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Cystic fibrosis: Advances, ongoing challenges
After Rena Barrow-Wells, an African American mother, fought mightily to prevent a repeat of her experience of two decades earlier when her first child’s cystic fibrosis (CF) took 4 years to diagnose, her story became the subject of a New York Times feature covering disparities in diagnostic CF screening. The article highlighted not only her struggles, but also the utter transformation of the CF landscape since the introduction of small molecule mutation-specific drugs. These drugs restore function to defective CF transmembrane conductance regulator (CFTR) proteins. By the time Ms. Barrow-Wells’ young son was treated, lung and pancreatic scarring were already significant. So when the 39-mutation variant screening test available in Ms. Barrow-Wells’ Lawrenceville, Georgia, clinic turned out negative for CF, her pediatrician told her to stop worrying despite her new son’s inherent genetic risk, telltale salty skin, foul-smelling diapers, and her pleas to test for sweat chloride. It still took 3 months for a confirmed diagnosis and the initiation of treatment.
Current genetic tests, based largely on older clinical trials that enrolled mostly white children, are highly accurate for identifying CF in white babies (95%), but often fail to identify substantial percentages of mutations originating in Africa, Asia, and Latin America. They miss CF in Asian (44%), Black (22%), and Hispanic, Native American and Alaskan Native babies (14%), the Times article stated. In the United States, the number of CF variants tested for falls into a wide range: from the one variant found mostly in White populations in Mississippi (with a 38% Black populace) to 689 variants in Wisconsin.
Not too far back, CF was thought of as an inherited childhood disease leading often to childhood or adolescent mortality.
Today’s CF challenges
Beyond refinements in screening instruments and policies that broaden access leading to the earliest possible diagnoses, ongoing research needs include finding treatments for other variants, and caring for adult populations living with treated CF and the disease’s multisystem manifestations. “As people with CF live longer, we need to be very focused on optimized adult medical care for this population,” Marc A. Sala, MD, assistant professor of medicine, Adult CF Program, Northwestern University Feinberg School of Medicine, Chicago, said in an interview. “For example, we need higher vigilance for liver, microvascular, coronary artery disease, and various cancer screenings. We do not know exactly how these will manifest differently from the way they do in non-CF populations, so this is where more work needs to be done.”
Emphasis on monitoring
The authors of “Future therapies for cystic fibrosis” (Allen et al. Nature Communications, 2023 Feb 8), after citing the ongoing transformative change for people with CF since the introduction of CFTR drugs, gave voice to important cautions. “Disease will progress, albeit more slowly, and will be more challenging to monitor. Effective CFTR modulators will likely slow or, at best, halt disease progression, but will not reverse a disease that has already become fixed.” They cited pancreatic destruction in the majority, bronchiectasis, and absence of the vas deferens, with still recurring (although less frequently) pulmonary exacerbations along with chronic infections and persistent airway inflammation. “It is essential that we do not become complacent about disease progression in this population,” the researchers stated. They cautioned also that effective surveillance for infection is critical in asymptomatic patients, emphasizing that it underpins the management of young healthy children with CF who demonstrate disease progression despite a lack of symptoms.
Among the ~90% for whom Trikafta is suitable and approved (those with least one copy of F508del or specific other responsive mutations), improvements include increased percent predicted FEV1 by 10%-15% or more, decreased exacerbations, and improved quality of life,” Dr. Sala said. “Subsequent ‘real world’ experience shows dramatic reductions in sputum production and decreased frequency of lung transplant.”
Mutation agnostic therapy
Unfortunately, CF mutants, outside the population eligible for Trikafta, are prodigious in number and do not fall into just a few major groups. “Furthermore, although CF is a monogenic disease, it has variable phenotypes even for two individuals with the same mutations,” Dr. Sala said. “Current CFTR modulators act on the dysfunctional CFTR protein (either as channel gating potentiators or molecular chaperones to improve misfolding). That leaves about 10% of the CF population, those with little to no protein production (such as in nonsense mutations) ineligible for treatment with CFTR modulators. “The ideal for efficacy and equity, given that some CFTR mutations only exist in a handful of people, would be to develop a ‘mutation agnostic’ strategy — such as with mRNA or gene delivery. Here you could imagine that regardless of the type of mutation, a patient would then be able to receive the technology to increase CFTR channel function,” Dr. Sala said. Many modifiable factors, including host immunity and non-CFTR genes that impact CFTR indirectly, may underlie the fact that one person has a worse trajectory than another. “New therapies may also be found in this area of research,” Dr. Sala said.
Strategies in testing phases
“For patients with class I (nonsense) mutations there is hope that small molecules will be identified that can facilitate premature truncation codon (PTC) read-through and/or impede mRNA decay allowing for clinically relevant levels of functional CFTR,” the researchers noted. While the most extensively developed, ataluren, an oxadiazole, failed in phase 3 trials after initial promise, other ribosomal read-through drugs are in preclinical and early phase clinical trials. Also, early encouraging results support an alternative strategy, engineered transfer RNAs (tRNAs) that introduce an amino acid to an elongating peptide in place of the termination codon.
While these will address specific mutations, DNA or mRNA replacement strategies would be “mutation agnostic,” the researchers stated. The major challenge: delivery to the respiratory epithelium. Approaches currently in early testing include an inhaled aerosolized, lipid-based nanoparticle carrier for mRNA delivery, viral and non-viral DNA transfer, lipid-mediated CFTR gene transfer, pseudotyped lentiviral vector and adeno-associated vector transfer of CFTR DNA.
Adult CF care
“Adult CF care in general is a completely new frontier,” Meilinh Thi, DO, director of the adult cystic fibrosis program and assistant professor at University of Texas Health at San Antonio, said in an interview. “It’s fairly new to have separate pediatric and adult CF centers. There’s been a shift,” she said. “We’re encountering diseases in CF that we have not in the past had to deal with: diabetes that has features of both type 1 and type 2, increased colon cancer risk, bone disease, and mental health issues. Also, while pregnancy was previously discouraged for women with CF because of lung disease, now many are giving birth without complications and living normal lives,” Dr. Thi said. 
“We do encourage our patients to talk to us before becoming pregnant so we can discuss the risk of passing on the gene. And, we do encourage their significant others to get testing. Some patients and their others, however, do decline to get tested,” she added.
The lifetime health issues conferred by CF, Dr. Thi noted, include lung disease with chronic inflammation, infection, respiratory failure (still the most common cause of death), gastrointestinal disorders (including of the pancreas) , colon obstruction and colon cancer, sinus disease, and reproductive system effects. Their permanence, she said, depends on how far their disease has progressed. “So the earlier you can provide these newer therapies — the modulators, for example, or the gene therapy whenever that comes out, then the less damage these organ systems will have, and the patients, we hope, will then do better.”
After Rena Barrow-Wells, an African American mother, fought mightily to prevent a repeat of her experience of two decades earlier when her first child’s cystic fibrosis (CF) took 4 years to diagnose, her story became the subject of a New York Times feature covering disparities in diagnostic CF screening. The article highlighted not only her struggles, but also the utter transformation of the CF landscape since the introduction of small molecule mutation-specific drugs. These drugs restore function to defective CF transmembrane conductance regulator (CFTR) proteins. By the time Ms. Barrow-Wells’ young son was treated, lung and pancreatic scarring were already significant. So when the 39-mutation variant screening test available in Ms. Barrow-Wells’ Lawrenceville, Georgia, clinic turned out negative for CF, her pediatrician told her to stop worrying despite her new son’s inherent genetic risk, telltale salty skin, foul-smelling diapers, and her pleas to test for sweat chloride. It still took 3 months for a confirmed diagnosis and the initiation of treatment.
Current genetic tests, based largely on older clinical trials that enrolled mostly white children, are highly accurate for identifying CF in white babies (95%), but often fail to identify substantial percentages of mutations originating in Africa, Asia, and Latin America. They miss CF in Asian (44%), Black (22%), and Hispanic, Native American and Alaskan Native babies (14%), the Times article stated. In the United States, the number of CF variants tested for falls into a wide range: from the one variant found mostly in White populations in Mississippi (with a 38% Black populace) to 689 variants in Wisconsin.
Not too far back, CF was thought of as an inherited childhood disease leading often to childhood or adolescent mortality.
Today’s CF challenges
Beyond refinements in screening instruments and policies that broaden access leading to the earliest possible diagnoses, ongoing research needs include finding treatments for other variants, and caring for adult populations living with treated CF and the disease’s multisystem manifestations. “As people with CF live longer, we need to be very focused on optimized adult medical care for this population,” Marc A. Sala, MD, assistant professor of medicine, Adult CF Program, Northwestern University Feinberg School of Medicine, Chicago, said in an interview. “For example, we need higher vigilance for liver, microvascular, coronary artery disease, and various cancer screenings. We do not know exactly how these will manifest differently from the way they do in non-CF populations, so this is where more work needs to be done.”
Emphasis on monitoring
The authors of “Future therapies for cystic fibrosis” (Allen et al. Nature Communications, 2023 Feb 8), after citing the ongoing transformative change for people with CF since the introduction of CFTR drugs, gave voice to important cautions. “Disease will progress, albeit more slowly, and will be more challenging to monitor. Effective CFTR modulators will likely slow or, at best, halt disease progression, but will not reverse a disease that has already become fixed.” They cited pancreatic destruction in the majority, bronchiectasis, and absence of the vas deferens, with still recurring (although less frequently) pulmonary exacerbations along with chronic infections and persistent airway inflammation. “It is essential that we do not become complacent about disease progression in this population,” the researchers stated. They cautioned also that effective surveillance for infection is critical in asymptomatic patients, emphasizing that it underpins the management of young healthy children with CF who demonstrate disease progression despite a lack of symptoms.
Among the ~90% for whom Trikafta is suitable and approved (those with least one copy of F508del or specific other responsive mutations), improvements include increased percent predicted FEV1 by 10%-15% or more, decreased exacerbations, and improved quality of life,” Dr. Sala said. “Subsequent ‘real world’ experience shows dramatic reductions in sputum production and decreased frequency of lung transplant.”
Mutation agnostic therapy
Unfortunately, CF mutants, outside the population eligible for Trikafta, are prodigious in number and do not fall into just a few major groups. “Furthermore, although CF is a monogenic disease, it has variable phenotypes even for two individuals with the same mutations,” Dr. Sala said. “Current CFTR modulators act on the dysfunctional CFTR protein (either as channel gating potentiators or molecular chaperones to improve misfolding). That leaves about 10% of the CF population, those with little to no protein production (such as in nonsense mutations) ineligible for treatment with CFTR modulators. “The ideal for efficacy and equity, given that some CFTR mutations only exist in a handful of people, would be to develop a ‘mutation agnostic’ strategy — such as with mRNA or gene delivery. Here you could imagine that regardless of the type of mutation, a patient would then be able to receive the technology to increase CFTR channel function,” Dr. Sala said. Many modifiable factors, including host immunity and non-CFTR genes that impact CFTR indirectly, may underlie the fact that one person has a worse trajectory than another. “New therapies may also be found in this area of research,” Dr. Sala said.
Strategies in testing phases
“For patients with class I (nonsense) mutations there is hope that small molecules will be identified that can facilitate premature truncation codon (PTC) read-through and/or impede mRNA decay allowing for clinically relevant levels of functional CFTR,” the researchers noted. While the most extensively developed, ataluren, an oxadiazole, failed in phase 3 trials after initial promise, other ribosomal read-through drugs are in preclinical and early phase clinical trials. Also, early encouraging results support an alternative strategy, engineered transfer RNAs (tRNAs) that introduce an amino acid to an elongating peptide in place of the termination codon.
While these will address specific mutations, DNA or mRNA replacement strategies would be “mutation agnostic,” the researchers stated. The major challenge: delivery to the respiratory epithelium. Approaches currently in early testing include an inhaled aerosolized, lipid-based nanoparticle carrier for mRNA delivery, viral and non-viral DNA transfer, lipid-mediated CFTR gene transfer, pseudotyped lentiviral vector and adeno-associated vector transfer of CFTR DNA.
Adult CF care
“Adult CF care in general is a completely new frontier,” Meilinh Thi, DO, director of the adult cystic fibrosis program and assistant professor at University of Texas Health at San Antonio, said in an interview. “It’s fairly new to have separate pediatric and adult CF centers. There’s been a shift,” she said. “We’re encountering diseases in CF that we have not in the past had to deal with: diabetes that has features of both type 1 and type 2, increased colon cancer risk, bone disease, and mental health issues. Also, while pregnancy was previously discouraged for women with CF because of lung disease, now many are giving birth without complications and living normal lives,” Dr. Thi said.
“We do encourage our patients to talk to us before becoming pregnant so we can discuss the risk of passing on the gene. And, we do encourage their significant others to get testing. Some patients and their others, however, do decline to get tested,” she added.
The lifetime health issues conferred by CF, Dr. Thi noted, include lung disease with chronic inflammation, infection, respiratory failure (still the most common cause of death), gastrointestinal disorders (including of the pancreas) , colon obstruction and colon cancer, sinus disease, and reproductive system effects. Their permanence, she said, depends on how far their disease has progressed. “So the earlier you can provide these newer therapies — the modulators, for example, or the gene therapy whenever that comes out, then the less damage these organ systems will have, and the patients, we hope, will then do better.”
After Rena Barrow-Wells, an African American mother, fought mightily to prevent a repeat of her experience of two decades earlier when her first child’s cystic fibrosis (CF) took 4 years to diagnose, her story became the subject of a New York Times feature covering disparities in diagnostic CF screening. The article highlighted not only her struggles, but also the utter transformation of the CF landscape since the introduction of small molecule mutation-specific drugs. These drugs restore function to defective CF transmembrane conductance regulator (CFTR) proteins. By the time Ms. Barrow-Wells’ young son was treated, lung and pancreatic scarring were already significant. So when the 39-mutation variant screening test available in Ms. Barrow-Wells’ Lawrenceville, Georgia, clinic turned out negative for CF, her pediatrician told her to stop worrying despite her new son’s inherent genetic risk, telltale salty skin, foul-smelling diapers, and her pleas to test for sweat chloride. It still took 3 months for a confirmed diagnosis and the initiation of treatment.
Current genetic tests, based largely on older clinical trials that enrolled mostly white children, are highly accurate for identifying CF in white babies (95%), but often fail to identify substantial percentages of mutations originating in Africa, Asia, and Latin America. They miss CF in Asian (44%), Black (22%), and Hispanic, Native American and Alaskan Native babies (14%), the Times article stated. In the United States, the number of CF variants tested for falls into a wide range: from the one variant found mostly in White populations in Mississippi (with a 38% Black populace) to 689 variants in Wisconsin.
Not too far back, CF was thought of as an inherited childhood disease leading often to childhood or adolescent mortality.
Today’s CF challenges
Beyond refinements in screening instruments and policies that broaden access leading to the earliest possible diagnoses, ongoing research needs include finding treatments for other variants, and caring for adult populations living with treated CF and the disease’s multisystem manifestations. “As people with CF live longer, we need to be very focused on optimized adult medical care for this population,” Marc A. Sala, MD, assistant professor of medicine, Adult CF Program, Northwestern University Feinberg School of Medicine, Chicago, said in an interview. “For example, we need higher vigilance for liver, microvascular, coronary artery disease, and various cancer screenings. We do not know exactly how these will manifest differently from the way they do in non-CF populations, so this is where more work needs to be done.”
Emphasis on monitoring
The authors of “Future therapies for cystic fibrosis” (Allen et al. Nature Communications, 2023 Feb 8), after citing the ongoing transformative change for people with CF since the introduction of CFTR drugs, gave voice to important cautions. “Disease will progress, albeit more slowly, and will be more challenging to monitor. Effective CFTR modulators will likely slow or, at best, halt disease progression, but will not reverse a disease that has already become fixed.” They cited pancreatic destruction in the majority, bronchiectasis, and absence of the vas deferens, with still recurring (although less frequently) pulmonary exacerbations along with chronic infections and persistent airway inflammation. “It is essential that we do not become complacent about disease progression in this population,” the researchers stated. They cautioned also that effective surveillance for infection is critical in asymptomatic patients, emphasizing that it underpins the management of young healthy children with CF who demonstrate disease progression despite a lack of symptoms.
Among the ~90% for whom Trikafta is suitable and approved (those with least one copy of F508del or specific other responsive mutations), improvements include increased percent predicted FEV1 by 10%-15% or more, decreased exacerbations, and improved quality of life,” Dr. Sala said. “Subsequent ‘real world’ experience shows dramatic reductions in sputum production and decreased frequency of lung transplant.”
Mutation agnostic therapy
Unfortunately, CF mutants, outside the population eligible for Trikafta, are prodigious in number and do not fall into just a few major groups. “Furthermore, although CF is a monogenic disease, it has variable phenotypes even for two individuals with the same mutations,” Dr. Sala said. “Current CFTR modulators act on the dysfunctional CFTR protein (either as channel gating potentiators or molecular chaperones to improve misfolding). That leaves about 10% of the CF population, those with little to no protein production (such as in nonsense mutations) ineligible for treatment with CFTR modulators. “The ideal for efficacy and equity, given that some CFTR mutations only exist in a handful of people, would be to develop a ‘mutation agnostic’ strategy — such as with mRNA or gene delivery. Here you could imagine that regardless of the type of mutation, a patient would then be able to receive the technology to increase CFTR channel function,” Dr. Sala said. Many modifiable factors, including host immunity and non-CFTR genes that impact CFTR indirectly, may underlie the fact that one person has a worse trajectory than another. “New therapies may also be found in this area of research,” Dr. Sala said.
Strategies in testing phases
“For patients with class I (nonsense) mutations there is hope that small molecules will be identified that can facilitate premature truncation codon (PTC) read-through and/or impede mRNA decay allowing for clinically relevant levels of functional CFTR,” the researchers noted. While the most extensively developed, ataluren, an oxadiazole, failed in phase 3 trials after initial promise, other ribosomal read-through drugs are in preclinical and early phase clinical trials. Also, early encouraging results support an alternative strategy, engineered transfer RNAs (tRNAs) that introduce an amino acid to an elongating peptide in place of the termination codon.
While these will address specific mutations, DNA or mRNA replacement strategies would be “mutation agnostic,” the researchers stated. The major challenge: delivery to the respiratory epithelium. Approaches currently in early testing include an inhaled aerosolized, lipid-based nanoparticle carrier for mRNA delivery, viral and non-viral DNA transfer, lipid-mediated CFTR gene transfer, pseudotyped lentiviral vector and adeno-associated vector transfer of CFTR DNA.
Adult CF care
“Adult CF care in general is a completely new frontier,” Meilinh Thi, DO, director of the adult cystic fibrosis program and assistant professor at University of Texas Health at San Antonio, said in an interview. “It’s fairly new to have separate pediatric and adult CF centers. There’s been a shift,” she said. “We’re encountering diseases in CF that we have not in the past had to deal with: diabetes that has features of both type 1 and type 2, increased colon cancer risk, bone disease, and mental health issues. Also, while pregnancy was previously discouraged for women with CF because of lung disease, now many are giving birth without complications and living normal lives,” Dr. Thi said.
“We do encourage our patients to talk to us before becoming pregnant so we can discuss the risk of passing on the gene. And, we do encourage their significant others to get testing. Some patients and their others, however, do decline to get tested,” she added.
The lifetime health issues conferred by CF, Dr. Thi noted, include lung disease with chronic inflammation, infection, respiratory failure (still the most common cause of death), gastrointestinal disorders (including of the pancreas) , colon obstruction and colon cancer, sinus disease, and reproductive system effects. Their permanence, she said, depends on how far their disease has progressed. “So the earlier you can provide these newer therapies — the modulators, for example, or the gene therapy whenever that comes out, then the less damage these organ systems will have, and the patients, we hope, will then do better.”
Pulmonary telerehabilitation for COPD: Promising, but more data needed
As COVID-19 cedes its pandemic-scale status to the past, its wake is revealing surprises and raising questions, particularly in relation to pulmonary medicine. The need for isolation at COVID’s outset kept many millions at home, creating conditions favorable for the rapid expansion of technologies that were taken up quickly in telehealth applications. The need was overwhelming. But just how effective telehealth actually is at replacing on-site programs for COPD pulmonary rehab has remained a research challenge, although results from early studies show unmistakable value. Creating conditions conducive to research into the strengths and weaknesses of pulmonary rehab, and determining how research can be applied effectively, remain formidable challenges.
Early studies of telehealth pulmonary rehabilitation have not uncovered any glaring erosion of pulmonary rehabilitation’s well-established benefits. But, at the same time, the relatively young field of pulmonary telerehabilitation for chronic obstructive pulmonary disease (COPD) has lacked coordinated efforts to determine its key practices and the instruments for measuring them, both basic elements for pursuing research questions.
A 2021 American Thoracic Society workshop report (AE Holland, https://doi.org/10.1513/AnnalsATS.202102-146ST) identified essential components of a pulmonary rehabilitation model through an online Delphi process involving about 50 international experts. Components ultimately included those with median scores of 2 or higher (strongly agree or agree that the item is essential) and high consensus (interquartile range, 0). Thirteen essential components fit into four categories (Patient Assessment, Program Components, Method of Delivery and Quality Assurance). The Patient Assessment category included seven items: (1) An initial center-based assessment by a health care professional, (2) An exercise test at the time of assessment, (3) A field exercise test, (4) Quality of life measure, (5) Dyspnea assessment, (6) Nutritional status evaluation, and (7) Occupational status evaluation. The Program Components: (8) Endurance training and (9) Resistance training). The Method of Delivery: (10) An exercise program that is individually prescribed, (11) An exercise program that is individually progressed, and (12) Team includes a health care professional with experience in exercise prescription and progression. The single Quality Assurance item: (13) Health care professionals are trained to deliver the components of the model that is deployed.
