U.K. Food Standards Agency. Two coauthors have disclosed financial relationships with industry outside of the submitted work. Dr. Conrado has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com

The rate of hospital admissions in the United Kingdom for food-induced anaphylaxis more than tripled over the 20 years from 1998 to 2018, but the case fatality rate fell by more than half, researchers report in BMJ.

“Cow’s milk is increasingly identified as the culprit allergen for fatal food reactions and is now the commonest cause of fatal anaphylaxis in children,” write Alessia Baseggio Conrado, PhD, a biochemist with the National Heart and Lung Institute at Imperial College London, and colleagues. “More education is needed to highlight the specific risks posed by cow’s milk to people who are allergic to increase awareness among food businesses.”

Whereas recognition of the risks posed by nut allergies has increased, people think milk allergy is mild, says senior author Paul. J. Turner, BMBCh, PhD, an allergist/immunologist at Imperial College. “This is often true in very young children, but school-aged children who still have milk allergy tend to have a more allergic profile, often with other allergies, including asthma,” Dr. Turner told this news organization. “Also, milk is very common in our diet, and you don’t need much milk to achieve a decent dose of allergen.”

During the study period, 101,891 people were hospitalized for anaphylaxis; 30,700 cases (30%) were coded as having been triggered by food.

These food-related admissions represent an increase from 1.23 to 4.04 per 100,000 population per year, for an annual increase of 5.7% (95% confidence interval, 5.5-5.9; P < .001), the authors write.

The largest jump occurred among children younger than 15 years, for whom admissions rose from 2.1 to 9.2 per 100,000 population per year, an annual increase of 6.6% (95% CI, 6.3-7.0). The annual increases were 5.9% (95% CI, 5.6-6.2) among persons aged 15 to 59 years and 2.1% (95% CI, 1.8-3.1) among those aged 60 years and older.

The investigators used data from England, Scotland, Wales, and Northern Ireland to track temporal trends and age and sex distributions for hospital admissions for which the primary diagnosis was anaphylaxis attributable to both food and nonfood triggers. These data were compared with nationally reported fatalities.

Over the 20-year period, 152 deaths were attributed to likely food-induced anaphylaxis. During that time, the case fatality rate for confirmed fatal food anaphylaxis fell from 0.7% to 0.19% (rate ratio, 0.931; 95% CI, 0.904-0.959; P < .001) and declined to 0.30% for suspected fatal food anaphylaxis (rate ratio, 0.970; 95% CI, 0.945-0.996; P = .024).

Between 1992 and 2018, at least 46% of all anaphylactic fatalities were deemed to be triggered by peanut or tree nut. Among school-aged children, 26% of anaphylactic fatalities were attributed to cow’s milk.

Not surprisingly, during the study period, there was an increase of 336% in prescriptions for adrenaline autoinjectors. Such prescriptions increased 11% per year.

Global trend

The data extend findings Dr. Turner and colleagues reported for England and Wales in 2014 regarding the entire United Kingdom population and align with epidemiologic trends in hospital admissions for anaphylaxis in the United States and Australia.

The researchers say better recognition and management of anaphylaxis could partly explain the decrease in fatalities, but the rise in hospitalizations remains puzzling. “Whether a true increase in the prevalence of anaphylaxis has occurred (rather than a reduction in the threshold to admit patients presenting with anaphylaxis) is unclear because evidence is lacking for an increase in prevalence of food allergy in the [United Kingdom] (and elsewhere) over the same time period,” they write.

Ronna L. Campbell, MD, PhD, an emergency physician at the Mayo Clinic in Rochester, Minn., has noted similar trends in the United States. “It may be that anaphylaxis recognition and diagnosis have improved, resulting in earlier administration of epinephrine,” Dr. Campbell said in an interview. “So while cases are increasing, earlier recognition and treatment result in decreased fatalities.” She is unaware of any new guidelines recommending increased hospitalization that would explain the puzzling rise in admissions.

According to the study authors, the clinical criteria used to diagnose anaphylaxis in the United Kingdom did not change during the study period. Although national guidance recommending the hospitalization of children younger than 16 who are suspected of having anaphylaxis was introduced in 2011 and may have boosted admissions, the year-on-year rate of increase has persisted since 2014. “Therefore the increase over the past 5 years cannot be attributed to the impact of the guidance,” they write.

The study was funded by grants from the U.K. Medical Research Council and U.K. Food Standards Agency. Two coauthors have disclosed financial relationships with industry outside of the submitted work. Dr. Conrado has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com

The rate of hospital admissions in the United Kingdom for food-induced anaphylaxis more than tripled over the 20 years from 1998 to 2018, but the case fatality rate fell by more than half, researchers report in BMJ.

“Cow’s milk is increasingly identified as the culprit allergen for fatal food reactions and is now the commonest cause of fatal anaphylaxis in children,” write Alessia Baseggio Conrado, PhD, a biochemist with the National Heart and Lung Institute at Imperial College London, and colleagues. “More education is needed to highlight the specific risks posed by cow’s milk to people who are allergic to increase awareness among food businesses.”

Whereas recognition of the risks posed by nut allergies has increased, people think milk allergy is mild, says senior author Paul. J. Turner, BMBCh, PhD, an allergist/immunologist at Imperial College. “This is often true in very young children, but school-aged children who still have milk allergy tend to have a more allergic profile, often with other allergies, including asthma,” Dr. Turner told this news organization. “Also, milk is very common in our diet, and you don’t need much milk to achieve a decent dose of allergen.”

During the study period, 101,891 people were hospitalized for anaphylaxis; 30,700 cases (30%) were coded as having been triggered by food.

These food-related admissions represent an increase from 1.23 to 4.04 per 100,000 population per year, for an annual increase of 5.7% (95% confidence interval, 5.5-5.9; P < .001), the authors write.