Cochrane Library review
2021 “Intervention Review” (“Telerehabilitation for chronic respiratory disease,” https://doi.org/10.1002/14651858.CD013040.pub2). Using their own databases (eg, Cochrane Airways Trials Register) and others, the authors included controlled trials published up to November 30, 2020 with at least 50% of the rehabilitation delivered by telerehabilitation. The authors’ analysis of 15 studies (with 32 reports) including 1904 participants (99% with COPD): “There was probably little or no difference between telerehabilitation and in-person pulmonary rehabilitation for exercise capacity measured as 6-Minute Walking Distance (mean difference 0.06 meters (m), 95% confidence interval (CI) -10.82 m to 10.94 m).” They reached the same conclusion for quality of life, and for breathlessness. Completion of rehabilitation programs, however, was more likely with telerehabilitation at 93% versus 70% for in-person rehabilitation. No adverse effects of telerehabilitation were observed over and above those for in-person or no rehabilitation. An obvious limitation of the findings is that the studies all pre-date COVID-19, which would have introduced very significant disincentives for in-person rehabilitation completion.
An older (2016) international randomized controlled study (Zanaboni et al, https://doi.org/10.1186/s12890-016-0288-z) comparing long-term telerehabilitation or unsupervised treadmill training at home with standard care included 120 participants with COPD and had 2-years of follow-up. Telerehabilitation consisted of individualized treadmill training at home. Participants had scheduled exercise sessions supervised by a physiotherapist via videoconferencing following a standardized protocol. Participants in the unsupervised training group were provided with a treadmill only to perform unsupervised exercise at home. They also received an exercise booklet, a paper exercise diary to record their training sessions, and an individualized training program but without regular review or progression of the program. For the primary outcomes of combined hospitalizations and emergency department presentations, incidence rate of hospitalizations and emergency department presentations was lower with telerehabilitation (1.18 events per person-year; 95% confidence interval [CI], 0.94–1.46) and with unsupervised training group (1.14; 95% CI, 0.92–1.41) than in the control group (1.88; 95% CI, 1.58–2.21; P < .001 compared with intervention groups). Both training groups had better health status at 1-year, and achieved and maintained clinically significant improvements in exercise capacity.
Access to pulmonary rehabilitation
Continuing evidence of clear telerehabilitation benefits is good news, especially in the light of impediments to attendance at in-clinic programs. Although the COVID-provoked disincentives have been diminishing, persisting access issues remain for substantial portions of eligible populations, according to a recent (2024) cross-sectional study (PA Kahn, WA Mathis, doi:10.1001/jamanetworkopen.2023.54867) looking at travel time to pulmonary rehabilitation programs as a marker for pulmonary rehabilitation access. The report, based on US Census designations (lower 48 states and Washington, D.C.) found that while 80.3% of the population lives in urban or suburban areas within a 30-minute drive of a pulmonary rehabilitation program, travel time exceeds that in rural and other sparsely populated areas with more than 14 million people residing in areas demanding more than 1-hour for travel. A further analysis showed also that nearly 30% of American Indian and Alaska Native populations live more than 60 minutes from a pulmonary rehabilitation program.
Aside from the obvious restraints for homebound patients or those lacking transportation or who need medical transport, other common impediments inhibit on-site pulmonary rehabilitation attendance, said Corinne Young, MSN, FNP-C, FCCP. Ms. Young is the director of Advance Practice Provider and Clinical Services for Colorado Springs Pulmonary Consultants, president and founder of the Association of Pulmonary Advance Practice Providers, and a member of the CHEST Physician Editorial Board. “I have some patients who say ‘There’s no way I could do onsite pulmonary rehab because of my knee — or back, or shoulder.’ But in their own home environment they may feel more comfortable. They may be willing to try new things at their own pace, whereas for them a program may feel too regimented.” For others, Ms. Young said, aspects of a formal program are a clear plus factor. “They love to hear their progress at the end of — say a 12-week program — where their virtual respiratory therapist records and reports to them their six-minute walk and other test results. Feedback is a great reinforcer.” Quality of life improvements, Ms. Young commented, were one of the very impressive benefits that appeared in the initial studies of pulmonary rehabilitation for COPD patients. “Being patient-centric, you want to improve quality of life for them as much as possible and we see telerehabilitation as a great opportunity for many,” she added.
“I would like to see head-to-head data on outpatient versus at-home pulmonary rehabilitation on hospitalizations, time to exacerbation and, of course, mortality. We have all that for outpatient rehab, but it would be great to be able to compare them. Knowing that would influence what we recommend, especially for patients who could go either way. Also, you have to assess their motivation and discipline to know who might be more appropriate for unsupervised pulmonary rehabilitation.”
The current reality for Ms. Young is that in her Colorado Springs vicinity, where both in-patient programs are only 15 minutes apart, she knows of no telerehabilitation programs being offered. While there are contract telerehabilitation providers, Young said, and her organization (The Association of Pulmonary Advanced Practice Providers) has been approached by one, none are licensed in Colorado, and telerehabilitation is not a billable service.
“As of yet, I’m not aware of any telemedicine pulmonary rehab available at our institution,” said pulmonologist Mary Jo S. Farmer, MD, PhD, FCCP, Associate Professor of Medicine at UMass Chan Medical School – Baystate, Springfield, MA, and a member of the CHEST Physician Editorial Board. A brief internet search identified a telerehabilitation contract provider available only in Arizona.
Reimbursement will also be a foundational concern, Ms. Young commented. While a physician, nurse practitioner, or physician virtual visit for education may be billable, telerehabilitation reimbursement is new territory. “How that all is going to work out is a big unknown piece,” she said.
Minimal components
Effective pulmonary telerehabilitation programs, Ms. Young said, need to provide exercise with an aerobic device, either a treadmill, a stationary bike or even a Cubii-type under desk foot pedal/elliptical machine, and some resistance training (elastic bands, or weights, for example). “But 50% of pulmonary rehabilitation is education about breathing techniques, purse-lip breathing, and pulmonary nutrition.” Also essential: one-on-one discussion with a qualified medical practitioner who checks on oximeter use, inhaler technique, and titrating oxygen therapy. “At our elevation of 6500 feet, most of our patients are on that.” Optimal frequency of encounters between providers and remote patients has to be elucidated by future research, Ms. Young said.
Ms. Young commented further, “With outpatient pulmonary rehabilitation there often isn’t a lot of one-on-one, but rather a big group of people exercising at the same time. I think actually there may be the potential to have more individualization with pulmonary telerehabilitation. But the barriers, the reimbursement/financial part, and the red tape and bureaucracy have to be worked on.”
As COVID-19 cedes its pandemic-scale status to the past, its wake is revealing surprises and raising questions, particularly in relation to pulmonary medicine. The need for isolation at COVID’s outset kept many millions at home, creating conditions favorable for the rapid expansion of technologies that were taken up quickly in telehealth applications. The need was overwhelming. But just how effective telehealth actually is at replacing on-site programs for COPD pulmonary rehab has remained a research challenge, although results from early studies show unmistakable value. Creating conditions conducive to research into the strengths and weaknesses of pulmonary rehab, and determining how research can be applied effectively, remain formidable challenges.
Early studies of telehealth pulmonary rehabilitation have not uncovered any glaring erosion of pulmonary rehabilitation’s well-established benefits. But, at the same time, the relatively young field of pulmonary telerehabilitation for chronic obstructive pulmonary disease (COPD) has lacked coordinated efforts to determine its key practices and the instruments for measuring them, both basic elements for pursuing research questions.
A 2021 American Thoracic Society workshop report (AE Holland, https://doi.org/10.1513/AnnalsATS.202102-146ST) identified essential components of a pulmonary rehabilitation model through an online Delphi process involving about 50 international experts. Components ultimately included those with median scores of 2 or higher (strongly agree or agree that the item is essential) and high consensus (interquartile range, 0). Thirteen essential components fit into four categories (Patient Assessment, Program Components, Method of Delivery and Quality Assurance). The Patient Assessment category included seven items: (1) An initial center-based assessment by a health care professional, (2) An exercise test at the time of assessment, (3) A field exercise test, (4) Quality of life measure, (5) Dyspnea assessment, (6) Nutritional status evaluation, and (7) Occupational status evaluation. The Program Components: (8) Endurance training and (9) Resistance training). The Method of Delivery: (10) An exercise program that is individually prescribed, (11) An exercise program that is individually progressed, and (12) Team includes a health care professional with experience in exercise prescription and progression. The single Quality Assurance item: (13) Health care professionals are trained to deliver the components of the model that is deployed.
Cochrane Library review
2021 “Intervention Review” (“Telerehabilitation for chronic respiratory disease,” https://doi.org/10.1002/14651858.CD013040.pub2). Using their own databases (eg, Cochrane Airways Trials Register) and others, the authors included controlled trials published up to November 30, 2020 with at least 50% of the rehabilitation delivered by telerehabilitation. The authors’ analysis of 15 studies (with 32 reports) including 1904 participants (99% with COPD): “There was probably little or no difference between telerehabilitation and in-person pulmonary rehabilitation for exercise capacity measured as 6-Minute Walking Distance (mean difference 0.06 meters (m), 95% confidence interval (CI) -10.82 m to 10.94 m).” They reached the same conclusion for quality of life, and for breathlessness. Completion of rehabilitation programs, however, was more likely with telerehabilitation at 93% versus 70% for in-person rehabilitation. No adverse effects of telerehabilitation were observed over and above those for in-person or no rehabilitation. An obvious limitation of the findings is that the studies all pre-date COVID-19, which would have introduced very significant disincentives for in-person rehabilitation completion.
An older (2016) international randomized controlled study (Zanaboni et al, https://doi.org/10.1186/s12890-016-0288-z) comparing long-term telerehabilitation or unsupervised treadmill training at home with standard care included 120 participants with COPD and had 2-years of follow-up. Telerehabilitation consisted of individualized treadmill training at home. Participants had scheduled exercise sessions supervised by a physiotherapist via videoconferencing following a standardized protocol. Participants in the unsupervised training group were provided with a treadmill only to perform unsupervised exercise at home. They also received an exercise booklet, a paper exercise diary to record their training sessions, and an individualized training program but without regular review or progression of the program. For the primary outcomes of combined hospitalizations and emergency department presentations, incidence rate of hospitalizations and emergency department presentations was lower with telerehabilitation (1.18 events per person-year; 95% confidence interval [CI], 0.94–1.46) and with unsupervised training group (1.14; 95% CI, 0.92–1.41) than in the control group (1.88; 95% CI, 1.58–2.21; P < .001 compared with intervention groups). Both training groups had better health status at 1-year, and achieved and maintained clinically significant improvements in exercise capacity.
Access to pulmonary rehabilitation
Continuing evidence of clear telerehabilitation benefits is good news, especially in the light of impediments to attendance at in-clinic programs. Although the COVID-provoked disincentives have been diminishing, persisting access issues remain for substantial portions of eligible populations, according to a recent (2024) cross-sectional study (PA Kahn, WA Mathis, doi:10.1001/jamanetworkopen.2023.54867) looking at travel time to pulmonary rehabilitation programs as a marker for pulmonary rehabilitation access. The report, based on US Census designations (lower 48 states and Washington, D.C.) found that while 80.3% of the population lives in urban or suburban areas within a 30-minute drive of a pulmonary rehabilitation program, travel time exceeds that in rural and other sparsely populated areas with more than 14 million people residing in areas demanding more than 1-hour for travel. A further analysis showed also that nearly 30% of American Indian and Alaska Native populations live more than 60 minutes from a pulmonary rehabilitation program.
Aside from the obvious restraints for homebound patients or those lacking transportation or who need medical transport, other common impediments inhibit on-site pulmonary rehabilitation attendance, said Corinne Young, MSN, FNP-C, FCCP. Ms. Young is the director of Advance Practice Provider and Clinical Services for Colorado Springs Pulmonary Consultants, president and founder of the Association of Pulmonary Advance Practice Providers, and a member of the CHEST Physician Editorial Board. “I have some patients who say ‘There’s no way I could do onsite pulmonary rehab because of my knee — or back, or shoulder.’ But in their own home environment they may feel more comfortable. They may be willing to try new things at their own pace, whereas for them a program may feel too regimented.” For others, Ms. Young said, aspects of a formal program are a clear plus factor. “They love to hear their progress at the end of — say a 12-week program — where their virtual respiratory therapist records and reports to them their six-minute walk and other test results. Feedback is a great reinforcer.” Quality of life improvements, Ms. Young commented, were one of the very impressive benefits that appeared in the initial studies of pulmonary rehabilitation for COPD patients. “Being patient-centric, you want to improve quality of life for them as much as possible and we see telerehabilitation as a great opportunity for many,” she added.
“I would like to see head-to-head data on outpatient versus at-home pulmonary rehabilitation on hospitalizations, time to exacerbation and, of course, mortality. We have all that for outpatient rehab, but it would be great to be able to compare them. Knowing that would influence what we recommend, especially for patients who could go either way. Also, you have to assess their motivation and discipline to know who might be more appropriate for unsupervised pulmonary rehabilitation.”
The current reality for Ms. Young is that in her Colorado Springs vicinity, where both in-patient programs are only 15 minutes apart, she knows of no telerehabilitation programs being offered. While there are contract telerehabilitation providers, Young said, and her organization (The Association of Pulmonary Advanced Practice Providers) has been approached by one, none are licensed in Colorado, and telerehabilitation is not a billable service.
“As of yet, I’m not aware of any telemedicine pulmonary rehab available at our institution,” said pulmonologist Mary Jo S. Farmer, MD, PhD, FCCP, Associate Professor of Medicine at UMass Chan Medical School – Baystate, Springfield, MA, and a member of the CHEST Physician Editorial Board. A brief internet search identified a telerehabilitation contract provider available only in Arizona.
Reimbursement will also be a foundational concern, Ms. Young commented. While a physician, nurse practitioner, or physician virtual visit for education may be billable, telerehabilitation reimbursement is new territory. “How that all is going to work out is a big unknown piece,” she said.
Minimal components
Effective pulmonary telerehabilitation programs, Ms. Young said, need to provide exercise with an aerobic device, either a treadmill, a stationary bike or even a Cubii-type under desk foot pedal/elliptical machine, and some resistance training (elastic bands, or weights, for example). “But 50% of pulmonary rehabilitation is education about breathing techniques, purse-lip breathing, and pulmonary nutrition.” Also essential: one-on-one discussion with a qualified medical practitioner who checks on oximeter use, inhaler technique, and titrating oxygen therapy. “At our elevation of 6500 feet, most of our patients are on that.” Optimal frequency of encounters between providers and remote patients has to be elucidated by future research, Ms. Young said.
Ms. Young commented further, “With outpatient pulmonary rehabilitation there often isn’t a lot of one-on-one, but rather a big group of people exercising at the same time. I think actually there may be the potential to have more individualization with pulmonary telerehabilitation. But the barriers, the reimbursement/financial part, and the red tape and bureaucracy have to be worked on.”
As COVID-19 cedes its pandemic-scale status to the past, its wake is revealing surprises and raising questions, particularly in relation to pulmonary medicine. The need for isolation at COVID’s outset kept many millions at home, creating conditions favorable for the rapid expansion of technologies that were taken up quickly in telehealth applications. The need was overwhelming. But just how effective telehealth actually is at replacing on-site programs for COPD pulmonary rehab has remained a research challenge, although results from early studies show unmistakable value. Creating conditions conducive to research into the strengths and weaknesses of pulmonary rehab, and determining how research can be applied effectively, remain formidable challenges.
Early studies of telehealth pulmonary rehabilitation have not uncovered any glaring erosion of pulmonary rehabilitation’s well-established benefits. But, at the same time, the relatively young field of pulmonary telerehabilitation for chronic obstructive pulmonary disease (COPD) has lacked coordinated efforts to determine its key practices and the instruments for measuring them, both basic elements for pursuing research questions.
A 2021 American Thoracic Society workshop report (AE Holland, https://doi.org/10.1513/AnnalsATS.202102-146ST) identified essential components of a pulmonary rehabilitation model through an online Delphi process involving about 50 international experts. Components ultimately included those with median scores of 2 or higher (strongly agree or agree that the item is essential) and high consensus (interquartile range, 0). Thirteen essential components fit into four categories (Patient Assessment, Program Components, Method of Delivery and Quality Assurance). The Patient Assessment category included seven items: (1) An initial center-based assessment by a health care professional, (2) An exercise test at the time of assessment, (3) A field exercise test, (4) Quality of life measure, (5) Dyspnea assessment, (6) Nutritional status evaluation, and (7) Occupational status evaluation. The Program Components: (8) Endurance training and (9) Resistance training). The Method of Delivery: (10) An exercise program that is individually prescribed, (11) An exercise program that is individually progressed, and (12) Team includes a health care professional with experience in exercise prescription and progression. The single Quality Assurance item: (13) Health care professionals are trained to deliver the components of the model that is deployed.
Cochrane Library review
2021 “Intervention Review” (“Telerehabilitation for chronic respiratory disease,” https://doi.org/10.1002/14651858.CD013040.pub2). Using their own databases (eg, Cochrane Airways Trials Register) and others, the authors included controlled trials published up to November 30, 2020 with at least 50% of the rehabilitation delivered by telerehabilitation. The authors’ analysis of 15 studies (with 32 reports) including 1904 participants (99% with COPD): “There was probably little or no difference between telerehabilitation and in-person pulmonary rehabilitation for exercise capacity measured as 6-Minute Walking Distance (mean difference 0.06 meters (m), 95% confidence interval (CI) -10.82 m to 10.94 m).” They reached the same conclusion for quality of life, and for breathlessness. Completion of rehabilitation programs, however, was more likely with telerehabilitation at 93% versus 70% for in-person rehabilitation. No adverse effects of telerehabilitation were observed over and above those for in-person or no rehabilitation. An obvious limitation of the findings is that the studies all pre-date COVID-19, which would have introduced very significant disincentives for in-person rehabilitation completion.
An older (2016) international randomized controlled study (Zanaboni et al, https://doi.org/10.1186/s12890-016-0288-z) comparing long-term telerehabilitation or unsupervised treadmill training at home with standard care included 120 participants with COPD and had 2-years of follow-up. Telerehabilitation consisted of individualized treadmill training at home. Participants had scheduled exercise sessions supervised by a physiotherapist via videoconferencing following a standardized protocol. Participants in the unsupervised training group were provided with a treadmill only to perform unsupervised exercise at home. They also received an exercise booklet, a paper exercise diary to record their training sessions, and an individualized training program but without regular review or progression of the program. For the primary outcomes of combined hospitalizations and emergency department presentations, incidence rate of hospitalizations and emergency department presentations was lower with telerehabilitation (1.18 events per person-year; 95% confidence interval [CI], 0.94–1.46) and with unsupervised training group (1.14; 95% CI, 0.92–1.41) than in the control group (1.88; 95% CI, 1.58–2.21; P < .001 compared with intervention groups). Both training groups had better health status at 1-year, and achieved and maintained clinically significant improvements in exercise capacity.
Access to pulmonary rehabilitation
Continuing evidence of clear telerehabilitation benefits is good news, especially in the light of impediments to attendance at in-clinic programs. Although the COVID-provoked disincentives have been diminishing, persisting access issues remain for substantial portions of eligible populations, according to a recent (2024) cross-sectional study (PA Kahn, WA Mathis, doi:10.1001/jamanetworkopen.2023.54867) looking at travel time to pulmonary rehabilitation programs as a marker for pulmonary rehabilitation access. The report, based on US Census designations (lower 48 states and Washington, D.C.) found that while 80.3% of the population lives in urban or suburban areas within a 30-minute drive of a pulmonary rehabilitation program, travel time exceeds that in rural and other sparsely populated areas with more than 14 million people residing in areas demanding more than 1-hour for travel. A further analysis showed also that nearly 30% of American Indian and Alaska Native populations live more than 60 minutes from a pulmonary rehabilitation program.
Aside from the obvious restraints for homebound patients or those lacking transportation or who need medical transport, other common impediments inhibit on-site pulmonary rehabilitation attendance, said Corinne Young, MSN, FNP-C, FCCP. Ms. Young is the director of Advance Practice Provider and Clinical Services for Colorado Springs Pulmonary Consultants, president and founder of the Association of Pulmonary Advance Practice Providers, and a member of the CHEST Physician Editorial Board. “I have some patients who say ‘There’s no way I could do onsite pulmonary rehab because of my knee — or back, or shoulder.’ But in their own home environment they may feel more comfortable. They may be willing to try new things at their own pace, whereas for them a program may feel too regimented.” For others, Ms. Young said, aspects of a formal program are a clear plus factor. “They love to hear their progress at the end of — say a 12-week program — where their virtual respiratory therapist records and reports to them their six-minute walk and other test results. Feedback is a great reinforcer.” Quality of life improvements, Ms. Young commented, were one of the very impressive benefits that appeared in the initial studies of pulmonary rehabilitation for COPD patients. “Being patient-centric, you want to improve quality of life for them as much as possible and we see telerehabilitation as a great opportunity for many,” she added.
“I would like to see head-to-head data on outpatient versus at-home pulmonary rehabilitation on hospitalizations, time to exacerbation and, of course, mortality. We have all that for outpatient rehab, but it would be great to be able to compare them. Knowing that would influence what we recommend, especially for patients who could go either way. Also, you have to assess their motivation and discipline to know who might be more appropriate for unsupervised pulmonary rehabilitation.”