The largest jump occurred among children younger than 15 years, for whom admissions rose from 2.1 to 9.2 per 100,000 population per year, an annual increase of 6.6% (95% CI, 6.3-7.0). The annual increases were 5.9% (95% CI, 5.6-6.2) among persons aged 15 to 59 years and 2.1% (95% CI, 1.8-3.1) among those aged 60 years and older.

The investigators used data from England, Scotland, Wales, and Northern Ireland to track temporal trends and age and sex distributions for hospital admissions for which the primary diagnosis was anaphylaxis attributable to both food and nonfood triggers. These data were compared with nationally reported fatalities.

Over the 20-year period, 152 deaths were attributed to likely food-induced anaphylaxis. During that time, the case fatality rate for confirmed fatal food anaphylaxis fell from 0.7% to 0.19% (rate ratio, 0.931; 95% CI, 0.904-0.959; P < .001) and declined to 0.30% for suspected fatal food anaphylaxis (rate ratio, 0.970; 95% CI, 0.945-0.996; P = .024).

Between 1992 and 2018, at least 46% of all anaphylactic fatalities were deemed to be triggered by peanut or tree nut. Among school-aged children, 26% of anaphylactic fatalities were attributed to cow’s milk.

Not surprisingly, during the study period, there was an increase of 336% in prescriptions for adrenaline autoinjectors. Such prescriptions increased 11% per year.

Global trend

The data extend findings Dr. Turner and colleagues reported for England and Wales in 2014 regarding the entire United Kingdom population and align with epidemiologic trends in hospital admissions for anaphylaxis in the United States and Australia.

The researchers say better recognition and management of anaphylaxis could partly explain the decrease in fatalities, but the rise in hospitalizations remains puzzling. “Whether a true increase in the prevalence of anaphylaxis has occurred (rather than a reduction in the threshold to admit patients presenting with anaphylaxis) is unclear because evidence is lacking for an increase in prevalence of food allergy in the [United Kingdom] (and elsewhere) over the same time period,” they write.

Ronna L. Campbell, MD, PhD, an emergency physician at the Mayo Clinic in Rochester, Minn., has noted similar trends in the United States. “It may be that anaphylaxis recognition and diagnosis have improved, resulting in earlier administration of epinephrine,” Dr. Campbell said in an interview. “So while cases are increasing, earlier recognition and treatment result in decreased fatalities.” She is unaware of any new guidelines recommending increased hospitalization that would explain the puzzling rise in admissions.

According to the study authors, the clinical criteria used to diagnose anaphylaxis in the United Kingdom did not change during the study period. Although national guidance recommending the hospitalization of children younger than 16 who are suspected of having anaphylaxis was introduced in 2011 and may have boosted admissions, the year-on-year rate of increase has persisted since 2014. “Therefore the increase over the past 5 years cannot be attributed to the impact of the guidance,” they write.

The study was funded by grants from the U.K. Medical Research Council and U.K. Food Standards Agency. Two coauthors have disclosed financial relationships with industry outside of the submitted work. Dr. Conrado has disclosed no relevant financial relationships.

A version of this article first appeared on Medscape.com

Over the past 20 years, patients with asthma and chronic obstructive pulmonary disease (COPD) have seen next to no improvement in problems of delayed care because of cost or unaffordable medications, despite wider insurance coverage since the passage of the Affordable Care Act, a new analysis shows.

The long-view analysis illuminates the ongoing problem for people with these chronic diseases despite health care legislation that was considered historic.

“That long-term scope puts recent improvements in better context – whereas we have made improvements in coverage in recent years due to the Affordable Care Act, the longer-term picture is that people with asthma and COPD are struggling to obtain needed medical care and medications despite a substantial reduction in the uninsurance rate,” said Adam Gaffney, MD, MPH, assistant professor of medicine at Harvard Medical School, Boston who authored the paper with David Himmelstein, MD, professor of public health at City University of New York–Hunter College. The findings were published in Chest.

Researchers examined data from 1997 to 2018 for 76,843 adults with asthma and 30,548 adults with COPD, from the National Health Interview Survey, an annual survey by the Centers for Disease Control that is based on in-person interviews and health questionnaires completed by an adult in each family.
 

Insurance coverage up, patients losing ground

During 1997 and 2018, there was an overall 9.3% decrease in the rate of adults with asthma who were uninsured, a significant improvement (P < .001). Between the pre- and post-ACA years, there was modest improvement in those putting off care because of cost, a drop of 3.8%, or going without prescriptions, a drop of 4.0%. But those improvements didn’t correspond to the 7.2% drop in the uninsured rate after the AC , contributing to the finding that there was no significant improvement over the 20 years.

For adults with COPD, it was a slightly different story. Over those 2 decades, the uninsured rate dropped by 9.5%. But the number of patients foregoing care due to cost actually rose by 3.4%, which wasn’t statistically significant, but the rate of those unable to afford needed medications rose significantly by 7.8%.

Researchers found there was improvement between the pre- and post-ACA years among COPD patients putting off care and going without medications (decreases of 6.9% and 4.5%, respectively). That adhered fairly closely with the improvement in the uninsured rate, which fell by 7.1%. But over the 20-year study period, the percentage of those needing medications they couldn’t afford increased significantly by 7.8%. The rate of those delaying or foregoing care also increased, though this amount was not statistically significant.

After the ACA was created, Blacks and Hispanics with asthma had greater improvement in obtaining insurance, compared with other racial and ethnic groups. But over the 20 years, like all racial and ethnic groups, they saw no statistically significant improvement in rates of “inadequate coverage,” defined in this study as either being uninsured, having to delay care because of cost, or being unable to afford needed medications.

For those with COPD, only Whites had statistically significant improvement in the number of patients with inadequate coverage after the ACA, researchers found.

So despite obtaining insurance, patients lost ground in managing their disease because of the growing cost of care and medication.

“Medication affordability has actually worsened for those with COPD – a worrisome development given that medication nonadherence worsens outcomes for these vulnerable patients,” Dr. Gaffney said. “Policy makers should return to the issue of national health care reform. Both uninsurance and underinsurance undermines pulmonologists’ ability to care for their patients with chronic disease. A health care system without financial barriers, in contrast, might well improve these patients’ outcomes, and advance health equity.”
 

Insurance is no guarantee to access

Daniel Ouellette, MD, FCCP, a pulmonary and critical care specialist at Henry Ford Health System in Detroit, said it’s not surprising that access to care remains a problem despite the Affordable Care Act.

“It covers the hospitalizations and ER visits – patients in this segment of society were getting cared for there anyway,” he said. “And what the ACA didn’t always do was provide adequate prescription coverage or cover these outpatient gaps. So even though the patients have the ACA they still have unaffordable prescriptions, they still can’t buy them, and they still can’t pay for their outpatient clinic if they have a $500 or $1,000 deductible.” These patients also continue to struggle with more fundamental issues that affect access to care, such as lack of transportation and poor health literacy.

At Henry Ford, pharmacists work with patients to identify medications covered by their insurance and work to find discounts and coupons, he said. As for the ACA, “it’s a good first start, but we really need to identify what its limitations are.” Locally driven, less expensive solutions might be a better way forward than costly federal initiatives.

Brandon M. Seay, MD, a pediatric pulmonologist and sleep specialist at Children’s Healthcare of Atlanta, said the findings dovetail with what he has seen in the pediatric population.

“From my experience, the ACA has helped patients get their foot in the door and has helped patients decrease the possibility of serious financial burden in emergency situations, but the ability to afford medications has not changed very much,” he said. When patients struggle with sufficient prescription coverage, he helps patients fight for coverage and connects them with prescription assistance programs such as GoodRx.

“Instead of focusing on the access of insurance to patients, the goal of the system should be to make care as affordable as possible,” Dr. Seay said. “Access does not meet the needs of a patient if they cannot afford what they have access to. Transition to a nationalized health system where there is no question of access could help to drive down prescription drug prices by allowing the government to negotiate with pharmaceutical companies more adequately by removing the ‘middle man’ of the private insurance industry.”

The investigators reported no financial conflicts. Dr. Ouellette and Dr. Seay reported no financial conflicts.

Over the past 20 years, patients with asthma and chronic obstructive pulmonary disease (COPD) have seen next to no improvement in problems of delayed care because of cost or unaffordable medications, despite wider insurance coverage since the passage of the Affordable Care Act, a new analysis shows.

The long-view analysis illuminates the ongoing problem for people with these chronic diseases despite health care legislation that was considered historic.

“That long-term scope puts recent improvements in better context – whereas we have made improvements in coverage in recent years due to the Affordable Care Act, the longer-term picture is that people with asthma and COPD are struggling to obtain needed medical care and medications despite a substantial reduction in the uninsurance rate,” said Adam Gaffney, MD, MPH, assistant professor of medicine at Harvard Medical School, Boston who authored the paper with David Himmelstein, MD, professor of public health at City University of New York–Hunter College. The findings were published in Chest.

Researchers examined data from 1997 to 2018 for 76,843 adults with asthma and 30,548 adults with COPD, from the National Health Interview Survey, an annual survey by the Centers for Disease Control that is based on in-person interviews and health questionnaires completed by an adult in each family.
 

Insurance coverage up, patients losing ground

During 1997 and 2018, there was an overall 9.3% decrease in the rate of adults with asthma who were uninsured, a significant improvement (P < .001). Between the pre- and post-ACA years, there was modest improvement in those putting off care because of cost, a drop of 3.8%, or going without prescriptions, a drop of 4.0%. But those improvements didn’t correspond to the 7.2% drop in the uninsured rate after the AC , contributing to the finding that there was no significant improvement over the 20 years.

For adults with COPD, it was a slightly different story. Over those 2 decades, the uninsured rate dropped by 9.5%. But the number of patients foregoing care due to cost actually rose by 3.4%, which wasn’t statistically significant, but the rate of those unable to afford needed medications rose significantly by 7.8%.

Researchers found there was improvement between the pre- and post-ACA years among COPD patients putting off care and going without medications (decreases of 6.9% and 4.5%, respectively). That adhered fairly closely with the improvement in the uninsured rate, which fell by 7.1%. But over the 20-year study period, the percentage of those needing medications they couldn’t afford increased significantly by 7.8%. The rate of those delaying or foregoing care also increased, though this amount was not statistically significant.

After the ACA was created, Blacks and Hispanics with asthma had greater improvement in obtaining insurance, compared with other racial and ethnic groups. But over the 20 years, like all racial and ethnic groups, they saw no statistically significant improvement in rates of “inadequate coverage,” defined in this study as either being uninsured, having to delay care because of cost, or being unable to afford needed medications.

For those with COPD, only Whites had statistically significant improvement in the number of patients with inadequate coverage after the ACA, researchers found.

So despite obtaining insurance, patients lost ground in managing their disease because of the growing cost of care and medication.

“Medication affordability has actually worsened for those with COPD – a worrisome development given that medication nonadherence worsens outcomes for these vulnerable patients,” Dr. Gaffney said. “Policy makers should return to the issue of national health care reform. Both uninsurance and underinsurance undermines pulmonologists’ ability to care for their patients with chronic disease. A health care system without financial barriers, in contrast, might well improve these patients’ outcomes, and advance health equity.”
 

Insurance is no guarantee to access

Daniel Ouellette, MD, FCCP, a pulmonary and critical care specialist at Henry Ford Health System in Detroit, said it’s not surprising that access to care remains a problem despite the Affordable Care Act.