The current reality for Ms. Young is that in her Colorado Springs vicinity, where both in-patient programs are only 15 minutes apart, she knows of no telerehabilitation programs being offered. While there are contract telerehabilitation providers, Young said, and her organization (The Association of Pulmonary Advanced Practice Providers) has been approached by one, none are licensed in Colorado, and telerehabilitation is not a billable service.
“As of yet, I’m not aware of any telemedicine pulmonary rehab available at our institution,” said pulmonologist Mary Jo S. Farmer, MD, PhD, FCCP, Associate Professor of Medicine at UMass Chan Medical School – Baystate, Springfield, MA, and a member of the CHEST Physician Editorial Board. A brief internet search identified a telerehabilitation contract provider available only in Arizona.
Reimbursement will also be a foundational concern, Ms. Young commented. While a physician, nurse practitioner, or physician virtual visit for education may be billable, telerehabilitation reimbursement is new territory. “How that all is going to work out is a big unknown piece,” she said.
Minimal components
Effective pulmonary telerehabilitation programs, Ms. Young said, need to provide exercise with an aerobic device, either a treadmill, a stationary bike or even a Cubii-type under desk foot pedal/elliptical machine, and some resistance training (elastic bands, or weights, for example). “But 50% of pulmonary rehabilitation is education about breathing techniques, purse-lip breathing, and pulmonary nutrition.” Also essential: one-on-one discussion with a qualified medical practitioner who checks on oximeter use, inhaler technique, and titrating oxygen therapy. “At our elevation of 6500 feet, most of our patients are on that.” Optimal frequency of encounters between providers and remote patients has to be elucidated by future research, Ms. Young said.
Ms. Young commented further, “With outpatient pulmonary rehabilitation there often isn’t a lot of one-on-one, but rather a big group of people exercising at the same time. I think actually there may be the potential to have more individualization with pulmonary telerehabilitation. But the barriers, the reimbursement/financial part, and the red tape and bureaucracy have to be worked on.”
Asthma, COPD inhaler price caps set for summer
In addition to warmer weather, June will usher in changes in asthma and COPD inhaler costs for many patients, potentially reducing barriers to those seeing high prescription prices. Price ceilings have been set by some companies, likely following action earlier this year by a Senate Committee which pointed to higher costs of US inhalers compared with other countries.
Senator Sanders stated: “In my view, Americans who have asthma and COPD should not be forced to pay, in many cases, 10-70 times more for the same exact inhalers as patients in Europe and other parts of the world.”
Starting June 1, Boehringer Ingelheim will cap out-of-pocket costs for the company’s inhaler products for chronic lung disease and asthma at $35 per month, according to a March 7, 2024, press release from the German drugmaker’s US headquarters in Ridgefield, Conn. The reductions cover the full range of the company’s inhaler products for asthma and chronic obstructive pulmonary disease (COPD) including Atrovent, Combivent Respimat and Spiriva HandiHaler and Respimat, Stiolto Respimat and Striverdi Respimat. In the release, Boehringer Ingelheim USA Corporation’s President and CEO Jean-Michel Boers stated, “The US health care system is complex and often doesn’t work for patients, especially the most vulnerable. While we can’t fix the entire system alone, we are bringing forward a solution to make it fairer. We want to do our part to help patients living with COPD or asthma who struggle to pay for their medications.”
Similar announcements were made by AstraZeneca and GSK. GSK’s cap will go into effect on January 1, 2025, and includes Advair Diskus, Advair HFA, Anoro Ellipta, Arnuity Ellipta, Breo Ellipta, Incruse Ellipta, Serevent Diskus, Trelegy Ellipta, and Ventolin HFA. The AstraZeneca cap, which covers Airsupra, Bevespi Aerosphere, Breztri Aeroshpere, and Symbicort, goes into effect on June 1, 2024.
Senate statement on pricing
These companies plus Teva had received letters sent on January 8, 2024, by the members of the Senate Committee on Health, Education, Labor, and Pensions: senators Sanders, Baldwin, Luján and Markey. The letters cited enormous inhaler price discrepancies, for example $489 for Combivent Respimat in the United States but just $7 in France, and announced the conduct of an investigation into efforts by these companies to artificially inflate and manipulate prices of asthma inhalers that have been on the market for decades. A statement from Sen. Sanders’ office noted that AstraZeneca, GSK, and Teva made more than $25 billion in revenue from inhalers alone in the past 5 years (Boehringer Ingelheim does not provide public US inhaler revenue information).
Suit claims generic delay
A federal lawsuit filed in Boston on March 6, according to a Reuters brief from March 7, cited Boehringer for improperly submitting patents to the US Food and Drug Administration (FDA). The purpose of those patents, the suit charges, was to delay generic competition and inflate Combivent Respimat and Spiriva Respimat inhaler prices.
Inhaler prices soared in the United States, according to a March 10 U.S. News & World Report commentary by The Conversation, a nonprofit news organization, after the 2008 FDA ban on chlorofluorocarbon (CFC)-propellants led to the phase-out of CFC-containing inhalers and their replacement with hydrofluoroalkane-propellant inhalers. For the insured that meant an average out-of-pocket inhaler cost increase from $13.60 per prescription in 2004 to $25 in 2015. The current rate for the now nongeneric HFA-propelled but otherwise identical albuterol inhaler is $98. Competition from a more recently FDA-approved (2020) generic version has not been robust enough to effect meaningful price reductions, the report stated. While good insurance generally covers most of inhaler costs, the more than 25 million uninsured in 2023 faced steep market prices that put strain even on some insured, the CDC found, driving many in the United States to purchase from Mexican, Canadian, or other foreign pharmacies. The Teva QVAR REdiHaler corticosteroid inhaler, costing $9 in Germany, costs $286 in the US. Dosages, however, may not be identical. A first FDA-authorization of drug importing this past January applied only to agents for a limited number of disease states and pertained only to Florida, but may serve as a model for other states, according to the commentary.
“The announced price cap from Boehringer Ingelheim,” stated Kenneth Mendez, president and CEO of the Asthma and Allergy Foundation of America (AAFA) in a press release, “is a step toward improving access to essential asthma medicine and demonstrates that the voice of the asthma patient community is being heard.” The AAFA release noted further that asthma death rates, while declining overall, are triple in Blacks compared with Whites. Death rates, asthma rates, and rates of being uninsured or underinsured are much higher in Black and Puerto Rican populations than in Whites. The complex layers of the current US system, composed of pharmaceutical manufacturers, pharmacy benefit managers, insurance companies, employers, and federal policies often conspire against those people who need asthma drugs the most. AAFA research has shown that when drug prices become a barrier to treatment, people with asthma ration or simply discontinue their essential asthma medications. Beyond saved lives, access to asthma medications can reduce hospitalizations and lower the more than $82 billion in annual asthma costs to the US economy.
Sen. Sanders, on March 20, applauded the GSK announcement: “As Chairman of the Senate Health, Education, Labor, and Pensions Committee, I very much appreciate GlaxoSmithKline’s announcement today that Americans throughout the country with asthma and COPD will pay no more than $35 for the brand name inhalers they manufacture. I look forward to working with GSK to make sure that this decision reaches as many patients as possible.”
“Inhaled medications continue to be an essential part of the therapy for patients with asthma, COPD, and other respiratory conditions,” said Diego J. Maselli, professor and chief, Division of Pulmonary Diseases & Critical Care, UT Health at San Antonio, San Antonio, Texas, in an interview with CHEST Physician. He added, “Unfortunately, with increasing cost of these and other treatments, access has been challenging for many patients. Patients, families, and providers constantly experience frustration with the difficulties of obtaining these lifesaving medications, and cost is the main barrier. Even those with ample insurance coverage face difficult challenges, as the high prices of these medications motivate insurance carriers to constantly adjust what is the ‘preferred’ option among inhalers. Regrettably, noncompliance and nonadherence to inhaled therapies has been linked to poor patient outcomes and increased health care utilization in both asthma and COPD. Because of the high prevalence of these diseases in the US and worldwide, efforts to increase the access of these vital medications has been a priority. With the leveling of the prices of these medications across the world, we hope that there will be both improved access and, as a consequence, better patient outcomes.”
In addition to warmer weather, June will usher in changes in asthma and COPD inhaler costs for many patients, potentially reducing barriers to those seeing high prescription prices. Price ceilings have been set by some companies, likely following action earlier this year by a Senate Committee which pointed to higher costs of US inhalers compared with other countries.
Senator Sanders stated: “In my view, Americans who have asthma and COPD should not be forced to pay, in many cases, 10-70 times more for the same exact inhalers as patients in Europe and other parts of the world.”
Starting June 1, Boehringer Ingelheim will cap out-of-pocket costs for the company’s inhaler products for chronic lung disease and asthma at $35 per month, according to a March 7, 2024, press release from the German drugmaker’s US headquarters in Ridgefield, Conn. The reductions cover the full range of the company’s inhaler products for asthma and chronic obstructive pulmonary disease (COPD) including Atrovent, Combivent Respimat and Spiriva HandiHaler and Respimat, Stiolto Respimat and Striverdi Respimat. In the release, Boehringer Ingelheim USA Corporation’s President and CEO Jean-Michel Boers stated, “The US health care system is complex and often doesn’t work for patients, especially the most vulnerable. While we can’t fix the entire system alone, we are bringing forward a solution to make it fairer. We want to do our part to help patients living with COPD or asthma who struggle to pay for their medications.”
Similar announcements were made by AstraZeneca and GSK. GSK’s cap will go into effect on January 1, 2025, and includes Advair Diskus, Advair HFA, Anoro Ellipta, Arnuity Ellipta, Breo Ellipta, Incruse Ellipta, Serevent Diskus, Trelegy Ellipta, and Ventolin HFA. The AstraZeneca cap, which covers Airsupra, Bevespi Aerosphere, Breztri Aeroshpere, and Symbicort, goes into effect on June 1, 2024.
Senate statement on pricing
These companies plus Teva had received letters sent on January 8, 2024, by the members of the Senate Committee on Health, Education, Labor, and Pensions: senators Sanders, Baldwin, Luján and Markey. The letters cited enormous inhaler price discrepancies, for example $489 for Combivent Respimat in the United States but just $7 in France, and announced the conduct of an investigation into efforts by these companies to artificially inflate and manipulate prices of asthma inhalers that have been on the market for decades. A statement from Sen. Sanders’ office noted that AstraZeneca, GSK, and Teva made more than $25 billion in revenue from inhalers alone in the past 5 years (Boehringer Ingelheim does not provide public US inhaler revenue information).
Suit claims generic delay
A federal lawsuit filed in Boston on March 6, according to a Reuters brief from March 7, cited Boehringer for improperly submitting patents to the US Food and Drug Administration (FDA). The purpose of those patents, the suit charges, was to delay generic competition and inflate Combivent Respimat and Spiriva Respimat inhaler prices.
Inhaler prices soared in the United States, according to a March 10 U.S. News & World Report commentary by The Conversation, a nonprofit news organization, after the 2008 FDA ban on chlorofluorocarbon (CFC)-propellants led to the phase-out of CFC-containing inhalers and their replacement with hydrofluoroalkane-propellant inhalers. For the insured that meant an average out-of-pocket inhaler cost increase from $13.60 per prescription in 2004 to $25 in 2015. The current rate for the now nongeneric HFA-propelled but otherwise identical albuterol inhaler is $98. Competition from a more recently FDA-approved (2020) generic version has not been robust enough to effect meaningful price reductions, the report stated. While good insurance generally covers most of inhaler costs, the more than 25 million uninsured in 2023 faced steep market prices that put strain even on some insured, the CDC found, driving many in the United States to purchase from Mexican, Canadian, or other foreign pharmacies. The Teva QVAR REdiHaler corticosteroid inhaler, costing $9 in Germany, costs $286 in the US. Dosages, however, may not be identical. A first FDA-authorization of drug importing this past January applied only to agents for a limited number of disease states and pertained only to Florida, but may serve as a model for other states, according to the commentary.
“The announced price cap from Boehringer Ingelheim,” stated Kenneth Mendez, president and CEO of the Asthma and Allergy Foundation of America (AAFA) in a press release, “is a step toward improving access to essential asthma medicine and demonstrates that the voice of the asthma patient community is being heard.” The AAFA release noted further that asthma death rates, while declining overall, are triple in Blacks compared with Whites. Death rates, asthma rates, and rates of being uninsured or underinsured are much higher in Black and Puerto Rican populations than in Whites. The complex layers of the current US system, composed of pharmaceutical manufacturers, pharmacy benefit managers, insurance companies, employers, and federal policies often conspire against those people who need asthma drugs the most. AAFA research has shown that when drug prices become a barrier to treatment, people with asthma ration or simply discontinue their essential asthma medications. Beyond saved lives, access to asthma medications can reduce hospitalizations and lower the more than $82 billion in annual asthma costs to the US economy.
Sen. Sanders, on March 20, applauded the GSK announcement: “As Chairman of the Senate Health, Education, Labor, and Pensions Committee, I very much appreciate GlaxoSmithKline’s announcement today that Americans throughout the country with asthma and COPD will pay no more than $35 for the brand name inhalers they manufacture. I look forward to working with GSK to make sure that this decision reaches as many patients as possible.”
“Inhaled medications continue to be an essential part of the therapy for patients with asthma, COPD, and other respiratory conditions,” said Diego J. Maselli, professor and chief, Division of Pulmonary Diseases & Critical Care, UT Health at San Antonio, San Antonio, Texas, in an interview with CHEST Physician. He added, “Unfortunately, with increasing cost of these and other treatments, access has been challenging for many patients. Patients, families, and providers constantly experience frustration with the difficulties of obtaining these lifesaving medications, and cost is the main barrier. Even those with ample insurance coverage face difficult challenges, as the high prices of these medications motivate insurance carriers to constantly adjust what is the ‘preferred’ option among inhalers. Regrettably, noncompliance and nonadherence to inhaled therapies has been linked to poor patient outcomes and increased health care utilization in both asthma and COPD. Because of the high prevalence of these diseases in the US and worldwide, efforts to increase the access of these vital medications has been a priority. With the leveling of the prices of these medications across the world, we hope that there will be both improved access and, as a consequence, better patient outcomes.”
In addition to warmer weather, June will usher in changes in asthma and COPD inhaler costs for many patients, potentially reducing barriers to those seeing high prescription prices. Price ceilings have been set by some companies, likely following action earlier this year by a Senate Committee which pointed to higher costs of US inhalers compared with other countries.
Senator Sanders stated: “In my view, Americans who have asthma and COPD should not be forced to pay, in many cases, 10-70 times more for the same exact inhalers as patients in Europe and other parts of the world.”
Starting June 1, Boehringer Ingelheim will cap out-of-pocket costs for the company’s inhaler products for chronic lung disease and asthma at $35 per month, according to a March 7, 2024, press release from the German drugmaker’s US headquarters in Ridgefield, Conn. The reductions cover the full range of the company’s inhaler products for asthma and chronic obstructive pulmonary disease (COPD) including Atrovent, Combivent Respimat and Spiriva HandiHaler and Respimat, Stiolto Respimat and Striverdi Respimat. In the release, Boehringer Ingelheim USA Corporation’s President and CEO Jean-Michel Boers stated, “The US health care system is complex and often doesn’t work for patients, especially the most vulnerable. While we can’t fix the entire system alone, we are bringing forward a solution to make it fairer. We want to do our part to help patients living with COPD or asthma who struggle to pay for their medications.”
Similar announcements were made by AstraZeneca and GSK. GSK’s cap will go into effect on January 1, 2025, and includes Advair Diskus, Advair HFA, Anoro Ellipta, Arnuity Ellipta, Breo Ellipta, Incruse Ellipta, Serevent Diskus, Trelegy Ellipta, and Ventolin HFA. The AstraZeneca cap, which covers Airsupra, Bevespi Aerosphere, Breztri Aeroshpere, and Symbicort, goes into effect on June 1, 2024.
Senate statement on pricing
These companies plus Teva had received letters sent on January 8, 2024, by the members of the Senate Committee on Health, Education, Labor, and Pensions: senators Sanders, Baldwin, Luján and Markey. The letters cited enormous inhaler price discrepancies, for example $489 for Combivent Respimat in the United States but just $7 in France, and announced the conduct of an investigation into efforts by these companies to artificially inflate and manipulate prices of asthma inhalers that have been on the market for decades. A statement from Sen. Sanders’ office noted that AstraZeneca, GSK, and Teva made more than $25 billion in revenue from inhalers alone in the past 5 years (Boehringer Ingelheim does not provide public US inhaler revenue information).
Suit claims generic delay
A federal lawsuit filed in Boston on March 6, according to a Reuters brief from March 7, cited Boehringer for improperly submitting patents to the US Food and Drug Administration (FDA). The purpose of those patents, the suit charges, was to delay generic competition and inflate Combivent Respimat and Spiriva Respimat inhaler prices.
Inhaler prices soared in the United States, according to a March 10 U.S. News & World Report commentary by The Conversation, a nonprofit news organization, after the 2008 FDA ban on chlorofluorocarbon (CFC)-propellants led to the phase-out of CFC-containing inhalers and their replacement with hydrofluoroalkane-propellant inhalers. For the insured that meant an average out-of-pocket inhaler cost increase from $13.60 per prescription in 2004 to $25 in 2015. The current rate for the now nongeneric HFA-propelled but otherwise identical albuterol inhaler is $98. Competition from a more recently FDA-approved (2020) generic version has not been robust enough to effect meaningful price reductions, the report stated. While good insurance generally covers most of inhaler costs, the more than 25 million uninsured in 2023 faced steep market prices that put strain even on some insured, the CDC found, driving many in the United States to purchase from Mexican, Canadian, or other foreign pharmacies. The Teva QVAR REdiHaler corticosteroid inhaler, costing $9 in Germany, costs $286 in the US. Dosages, however, may not be identical. A first FDA-authorization of drug importing this past January applied only to agents for a limited number of disease states and pertained only to Florida, but may serve as a model for other states, according to the commentary.
“The announced price cap from Boehringer Ingelheim,” stated Kenneth Mendez, president and CEO of the Asthma and Allergy Foundation of America (AAFA) in a press release, “is a step toward improving access to essential asthma medicine and demonstrates that the voice of the asthma patient community is being heard.” The AAFA release noted further that asthma death rates, while declining overall, are triple in Blacks compared with Whites. Death rates, asthma rates, and rates of being uninsured or underinsured are much higher in Black and Puerto Rican populations than in Whites. The complex layers of the current US system, composed of pharmaceutical manufacturers, pharmacy benefit managers, insurance companies, employers, and federal policies often conspire against those people who need asthma drugs the most. AAFA research has shown that when drug prices become a barrier to treatment, people with asthma ration or simply discontinue their essential asthma medications. Beyond saved lives, access to asthma medications can reduce hospitalizations and lower the more than $82 billion in annual asthma costs to the US economy.
Sen. Sanders, on March 20, applauded the GSK announcement: “As Chairman of the Senate Health, Education, Labor, and Pensions Committee, I very much appreciate GlaxoSmithKline’s announcement today that Americans throughout the country with asthma and COPD will pay no more than $35 for the brand name inhalers they manufacture. I look forward to working with GSK to make sure that this decision reaches as many patients as possible.”
“Inhaled medications continue to be an essential part of the therapy for patients with asthma, COPD, and other respiratory conditions,” said Diego J. Maselli, professor and chief, Division of Pulmonary Diseases & Critical Care, UT Health at San Antonio, San Antonio, Texas, in an interview with CHEST Physician. He added, “Unfortunately, with increasing cost of these and other treatments, access has been challenging for many patients. Patients, families, and providers constantly experience frustration with the difficulties of obtaining these lifesaving medications, and cost is the main barrier. Even those with ample insurance coverage face difficult challenges, as the high prices of these medications motivate insurance carriers to constantly adjust what is the ‘preferred’ option among inhalers. Regrettably, noncompliance and nonadherence to inhaled therapies has been linked to poor patient outcomes and increased health care utilization in both asthma and COPD. Because of the high prevalence of these diseases in the US and worldwide, efforts to increase the access of these vital medications has been a priority. With the leveling of the prices of these medications across the world, we hope that there will be both improved access and, as a consequence, better patient outcomes.”
Digital Inhaler Discontinuations: Not Enough Uptake of Device
On the heels of the January 2024 announcement by GlaxoSmithKline that its Flovent inhalers are being discontinued, Teva’s recent announcement that it will discontinue U.S. distribution of its Digihaler® products is adding concern and complication to patients’ and physicians’ efforts to manage asthma symptoms.
“It is unfortunate to hear that more asthma inhalers are being discontinued,” Asthma and Allergy Foundation of America (AAFA) President and CEO Kenneth Mendez, said in an interview. The impact of Teva’s June 1 discontinuations of its Digihaler portfolio (ProAir Digihaler, AirDuo Digihaler, and ArmonAir Digihaler), he added, is only partially softened by Teva’s reassurance that its still-available RespiClick devices deliver the same drug formulations via the same devices as the ProAir and AirDuo products — because they lack the innovative digital component. “The Teva Digihaler portfolio had offered an innovative approach to encourage adherence to treatment by integrating a digital solution with an inhaler.”
Digital App Companion to Inhaler
The digital components of the AirDuo Digihaler (fluticasone propionate and salmeterol) inhalation powder and ArmonAir Digihaler (fluticasone propionate) inhalation powder, both maintenance inhalers for patients 12-years or older with asthma, include built-in Bluetooth® wireless technology that connects to a companion mobile app. Their triggers for recording data on inhaler use are either the opening of the inhaler cap or the patient’s inhalation. The devices detect, record, and store data on inhaler use and peak inspiratory flow.
Also, they can remind the patient as to how often the devices have been used, measure inspiratory flow rates, and indicate when inhalation technique may need improvement. Data are then directly sent to the Digihaler app via Bluetooth technology, giving discretion to patients as to whether or not their data will be shared with health care providers.