“It covers the hospitalizations and ER visits – patients in this segment of society were getting cared for there anyway,” he said. “And what the ACA didn’t always do was provide adequate prescription coverage or cover these outpatient gaps. So even though the patients have the ACA they still have unaffordable prescriptions, they still can’t buy them, and they still can’t pay for their outpatient clinic if they have a $500 or $1,000 deductible.” These patients also continue to struggle with more fundamental issues that affect access to care, such as lack of transportation and poor health literacy.

At Henry Ford, pharmacists work with patients to identify medications covered by their insurance and work to find discounts and coupons, he said. As for the ACA, “it’s a good first start, but we really need to identify what its limitations are.” Locally driven, less expensive solutions might be a better way forward than costly federal initiatives.

Brandon M. Seay, MD, a pediatric pulmonologist and sleep specialist at Children’s Healthcare of Atlanta, said the findings dovetail with what he has seen in the pediatric population.

“From my experience, the ACA has helped patients get their foot in the door and has helped patients decrease the possibility of serious financial burden in emergency situations, but the ability to afford medications has not changed very much,” he said. When patients struggle with sufficient prescription coverage, he helps patients fight for coverage and connects them with prescription assistance programs such as GoodRx.

“Instead of focusing on the access of insurance to patients, the goal of the system should be to make care as affordable as possible,” Dr. Seay said. “Access does not meet the needs of a patient if they cannot afford what they have access to. Transition to a nationalized health system where there is no question of access could help to drive down prescription drug prices by allowing the government to negotiate with pharmaceutical companies more adequately by removing the ‘middle man’ of the private insurance industry.”

The investigators reported no financial conflicts. Dr. Ouellette and Dr. Seay reported no financial conflicts.

Over the past 20 years, patients with asthma and chronic obstructive pulmonary disease (COPD) have seen next to no improvement in problems of delayed care because of cost or unaffordable medications, despite wider insurance coverage since the passage of the Affordable Care Act, a new analysis shows.

The long-view analysis illuminates the ongoing problem for people with these chronic diseases despite health care legislation that was considered historic.

“That long-term scope puts recent improvements in better context – whereas we have made improvements in coverage in recent years due to the Affordable Care Act, the longer-term picture is that people with asthma and COPD are struggling to obtain needed medical care and medications despite a substantial reduction in the uninsurance rate,” said Adam Gaffney, MD, MPH, assistant professor of medicine at Harvard Medical School, Boston who authored the paper with David Himmelstein, MD, professor of public health at City University of New York–Hunter College. The findings were published in Chest.

Researchers examined data from 1997 to 2018 for 76,843 adults with asthma and 30,548 adults with COPD, from the National Health Interview Survey, an annual survey by the Centers for Disease Control that is based on in-person interviews and health questionnaires completed by an adult in each family.
 

Insurance coverage up, patients losing ground

During 1997 and 2018, there was an overall 9.3% decrease in the rate of adults with asthma who were uninsured, a significant improvement (P < .001). Between the pre- and post-ACA years, there was modest improvement in those putting off care because of cost, a drop of 3.8%, or going without prescriptions, a drop of 4.0%. But those improvements didn’t correspond to the 7.2% drop in the uninsured rate after the AC , contributing to the finding that there was no significant improvement over the 20 years.

For adults with COPD, it was a slightly different story. Over those 2 decades, the uninsured rate dropped by 9.5%. But the number of patients foregoing care due to cost actually rose by 3.4%, which wasn’t statistically significant, but the rate of those unable to afford needed medications rose significantly by 7.8%.

Researchers found there was improvement between the pre- and post-ACA years among COPD patients putting off care and going without medications (decreases of 6.9% and 4.5%, respectively). That adhered fairly closely with the improvement in the uninsured rate, which fell by 7.1%. But over the 20-year study period, the percentage of those needing medications they couldn’t afford increased significantly by 7.8%. The rate of those delaying or foregoing care also increased, though this amount was not statistically significant.

After the ACA was created, Blacks and Hispanics with asthma had greater improvement in obtaining insurance, compared with other racial and ethnic groups. But over the 20 years, like all racial and ethnic groups, they saw no statistically significant improvement in rates of “inadequate coverage,” defined in this study as either being uninsured, having to delay care because of cost, or being unable to afford needed medications.

For those with COPD, only Whites had statistically significant improvement in the number of patients with inadequate coverage after the ACA, researchers found.

So despite obtaining insurance, patients lost ground in managing their disease because of the growing cost of care and medication.

“Medication affordability has actually worsened for those with COPD – a worrisome development given that medication nonadherence worsens outcomes for these vulnerable patients,” Dr. Gaffney said. “Policy makers should return to the issue of national health care reform. Both uninsurance and underinsurance undermines pulmonologists’ ability to care for their patients with chronic disease. A health care system without financial barriers, in contrast, might well improve these patients’ outcomes, and advance health equity.”
 

Insurance is no guarantee to access

Daniel Ouellette, MD, FCCP, a pulmonary and critical care specialist at Henry Ford Health System in Detroit, said it’s not surprising that access to care remains a problem despite the Affordable Care Act.

“It covers the hospitalizations and ER visits – patients in this segment of society were getting cared for there anyway,” he said. “And what the ACA didn’t always do was provide adequate prescription coverage or cover these outpatient gaps. So even though the patients have the ACA they still have unaffordable prescriptions, they still can’t buy them, and they still can’t pay for their outpatient clinic if they have a $500 or $1,000 deductible.” These patients also continue to struggle with more fundamental issues that affect access to care, such as lack of transportation and poor health literacy.

At Henry Ford, pharmacists work with patients to identify medications covered by their insurance and work to find discounts and coupons, he said. As for the ACA, “it’s a good first start, but we really need to identify what its limitations are.” Locally driven, less expensive solutions might be a better way forward than costly federal initiatives.

Brandon M. Seay, MD, a pediatric pulmonologist and sleep specialist at Children’s Healthcare of Atlanta, said the findings dovetail with what he has seen in the pediatric population.

“From my experience, the ACA has helped patients get their foot in the door and has helped patients decrease the possibility of serious financial burden in emergency situations, but the ability to afford medications has not changed very much,” he said. When patients struggle with sufficient prescription coverage, he helps patients fight for coverage and connects them with prescription assistance programs such as GoodRx.

“Instead of focusing on the access of insurance to patients, the goal of the system should be to make care as affordable as possible,” Dr. Seay said. “Access does not meet the needs of a patient if they cannot afford what they have access to. Transition to a nationalized health system where there is no question of access could help to drive down prescription drug prices by allowing the government to negotiate with pharmaceutical companies more adequately by removing the ‘middle man’ of the private insurance industry.”

The investigators reported no financial conflicts. Dr. Ouellette and Dr. Seay reported no financial conflicts.

Exposure to antibiotics in mid- to late pregnancy was associated with childhood asthma in vaginally born children, in a Danish birth cohort study.

The reason behind the correlation is unclear. Maternal infections, rather than antibiotics, “could explain the observed association,” said study author Cecilie Skaarup Uldbjerg, a researcher in the department of public health at Aarhus University in Denmark.

Still, the “results are in keeping with the hypothesis that effects of antibiotics impact the maternally derived microbiome in vaginally born children and that this may increase the odds of childhood asthma,” Ms. Uldbjerg and coauthors wrote in their study, which was published online Feb. 9 in Archives of Disease in Childhood . “However, this observational study did not address underlying mechanisms, and this interpretation, while plausible, remains speculative.”
 

Antibiotic use in pregnancy likely to continue

Patrick Duff, MD, who was not involved in the research, does not expect the findings will alter clinical practice.

The association was relatively weak, and the study does not account for factors such as antibiotic exposure during early childhood or tobacco smoke in the house, said Dr. Duff, professor of maternal-fetal medicine at University of Florida, Gainesville.

“Although I agree that we should not use antibiotics indiscriminately during pregnancy, we definitely need to treat certain infections,” Dr. Duff said. “Thus we cannot avoid some degree of antibiotic exposure.”

Although prior research has indicated that antibiotic use in pregnancy may increase the risk of asthma in children, results have been inconsistent.

To study whether antibiotic exposure during pregnancy is associated with childhood asthma and whether the timing of antibiotic exposure or mode of delivery influence the relationship, the investigators analyzed data from more than 32,000 children in the Danish National Birth Cohort, which was established in 1996.
 

Children of mothers who took and did not take antibiotics compared

In all, 17% of the children were born to mothers who used antibiotics during pregnancy. Compared with mothers who did not take antibiotics, those who did reported more maternal asthma, smoking during pregnancy, and having overweight or obesity. In addition, they were less likely to have been in their first pregnancy.

During follow-up at age 11 years, 4,238 children (13%) had asthma, including 12.7% of those whose mothers had not been exposed to antibiotics, and 14.6% of those whose mothers had used antibiotics during pregnancy.

In adjusted analyses, children born to mothers who received antibiotics were more likely to have asthma (OR, 1.14).

Antibiotic exposure in the second to third trimester, but not in the first trimester, was associated with asthma. The association was observed in vaginally born children, but not in children born by cesarean section.

The study is limited by its reliance on maternal reporting for data about antibiotics and asthma diagnoses, the authors noted. Mothers completed telephone interviews twice during pregnancy and once at 6 months postpartum. They completed online questionnaires to provide follow-up information at 11 years.
 

Mode of delivery may matter

The researchers said their analysis indicates that mode of delivery may modify the association between antibiotic exposure during pregnancy and childhood asthma.

Fourteen percent of the children in the study were delivered by cesarean section. Further research may clarify the relationship between antibiotics in pregnancy, mode of delivery, and asthma risk, another doctor who was not involved the study added.

“I do not think that the evidence indicates that mode of delivery clearly has an impact,” said Santina J. G. Wheat, MD, MPH, associate professor of family and community medicine at Northwestern University in Chicago, “as the number of cesarean deliveries was not large enough to fully support such a statement.

“It will be interesting to see if an association holds in future studies with increased cesarean deliveries,” Dr. Wheat said.

How and why antibiotics were used may be other important factors to investigate, Dr. Duff suggested.

“The authors did not provide any specific information about which antibiotics were used by the mothers, duration of use, and indication for use. Those are very important confounders,” Dr. Duff said. “Perhaps the key exposure is to a particular maternal infection rather than to the antibiotic per se.”

The Danish National Birth Cohort was established with a grant from the Danish National Research Foundation and support from regional committees and other organizations. Its biobank has been supported by the Novo Nordisk Foundation and the Lundbeck Foundation, and follow-up of mothers and children has been supported by the Danish Medical Research Council, the Lundbeck Foundation, Innovation Fund Denmark, the Nordea Foundation, Aarhus Ideas, a University of Copenhagen strategic grant, and the Danish Council for Independent Research. The study was partially funded by the Health Research Fund of Central Denmark Region, which supported one of the authors. Other authors were supported by the DHB Foundation and the Australian National Health and Medical Research Council. One author is affiliated with Murdoch Children’s Research Institute in Australia, where the Victorian Government’s Operational Infrastructure Support Program supports research.

The authors had no competing interests. Dr. Wheat serves on the editorial advisory board of Family Practice News. Dr. Duff had no relevant financial disclosures.

jremaly@mdedge.com

Exposure to antibiotics in mid- to late pregnancy was associated with childhood asthma in vaginally born children, in a Danish birth cohort study.