When patients share their digital inhaler device-recorded data, Teva sources state, providers can more objectively assess the patients’ inhaler use patterns and habits to determine if they are using them as prescribed, and through inspiratory flow rates, judge whether or not patients may need inhaler technique coaching.
Possibility for Objective Data
“I was excited about the Digihaler when it was first launched,” said Maureen George, RN, PhD, of Columbia University School of Nursing, New York, “because it gave very good objective feedback on patients’ inhaler technique through peak inspiratory flow. It showed whether they missed doses or if there were patterns of increased use with increased symptoms.
“Inhaled medications are the only therapy that — if you inaccurately administer them — you don’t actually get any drug, at all,” she said in an interview. “If you don’t get the drug into the target organ, the lungs, you don’t get symptom relief, nor disease remission. Actually, most patients use their devices incorrectly, and most healthcare professionals can’t demonstrate correct delivery technique. At the pharmacy, you’re unlikely to see a real pharmacist, and more likely to see just a cashier. No other product that I know of has offered that degree of sophistication in terms of the different steps of inhaler technique.”
CONNECT2: Better Asthma Control at 24 Weeks
Benefits in asthma control for the Digihaler System have been confirmed recently in clinical research. The CONNECT2 trial compared asthma control with the Digihaler System (DS) versus standard of care (SoC) in patients 13 years or older with uncontrolled asthma (Asthma Control Test [ACT] score < 19). Investigators randomized them open-label 4:3 to the DS (n = 210) or SoC (n = 181) for 24 weeks. Primary endpoint assessment of the proportion of patients achieving well-controlled asthma (ie, an ACT score ≥ 20 or increase from baseline of ≥ 3 units at week 24) revealed an 88.7% higher probability that DS patients would have greater odds of achieving asthma control improvement at week 24, with 35% higher odds of asthma control in the DS group. Also, clinician-participant interactions, mostly addressing poor inhaler technique, were more frequent in the DS group. Six-month adherence was good (68.6%, vs 79.2% at month 1), and reliever use at month 6 was decreased by 38.2% from baseline in the DS group.
Lack of Inhaler Uptake
“It made me sad to hear that it was going away. It’s a device that should have been useful,” Dr. George said, “but the wonderful features that could have come at an individual level or at a population health level just were never realized. I don’t think it was from lack of trying on the company’s part, but when it was launched, insurance companies wouldn’t pay the extra cost that comes with having an integrated electronic monitoring device. They weren’t convinced that the return on investment down the road from improved disease control and fewer very expensive acute hospitalizations was worth it. So the uptake was poor.”
Where does this leave patients? Mr. Mendez stated, “It is imperative that people using Teva’s Digihaler products to treat their asthma reach out to their provider now to determine the best alternative treatment options. Unfortunately, when GSK discontinued Flovent, some people using that inhaler were transitioned to the ArmonAir Digihaler. Also, some formularies do not cover the authorized generic of Flovent, forcing patients to change treatment.”
The AAFA press release of April 15 lists in detail available alternatives to Teva’s discontinued devices, naming quick-relief inhalers and inhaled corticosteroids, noting where dosing, devices, or active ingredients are at variance from the Teva products. The AAFA document also lists and describes inhaler device types (metered dose inhaler, breath actuated inhaler, dry powder inhaler and soft mist inhaler) and their differences in detail.
On the heels of the January 2024 announcement by GlaxoSmithKline that its Flovent inhalers are being discontinued, Teva’s recent announcement that it will discontinue U.S. distribution of its Digihaler® products is adding concern and complication to patients’ and physicians’ efforts to manage asthma symptoms.
“It is unfortunate to hear that more asthma inhalers are being discontinued,” Asthma and Allergy Foundation of America (AAFA) President and CEO Kenneth Mendez, said in an interview. The impact of Teva’s June 1 discontinuations of its Digihaler portfolio (ProAir Digihaler, AirDuo Digihaler, and ArmonAir Digihaler), he added, is only partially softened by Teva’s reassurance that its still-available RespiClick devices deliver the same drug formulations via the same devices as the ProAir and AirDuo products — because they lack the innovative digital component. “The Teva Digihaler portfolio had offered an innovative approach to encourage adherence to treatment by integrating a digital solution with an inhaler.”
Digital App Companion to Inhaler
The digital components of the AirDuo Digihaler (fluticasone propionate and salmeterol) inhalation powder and ArmonAir Digihaler (fluticasone propionate) inhalation powder, both maintenance inhalers for patients 12-years or older with asthma, include built-in Bluetooth® wireless technology that connects to a companion mobile app. Their triggers for recording data on inhaler use are either the opening of the inhaler cap or the patient’s inhalation. The devices detect, record, and store data on inhaler use and peak inspiratory flow.
Also, they can remind the patient as to how often the devices have been used, measure inspiratory flow rates, and indicate when inhalation technique may need improvement. Data are then directly sent to the Digihaler app via Bluetooth technology, giving discretion to patients as to whether or not their data will be shared with health care providers.
When patients share their digital inhaler device-recorded data, Teva sources state, providers can more objectively assess the patients’ inhaler use patterns and habits to determine if they are using them as prescribed, and through inspiratory flow rates, judge whether or not patients may need inhaler technique coaching.
Possibility for Objective Data
“I was excited about the Digihaler when it was first launched,” said Maureen George, RN, PhD, of Columbia University School of Nursing, New York, “because it gave very good objective feedback on patients’ inhaler technique through peak inspiratory flow. It showed whether they missed doses or if there were patterns of increased use with increased symptoms.
“Inhaled medications are the only therapy that — if you inaccurately administer them — you don’t actually get any drug, at all,” she said in an interview. “If you don’t get the drug into the target organ, the lungs, you don’t get symptom relief, nor disease remission. Actually, most patients use their devices incorrectly, and most healthcare professionals can’t demonstrate correct delivery technique. At the pharmacy, you’re unlikely to see a real pharmacist, and more likely to see just a cashier. No other product that I know of has offered that degree of sophistication in terms of the different steps of inhaler technique.”
CONNECT2: Better Asthma Control at 24 Weeks
Benefits in asthma control for the Digihaler System have been confirmed recently in clinical research. The CONNECT2 trial compared asthma control with the Digihaler System (DS) versus standard of care (SoC) in patients 13 years or older with uncontrolled asthma (Asthma Control Test [ACT] score < 19). Investigators randomized them open-label 4:3 to the DS (n = 210) or SoC (n = 181) for 24 weeks. Primary endpoint assessment of the proportion of patients achieving well-controlled asthma (ie, an ACT score ≥ 20 or increase from baseline of ≥ 3 units at week 24) revealed an 88.7% higher probability that DS patients would have greater odds of achieving asthma control improvement at week 24, with 35% higher odds of asthma control in the DS group. Also, clinician-participant interactions, mostly addressing poor inhaler technique, were more frequent in the DS group. Six-month adherence was good (68.6%, vs 79.2% at month 1), and reliever use at month 6 was decreased by 38.2% from baseline in the DS group.
Lack of Inhaler Uptake
“It made me sad to hear that it was going away. It’s a device that should have been useful,” Dr. George said, “but the wonderful features that could have come at an individual level or at a population health level just were never realized. I don’t think it was from lack of trying on the company’s part, but when it was launched, insurance companies wouldn’t pay the extra cost that comes with having an integrated electronic monitoring device. They weren’t convinced that the return on investment down the road from improved disease control and fewer very expensive acute hospitalizations was worth it. So the uptake was poor.”
Where does this leave patients? Mr. Mendez stated, “It is imperative that people using Teva’s Digihaler products to treat their asthma reach out to their provider now to determine the best alternative treatment options. Unfortunately, when GSK discontinued Flovent, some people using that inhaler were transitioned to the ArmonAir Digihaler. Also, some formularies do not cover the authorized generic of Flovent, forcing patients to change treatment.”
The AAFA press release of April 15 lists in detail available alternatives to Teva’s discontinued devices, naming quick-relief inhalers and inhaled corticosteroids, noting where dosing, devices, or active ingredients are at variance from the Teva products. The AAFA document also lists and describes inhaler device types (metered dose inhaler, breath actuated inhaler, dry powder inhaler and soft mist inhaler) and their differences in detail.
On the heels of the January 2024 announcement by GlaxoSmithKline that its Flovent inhalers are being discontinued, Teva’s recent announcement that it will discontinue U.S. distribution of its Digihaler® products is adding concern and complication to patients’ and physicians’ efforts to manage asthma symptoms.
“It is unfortunate to hear that more asthma inhalers are being discontinued,” Asthma and Allergy Foundation of America (AAFA) President and CEO Kenneth Mendez, said in an interview. The impact of Teva’s June 1 discontinuations of its Digihaler portfolio (ProAir Digihaler, AirDuo Digihaler, and ArmonAir Digihaler), he added, is only partially softened by Teva’s reassurance that its still-available RespiClick devices deliver the same drug formulations via the same devices as the ProAir and AirDuo products — because they lack the innovative digital component. “The Teva Digihaler portfolio had offered an innovative approach to encourage adherence to treatment by integrating a digital solution with an inhaler.”
Digital App Companion to Inhaler
The digital components of the AirDuo Digihaler (fluticasone propionate and salmeterol) inhalation powder and ArmonAir Digihaler (fluticasone propionate) inhalation powder, both maintenance inhalers for patients 12-years or older with asthma, include built-in Bluetooth® wireless technology that connects to a companion mobile app. Their triggers for recording data on inhaler use are either the opening of the inhaler cap or the patient’s inhalation. The devices detect, record, and store data on inhaler use and peak inspiratory flow.
Also, they can remind the patient as to how often the devices have been used, measure inspiratory flow rates, and indicate when inhalation technique may need improvement. Data are then directly sent to the Digihaler app via Bluetooth technology, giving discretion to patients as to whether or not their data will be shared with health care providers.
When patients share their digital inhaler device-recorded data, Teva sources state, providers can more objectively assess the patients’ inhaler use patterns and habits to determine if they are using them as prescribed, and through inspiratory flow rates, judge whether or not patients may need inhaler technique coaching.
Possibility for Objective Data
“I was excited about the Digihaler when it was first launched,” said Maureen George, RN, PhD, of Columbia University School of Nursing, New York, “because it gave very good objective feedback on patients’ inhaler technique through peak inspiratory flow. It showed whether they missed doses or if there were patterns of increased use with increased symptoms.
“Inhaled medications are the only therapy that — if you inaccurately administer them — you don’t actually get any drug, at all,” she said in an interview. “If you don’t get the drug into the target organ, the lungs, you don’t get symptom relief, nor disease remission. Actually, most patients use their devices incorrectly, and most healthcare professionals can’t demonstrate correct delivery technique. At the pharmacy, you’re unlikely to see a real pharmacist, and more likely to see just a cashier. No other product that I know of has offered that degree of sophistication in terms of the different steps of inhaler technique.”
CONNECT2: Better Asthma Control at 24 Weeks
Benefits in asthma control for the Digihaler System have been confirmed recently in clinical research. The CONNECT2 trial compared asthma control with the Digihaler System (DS) versus standard of care (SoC) in patients 13 years or older with uncontrolled asthma (Asthma Control Test [ACT] score < 19). Investigators randomized them open-label 4:3 to the DS (n = 210) or SoC (n = 181) for 24 weeks. Primary endpoint assessment of the proportion of patients achieving well-controlled asthma (ie, an ACT score ≥ 20 or increase from baseline of ≥ 3 units at week 24) revealed an 88.7% higher probability that DS patients would have greater odds of achieving asthma control improvement at week 24, with 35% higher odds of asthma control in the DS group. Also, clinician-participant interactions, mostly addressing poor inhaler technique, were more frequent in the DS group. Six-month adherence was good (68.6%, vs 79.2% at month 1), and reliever use at month 6 was decreased by 38.2% from baseline in the DS group.
Lack of Inhaler Uptake
“It made me sad to hear that it was going away. It’s a device that should have been useful,” Dr. George said, “but the wonderful features that could have come at an individual level or at a population health level just were never realized. I don’t think it was from lack of trying on the company’s part, but when it was launched, insurance companies wouldn’t pay the extra cost that comes with having an integrated electronic monitoring device. They weren’t convinced that the return on investment down the road from improved disease control and fewer very expensive acute hospitalizations was worth it. So the uptake was poor.”
Where does this leave patients? Mr. Mendez stated, “It is imperative that people using Teva’s Digihaler products to treat their asthma reach out to their provider now to determine the best alternative treatment options. Unfortunately, when GSK discontinued Flovent, some people using that inhaler were transitioned to the ArmonAir Digihaler. Also, some formularies do not cover the authorized generic of Flovent, forcing patients to change treatment.”
The AAFA press release of April 15 lists in detail available alternatives to Teva’s discontinued devices, naming quick-relief inhalers and inhaled corticosteroids, noting where dosing, devices, or active ingredients are at variance from the Teva products. The AAFA document also lists and describes inhaler device types (metered dose inhaler, breath actuated inhaler, dry powder inhaler and soft mist inhaler) and their differences in detail.
Both Promise and Concern for OSA and CPAP with GLP-1s
Will the weight reduction success with glucagon-like peptide-1 (GLP-1) agonists translate into strong reductions in obstructive sleep apnea (OSA)? Will those potential OSA benefits obviate the need in many for continuous positive airway pressure (CPAP)?
“I think it’s a game changer for helping people who are overweight or obese,” Samuel T. Kuna, MD, chief of sleep medicine at the Corporal Michael J. Crescenz VA Medical Center in Philadelphia, said in an interview with CHEST Physician. “I think we’re just starting out on a very exciting new era. We finally have quite effective treatments for this population.” Dr. Kuna’s Sleep AHEAD (Action for Health in Diabetes) 2021 study (doi: 10.1164/rccm.201912-2511OC) found that participants with OSA and type 2 diabetes mellitus receiving intensive lifestyle interventions for weight loss had reduced OSA severity at 10 years, and that OSA remission at 10 years was more common with intensive lifestyle intervention than with diabetes support and education.
Potential for OSA impact
In a JAMA Network Open/Pulmonary Medicine article on a 2022 study (doi: 10.1001/jamanetworkopen.2022.8212) conducted among 89 Spanish male adults with moderate to severe OSA and body mass index of 25 or greater, participants received CPAP therapy with or without 8 weeks of weight loss and lifestyle intervention. The primary endpoint of apnea-hypopnea index at 6 months showed the intervention to yield “clinically meaningful and sustainable improvements in OSA.”
Dr. Kuna stated, “I don’t think these [weight loss] agents eliminate the importance of behavioral modification, of changing diet, of reducing highly processed foods and maintaining a healthy lifestyle.” He acknowledged, however, that behavioral endeavors have been in general disappointing with respect to patients’ ability to achieve weight loss. “These medicines really open up a new strategy to help patients do that,” he added.
Dr. Kuna pointed to a recent (2023) Grunstein et al. perspective article (doi: 10.1093/sleep/zsad224) published in Sleep citing phase 3 trial results showing placebo-subtracted weight loss percentages. With subcutaneous (SC) semaglutide 2.4 mg they were 12.6% in patients with obesity or overweight with one or more weight-related comorbidities (but not type 2 diabetes), and 17.8% with tirzepatide (15 mg, SC, weekly), a combination GLP-1 agonist and glucose-dependent insulinotropic polypeptide agonist, in a similar population. The authors stated, “These new agents, provided they are available to persons who need them most — who are often socioeconomically disadvantaged — could revolutionize the management of obesity and its many complications, including OSA.” Grunstein et al. also, noted that the number of studies showing improvement in cardiometabolic outcomes (eg, blood pressure) with pre-incretin OSA therapies are “minimal.” They underscored, however, the need for risk/benefit/cost-effectiveness data on incretin therapies, and cited evidence that withdrawal from incretin treatment brings back weight gain and adverse cardiometabolic factors. They also indicated key areas of uncertainty requiring research: gender-based response differences to incretins (women predominate in most weight loss studies, but OSA is more common in men), how CPAP users will adapt to incretin OSA benefits, direct comparisons of impact on OSA with incretins vs mechanical therapy, and understanding which target populations derive the most benefit with incretin therapies.
Despite the unanswered questions, the direction was unequivocally clear for Grunstein et al.: “Ultimately, the focus must shift away from mechanical therapy for obesity-related OSA towards weight loss, the latter which is likely to produce multiple health outcome improvements that are superior, including all-cause mortality.”
Dr. Kuna agreed with the Sleep article authors that one implication of this “incretin revolution” is that sleep physicians will have to broaden their skills to encompass obesity management. “As the field evolves, perhaps we should start training our fellows about how to manage these patients,” Dr. Kuna said.
Significant impact on OSA and CPAP
“Obesity is a risk factor for sleep apnea,” stated Saadia A. Faiz, MD, FCCP, professor, Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, “so with increased use of these GLP-1 agents for weight reduction, we would anticipate a significant impact on both OSA severity and need for CPAP.” Speaking in a CHEST Physician interview and referring to the Kuna et al. study, she stated, “Since cessation of the drug can lead to rebound weight gain, the emphasis on healthy eating and exercise is crucial to management.” Dr. Faiz said further, “It’s important to note that there are other weight-independent mechanisms for OSA, including upper airway anatomy, mechanisms that modulate upper airway stability, chemoreceptor sensitivity, visceral adiposity, neuroendocrine control, sleep quality, and other aspects of OSA pathophysiology yet to be discovered.”
Cost an obstacle for some
“For many insurances, criteria for coverage include obesity and prediabetes based on HbA1c. For some not meeting requirements, they will have to pay out of pocket,” Dr. Faiz said. She pointed to a Respirology (doi: 10.1111/resp.14545) commentary in which Garun S. Hamilton, MBBS, PhD, and Bradley A. Edwards, PhD, underscored the nearly 1 billion people worldwide with OSA, most of whom are overweight or obese. “GLP-1 agonists are so effective that they have become a worldwide phenomenon. The high cost of the medications combined with the high prevalence of OSA means that there is no way that universal healthcare funding schemes can afford these medications, unless strict criteria are in place to prioritize those who can gain subsidized access and/or a duration of use limit is in place,” they stated. “This will no doubt exacerbate inequities in healthcare access and outcome between those from lower versus higher socioeconomic populations, as the attributable benefit from GLP-1 agonists is likely to be dependent on a patient’s ability to afford them.”
Beyond health equity concerns
The evidence for clinically relevant reductions in weight and resultant lowering of other adverse risk factors supports a wide embrace of Ozempic-type drugs. Standing alongside, however, are the cautionary pleas of nutrition/lifestyle-focused health advocates. They urge that prescriptions for nonpharmacological strategies that promote better sleep, healthier food choices, and more exercise need sharper highlighting and strong incentivizing.
Dr. Faiz said, “The availability and consumption of ultra-processed foods can impact food intake and weight. Specifically, in a small study of 20 inpatient adults admitted to the NIH Clinical Center randomized to either ultra-processed or unprocessed diets for 14 days, increased caloric intake and weight gain were found in the ultra-processed cohort.” In the study Dr. Faiz cited (doi: 10.1016/j.cmet.2019.05.008), meals were matched for calories, energy density, macronutrients, sugar, sodium, and fiber. Subjects were instructed to consume as much or as little as desired. Analysis showed a 4-pound weight difference between groups within 2 weeks: The ultra-processed cohort had taken in an extra 500 calories a day and had gained weight (0.9 ± 0.3 kg [P = .009]) and body fat while the unprocessed food group lost weight (0.9 ± 0.3 kg [P = .007]) and body fat.
“Thus, the type of foods we opt for can also have significant impact,” Dr. Faiz stated.
Dr. Faiz and Dr. Kuna said they had no conflicts of interest to disclose.
Will the weight reduction success with glucagon-like peptide-1 (GLP-1) agonists translate into strong reductions in obstructive sleep apnea (OSA)? Will those potential OSA benefits obviate the need in many for continuous positive airway pressure (CPAP)?
“I think it’s a game changer for helping people who are overweight or obese,” Samuel T. Kuna, MD, chief of sleep medicine at the Corporal Michael J. Crescenz VA Medical Center in Philadelphia, said in an interview with CHEST Physician. “I think we’re just starting out on a very exciting new era. We finally have quite effective treatments for this population.” Dr. Kuna’s Sleep AHEAD (Action for Health in Diabetes) 2021 study (doi: 10.1164/rccm.201912-2511OC) found that participants with OSA and type 2 diabetes mellitus receiving intensive lifestyle interventions for weight loss had reduced OSA severity at 10 years, and that OSA remission at 10 years was more common with intensive lifestyle intervention than with diabetes support and education.
Potential for OSA impact
In a JAMA Network Open/Pulmonary Medicine article on a 2022 study (doi: 10.1001/jamanetworkopen.2022.8212) conducted among 89 Spanish male adults with moderate to severe OSA and body mass index of 25 or greater, participants received CPAP therapy with or without 8 weeks of weight loss and lifestyle intervention. The primary endpoint of apnea-hypopnea index at 6 months showed the intervention to yield “clinically meaningful and sustainable improvements in OSA.”
Dr. Kuna stated, “I don’t think these [weight loss] agents eliminate the importance of behavioral modification, of changing diet, of reducing highly processed foods and maintaining a healthy lifestyle.” He acknowledged, however, that behavioral endeavors have been in general disappointing with respect to patients’ ability to achieve weight loss. “These medicines really open up a new strategy to help patients do that,” he added.