The reason behind the correlation is unclear. Maternal infections, rather than antibiotics, “could explain the observed association,” said study author Cecilie Skaarup Uldbjerg, a researcher in the department of public health at Aarhus University in Denmark.

Still, the “results are in keeping with the hypothesis that effects of antibiotics impact the maternally derived microbiome in vaginally born children and that this may increase the odds of childhood asthma,” Ms. Uldbjerg and coauthors wrote in their study, which was published online Feb. 9 in Archives of Disease in Childhood . “However, this observational study did not address underlying mechanisms, and this interpretation, while plausible, remains speculative.”
 

Antibiotic use in pregnancy likely to continue

Patrick Duff, MD, who was not involved in the research, does not expect the findings will alter clinical practice.

The association was relatively weak, and the study does not account for factors such as antibiotic exposure during early childhood or tobacco smoke in the house, said Dr. Duff, professor of maternal-fetal medicine at University of Florida, Gainesville.

“Although I agree that we should not use antibiotics indiscriminately during pregnancy, we definitely need to treat certain infections,” Dr. Duff said. “Thus we cannot avoid some degree of antibiotic exposure.”

Although prior research has indicated that antibiotic use in pregnancy may increase the risk of asthma in children, results have been inconsistent.

To study whether antibiotic exposure during pregnancy is associated with childhood asthma and whether the timing of antibiotic exposure or mode of delivery influence the relationship, the investigators analyzed data from more than 32,000 children in the Danish National Birth Cohort, which was established in 1996.
 

Children of mothers who took and did not take antibiotics compared

In all, 17% of the children were born to mothers who used antibiotics during pregnancy. Compared with mothers who did not take antibiotics, those who did reported more maternal asthma, smoking during pregnancy, and having overweight or obesity. In addition, they were less likely to have been in their first pregnancy.

During follow-up at age 11 years, 4,238 children (13%) had asthma, including 12.7% of those whose mothers had not been exposed to antibiotics, and 14.6% of those whose mothers had used antibiotics during pregnancy.

In adjusted analyses, children born to mothers who received antibiotics were more likely to have asthma (OR, 1.14).

Antibiotic exposure in the second to third trimester, but not in the first trimester, was associated with asthma. The association was observed in vaginally born children, but not in children born by cesarean section.

The study is limited by its reliance on maternal reporting for data about antibiotics and asthma diagnoses, the authors noted. Mothers completed telephone interviews twice during pregnancy and once at 6 months postpartum. They completed online questionnaires to provide follow-up information at 11 years.
 

Mode of delivery may matter

The researchers said their analysis indicates that mode of delivery may modify the association between antibiotic exposure during pregnancy and childhood asthma.

Fourteen percent of the children in the study were delivered by cesarean section. Further research may clarify the relationship between antibiotics in pregnancy, mode of delivery, and asthma risk, another doctor who was not involved the study added.

“I do not think that the evidence indicates that mode of delivery clearly has an impact,” said Santina J. G. Wheat, MD, MPH, associate professor of family and community medicine at Northwestern University in Chicago, “as the number of cesarean deliveries was not large enough to fully support such a statement.

“It will be interesting to see if an association holds in future studies with increased cesarean deliveries,” Dr. Wheat said.

How and why antibiotics were used may be other important factors to investigate, Dr. Duff suggested.

“The authors did not provide any specific information about which antibiotics were used by the mothers, duration of use, and indication for use. Those are very important confounders,” Dr. Duff said. “Perhaps the key exposure is to a particular maternal infection rather than to the antibiotic per se.”

The Danish National Birth Cohort was established with a grant from the Danish National Research Foundation and support from regional committees and other organizations. Its biobank has been supported by the Novo Nordisk Foundation and the Lundbeck Foundation, and follow-up of mothers and children has been supported by the Danish Medical Research Council, the Lundbeck Foundation, Innovation Fund Denmark, the Nordea Foundation, Aarhus Ideas, a University of Copenhagen strategic grant, and the Danish Council for Independent Research. The study was partially funded by the Health Research Fund of Central Denmark Region, which supported one of the authors. Other authors were supported by the DHB Foundation and the Australian National Health and Medical Research Council. One author is affiliated with Murdoch Children’s Research Institute in Australia, where the Victorian Government’s Operational Infrastructure Support Program supports research.

The authors had no competing interests. Dr. Wheat serves on the editorial advisory board of Family Practice News. Dr. Duff had no relevant financial disclosures.

jremaly@mdedge.com

Exposure to antibiotics in mid- to late pregnancy was associated with childhood asthma in vaginally born children, in a Danish birth cohort study.

The reason behind the correlation is unclear. Maternal infections, rather than antibiotics, “could explain the observed association,” said study author Cecilie Skaarup Uldbjerg, a researcher in the department of public health at Aarhus University in Denmark.

Still, the “results are in keeping with the hypothesis that effects of antibiotics impact the maternally derived microbiome in vaginally born children and that this may increase the odds of childhood asthma,” Ms. Uldbjerg and coauthors wrote in their study, which was published online Feb. 9 in Archives of Disease in Childhood . “However, this observational study did not address underlying mechanisms, and this interpretation, while plausible, remains speculative.”
 

Antibiotic use in pregnancy likely to continue

Patrick Duff, MD, who was not involved in the research, does not expect the findings will alter clinical practice.

The association was relatively weak, and the study does not account for factors such as antibiotic exposure during early childhood or tobacco smoke in the house, said Dr. Duff, professor of maternal-fetal medicine at University of Florida, Gainesville.

“Although I agree that we should not use antibiotics indiscriminately during pregnancy, we definitely need to treat certain infections,” Dr. Duff said. “Thus we cannot avoid some degree of antibiotic exposure.”

Although prior research has indicated that antibiotic use in pregnancy may increase the risk of asthma in children, results have been inconsistent.

To study whether antibiotic exposure during pregnancy is associated with childhood asthma and whether the timing of antibiotic exposure or mode of delivery influence the relationship, the investigators analyzed data from more than 32,000 children in the Danish National Birth Cohort, which was established in 1996.
 

Children of mothers who took and did not take antibiotics compared

In all, 17% of the children were born to mothers who used antibiotics during pregnancy. Compared with mothers who did not take antibiotics, those who did reported more maternal asthma, smoking during pregnancy, and having overweight or obesity. In addition, they were less likely to have been in their first pregnancy.

During follow-up at age 11 years, 4,238 children (13%) had asthma, including 12.7% of those whose mothers had not been exposed to antibiotics, and 14.6% of those whose mothers had used antibiotics during pregnancy.

In adjusted analyses, children born to mothers who received antibiotics were more likely to have asthma (OR, 1.14).

Antibiotic exposure in the second to third trimester, but not in the first trimester, was associated with asthma. The association was observed in vaginally born children, but not in children born by cesarean section.

The study is limited by its reliance on maternal reporting for data about antibiotics and asthma diagnoses, the authors noted. Mothers completed telephone interviews twice during pregnancy and once at 6 months postpartum. They completed online questionnaires to provide follow-up information at 11 years.
 

Mode of delivery may matter

The researchers said their analysis indicates that mode of delivery may modify the association between antibiotic exposure during pregnancy and childhood asthma.

Fourteen percent of the children in the study were delivered by cesarean section. Further research may clarify the relationship between antibiotics in pregnancy, mode of delivery, and asthma risk, another doctor who was not involved the study added.

“I do not think that the evidence indicates that mode of delivery clearly has an impact,” said Santina J. G. Wheat, MD, MPH, associate professor of family and community medicine at Northwestern University in Chicago, “as the number of cesarean deliveries was not large enough to fully support such a statement.

“It will be interesting to see if an association holds in future studies with increased cesarean deliveries,” Dr. Wheat said.

How and why antibiotics were used may be other important factors to investigate, Dr. Duff suggested.

“The authors did not provide any specific information about which antibiotics were used by the mothers, duration of use, and indication for use. Those are very important confounders,” Dr. Duff said. “Perhaps the key exposure is to a particular maternal infection rather than to the antibiotic per se.”

The Danish National Birth Cohort was established with a grant from the Danish National Research Foundation and support from regional committees and other organizations. Its biobank has been supported by the Novo Nordisk Foundation and the Lundbeck Foundation, and follow-up of mothers and children has been supported by the Danish Medical Research Council, the Lundbeck Foundation, Innovation Fund Denmark, the Nordea Foundation, Aarhus Ideas, a University of Copenhagen strategic grant, and the Danish Council for Independent Research. The study was partially funded by the Health Research Fund of Central Denmark Region, which supported one of the authors. Other authors were supported by the DHB Foundation and the Australian National Health and Medical Research Council. One author is affiliated with Murdoch Children’s Research Institute in Australia, where the Victorian Government’s Operational Infrastructure Support Program supports research.

The authors had no competing interests. Dr. Wheat serves on the editorial advisory board of Family Practice News. Dr. Duff had no relevant financial disclosures.

jremaly@mdedge.com

Patients with asthma–chronic obstructive pulmonary disease overlap (ACO) experienced a higher burden of disease than patients with either asthma or COPD alone, a recent study has found.

Approximately 20% of chronic obstructive airway disease cases are ACO, but data on these patients are limited, as they are often excluded from clinical trials, wrote Sarah A. Hiles, MD, of the University of Newcastle (Australia) and colleagues.

“Comparing the burden of eosinophilic ACO, eosinophilic severe asthma, and eosinophilic COPD may also help contextualize findings from phenotype-targeted treatments in different diagnostic groups, such as the limited success of anti-IL [interleukin]–5 monoclonal antibodies as therapy in eosinophilic COPD,” they said.

In a cross-sectional, observational study published in Respirology the researchers recruited patients aged 18 years and older with a confirmed diagnosis of COPD only (153) severe asthma only (64), or ACO (106). Patients were assessed for demographic and clinical factors including health-related quality of life, past-year exacerbation, and other indicators of disease burden. In addition, patients were identified as having eosinophilic airway disease based on a blood eosinophil count of at least 0.3x109/L.

Overall, eosinophilic airway disease was present in 41% of the patients; 55%, 44%, and 29% for those with ACO, severe asthma, and COPD, respectively. Reports of poor health-related quality of life and past-year exacerbations were similar for eosinophilic patients across all three conditions.

However, patients with eosinophilic ACO experienced significantly more past-year exacerbations, notably those requiring oral corticosteroids, compared with patients with asthma alone. In addition, the cumulative number of past-year exacerbations in patient with eosinophilic disease was 164 in those with ACO, compared with severe asthma alone (44) and COPD alone (59).

Patients with ACO also had significantly higher disease burden based on the St. George’s Respiratory Questionnaire (SGRQ), which assessed functional limitation. “For 100 patients, the cumulative SGRQ score attributable to eosinophilic airways disease in ACO was 2,872.8, which was higher than in severe asthma (1,942.5) or COPD (1,638.1),” the researchers said.

The study was limited by several factors including the cross-sectional design and use of a single measurement to classify eosinophilia, the researchers noted. “The non-eosinophilic group likely included a mix of patients with treated eosinophilia and patients without eosinophilia, regardless of treatment, which is a limitation to consider when interpreting the disease burden estimates in this group,” they added.

However, the results add to the understanding of blood eosinophils in airway disease and the study “supports eosinophilia as a phenotype that spans across disease labels of severe asthma and COPD, and their overlap,” they concluded.