Dr. Kuna pointed to a recent (2023) Grunstein et al. perspective article (doi: 10.1093/sleep/zsad224) published in Sleep citing phase 3 trial results showing placebo-subtracted weight loss percentages. With subcutaneous (SC) semaglutide 2.4 mg they were 12.6% in patients with obesity or overweight with one or more weight-related comorbidities (but not type 2 diabetes), and 17.8% with tirzepatide (15 mg, SC, weekly), a combination GLP-1 agonist and glucose-dependent insulinotropic polypeptide agonist, in a similar population. The authors stated, “These new agents, provided they are available to persons who need them most — who are often socioeconomically disadvantaged — could revolutionize the management of obesity and its many complications, including OSA.” Grunstein et al. also, noted that the number of studies showing improvement in cardiometabolic outcomes (eg, blood pressure) with pre-incretin OSA therapies are “minimal.” They underscored, however, the need for risk/benefit/cost-effectiveness data on incretin therapies, and cited evidence that withdrawal from incretin treatment brings back weight gain and adverse cardiometabolic factors. They also indicated key areas of uncertainty requiring research: gender-based response differences to incretins (women predominate in most weight loss studies, but OSA is more common in men), how CPAP users will adapt to incretin OSA benefits, direct comparisons of impact on OSA with incretins vs mechanical therapy, and understanding which target populations derive the most benefit with incretin therapies.
Despite the unanswered questions, the direction was unequivocally clear for Grunstein et al.: “Ultimately, the focus must shift away from mechanical therapy for obesity-related OSA towards weight loss, the latter which is likely to produce multiple health outcome improvements that are superior, including all-cause mortality.”
Dr. Kuna agreed with the Sleep article authors that one implication of this “incretin revolution” is that sleep physicians will have to broaden their skills to encompass obesity management. “As the field evolves, perhaps we should start training our fellows about how to manage these patients,” Dr. Kuna said.
Significant impact on OSA and CPAP
“Obesity is a risk factor for sleep apnea,” stated Saadia A. Faiz, MD, FCCP, professor, Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, “so with increased use of these GLP-1 agents for weight reduction, we would anticipate a significant impact on both OSA severity and need for CPAP.” Speaking in a CHEST Physician interview and referring to the Kuna et al. study, she stated, “Since cessation of the drug can lead to rebound weight gain, the emphasis on healthy eating and exercise is crucial to management.” Dr. Faiz said further, “It’s important to note that there are other weight-independent mechanisms for OSA, including upper airway anatomy, mechanisms that modulate upper airway stability, chemoreceptor sensitivity, visceral adiposity, neuroendocrine control, sleep quality, and other aspects of OSA pathophysiology yet to be discovered.”
Cost an obstacle for some
“For many insurances, criteria for coverage include obesity and prediabetes based on HbA1c. For some not meeting requirements, they will have to pay out of pocket,” Dr. Faiz said. She pointed to a Respirology (doi: 10.1111/resp.14545) commentary in which Garun S. Hamilton, MBBS, PhD, and Bradley A. Edwards, PhD, underscored the nearly 1 billion people worldwide with OSA, most of whom are overweight or obese. “GLP-1 agonists are so effective that they have become a worldwide phenomenon. The high cost of the medications combined with the high prevalence of OSA means that there is no way that universal healthcare funding schemes can afford these medications, unless strict criteria are in place to prioritize those who can gain subsidized access and/or a duration of use limit is in place,” they stated. “This will no doubt exacerbate inequities in healthcare access and outcome between those from lower versus higher socioeconomic populations, as the attributable benefit from GLP-1 agonists is likely to be dependent on a patient’s ability to afford them.”
Beyond health equity concerns
The evidence for clinically relevant reductions in weight and resultant lowering of other adverse risk factors supports a wide embrace of Ozempic-type drugs. Standing alongside, however, are the cautionary pleas of nutrition/lifestyle-focused health advocates. They urge that prescriptions for nonpharmacological strategies that promote better sleep, healthier food choices, and more exercise need sharper highlighting and strong incentivizing.
Dr. Faiz said, “The availability and consumption of ultra-processed foods can impact food intake and weight. Specifically, in a small study of 20 inpatient adults admitted to the NIH Clinical Center randomized to either ultra-processed or unprocessed diets for 14 days, increased caloric intake and weight gain were found in the ultra-processed cohort.” In the study Dr. Faiz cited (doi: 10.1016/j.cmet.2019.05.008), meals were matched for calories, energy density, macronutrients, sugar, sodium, and fiber. Subjects were instructed to consume as much or as little as desired. Analysis showed a 4-pound weight difference between groups within 2 weeks: The ultra-processed cohort had taken in an extra 500 calories a day and had gained weight (0.9 ± 0.3 kg [P = .009]) and body fat while the unprocessed food group lost weight (0.9 ± 0.3 kg [P = .007]) and body fat.
“Thus, the type of foods we opt for can also have significant impact,” Dr. Faiz stated.
Dr. Faiz and Dr. Kuna said they had no conflicts of interest to disclose.
Will the weight reduction success with glucagon-like peptide-1 (GLP-1) agonists translate into strong reductions in obstructive sleep apnea (OSA)? Will those potential OSA benefits obviate the need in many for continuous positive airway pressure (CPAP)?
“I think it’s a game changer for helping people who are overweight or obese,” Samuel T. Kuna, MD, chief of sleep medicine at the Corporal Michael J. Crescenz VA Medical Center in Philadelphia, said in an interview with CHEST Physician. “I think we’re just starting out on a very exciting new era. We finally have quite effective treatments for this population.” Dr. Kuna’s Sleep AHEAD (Action for Health in Diabetes) 2021 study (doi: 10.1164/rccm.201912-2511OC) found that participants with OSA and type 2 diabetes mellitus receiving intensive lifestyle interventions for weight loss had reduced OSA severity at 10 years, and that OSA remission at 10 years was more common with intensive lifestyle intervention than with diabetes support and education.
Potential for OSA impact
In a JAMA Network Open/Pulmonary Medicine article on a 2022 study (doi: 10.1001/jamanetworkopen.2022.8212) conducted among 89 Spanish male adults with moderate to severe OSA and body mass index of 25 or greater, participants received CPAP therapy with or without 8 weeks of weight loss and lifestyle intervention. The primary endpoint of apnea-hypopnea index at 6 months showed the intervention to yield “clinically meaningful and sustainable improvements in OSA.”
Dr. Kuna stated, “I don’t think these [weight loss] agents eliminate the importance of behavioral modification, of changing diet, of reducing highly processed foods and maintaining a healthy lifestyle.” He acknowledged, however, that behavioral endeavors have been in general disappointing with respect to patients’ ability to achieve weight loss. “These medicines really open up a new strategy to help patients do that,” he added.
Dr. Kuna pointed to a recent (2023) Grunstein et al. perspective article (doi: 10.1093/sleep/zsad224) published in Sleep citing phase 3 trial results showing placebo-subtracted weight loss percentages. With subcutaneous (SC) semaglutide 2.4 mg they were 12.6% in patients with obesity or overweight with one or more weight-related comorbidities (but not type 2 diabetes), and 17.8% with tirzepatide (15 mg, SC, weekly), a combination GLP-1 agonist and glucose-dependent insulinotropic polypeptide agonist, in a similar population. The authors stated, “These new agents, provided they are available to persons who need them most — who are often socioeconomically disadvantaged — could revolutionize the management of obesity and its many complications, including OSA.” Grunstein et al. also, noted that the number of studies showing improvement in cardiometabolic outcomes (eg, blood pressure) with pre-incretin OSA therapies are “minimal.” They underscored, however, the need for risk/benefit/cost-effectiveness data on incretin therapies, and cited evidence that withdrawal from incretin treatment brings back weight gain and adverse cardiometabolic factors. They also indicated key areas of uncertainty requiring research: gender-based response differences to incretins (women predominate in most weight loss studies, but OSA is more common in men), how CPAP users will adapt to incretin OSA benefits, direct comparisons of impact on OSA with incretins vs mechanical therapy, and understanding which target populations derive the most benefit with incretin therapies.
Despite the unanswered questions, the direction was unequivocally clear for Grunstein et al.: “Ultimately, the focus must shift away from mechanical therapy for obesity-related OSA towards weight loss, the latter which is likely to produce multiple health outcome improvements that are superior, including all-cause mortality.”
Dr. Kuna agreed with the Sleep article authors that one implication of this “incretin revolution” is that sleep physicians will have to broaden their skills to encompass obesity management. “As the field evolves, perhaps we should start training our fellows about how to manage these patients,” Dr. Kuna said.
Significant impact on OSA and CPAP
“Obesity is a risk factor for sleep apnea,” stated Saadia A. Faiz, MD, FCCP, professor, Department of Pulmonary Medicine, University of Texas MD Anderson Cancer Center, Houston, “so with increased use of these GLP-1 agents for weight reduction, we would anticipate a significant impact on both OSA severity and need for CPAP.” Speaking in a CHEST Physician interview and referring to the Kuna et al. study, she stated, “Since cessation of the drug can lead to rebound weight gain, the emphasis on healthy eating and exercise is crucial to management.” Dr. Faiz said further, “It’s important to note that there are other weight-independent mechanisms for OSA, including upper airway anatomy, mechanisms that modulate upper airway stability, chemoreceptor sensitivity, visceral adiposity, neuroendocrine control, sleep quality, and other aspects of OSA pathophysiology yet to be discovered.”
Cost an obstacle for some
“For many insurances, criteria for coverage include obesity and prediabetes based on HbA1c. For some not meeting requirements, they will have to pay out of pocket,” Dr. Faiz said. She pointed to a Respirology (doi: 10.1111/resp.14545) commentary in which Garun S. Hamilton, MBBS, PhD, and Bradley A. Edwards, PhD, underscored the nearly 1 billion people worldwide with OSA, most of whom are overweight or obese. “GLP-1 agonists are so effective that they have become a worldwide phenomenon. The high cost of the medications combined with the high prevalence of OSA means that there is no way that universal healthcare funding schemes can afford these medications, unless strict criteria are in place to prioritize those who can gain subsidized access and/or a duration of use limit is in place,” they stated. “This will no doubt exacerbate inequities in healthcare access and outcome between those from lower versus higher socioeconomic populations, as the attributable benefit from GLP-1 agonists is likely to be dependent on a patient’s ability to afford them.”
Beyond health equity concerns
The evidence for clinically relevant reductions in weight and resultant lowering of other adverse risk factors supports a wide embrace of Ozempic-type drugs. Standing alongside, however, are the cautionary pleas of nutrition/lifestyle-focused health advocates. They urge that prescriptions for nonpharmacological strategies that promote better sleep, healthier food choices, and more exercise need sharper highlighting and strong incentivizing.
Dr. Faiz said, “The availability and consumption of ultra-processed foods can impact food intake and weight. Specifically, in a small study of 20 inpatient adults admitted to the NIH Clinical Center randomized to either ultra-processed or unprocessed diets for 14 days, increased caloric intake and weight gain were found in the ultra-processed cohort.” In the study Dr. Faiz cited (doi: 10.1016/j.cmet.2019.05.008), meals were matched for calories, energy density, macronutrients, sugar, sodium, and fiber. Subjects were instructed to consume as much or as little as desired. Analysis showed a 4-pound weight difference between groups within 2 weeks: The ultra-processed cohort had taken in an extra 500 calories a day and had gained weight (0.9 ± 0.3 kg [P = .009]) and body fat while the unprocessed food group lost weight (0.9 ± 0.3 kg [P = .007]) and body fat.
“Thus, the type of foods we opt for can also have significant impact,” Dr. Faiz stated.
Dr. Faiz and Dr. Kuna said they had no conflicts of interest to disclose.
Noninvasive AI-Driven Tool Speeds Idiopathic Pulmonary Fibrosis Diagnosis
When clinicians suspect lung fibrosis and particularly its most devastating form, idiopathic pulmonary fibrosis (IPF), a noninvasive artificial intelligence (AI)-driven digital diagnostic tool may identify subtype classifications facilitating proper treatment at earlier disease stages. On January 16, 2024, the tool, Simultaneously, the American Medical Association adopted relevant CPT [Current Procedural Terminology] billing codes, according to an IMVARIA Inc. press release.
Diagnosis and treatment of the lung inflammation and fibrosis that drive IPF lung function decline are often long delayed, Joshua Reicher, MD, CEO of IMVARIA Inc. and an adjunct clinical professor at Stanford (California) University said in an interview for CHEST Physician.
“There are multiple challenges with this somewhat uncommon condition. Part of the frequent delays in diagnosis is the lack of access to local experts. Another part is vague presenting symptoms like general fatigue, for example, which can have an overlap with a lot of other conditions. The published median average delay in diagnosis after first presenting symptoms is about 2.2 years. But it’s often longer.”
Determining Type of Lung Fibrosis
Conventional diagnosis based on lab tests for inflammatory biomarkers and extensive clinical history is “fairly straightforward,” Dr. Reicher continued, for determining that a patient has some form of lung fibrosis. “The critical element is to find out what type of lung fibrosis and then begin appropriate therapy. The literature lists about 200 different subtypes, but the top 5 make up the majority of cases. The focus with Fibresolve is on improving noninvasive sensitivity, especially for the cases that are less straightforward, but rather indeterminate and therefore particularly challenging,” Dr. Reicher stated.
Will adjunctive diagnostic use of Fibresolve obviate the need for invasive confirmatory tests? Dr. Reicher was cautious. “We like to be thoughtful about our positioning of artificial intelligence and prefer to say that it puts complementary information in the hands of the physician. It’s really up to the clinicians to decide if they have sufficient information to avoid that biopsy.” The uniqueness of Fibresolve, Dr. Reicher pointed out, is that it is widely accessible and does not require hyper-specialized providers. “You can use it at any center that has standard CT scans.”
Reducing Burden on Physicians
An essential feature of Fibresolve use is that its software analysis is conducted centrally. “Part of our goal is to reduce the burden on the clinicians as much as possible, and we try to offload as much of the technical work from them as we can.”
The clinicians send images to IMVARIA Inc. (typically electronically) where they are processed rapidly, and a report is generated with outputs identifying the specific classification, perhaps with one indicating that the findings are suggestive of IPF. Dr. Reicher observed that the Fibresolve’s deep learning algorithm was trained on thousands of cases. “We’re very confident in the results that it puts out,” he said.
“We’re very excited. This is the first FDA-authorized diagnostic tool of any type in lung fibrosis. We really think this supports doctors and patients in areas where there’s a high unmet need,” Dr. Reicher said.
IMVARIA is next developing, in collaboration with the Mayo Clinic, a Fibresolve application for use in lung cancer, he said.
When clinicians suspect lung fibrosis and particularly its most devastating form, idiopathic pulmonary fibrosis (IPF), a noninvasive artificial intelligence (AI)-driven digital diagnostic tool may identify subtype classifications facilitating proper treatment at earlier disease stages. On January 16, 2024, the tool, Simultaneously, the American Medical Association adopted relevant CPT [Current Procedural Terminology] billing codes, according to an IMVARIA Inc. press release.
Diagnosis and treatment of the lung inflammation and fibrosis that drive IPF lung function decline are often long delayed, Joshua Reicher, MD, CEO of IMVARIA Inc. and an adjunct clinical professor at Stanford (California) University said in an interview for CHEST Physician.
“There are multiple challenges with this somewhat uncommon condition. Part of the frequent delays in diagnosis is the lack of access to local experts. Another part is vague presenting symptoms like general fatigue, for example, which can have an overlap with a lot of other conditions. The published median average delay in diagnosis after first presenting symptoms is about 2.2 years. But it’s often longer.”
Determining Type of Lung Fibrosis
Conventional diagnosis based on lab tests for inflammatory biomarkers and extensive clinical history is “fairly straightforward,” Dr. Reicher continued, for determining that a patient has some form of lung fibrosis. “The critical element is to find out what type of lung fibrosis and then begin appropriate therapy. The literature lists about 200 different subtypes, but the top 5 make up the majority of cases. The focus with Fibresolve is on improving noninvasive sensitivity, especially for the cases that are less straightforward, but rather indeterminate and therefore particularly challenging,” Dr. Reicher stated.
Will adjunctive diagnostic use of Fibresolve obviate the need for invasive confirmatory tests? Dr. Reicher was cautious. “We like to be thoughtful about our positioning of artificial intelligence and prefer to say that it puts complementary information in the hands of the physician. It’s really up to the clinicians to decide if they have sufficient information to avoid that biopsy.” The uniqueness of Fibresolve, Dr. Reicher pointed out, is that it is widely accessible and does not require hyper-specialized providers. “You can use it at any center that has standard CT scans.”
Reducing Burden on Physicians
An essential feature of Fibresolve use is that its software analysis is conducted centrally. “Part of our goal is to reduce the burden on the clinicians as much as possible, and we try to offload as much of the technical work from them as we can.”
The clinicians send images to IMVARIA Inc. (typically electronically) where they are processed rapidly, and a report is generated with outputs identifying the specific classification, perhaps with one indicating that the findings are suggestive of IPF. Dr. Reicher observed that the Fibresolve’s deep learning algorithm was trained on thousands of cases. “We’re very confident in the results that it puts out,” he said.
“We’re very excited. This is the first FDA-authorized diagnostic tool of any type in lung fibrosis. We really think this supports doctors and patients in areas where there’s a high unmet need,” Dr. Reicher said.
IMVARIA is next developing, in collaboration with the Mayo Clinic, a Fibresolve application for use in lung cancer, he said.
When clinicians suspect lung fibrosis and particularly its most devastating form, idiopathic pulmonary fibrosis (IPF), a noninvasive artificial intelligence (AI)-driven digital diagnostic tool may identify subtype classifications facilitating proper treatment at earlier disease stages. On January 16, 2024, the tool, Simultaneously, the American Medical Association adopted relevant CPT [Current Procedural Terminology] billing codes, according to an IMVARIA Inc. press release.
Diagnosis and treatment of the lung inflammation and fibrosis that drive IPF lung function decline are often long delayed, Joshua Reicher, MD, CEO of IMVARIA Inc. and an adjunct clinical professor at Stanford (California) University said in an interview for CHEST Physician.
“There are multiple challenges with this somewhat uncommon condition. Part of the frequent delays in diagnosis is the lack of access to local experts. Another part is vague presenting symptoms like general fatigue, for example, which can have an overlap with a lot of other conditions. The published median average delay in diagnosis after first presenting symptoms is about 2.2 years. But it’s often longer.”
Determining Type of Lung Fibrosis
Conventional diagnosis based on lab tests for inflammatory biomarkers and extensive clinical history is “fairly straightforward,” Dr. Reicher continued, for determining that a patient has some form of lung fibrosis. “The critical element is to find out what type of lung fibrosis and then begin appropriate therapy. The literature lists about 200 different subtypes, but the top 5 make up the majority of cases. The focus with Fibresolve is on improving noninvasive sensitivity, especially for the cases that are less straightforward, but rather indeterminate and therefore particularly challenging,” Dr. Reicher stated.
Will adjunctive diagnostic use of Fibresolve obviate the need for invasive confirmatory tests? Dr. Reicher was cautious. “We like to be thoughtful about our positioning of artificial intelligence and prefer to say that it puts complementary information in the hands of the physician. It’s really up to the clinicians to decide if they have sufficient information to avoid that biopsy.” The uniqueness of Fibresolve, Dr. Reicher pointed out, is that it is widely accessible and does not require hyper-specialized providers. “You can use it at any center that has standard CT scans.”
Reducing Burden on Physicians
An essential feature of Fibresolve use is that its software analysis is conducted centrally. “Part of our goal is to reduce the burden on the clinicians as much as possible, and we try to offload as much of the technical work from them as we can.”
The clinicians send images to IMVARIA Inc. (typically electronically) where they are processed rapidly, and a report is generated with outputs identifying the specific classification, perhaps with one indicating that the findings are suggestive of IPF. Dr. Reicher observed that the Fibresolve’s deep learning algorithm was trained on thousands of cases. “We’re very confident in the results that it puts out,” he said.
“We’re very excited. This is the first FDA-authorized diagnostic tool of any type in lung fibrosis. We really think this supports doctors and patients in areas where there’s a high unmet need,” Dr. Reicher said.
IMVARIA is next developing, in collaboration with the Mayo Clinic, a Fibresolve application for use in lung cancer, he said.
Flovent Brand Discontinuation Likely Smooth for Many, Difficult for Some
A recent alert posted on the Asthma and Allergy Foundation of America (AAFA) website blog announced, “Flovent HFA and Flovent Diskus Asthma Medicine Being Discontinued.” A further heading positioned next to images of the two red inhaler devices stated: “Generic versions of the same medicines and devices are available but you need to check your insurance.” While few, it is generally thought, will have trouble finding suitable alternatives, the warning captured the reality descending upon some individual asthma sufferers whose insurance coverage may need tweaking at the very least, or at worst may be lacking.
The AAFA blog included a GSK (GlaxoSmithKline) November 2023 statement to AAFA regarding the brand name FLOVENT discontinuation. It noted the launch of an authorized Flovent HFA (fluticasone propionate inhalation aerosol) generic in May 2022 and a planned (October 2023) launch of an authorized generic for Flovent Diskus (fluticasone propionate inhalation powder) as “part of our commitment to be ambitious for patients.” The GSK statement continues: “These GSK manufactured authorized generics will provide patients in the US with potentially lower cost alternatives of these medically important products. We recognize that patients have a number of options in the therapeutic area and therefore remain committed to ensuring the affordability of our medicines.”
GSK will continue to manufacture the authorized generics, but they will be distributed by Prasco LLC.
Medicaid Rebate Cap Removed
As a Forbes article on January 3, 2024, by Joshua Cohen (“New Medicaid Rebate Rule Causes Problems For Asthma Patients On Flovent”) points out, the Flovent January 1, 2024, discontinuation coincided with the removal of the Medicaid rebate cap (American Rescue Plan Medicaid Drug Rebate Program) targeting manufacturers who had previously raised medication prices at rates higher than the inflation rate. The Forbes story notes GoodRx data showing a 47% increase in Flovent price since 2014. The implication is that drug manufacturers could be forced to sell such a drug to Medicaid at a loss because of the rebate cap removal. An authorized generic introduced to the market at a lower price under a private label with no price history, however, would not be subject to the higher Medicaid rebates.