The study was supported by AstraZeneca; lead author Dr. Hiles received a salary through a grant from AstraZeneca to the University of Newcastle while conducting the study. Other coauthors disclosed relationships with companies including AstraZeneca, GlaxoSmithKline, Menarini, and Novartis.

Patients with asthma–chronic obstructive pulmonary disease overlap (ACO) experienced a higher burden of disease than patients with either asthma or COPD alone, a recent study has found.

Approximately 20% of chronic obstructive airway disease cases are ACO, but data on these patients are limited, as they are often excluded from clinical trials, wrote Sarah A. Hiles, MD, of the University of Newcastle (Australia) and colleagues.

“Comparing the burden of eosinophilic ACO, eosinophilic severe asthma, and eosinophilic COPD may also help contextualize findings from phenotype-targeted treatments in different diagnostic groups, such as the limited success of anti-IL [interleukin]–5 monoclonal antibodies as therapy in eosinophilic COPD,” they said.

In a cross-sectional, observational study published in Respirology the researchers recruited patients aged 18 years and older with a confirmed diagnosis of COPD only (153) severe asthma only (64), or ACO (106). Patients were assessed for demographic and clinical factors including health-related quality of life, past-year exacerbation, and other indicators of disease burden. In addition, patients were identified as having eosinophilic airway disease based on a blood eosinophil count of at least 0.3x109/L.

Overall, eosinophilic airway disease was present in 41% of the patients; 55%, 44%, and 29% for those with ACO, severe asthma, and COPD, respectively. Reports of poor health-related quality of life and past-year exacerbations were similar for eosinophilic patients across all three conditions.

However, patients with eosinophilic ACO experienced significantly more past-year exacerbations, notably those requiring oral corticosteroids, compared with patients with asthma alone. In addition, the cumulative number of past-year exacerbations in patient with eosinophilic disease was 164 in those with ACO, compared with severe asthma alone (44) and COPD alone (59).

Patients with ACO also had significantly higher disease burden based on the St. George’s Respiratory Questionnaire (SGRQ), which assessed functional limitation. “For 100 patients, the cumulative SGRQ score attributable to eosinophilic airways disease in ACO was 2,872.8, which was higher than in severe asthma (1,942.5) or COPD (1,638.1),” the researchers said.

The study was limited by several factors including the cross-sectional design and use of a single measurement to classify eosinophilia, the researchers noted. “The non-eosinophilic group likely included a mix of patients with treated eosinophilia and patients without eosinophilia, regardless of treatment, which is a limitation to consider when interpreting the disease burden estimates in this group,” they added.

However, the results add to the understanding of blood eosinophils in airway disease and the study “supports eosinophilia as a phenotype that spans across disease labels of severe asthma and COPD, and their overlap,” they concluded.

The study was supported by AstraZeneca; lead author Dr. Hiles received a salary through a grant from AstraZeneca to the University of Newcastle while conducting the study. Other coauthors disclosed relationships with companies including AstraZeneca, GlaxoSmithKline, Menarini, and Novartis.

Patients with asthma–chronic obstructive pulmonary disease overlap (ACO) experienced a higher burden of disease than patients with either asthma or COPD alone, a recent study has found.

Approximately 20% of chronic obstructive airway disease cases are ACO, but data on these patients are limited, as they are often excluded from clinical trials, wrote Sarah A. Hiles, MD, of the University of Newcastle (Australia) and colleagues.

“Comparing the burden of eosinophilic ACO, eosinophilic severe asthma, and eosinophilic COPD may also help contextualize findings from phenotype-targeted treatments in different diagnostic groups, such as the limited success of anti-IL [interleukin]–5 monoclonal antibodies as therapy in eosinophilic COPD,” they said.

In a cross-sectional, observational study published in Respirology the researchers recruited patients aged 18 years and older with a confirmed diagnosis of COPD only (153) severe asthma only (64), or ACO (106). Patients were assessed for demographic and clinical factors including health-related quality of life, past-year exacerbation, and other indicators of disease burden. In addition, patients were identified as having eosinophilic airway disease based on a blood eosinophil count of at least 0.3x109/L.

Overall, eosinophilic airway disease was present in 41% of the patients; 55%, 44%, and 29% for those with ACO, severe asthma, and COPD, respectively. Reports of poor health-related quality of life and past-year exacerbations were similar for eosinophilic patients across all three conditions.

However, patients with eosinophilic ACO experienced significantly more past-year exacerbations, notably those requiring oral corticosteroids, compared with patients with asthma alone. In addition, the cumulative number of past-year exacerbations in patient with eosinophilic disease was 164 in those with ACO, compared with severe asthma alone (44) and COPD alone (59).

Patients with ACO also had significantly higher disease burden based on the St. George’s Respiratory Questionnaire (SGRQ), which assessed functional limitation. “For 100 patients, the cumulative SGRQ score attributable to eosinophilic airways disease in ACO was 2,872.8, which was higher than in severe asthma (1,942.5) or COPD (1,638.1),” the researchers said.

The study was limited by several factors including the cross-sectional design and use of a single measurement to classify eosinophilia, the researchers noted. “The non-eosinophilic group likely included a mix of patients with treated eosinophilia and patients without eosinophilia, regardless of treatment, which is a limitation to consider when interpreting the disease burden estimates in this group,” they added.

However, the results add to the understanding of blood eosinophils in airway disease and the study “supports eosinophilia as a phenotype that spans across disease labels of severe asthma and COPD, and their overlap,” they concluded.

The study was supported by AstraZeneca; lead author Dr. Hiles received a salary through a grant from AstraZeneca to the University of Newcastle while conducting the study. Other coauthors disclosed relationships with companies including AstraZeneca, GlaxoSmithKline, Menarini, and Novartis.