Motivation considerations aside, the fallout for patients may or may not include a lower cost alternative. The authorized generic versions of Flovent HFA and Flovent Diskus are identical to the branded products with respect to the drugs and the devices. The GSK statement expressed hope that most insurance plans will replace the brand name with the authorized generic. The possibility persists, however, that there may be some that do not — resulting in a need to find the right substitute and/or higher out-of-pocket costs.
“Even though some patients may experience some disruption initially in their prescriptions,” Diego J. Maselli, MD, professor and chief, division of pulmonary diseases and critical care, UT Health at San Antonio, Texas, said in an interview, “fortunately, there are quite a few alternatives, and we don’t anticipate significant problems. It will be a wrinkle for some of the patients with regard to coverage, but there are definitely many alternatives that can provide good enough treatment for them.”
Similar alternative inhalers?
The alternatives have their specific properties and qualities, but the vast majority of experts, Dr. Maselli said, consider them to be very similar.
For CAREMARK CVS, a major pharmaceutical benefits manager, the preferred Flovent substitute is Pulmicort Flexhaler, a dry-powder inhaler that contains budesonide rather than fluticasone. While Flovent HF is a metered dose inhaler with a propellant, the Pulmicort device contains budesonide as a dry powder and requires activation through inhalation, which can be problematic for young children, AAFA CEO Kenneth Mendez said in an interview. To address that issue, he said, CVS Caremark is covering the authorized fluticasone metered dose inhaler generic for children under 6 years old. “Those individuals 6 years and older with severe asthma who can’t breathe deeply enough to get the medicine into their lungs will have to work with their doctors to apply for a formulary exception. And that’s a complicated process,” Mr. Mendez observed. “And it can take some time,” he added.
Another key issue highlighted here, he emphasized, is “how complicated this system is.” The U.S. drug pricing ecosystem involves multiple manufacturers, pharmacy benefit managers, insurance companies and their various plans, and federal policies potentially creating situations that may reduce access to critical medicines for patients, Mr. Mendez said. “Some people will be scurrying and scrambling to try to get coverage. The scope of the impact is actually unknown, but we’re going to find out now. As a nonprofit, we monitor social media and we’re listening closely.”
AAFA’s further concern is the rising costs of asthma medications. “It’s the number one thing we hear about as a patient organization,” Mr. Mendez said. On January 9, 2024, AAFA issued a press release praising the previous day’s news item from the U.S. Senate Committee on Health, Education, Labor & Pensions (“Chairman Sanders, Baldwin, Luján, Markey Launch HELP Committee Investigation into Efforts by Pharmaceutical Companies to Manipulate the Price of Asthma Inhalers). In it, Senator Bernie Sanders pointed to the more than 12-fold higher cost in the United States compared with the United Kingdom for GSK’s inhaler combining fluticasone and a beta2 agonist. The Senate HELP Committee has sent letters to the CEOs of the four major inhaler manufacturers (AstraZeneca, Boehringer Ingelheim, GSK, and Teva), stating: “These prices force patients, especially the uninsured and underinsured, to ration doses or abandon their prescriptions altogether. The results are predictable and devastating.”
High costs of inhalers could lead to rationing
AAFA research, the AAFA press release states, confirms that when asthma medicine costs become a barrier to treatment, people with asthma ration or discontinue medication use. The release also includes Mr. Mendez’s plea for a broad national conversation. “We are hopeful the HELP Committee investigation will lead to a national conversation about asthma drug costs and produce action that breaks down barriers to affordable treatment for people with asthma. The bottom line is that cost drives access. We understand the barriers, now it is important to move toward solutions.”
AAFA’s blog advises that when an individual’s insurance plan does not cover the authorized generic and does not offer a formulary exception, other inhaler options include ArmonAir Digihaler and Arnuity Ellipta. Because these are not identical to the authorized generics, individuals should check with their doctors regarding available doses and inhaler types and, if necessary, request training on inhaler use.
“It is really important for people with asthma to continue their asthma control medicines, especially during respiratory illness season.” AAFA urges individuals with asthma who are currently Flovent users to check with their doctors or pharmacists about the best next steps for them.
A recent alert posted on the Asthma and Allergy Foundation of America (AAFA) website blog announced, “Flovent HFA and Flovent Diskus Asthma Medicine Being Discontinued.” A further heading positioned next to images of the two red inhaler devices stated: “Generic versions of the same medicines and devices are available but you need to check your insurance.” While few, it is generally thought, will have trouble finding suitable alternatives, the warning captured the reality descending upon some individual asthma sufferers whose insurance coverage may need tweaking at the very least, or at worst may be lacking.
The AAFA blog included a GSK (GlaxoSmithKline) November 2023 statement to AAFA regarding the brand name FLOVENT discontinuation. It noted the launch of an authorized Flovent HFA (fluticasone propionate inhalation aerosol) generic in May 2022 and a planned (October 2023) launch of an authorized generic for Flovent Diskus (fluticasone propionate inhalation powder) as “part of our commitment to be ambitious for patients.” The GSK statement continues: “These GSK manufactured authorized generics will provide patients in the US with potentially lower cost alternatives of these medically important products. We recognize that patients have a number of options in the therapeutic area and therefore remain committed to ensuring the affordability of our medicines.”
GSK will continue to manufacture the authorized generics, but they will be distributed by Prasco LLC.
Medicaid Rebate Cap Removed
As a Forbes article on January 3, 2024, by Joshua Cohen (“New Medicaid Rebate Rule Causes Problems For Asthma Patients On Flovent”) points out, the Flovent January 1, 2024, discontinuation coincided with the removal of the Medicaid rebate cap (American Rescue Plan Medicaid Drug Rebate Program) targeting manufacturers who had previously raised medication prices at rates higher than the inflation rate. The Forbes story notes GoodRx data showing a 47% increase in Flovent price since 2014. The implication is that drug manufacturers could be forced to sell such a drug to Medicaid at a loss because of the rebate cap removal. An authorized generic introduced to the market at a lower price under a private label with no price history, however, would not be subject to the higher Medicaid rebates.
Motivation considerations aside, the fallout for patients may or may not include a lower cost alternative. The authorized generic versions of Flovent HFA and Flovent Diskus are identical to the branded products with respect to the drugs and the devices. The GSK statement expressed hope that most insurance plans will replace the brand name with the authorized generic. The possibility persists, however, that there may be some that do not — resulting in a need to find the right substitute and/or higher out-of-pocket costs.
“Even though some patients may experience some disruption initially in their prescriptions,” Diego J. Maselli, MD, professor and chief, division of pulmonary diseases and critical care, UT Health at San Antonio, Texas, said in an interview, “fortunately, there are quite a few alternatives, and we don’t anticipate significant problems. It will be a wrinkle for some of the patients with regard to coverage, but there are definitely many alternatives that can provide good enough treatment for them.”
Similar alternative inhalers?
The alternatives have their specific properties and qualities, but the vast majority of experts, Dr. Maselli said, consider them to be very similar.
For CAREMARK CVS, a major pharmaceutical benefits manager, the preferred Flovent substitute is Pulmicort Flexhaler, a dry-powder inhaler that contains budesonide rather than fluticasone. While Flovent HF is a metered dose inhaler with a propellant, the Pulmicort device contains budesonide as a dry powder and requires activation through inhalation, which can be problematic for young children, AAFA CEO Kenneth Mendez said in an interview. To address that issue, he said, CVS Caremark is covering the authorized fluticasone metered dose inhaler generic for children under 6 years old. “Those individuals 6 years and older with severe asthma who can’t breathe deeply enough to get the medicine into their lungs will have to work with their doctors to apply for a formulary exception. And that’s a complicated process,” Mr. Mendez observed. “And it can take some time,” he added.
Another key issue highlighted here, he emphasized, is “how complicated this system is.” The U.S. drug pricing ecosystem involves multiple manufacturers, pharmacy benefit managers, insurance companies and their various plans, and federal policies potentially creating situations that may reduce access to critical medicines for patients, Mr. Mendez said. “Some people will be scurrying and scrambling to try to get coverage. The scope of the impact is actually unknown, but we’re going to find out now. As a nonprofit, we monitor social media and we’re listening closely.”
AAFA’s further concern is the rising costs of asthma medications. “It’s the number one thing we hear about as a patient organization,” Mr. Mendez said. On January 9, 2024, AAFA issued a press release praising the previous day’s news item from the U.S. Senate Committee on Health, Education, Labor & Pensions (“Chairman Sanders, Baldwin, Luján, Markey Launch HELP Committee Investigation into Efforts by Pharmaceutical Companies to Manipulate the Price of Asthma Inhalers). In it, Senator Bernie Sanders pointed to the more than 12-fold higher cost in the United States compared with the United Kingdom for GSK’s inhaler combining fluticasone and a beta2 agonist. The Senate HELP Committee has sent letters to the CEOs of the four major inhaler manufacturers (AstraZeneca, Boehringer Ingelheim, GSK, and Teva), stating: “These prices force patients, especially the uninsured and underinsured, to ration doses or abandon their prescriptions altogether. The results are predictable and devastating.”
High costs of inhalers could lead to rationing
AAFA research, the AAFA press release states, confirms that when asthma medicine costs become a barrier to treatment, people with asthma ration or discontinue medication use. The release also includes Mr. Mendez’s plea for a broad national conversation. “We are hopeful the HELP Committee investigation will lead to a national conversation about asthma drug costs and produce action that breaks down barriers to affordable treatment for people with asthma. The bottom line is that cost drives access. We understand the barriers, now it is important to move toward solutions.”
AAFA’s blog advises that when an individual’s insurance plan does not cover the authorized generic and does not offer a formulary exception, other inhaler options include ArmonAir Digihaler and Arnuity Ellipta. Because these are not identical to the authorized generics, individuals should check with their doctors regarding available doses and inhaler types and, if necessary, request training on inhaler use.
“It is really important for people with asthma to continue their asthma control medicines, especially during respiratory illness season.” AAFA urges individuals with asthma who are currently Flovent users to check with their doctors or pharmacists about the best next steps for them.
A recent alert posted on the Asthma and Allergy Foundation of America (AAFA) website blog announced, “Flovent HFA and Flovent Diskus Asthma Medicine Being Discontinued.” A further heading positioned next to images of the two red inhaler devices stated: “Generic versions of the same medicines and devices are available but you need to check your insurance.” While few, it is generally thought, will have trouble finding suitable alternatives, the warning captured the reality descending upon some individual asthma sufferers whose insurance coverage may need tweaking at the very least, or at worst may be lacking.
The AAFA blog included a GSK (GlaxoSmithKline) November 2023 statement to AAFA regarding the brand name FLOVENT discontinuation. It noted the launch of an authorized Flovent HFA (fluticasone propionate inhalation aerosol) generic in May 2022 and a planned (October 2023) launch of an authorized generic for Flovent Diskus (fluticasone propionate inhalation powder) as “part of our commitment to be ambitious for patients.” The GSK statement continues: “These GSK manufactured authorized generics will provide patients in the US with potentially lower cost alternatives of these medically important products. We recognize that patients have a number of options in the therapeutic area and therefore remain committed to ensuring the affordability of our medicines.”
GSK will continue to manufacture the authorized generics, but they will be distributed by Prasco LLC.
Medicaid Rebate Cap Removed
As a Forbes article on January 3, 2024, by Joshua Cohen (“New Medicaid Rebate Rule Causes Problems For Asthma Patients On Flovent”) points out, the Flovent January 1, 2024, discontinuation coincided with the removal of the Medicaid rebate cap (American Rescue Plan Medicaid Drug Rebate Program) targeting manufacturers who had previously raised medication prices at rates higher than the inflation rate. The Forbes story notes GoodRx data showing a 47% increase in Flovent price since 2014. The implication is that drug manufacturers could be forced to sell such a drug to Medicaid at a loss because of the rebate cap removal. An authorized generic introduced to the market at a lower price under a private label with no price history, however, would not be subject to the higher Medicaid rebates.
Motivation considerations aside, the fallout for patients may or may not include a lower cost alternative. The authorized generic versions of Flovent HFA and Flovent Diskus are identical to the branded products with respect to the drugs and the devices. The GSK statement expressed hope that most insurance plans will replace the brand name with the authorized generic. The possibility persists, however, that there may be some that do not — resulting in a need to find the right substitute and/or higher out-of-pocket costs.
“Even though some patients may experience some disruption initially in their prescriptions,” Diego J. Maselli, MD, professor and chief, division of pulmonary diseases and critical care, UT Health at San Antonio, Texas, said in an interview, “fortunately, there are quite a few alternatives, and we don’t anticipate significant problems. It will be a wrinkle for some of the patients with regard to coverage, but there are definitely many alternatives that can provide good enough treatment for them.”
Similar alternative inhalers?
The alternatives have their specific properties and qualities, but the vast majority of experts, Dr. Maselli said, consider them to be very similar.
For CAREMARK CVS, a major pharmaceutical benefits manager, the preferred Flovent substitute is Pulmicort Flexhaler, a dry-powder inhaler that contains budesonide rather than fluticasone. While Flovent HF is a metered dose inhaler with a propellant, the Pulmicort device contains budesonide as a dry powder and requires activation through inhalation, which can be problematic for young children, AAFA CEO Kenneth Mendez said in an interview. To address that issue, he said, CVS Caremark is covering the authorized fluticasone metered dose inhaler generic for children under 6 years old. “Those individuals 6 years and older with severe asthma who can’t breathe deeply enough to get the medicine into their lungs will have to work with their doctors to apply for a formulary exception. And that’s a complicated process,” Mr. Mendez observed. “And it can take some time,” he added.
Another key issue highlighted here, he emphasized, is “how complicated this system is.” The U.S. drug pricing ecosystem involves multiple manufacturers, pharmacy benefit managers, insurance companies and their various plans, and federal policies potentially creating situations that may reduce access to critical medicines for patients, Mr. Mendez said. “Some people will be scurrying and scrambling to try to get coverage. The scope of the impact is actually unknown, but we’re going to find out now. As a nonprofit, we monitor social media and we’re listening closely.”
AAFA’s further concern is the rising costs of asthma medications. “It’s the number one thing we hear about as a patient organization,” Mr. Mendez said. On January 9, 2024, AAFA issued a press release praising the previous day’s news item from the U.S. Senate Committee on Health, Education, Labor & Pensions (“Chairman Sanders, Baldwin, Luján, Markey Launch HELP Committee Investigation into Efforts by Pharmaceutical Companies to Manipulate the Price of Asthma Inhalers). In it, Senator Bernie Sanders pointed to the more than 12-fold higher cost in the United States compared with the United Kingdom for GSK’s inhaler combining fluticasone and a beta2 agonist. The Senate HELP Committee has sent letters to the CEOs of the four major inhaler manufacturers (AstraZeneca, Boehringer Ingelheim, GSK, and Teva), stating: “These prices force patients, especially the uninsured and underinsured, to ration doses or abandon their prescriptions altogether. The results are predictable and devastating.”
High costs of inhalers could lead to rationing
AAFA research, the AAFA press release states, confirms that when asthma medicine costs become a barrier to treatment, people with asthma ration or discontinue medication use. The release also includes Mr. Mendez’s plea for a broad national conversation. “We are hopeful the HELP Committee investigation will lead to a national conversation about asthma drug costs and produce action that breaks down barriers to affordable treatment for people with asthma. The bottom line is that cost drives access. We understand the barriers, now it is important to move toward solutions.”
AAFA’s blog advises that when an individual’s insurance plan does not cover the authorized generic and does not offer a formulary exception, other inhaler options include ArmonAir Digihaler and Arnuity Ellipta. Because these are not identical to the authorized generics, individuals should check with their doctors regarding available doses and inhaler types and, if necessary, request training on inhaler use.
“It is really important for people with asthma to continue their asthma control medicines, especially during respiratory illness season.” AAFA urges individuals with asthma who are currently Flovent users to check with their doctors or pharmacists about the best next steps for them.
Recurrent Bleeding in Small-Intestinal Angiodysplasia Reduced by Thalidomide
, according to results of a new placebo-controlled trial.
At 1 year follow-up, thalidomide doses of 100 mg/day and 50 mg/day outperformed placebo in reducing by at least 50% the number of bleeding episodes, compared with the year prior to treatment, according to the study published online in the New England Journal of Medicine.
SIA, an increasingly recognized cause of repeat obscure gastrointestinal bleeding and iron-deficiency anemia, is a distinct vascular abnormality in the mucosa and submucosa characterized by focal accumulation of ectatic vessels. It is the most common cause of small intestine bleeding, especially among patients older than 50.
There is a high unmet need among patients with SIA for an effective and relatively safe oral medication, given substantial recurrent bleeding risks following endoscopic or surgical procedures, and only observational studies suggest treatment with somatostatin and octreotide, noted senior author Zhizheng Ge, MD, Shanghai Jiao Tong University, Shanghai, China.
SIA is characterized by dilated and tortuous arterial or venous capillaries between thin-walled and immature veins and capillaries without a smooth-muscle layer. Its pathologic process involves chronic hypoxia and vessel sprouting.
Dr. Ge and colleagues postulated that thalidomide’s ability to decrease the expression of proangiogenic factors and angiogenesis would have a long-lasting ameliorating effect on bleeding episodes of angiodysplasia, and thus a continued benefit with respect to bleeding cessation. Their previous small, single-center, open-label, randomized controlled trial of thalidomide for SIA showed a benefit, but it required larger confirmatory trials.
For their current trial, the researchers explored whether a short treatment period, selected to avoid treatment nonadherence, could have a long-term effect. They randomly assigned on a 1:1:1 basis 150 patients with recurrent SIA-related bleeding, defined as at least four episodes during the previous year, to an oral daily dose of 100 mg of thalidomide, 50 mg of thalidomide, or placebo for 4 months.
The patients (median age, 62.2 years; 88% aged 50 years or older) were followed for at least 1 year after treatment. The trial was conducted at 10 sites in China.
The primary endpoint was effective response, defined as a reduction of at least 50% in the number of bleeding episodes in the year following thalidomide treatment, compared with the number in the year before treatment. Bleeding was defined as the presence of overt bleeding or a positive fecal occult blood test.
The percentages of patients with effective response at 1-year follow-up were 68.6% in the 100-mg thalidomide group, 51% in the 50-mg thalidomide group, and 16% in the placebo group.
Among secondary endpoints, the incidence of rebleeding during the 4-month treatment period was 27.5% (14 of 51 patients) in the 100-mg thalidomide group, 42.9% (21 of 49 patients) in the 50-mg thalidomide group, and 90% (45 of 50 patients) in the placebo group. The percentage of patients who received a blood transfusion during the 1-year follow-up period were 17.6% in the 100-mg thalidomide group, 24.5% in the 50-mg thalidomide group, and 62% in the placebo group.
Cessation of bleeding, defined by two consecutive negative fecal occult blood tests on different days, during 1 year of follow-up was observed in 44 patients: 26 (51%) of patients in the 100-mg thalidomide group, 16 (32.7%) in the 50-mg thalidomide group, and 2 (4%) in the placebo group. The authors urge further exploration of the duration of benefit and the efficacy of longer courses of treatment.
Adverse events, all grade 1 or 2, resolved after treatment of symptoms, completion of treatment, or discontinuation of thalidomide or placebo.
Retreatment May Be Necessary
In an accompanying editorial, Loren Laine, MD, chief of the section of digestive diseases, internal medicine, and medical chief, digestive health, Yale School of Medicine, New Haven, Connecticut, affirmed the authors’ conclusions and commended the quality of evidence they provided.
“Their results suggest that thalidomide may be disease-modifying, with efficacy persisting after discontinuation,” wrote Dr. Laine, also a Yale professor of medicine and digestive diseases.
While thalidomide effectively prevented rebleeding for 42 patients during the year after therapy was stopped, suggesting an alteration of angiodysplasias, rebleeding during the subsequent 3-27 months occurred among 20 of those patients, Dr. Laine noted. That finding, “suggests that retreatment will be needed,” although the appropriate duration of treatment before retreatment and the duration of retreatment remain unclear, he added.
The study’s reliance on bleeding episodes that were defined by positive fecal occult blood tests, which may be clinically unimportant, is a weakness in the trial, Dr. Laine wrote.
Despite the study’s positive findings, clinicians may still prefer somatostatin analogues because of their potential for better safety and, with once-monthly injections versus daily thalidomide pills, their likelihood for better adherence, Dr. Laine wrote. “[They] will reserve thalidomide for use in patients who have continued bleeding or side effects with somatostatin analogues,” he added.
Somatostatin is rarely used in the treatment of SIA bleeding in China, where thalidomide is relatively easy to obtain and is being used clinically, Dr. Ge told this news organization in response to Dr. Laine’s editorial. “The clinical application of thalidomide has been taken up in other [Chinese] hospitals that have seen our research,” he added.
Future research may include randomized controlled trials of somatostatin, since Chinese experience with it is so limited, Dr. Ge said. “We would want to compare efficacy, safety, feasibility and cost-effectiveness between somatostatin and thalidomide,” he added.
The study was supported by grants from the National Natural Science Foundation of China and a grant from the Shanghai Municipal Education Commission, Gaofeng Clinical Medicine. The author disclosures can be found with the original article.
, according to results of a new placebo-controlled trial.
At 1 year follow-up, thalidomide doses of 100 mg/day and 50 mg/day outperformed placebo in reducing by at least 50% the number of bleeding episodes, compared with the year prior to treatment, according to the study published online in the New England Journal of Medicine.
SIA, an increasingly recognized cause of repeat obscure gastrointestinal bleeding and iron-deficiency anemia, is a distinct vascular abnormality in the mucosa and submucosa characterized by focal accumulation of ectatic vessels. It is the most common cause of small intestine bleeding, especially among patients older than 50.
There is a high unmet need among patients with SIA for an effective and relatively safe oral medication, given substantial recurrent bleeding risks following endoscopic or surgical procedures, and only observational studies suggest treatment with somatostatin and octreotide, noted senior author Zhizheng Ge, MD, Shanghai Jiao Tong University, Shanghai, China.
SIA is characterized by dilated and tortuous arterial or venous capillaries between thin-walled and immature veins and capillaries without a smooth-muscle layer. Its pathologic process involves chronic hypoxia and vessel sprouting.
Dr. Ge and colleagues postulated that thalidomide’s ability to decrease the expression of proangiogenic factors and angiogenesis would have a long-lasting ameliorating effect on bleeding episodes of angiodysplasia, and thus a continued benefit with respect to bleeding cessation. Their previous small, single-center, open-label, randomized controlled trial of thalidomide for SIA showed a benefit, but it required larger confirmatory trials.
For their current trial, the researchers explored whether a short treatment period, selected to avoid treatment nonadherence, could have a long-term effect. They randomly assigned on a 1:1:1 basis 150 patients with recurrent SIA-related bleeding, defined as at least four episodes during the previous year, to an oral daily dose of 100 mg of thalidomide, 50 mg of thalidomide, or placebo for 4 months.
The patients (median age, 62.2 years; 88% aged 50 years or older) were followed for at least 1 year after treatment. The trial was conducted at 10 sites in China.
The primary endpoint was effective response, defined as a reduction of at least 50% in the number of bleeding episodes in the year following thalidomide treatment, compared with the number in the year before treatment. Bleeding was defined as the presence of overt bleeding or a positive fecal occult blood test.
The percentages of patients with effective response at 1-year follow-up were 68.6% in the 100-mg thalidomide group, 51% in the 50-mg thalidomide group, and 16% in the placebo group.
Among secondary endpoints, the incidence of rebleeding during the 4-month treatment period was 27.5% (14 of 51 patients) in the 100-mg thalidomide group, 42.9% (21 of 49 patients) in the 50-mg thalidomide group, and 90% (45 of 50 patients) in the placebo group. The percentage of patients who received a blood transfusion during the 1-year follow-up period were 17.6% in the 100-mg thalidomide group, 24.5% in the 50-mg thalidomide group, and 62% in the placebo group.
Cessation of bleeding, defined by two consecutive negative fecal occult blood tests on different days, during 1 year of follow-up was observed in 44 patients: 26 (51%) of patients in the 100-mg thalidomide group, 16 (32.7%) in the 50-mg thalidomide group, and 2 (4%) in the placebo group. The authors urge further exploration of the duration of benefit and the efficacy of longer courses of treatment.
Adverse events, all grade 1 or 2, resolved after treatment of symptoms, completion of treatment, or discontinuation of thalidomide or placebo.
Retreatment May Be Necessary
In an accompanying editorial, Loren Laine, MD, chief of the section of digestive diseases, internal medicine, and medical chief, digestive health, Yale School of Medicine, New Haven, Connecticut, affirmed the authors’ conclusions and commended the quality of evidence they provided.
“Their results suggest that thalidomide may be disease-modifying, with efficacy persisting after discontinuation,” wrote Dr. Laine, also a Yale professor of medicine and digestive diseases.
While thalidomide effectively prevented rebleeding for 42 patients during the year after therapy was stopped, suggesting an alteration of angiodysplasias, rebleeding during the subsequent 3-27 months occurred among 20 of those patients, Dr. Laine noted. That finding, “suggests that retreatment will be needed,” although the appropriate duration of treatment before retreatment and the duration of retreatment remain unclear, he added.
The study’s reliance on bleeding episodes that were defined by positive fecal occult blood tests, which may be clinically unimportant, is a weakness in the trial, Dr. Laine wrote.
Despite the study’s positive findings, clinicians may still prefer somatostatin analogues because of their potential for better safety and, with once-monthly injections versus daily thalidomide pills, their likelihood for better adherence, Dr. Laine wrote. “[They] will reserve thalidomide for use in patients who have continued bleeding or side effects with somatostatin analogues,” he added.
Somatostatin is rarely used in the treatment of SIA bleeding in China, where thalidomide is relatively easy to obtain and is being used clinically, Dr. Ge told this news organization in response to Dr. Laine’s editorial. “The clinical application of thalidomide has been taken up in other [Chinese] hospitals that have seen our research,” he added.
Future research may include randomized controlled trials of somatostatin, since Chinese experience with it is so limited, Dr. Ge said. “We would want to compare efficacy, safety, feasibility and cost-effectiveness between somatostatin and thalidomide,” he added.
The study was supported by grants from the National Natural Science Foundation of China and a grant from the Shanghai Municipal Education Commission, Gaofeng Clinical Medicine. The author disclosures can be found with the original article.
, according to results of a new placebo-controlled trial.
At 1 year follow-up, thalidomide doses of 100 mg/day and 50 mg/day outperformed placebo in reducing by at least 50% the number of bleeding episodes, compared with the year prior to treatment, according to the study published online in the New England Journal of Medicine.
SIA, an increasingly recognized cause of repeat obscure gastrointestinal bleeding and iron-deficiency anemia, is a distinct vascular abnormality in the mucosa and submucosa characterized by focal accumulation of ectatic vessels. It is the most common cause of small intestine bleeding, especially among patients older than 50.
There is a high unmet need among patients with SIA for an effective and relatively safe oral medication, given substantial recurrent bleeding risks following endoscopic or surgical procedures, and only observational studies suggest treatment with somatostatin and octreotide, noted senior author Zhizheng Ge, MD, Shanghai Jiao Tong University, Shanghai, China.
SIA is characterized by dilated and tortuous arterial or venous capillaries between thin-walled and immature veins and capillaries without a smooth-muscle layer. Its pathologic process involves chronic hypoxia and vessel sprouting.
Dr. Ge and colleagues postulated that thalidomide’s ability to decrease the expression of proangiogenic factors and angiogenesis would have a long-lasting ameliorating effect on bleeding episodes of angiodysplasia, and thus a continued benefit with respect to bleeding cessation. Their previous small, single-center, open-label, randomized controlled trial of thalidomide for SIA showed a benefit, but it required larger confirmatory trials.
For their current trial, the researchers explored whether a short treatment period, selected to avoid treatment nonadherence, could have a long-term effect. They randomly assigned on a 1:1:1 basis 150 patients with recurrent SIA-related bleeding, defined as at least four episodes during the previous year, to an oral daily dose of 100 mg of thalidomide, 50 mg of thalidomide, or placebo for 4 months.
The patients (median age, 62.2 years; 88% aged 50 years or older) were followed for at least 1 year after treatment. The trial was conducted at 10 sites in China.
The primary endpoint was effective response, defined as a reduction of at least 50% in the number of bleeding episodes in the year following thalidomide treatment, compared with the number in the year before treatment. Bleeding was defined as the presence of overt bleeding or a positive fecal occult blood test.
The percentages of patients with effective response at 1-year follow-up were 68.6% in the 100-mg thalidomide group, 51% in the 50-mg thalidomide group, and 16% in the placebo group.
Among secondary endpoints, the incidence of rebleeding during the 4-month treatment period was 27.5% (14 of 51 patients) in the 100-mg thalidomide group, 42.9% (21 of 49 patients) in the 50-mg thalidomide group, and 90% (45 of 50 patients) in the placebo group. The percentage of patients who received a blood transfusion during the 1-year follow-up period were 17.6% in the 100-mg thalidomide group, 24.5% in the 50-mg thalidomide group, and 62% in the placebo group.
Cessation of bleeding, defined by two consecutive negative fecal occult blood tests on different days, during 1 year of follow-up was observed in 44 patients: 26 (51%) of patients in the 100-mg thalidomide group, 16 (32.7%) in the 50-mg thalidomide group, and 2 (4%) in the placebo group. The authors urge further exploration of the duration of benefit and the efficacy of longer courses of treatment.
Adverse events, all grade 1 or 2, resolved after treatment of symptoms, completion of treatment, or discontinuation of thalidomide or placebo.
Retreatment May Be Necessary
In an accompanying editorial, Loren Laine, MD, chief of the section of digestive diseases, internal medicine, and medical chief, digestive health, Yale School of Medicine, New Haven, Connecticut, affirmed the authors’ conclusions and commended the quality of evidence they provided.
“Their results suggest that thalidomide may be disease-modifying, with efficacy persisting after discontinuation,” wrote Dr. Laine, also a Yale professor of medicine and digestive diseases.
While thalidomide effectively prevented rebleeding for 42 patients during the year after therapy was stopped, suggesting an alteration of angiodysplasias, rebleeding during the subsequent 3-27 months occurred among 20 of those patients, Dr. Laine noted. That finding, “suggests that retreatment will be needed,” although the appropriate duration of treatment before retreatment and the duration of retreatment remain unclear, he added.
The study’s reliance on bleeding episodes that were defined by positive fecal occult blood tests, which may be clinically unimportant, is a weakness in the trial, Dr. Laine wrote.
Despite the study’s positive findings, clinicians may still prefer somatostatin analogues because of their potential for better safety and, with once-monthly injections versus daily thalidomide pills, their likelihood for better adherence, Dr. Laine wrote. “[They] will reserve thalidomide for use in patients who have continued bleeding or side effects with somatostatin analogues,” he added.
Somatostatin is rarely used in the treatment of SIA bleeding in China, where thalidomide is relatively easy to obtain and is being used clinically, Dr. Ge told this news organization in response to Dr. Laine’s editorial. “The clinical application of thalidomide has been taken up in other [Chinese] hospitals that have seen our research,” he added.
Future research may include randomized controlled trials of somatostatin, since Chinese experience with it is so limited, Dr. Ge said. “We would want to compare efficacy, safety, feasibility and cost-effectiveness between somatostatin and thalidomide,” he added.
The study was supported by grants from the National Natural Science Foundation of China and a grant from the Shanghai Municipal Education Commission, Gaofeng Clinical Medicine. The author disclosures can be found with the original article.
FROM THE NEW ENGLAND JOURNAL OF MEDICINE
Pulmonary arterial hypertension: Promising results for investigational agents and catheter-based denervation
PHILADELPHIA — Promise that the unmet need for more effective pulmonary artery hypertension treatments may soon be met was in strong evidence in research into three strategies presented at this year’s recent American Heart Association scientific sessions; one was based on an ancient Chinese herb epimedium (yin yang huo or horny goat weed) commonly used for treating sexual dysfunction and directly related to the phosphodiesterase inhibitors sildenafil, vardenafil, and tadalafil (sold as Viagra, Levitra, and Cialis). A second studied sotatercept, an investigational, potential first-in-class activin signaling inhibitor biologic, and a third evaluated physically ablating the baroreceptor nerves that stimulate vasoconstriction of the pulmonary artery via catheter-based techniques.
Until as recently as the late 1970s, a pulmonary arterial hypertension diagnosis was a uniformly fatal one.1 While associated with pulmonary and right ventricle remodeling, and leads toward heart failure and death. The complex underlying pathogenesis was divided into six groups by the 6th World Symposium on Pulmonary Hypertension (WSPH) in 2018, and includes as its most common features pulmonary artery endothelial cell dysfunction, pulmonary artery smooth muscle cell proliferation and migration, and dysregulated fibroblast activity leading to dysregulated vasoconstriction, micro and in-situ vascular thrombosis, vascular fibrosis and pathogenic remodeling of pulmonary vessels.1 The threshold mean arterial pressure (mPAP) for pulmonary arterial hypertension was defined by the 6th [WSPH] at mPAP ≥ 20 mm Hg, twice the upper limit of a normal mPAP of 14.0 ± 3.3 mm Hg as reported by Kovacs et al. in 2018.2
Pathways for current therapies
Current drugs for pulmonary arterial hypertension focus on three signaling pathways, including the endothelin receptor, prostacyclin and nitric oxide pathways, stated Zhi-Cheng Jing, MD, professor of medicine, head of the cardiology department at Peking Union Medical College Hospital, Peking, China. While the phosphodiesterase 5 inhibitors sildenafil and tadalafil, which target the nitric oxide pathway, came into wide use after Food and Drug Administration approval, the need for higher PDE5-selectivity remains, Dr. Jing said. Structurally modified from the active ingredient in epimedium, TPN171H is an investigational PDE5 inhibitor which has shown several favorable features: a greater PDE5 selectivity than both sildenafil and tadalafil in vitro, an ability to decrease right ventricular systolic pressure and alleviate arterial remodeling in animal studies, and safety and tolerability in healthy human subjects.
The current randomized, double-blind, placebo-and active-controlled phase IIa study assessed the hemodynamic impact of a single oral dose of TPN171H in 60 pulmonary arterial hypertension patients (mean age ~34 years, 83.3% female), all with negative vasodilation test results and in WHO class 2 or 3. Only patients aged 18-75 years with group 1 pulmonary arterial hypertension of idiopathic, connective tissue disorder, or repaired congenital heart defects etiology were included. Patients were divided into six groups: placebo, TPN171H at 2.5, 5, and 10 milligrams, and tadalafil at 20 and 40 milligrams.
For the primary endpoint of maximum decrease in pulmonary vascular resistance (PVR), significant reductions vs. placebo were found only for the TPN171H 5-mg group (–41.2% vs. –24.4%; P = .008) and for the 20-mg (–39.8%) and 40-mg (–37.6%) tadalafil groups (both P < .05). What was not seen in the tadalafil groups, but was evident in the TPN171H 5-mg group, was a significant reduction in the secondary endpoint of PVR/SVR (systolic vascular resistance) at 2, 3, and 5 hours (all P < .05). “As we know,” Dr. Jing said in an interview, “the PDE5 inhibitor functions as a vasodilator, having an impact on both pulmonary circulation and systemic circulation. So, to evaluate the selectivity for pulmonary circulation is crucial when exploring a novel drug for pulmonary arterial hypertension. The change of PVR/SVR ratio from baseline is an indicator for selectivity for pulmonary circulation and implies that TPN171H has good PDE5 selectivity in the pulmonary vasculature,” Dr. Jing said.
TPN171H was well tolerated with no serious adverse effects (vomiting 10% and headache 10% were most common with no discontinuations).
TGF-signaling pathway
A meta-analysis of randomized controlled trials of sotatercept, an investigational fusion protein under priority FDA review that modulates the TGF-beta superfamily signaling pathway, looked at PVR, pulmonary arterial pressure (PAP), right arterial pressure (RAP) and N-terminal pro-brain natriuretic peptide (NT-proBNP). A literature search by corresponding author Vamsikalyan Borra, MD, Knapp Medical Center, Weslaco, Texas, and colleagues identified two trials (STELLAR and PULSAR) comprising 429 patients with pulmonary arterial hypertension. The experimental arms (sotatercept) had 237 patients (mean age ~49 years, ~82% female) and the placebo arm had 192 patients (mean age ~47 years, ~80% female).
A pooled analysis showed significant reductions with sotatercept in PVR (standardization mean difference [SMD] = –1.00, 95% confidence interval [CI] = –1.2, –.79, P < .001), PAP (SMD = –1.34, 95% CI = 1.6, –1.08, P < .001), RAP (SMD = –0.66, 95% CI = –0.93, –0.39, P < .001), and the levels of NT-proBNP (SMD = –0.64, 95% CI = –1.01, –0.27, P < .001) at 24 weeks from baseline. The sotatercept safety profile was favorable, with lower overall incidence of adverse events (84.8% vs. 87.5%) and fewer adverse events leading to death (0.4% vs. 3.1%) compared with placebo. Further investigation is needed, however, according to Dr. Borra, into the higher frequency of reported thrombocytopenia (71.7% vs. 20.8%) with sotatercept. “Our findings,” Dr. Borra said in a poster session, “suggest that sotatercept is an effective treatment option for pulmonary arterial hypertension, with the potential to improve both pulmonary and cardiac function.”
Denervation technique
Catheter-based ablation techniques, most commonly using thermal energy, target the afferent and efferent fibers of the baroreceptor reflex in the main pulmonary artery trunk and bifurcation involved in elevated pulmonary artery pressure. Mounica Vorla, MD, Carle Foundation Hospital, Urbana, Illinois, and colleagues conducted an updated systematic review and meta-analysis of the safety and efficacy of pulmonary artery denervation (PADN) for pulmonary arterial hypertension in seven clinical trials with 506 patients with moderate-severe pulmonary arterial hypertension conducted from 2013 to 2022.
Compared with placebo, PADN treatment was associated with a significant reduction in mean pulmonary artery pressure (weighted mean difference [WMD] = –6.9 mm Hg; 95% CI = –9.7, –4.1; P < .01; I2 = 61) and pulmonary vascular resistance (WMD = –3.2; 95% CI = –5.4, –0.9; P = .005). PADN improvements in cardiac output were also statistically significant (WMD = 0.3; 95% CI = 0.07, 0.6; P = .012), with numerical improvement in 6-minute walking distance (WMD = 67.7; 95% CI = –3.73, 139.2; P = .06) in the PADN group. Side effects were less common in the PADN group as compared with the placebo group, Dr. Vorla reported. She concluded, “This updated meta-analysis supports PADN as a safe and efficacious therapy for severe pulmonary arterial hypertension.” The authors noted limitations imposed by the small sample size, large data heterogeneity, and medium-quality literature. Larger randomized, controlled trials with clinical endpoints comparing PADN with optimal medical therapy are needed, they stated.
References
1. Shah AJ et al. New Drugs and Therapies in Pulmonary Arterial Hypertension. Int J Mol Sci. 2023 Mar 19;24(6):5850. doi: 10.3390/ijms24065850. PMID: 36982922; PMCID: PMC10058689.
2. Kovacs G et al. Pulmonary Vascular Involvement in Chronic Obstructive Pulmonary Disease. Is There a Pulmonary Vascular Phenotype? Am J Respir Crit Care Med. 2018 Oct 15;198(8):1000-11. doi: 10.1164/rccm.201801-0095PP. PMID: 29746142.
PHILADELPHIA — Promise that the unmet need for more effective pulmonary artery hypertension treatments may soon be met was in strong evidence in research into three strategies presented at this year’s recent American Heart Association scientific sessions; one was based on an ancient Chinese herb epimedium (yin yang huo or horny goat weed) commonly used for treating sexual dysfunction and directly related to the phosphodiesterase inhibitors sildenafil, vardenafil, and tadalafil (sold as Viagra, Levitra, and Cialis). A second studied sotatercept, an investigational, potential first-in-class activin signaling inhibitor biologic, and a third evaluated physically ablating the baroreceptor nerves that stimulate vasoconstriction of the pulmonary artery via catheter-based techniques.
Until as recently as the late 1970s, a pulmonary arterial hypertension diagnosis was a uniformly fatal one.1 While associated with pulmonary and right ventricle remodeling, and leads toward heart failure and death. The complex underlying pathogenesis was divided into six groups by the 6th World Symposium on Pulmonary Hypertension (WSPH) in 2018, and includes as its most common features pulmonary artery endothelial cell dysfunction, pulmonary artery smooth muscle cell proliferation and migration, and dysregulated fibroblast activity leading to dysregulated vasoconstriction, micro and in-situ vascular thrombosis, vascular fibrosis and pathogenic remodeling of pulmonary vessels.1 The threshold mean arterial pressure (mPAP) for pulmonary arterial hypertension was defined by the 6th [WSPH] at mPAP ≥ 20 mm Hg, twice the upper limit of a normal mPAP of 14.0 ± 3.3 mm Hg as reported by Kovacs et al. in 2018.2
Pathways for current therapies
Current drugs for pulmonary arterial hypertension focus on three signaling pathways, including the endothelin receptor, prostacyclin and nitric oxide pathways, stated Zhi-Cheng Jing, MD, professor of medicine, head of the cardiology department at Peking Union Medical College Hospital, Peking, China. While the phosphodiesterase 5 inhibitors sildenafil and tadalafil, which target the nitric oxide pathway, came into wide use after Food and Drug Administration approval, the need for higher PDE5-selectivity remains, Dr. Jing said. Structurally modified from the active ingredient in epimedium, TPN171H is an investigational PDE5 inhibitor which has shown several favorable features: a greater PDE5 selectivity than both sildenafil and tadalafil in vitro, an ability to decrease right ventricular systolic pressure and alleviate arterial remodeling in animal studies, and safety and tolerability in healthy human subjects.
The current randomized, double-blind, placebo-and active-controlled phase IIa study assessed the hemodynamic impact of a single oral dose of TPN171H in 60 pulmonary arterial hypertension patients (mean age ~34 years, 83.3% female), all with negative vasodilation test results and in WHO class 2 or 3. Only patients aged 18-75 years with group 1 pulmonary arterial hypertension of idiopathic, connective tissue disorder, or repaired congenital heart defects etiology were included. Patients were divided into six groups: placebo, TPN171H at 2.5, 5, and 10 milligrams, and tadalafil at 20 and 40 milligrams.
For the primary endpoint of maximum decrease in pulmonary vascular resistance (PVR), significant reductions vs. placebo were found only for the TPN171H 5-mg group (–41.2% vs. –24.4%; P = .008) and for the 20-mg (–39.8%) and 40-mg (–37.6%) tadalafil groups (both P < .05). What was not seen in the tadalafil groups, but was evident in the TPN171H 5-mg group, was a significant reduction in the secondary endpoint of PVR/SVR (systolic vascular resistance) at 2, 3, and 5 hours (all P < .05). “As we know,” Dr. Jing said in an interview, “the PDE5 inhibitor functions as a vasodilator, having an impact on both pulmonary circulation and systemic circulation. So, to evaluate the selectivity for pulmonary circulation is crucial when exploring a novel drug for pulmonary arterial hypertension. The change of PVR/SVR ratio from baseline is an indicator for selectivity for pulmonary circulation and implies that TPN171H has good PDE5 selectivity in the pulmonary vasculature,” Dr. Jing said.
TPN171H was well tolerated with no serious adverse effects (vomiting 10% and headache 10% were most common with no discontinuations).
TGF-signaling pathway
A meta-analysis of randomized controlled trials of sotatercept, an investigational fusion protein under priority FDA review that modulates the TGF-beta superfamily signaling pathway, looked at PVR, pulmonary arterial pressure (PAP), right arterial pressure (RAP) and N-terminal pro-brain natriuretic peptide (NT-proBNP). A literature search by corresponding author Vamsikalyan Borra, MD, Knapp Medical Center, Weslaco, Texas, and colleagues identified two trials (STELLAR and PULSAR) comprising 429 patients with pulmonary arterial hypertension. The experimental arms (sotatercept) had 237 patients (mean age ~49 years, ~82% female) and the placebo arm had 192 patients (mean age ~47 years, ~80% female).
A pooled analysis showed significant reductions with sotatercept in PVR (standardization mean difference [SMD] = –1.00, 95% confidence interval [CI] = –1.2, –.79, P < .001), PAP (SMD = –1.34, 95% CI = 1.6, –1.08, P < .001), RAP (SMD = –0.66, 95% CI = –0.93, –0.39, P < .001), and the levels of NT-proBNP (SMD = –0.64, 95% CI = –1.01, –0.27, P < .001) at 24 weeks from baseline. The sotatercept safety profile was favorable, with lower overall incidence of adverse events (84.8% vs. 87.5%) and fewer adverse events leading to death (0.4% vs. 3.1%) compared with placebo. Further investigation is needed, however, according to Dr. Borra, into the higher frequency of reported thrombocytopenia (71.7% vs. 20.8%) with sotatercept. “Our findings,” Dr. Borra said in a poster session, “suggest that sotatercept is an effective treatment option for pulmonary arterial hypertension, with the potential to improve both pulmonary and cardiac function.”
Denervation technique
Catheter-based ablation techniques, most commonly using thermal energy, target the afferent and efferent fibers of the baroreceptor reflex in the main pulmonary artery trunk and bifurcation involved in elevated pulmonary artery pressure. Mounica Vorla, MD, Carle Foundation Hospital, Urbana, Illinois, and colleagues conducted an updated systematic review and meta-analysis of the safety and efficacy of pulmonary artery denervation (PADN) for pulmonary arterial hypertension in seven clinical trials with 506 patients with moderate-severe pulmonary arterial hypertension conducted from 2013 to 2022.
Compared with placebo, PADN treatment was associated with a significant reduction in mean pulmonary artery pressure (weighted mean difference [WMD] = –6.9 mm Hg; 95% CI = –9.7, –4.1; P < .01; I2 = 61) and pulmonary vascular resistance (WMD = –3.2; 95% CI = –5.4, –0.9; P = .005). PADN improvements in cardiac output were also statistically significant (WMD = 0.3; 95% CI = 0.07, 0.6; P = .012), with numerical improvement in 6-minute walking distance (WMD = 67.7; 95% CI = –3.73, 139.2; P = .06) in the PADN group. Side effects were less common in the PADN group as compared with the placebo group, Dr. Vorla reported. She concluded, “This updated meta-analysis supports PADN as a safe and efficacious therapy for severe pulmonary arterial hypertension.” The authors noted limitations imposed by the small sample size, large data heterogeneity, and medium-quality literature. Larger randomized, controlled trials with clinical endpoints comparing PADN with optimal medical therapy are needed, they stated.
References
1. Shah AJ et al. New Drugs and Therapies in Pulmonary Arterial Hypertension. Int J Mol Sci. 2023 Mar 19;24(6):5850. doi: 10.3390/ijms24065850. PMID: 36982922; PMCID: PMC10058689.
2. Kovacs G et al. Pulmonary Vascular Involvement in Chronic Obstructive Pulmonary Disease. Is There a Pulmonary Vascular Phenotype? Am J Respir Crit Care Med. 2018 Oct 15;198(8):1000-11. doi: 10.1164/rccm.201801-0095PP. PMID: 29746142.
PHILADELPHIA — Promise that the unmet need for more effective pulmonary artery hypertension treatments may soon be met was in strong evidence in research into three strategies presented at this year’s recent American Heart Association scientific sessions; one was based on an ancient Chinese herb epimedium (yin yang huo or horny goat weed) commonly used for treating sexual dysfunction and directly related to the phosphodiesterase inhibitors sildenafil, vardenafil, and tadalafil (sold as Viagra, Levitra, and Cialis). A second studied sotatercept, an investigational, potential first-in-class activin signaling inhibitor biologic, and a third evaluated physically ablating the baroreceptor nerves that stimulate vasoconstriction of the pulmonary artery via catheter-based techniques.
Until as recently as the late 1970s, a pulmonary arterial hypertension diagnosis was a uniformly fatal one.1 While associated with pulmonary and right ventricle remodeling, and leads toward heart failure and death. The complex underlying pathogenesis was divided into six groups by the 6th World Symposium on Pulmonary Hypertension (WSPH) in 2018, and includes as its most common features pulmonary artery endothelial cell dysfunction, pulmonary artery smooth muscle cell proliferation and migration, and dysregulated fibroblast activity leading to dysregulated vasoconstriction, micro and in-situ vascular thrombosis, vascular fibrosis and pathogenic remodeling of pulmonary vessels.1 The threshold mean arterial pressure (mPAP) for pulmonary arterial hypertension was defined by the 6th [WSPH] at mPAP ≥ 20 mm Hg, twice the upper limit of a normal mPAP of 14.0 ± 3.3 mm Hg as reported by Kovacs et al. in 2018.2
Pathways for current therapies
Current drugs for pulmonary arterial hypertension focus on three signaling pathways, including the endothelin receptor, prostacyclin and nitric oxide pathways, stated Zhi-Cheng Jing, MD, professor of medicine, head of the cardiology department at Peking Union Medical College Hospital, Peking, China. While the phosphodiesterase 5 inhibitors sildenafil and tadalafil, which target the nitric oxide pathway, came into wide use after Food and Drug Administration approval, the need for higher PDE5-selectivity remains, Dr. Jing said. Structurally modified from the active ingredient in epimedium, TPN171H is an investigational PDE5 inhibitor which has shown several favorable features: a greater PDE5 selectivity than both sildenafil and tadalafil in vitro, an ability to decrease right ventricular systolic pressure and alleviate arterial remodeling in animal studies, and safety and tolerability in healthy human subjects.
The current randomized, double-blind, placebo-and active-controlled phase IIa study assessed the hemodynamic impact of a single oral dose of TPN171H in 60 pulmonary arterial hypertension patients (mean age ~34 years, 83.3% female), all with negative vasodilation test results and in WHO class 2 or 3. Only patients aged 18-75 years with group 1 pulmonary arterial hypertension of idiopathic, connective tissue disorder, or repaired congenital heart defects etiology were included. Patients were divided into six groups: placebo, TPN171H at 2.5, 5, and 10 milligrams, and tadalafil at 20 and 40 milligrams.
For the primary endpoint of maximum decrease in pulmonary vascular resistance (PVR), significant reductions vs. placebo were found only for the TPN171H 5-mg group (–41.2% vs. –24.4%; P = .008) and for the 20-mg (–39.8%) and 40-mg (–37.6%) tadalafil groups (both P < .05). What was not seen in the tadalafil groups, but was evident in the TPN171H 5-mg group, was a significant reduction in the secondary endpoint of PVR/SVR (systolic vascular resistance) at 2, 3, and 5 hours (all P < .05). “As we know,” Dr. Jing said in an interview, “the PDE5 inhibitor functions as a vasodilator, having an impact on both pulmonary circulation and systemic circulation. So, to evaluate the selectivity for pulmonary circulation is crucial when exploring a novel drug for pulmonary arterial hypertension. The change of PVR/SVR ratio from baseline is an indicator for selectivity for pulmonary circulation and implies that TPN171H has good PDE5 selectivity in the pulmonary vasculature,” Dr. Jing said.
TPN171H was well tolerated with no serious adverse effects (vomiting 10% and headache 10% were most common with no discontinuations).
TGF-signaling pathway
A meta-analysis of randomized controlled trials of sotatercept, an investigational fusion protein under priority FDA review that modulates the TGF-beta superfamily signaling pathway, looked at PVR, pulmonary arterial pressure (PAP), right arterial pressure (RAP) and N-terminal pro-brain natriuretic peptide (NT-proBNP). A literature search by corresponding author Vamsikalyan Borra, MD, Knapp Medical Center, Weslaco, Texas, and colleagues identified two trials (STELLAR and PULSAR) comprising 429 patients with pulmonary arterial hypertension. The experimental arms (sotatercept) had 237 patients (mean age ~49 years, ~82% female) and the placebo arm had 192 patients (mean age ~47 years, ~80% female).
A pooled analysis showed significant reductions with sotatercept in PVR (standardization mean difference [SMD] = –1.00, 95% confidence interval [CI] = –1.2, –.79, P < .001), PAP (SMD = –1.34, 95% CI = 1.6, –1.08, P < .001), RAP (SMD = –0.66, 95% CI = –0.93, –0.39, P < .001), and the levels of NT-proBNP (SMD = –0.64, 95% CI = –1.01, –0.27, P < .001) at 24 weeks from baseline. The sotatercept safety profile was favorable, with lower overall incidence of adverse events (84.8% vs. 87.5%) and fewer adverse events leading to death (0.4% vs. 3.1%) compared with placebo. Further investigation is needed, however, according to Dr. Borra, into the higher frequency of reported thrombocytopenia (71.7% vs. 20.8%) with sotatercept. “Our findings,” Dr. Borra said in a poster session, “suggest that sotatercept is an effective treatment option for pulmonary arterial hypertension, with the potential to improve both pulmonary and cardiac function.”
Denervation technique
Catheter-based ablation techniques, most commonly using thermal energy, target the afferent and efferent fibers of the baroreceptor reflex in the main pulmonary artery trunk and bifurcation involved in elevated pulmonary artery pressure. Mounica Vorla, MD, Carle Foundation Hospital, Urbana, Illinois, and colleagues conducted an updated systematic review and meta-analysis of the safety and efficacy of pulmonary artery denervation (PADN) for pulmonary arterial hypertension in seven clinical trials with 506 patients with moderate-severe pulmonary arterial hypertension conducted from 2013 to 2022.
Compared with placebo, PADN treatment was associated with a significant reduction in mean pulmonary artery pressure (weighted mean difference [WMD] = –6.9 mm Hg; 95% CI = –9.7, –4.1; P < .01; I2 = 61) and pulmonary vascular resistance (WMD = –3.2; 95% CI = –5.4, –0.9; P = .005). PADN improvements in cardiac output were also statistically significant (WMD = 0.3; 95% CI = 0.07, 0.6; P = .012), with numerical improvement in 6-minute walking distance (WMD = 67.7; 95% CI = –3.73, 139.2; P = .06) in the PADN group. Side effects were less common in the PADN group as compared with the placebo group, Dr. Vorla reported. She concluded, “This updated meta-analysis supports PADN as a safe and efficacious therapy for severe pulmonary arterial hypertension.” The authors noted limitations imposed by the small sample size, large data heterogeneity, and medium-quality literature. Larger randomized, controlled trials with clinical endpoints comparing PADN with optimal medical therapy are needed, they stated.
References
1. Shah AJ et al. New Drugs and Therapies in Pulmonary Arterial Hypertension. Int J Mol Sci. 2023 Mar 19;24(6):5850. doi: 10.3390/ijms24065850. PMID: 36982922; PMCID: PMC10058689.
2. Kovacs G et al. Pulmonary Vascular Involvement in Chronic Obstructive Pulmonary Disease. Is There a Pulmonary Vascular Phenotype? Am J Respir Crit Care Med. 2018 Oct 15;198(8):1000-11. doi: 10.1164/rccm.201801-0095PP. PMID: 29746142.
FROM AHA 2023
Smartphone app detects voice quality changes indicating worsening heart failure
Worsening heart failure is accompanied by a build-up of fluid in the lungs. An AI smartphone app that picks up changes in a heart failure patient’s voice quality caused by this fluid accumulation and then alerts the physician about them – nearly 3 weeks before that ongoing decompensation would necessitate hospitalization and/or lead the physician to urgently introduce intravenous diuretics – is getting experts to sit up and take notice.
“In this incredibly prevalent waxing and waning condition, finding ways to identify worsening heart failure to prevent hospitalization and progressive disease is incredibly important,” observed American Heart Association (AHA)-appointed discussant David Ouyang, MD, assistant professor, Smidt Heart Institute, Division of Artificial Intelligence in Medicine, Cedars Sinai, Los Angeles. “Heart failure remains among the most common causes of hospitalization for older adults in the United States.
“The other standout feature is that we all use our cell phones on a daily basis,” Dr. Ouyang said at a late-breaking trial press briefing at the AHA 2023 annual meeting where results of the HearO Community Study were presented. “The ability to capture data from routine speech (patients speak five sentences into their phones every morning) is remarkable ... The HearO® technology was able to detect a substantial proportion of worsening heart failure events, with an average per individual of only three false positives over the course of a year. And, adherence to the study protocol was 81%. That’s higher than in many other kinds of routine patient monitoring studies,” he added.
Accumulating fluid changes speech
(e.g., pharynx, velum, tongue, and vocal folds). In the Israeli study, investigators enrolled 416 adults (75% were male, average age was 68 years) whose New York Heart Association (NYHA) 2-3 heart failure with either reduced or preserved ejection fraction was stable but placed them at-risk for heart failure events. The study goal was to analyze their speech data using the HearO® system to refine and test its ability to detect impending heart failure deterioration. Patients recorded five sentences in their native language (Hebrew, Russian, Arabic, or English) into the smartphone app daily. In a training phase of the study, distinct speech measures from 263 participants were used to develop the AI algorithm. Then, the algorithm was used in the remaining 153 participants to validate the tool’s effectiveness. In its ultimate form, once a deviation from the patient’s predefined baseline is detected, the app will generate a notice and send it to the health care practitioners.
Lead study author William T. Abraham, MD, FAHA, professor of medicine, physiology, and cell biology; and a College of Medicine Distinguished Professor in the division of cardiovascular medicine at The Ohio State University in Columbus, reported that between Mar. 27, 2018, and Nov. 30, 2021, subjects in the training phase made recordings on 83% of days. They were followed for up to 44 months. The test group made recordings on 81% of days between Feb. 1, 2020, and Apr. 30, 2023, and were followed for up to 31 months. Heart failure events were defined as hospitalization or outpatient intravenous diuretic treatment for worsening heart failure.
In the training phase, the app accurately predicted 44 of 58 heart failure events (76%) and 81% of first events (n = 35) on average 24 days before hospitalization or need for intravenous fluids. In the validation phase, the app was 71% accurate in detecting 10 of 14 heart failure events and 77% of first events (n = 10) on average 26 days in advance of events. In both periods, the app generated about 3 unnecessary alerts per patient year.
Dr. Abraham concluded, “This technology has the potential to improve patient outcomes, keeping patients well and out of the hospital, through the implementation of proactive, outpatient care in response to voice changes.”
The HearO® technology is being evaluated in an ongoing pivotal trial in the United State4s, Dr. Abraham said. The study is limited, he added, by the small number of patients and heart failure events, particularly in the test group.
“We continue to struggle with the burden of heart failure morbidity,” observed AHA press briefing moderator (and past AHA president) Clyde Yancy, MD, Magerstadt Professor at Northwestern University, Chicago. “So any tool that we can utilize and further refine that helps us address the need for hospitalization becomes very important. The idea that speech evaluation might give us sufficient early warning to forestall any admissions – and consider the cost savings attributable to that – is a very credible goal that we should continue to follow.” He pointed out that the technology enables assessments in the home environment for older patients who are less mobile.
In response to a press briefing question about the potential for physicians to be trained to hear early subtle voice changes on their own, Dr. Abraham stated, “I guess that is unknown, but the important difference is the system’s ability to take data in every day from patients and then process it automatically with AI.”
Joining in, Dr. Yancy said, “You know, this is interesting because even if you saw a patient once a month, which is an incredible frequency for any practice, there’s still 353 days that you haven’t seen the patient.” He noted that the AHA had just announced a multi-million dollar program to more deeply understand telemanagement. “So I think this is here to stay,” Dr. Yancy said.
Dr. Ouyang posed a further question. “Like with most AI recognition tools, we can now identify individuals at risk. How do we get from that step of identifying those at risk to improving their outcomes? This has been a critical question about heart failure, remote management, and remote monitoring, and I think it is a critical question for many of our AI tools.”
Dr. Abraham disclosed that he has received personal fees from Cordio Medical. Dr. Ouyang said that he had no disclosures relevant to this presentation.
Worsening heart failure is accompanied by a build-up of fluid in the lungs. An AI smartphone app that picks up changes in a heart failure patient’s voice quality caused by this fluid accumulation and then alerts the physician about them – nearly 3 weeks before that ongoing decompensation would necessitate hospitalization and/or lead the physician to urgently introduce intravenous diuretics – is getting experts to sit up and take notice.
“In this incredibly prevalent waxing and waning condition, finding ways to identify worsening heart failure to prevent hospitalization and progressive disease is incredibly important,” observed American Heart Association (AHA)-appointed discussant David Ouyang, MD, assistant professor, Smidt Heart Institute, Division of Artificial Intelligence in Medicine, Cedars Sinai, Los Angeles. “Heart failure remains among the most common causes of hospitalization for older adults in the United States.
“The other standout feature is that we all use our cell phones on a daily basis,” Dr. Ouyang said at a late-breaking trial press briefing at the AHA 2023 annual meeting where results of the HearO Community Study were presented. “The ability to capture data from routine speech (patients speak five sentences into their phones every morning) is remarkable ... The HearO® technology was able to detect a substantial proportion of worsening heart failure events, with an average per individual of only three false positives over the course of a year. And, adherence to the study protocol was 81%. That’s higher than in many other kinds of routine patient monitoring studies,” he added.
Accumulating fluid changes speech
(e.g., pharynx, velum, tongue, and vocal folds). In the Israeli study, investigators enrolled 416 adults (75% were male, average age was 68 years) whose New York Heart Association (NYHA) 2-3 heart failure with either reduced or preserved ejection fraction was stable but placed them at-risk for heart failure events. The study goal was to analyze their speech data using the HearO® system to refine and test its ability to detect impending heart failure deterioration. Patients recorded five sentences in their native language (Hebrew, Russian, Arabic, or English) into the smartphone app daily. In a training phase of the study, distinct speech measures from 263 participants were used to develop the AI algorithm. Then, the algorithm was used in the remaining 153 participants to validate the tool’s effectiveness. In its ultimate form, once a deviation from the patient’s predefined baseline is detected, the app will generate a notice and send it to the health care practitioners.
Lead study author William T. Abraham, MD, FAHA, professor of medicine, physiology, and cell biology; and a College of Medicine Distinguished Professor in the division of cardiovascular medicine at The Ohio State University in Columbus, reported that between Mar. 27, 2018, and Nov. 30, 2021, subjects in the training phase made recordings on 83% of days. They were followed for up to 44 months. The test group made recordings on 81% of days between Feb. 1, 2020, and Apr. 30, 2023, and were followed for up to 31 months. Heart failure events were defined as hospitalization or outpatient intravenous diuretic treatment for worsening heart failure.
In the training phase, the app accurately predicted 44 of 58 heart failure events (76%) and 81% of first events (n = 35) on average 24 days before hospitalization or need for intravenous fluids. In the validation phase, the app was 71% accurate in detecting 10 of 14 heart failure events and 77% of first events (n = 10) on average 26 days in advance of events. In both periods, the app generated about 3 unnecessary alerts per patient year.
Dr. Abraham concluded, “This technology has the potential to improve patient outcomes, keeping patients well and out of the hospital, through the implementation of proactive, outpatient care in response to voice changes.”
The HearO® technology is being evaluated in an ongoing pivotal trial in the United State4s, Dr. Abraham said. The study is limited, he added, by the small number of patients and heart failure events, particularly in the test group.
“We continue to struggle with the burden of heart failure morbidity,” observed AHA press briefing moderator (and past AHA president) Clyde Yancy, MD, Magerstadt Professor at Northwestern University, Chicago. “So any tool that we can utilize and further refine that helps us address the need for hospitalization becomes very important. The idea that speech evaluation might give us sufficient early warning to forestall any admissions – and consider the cost savings attributable to that – is a very credible goal that we should continue to follow.” He pointed out that the technology enables assessments in the home environment for older patients who are less mobile.
In response to a press briefing question about the potential for physicians to be trained to hear early subtle voice changes on their own, Dr. Abraham stated, “I guess that is unknown, but the important difference is the system’s ability to take data in every day from patients and then process it automatically with AI.”
Joining in, Dr. Yancy said, “You know, this is interesting because even if you saw a patient once a month, which is an incredible frequency for any practice, there’s still 353 days that you haven’t seen the patient.” He noted that the AHA had just announced a multi-million dollar program to more deeply understand telemanagement. “So I think this is here to stay,” Dr. Yancy said.
Dr. Ouyang posed a further question. “Like with most AI recognition tools, we can now identify individuals at risk. How do we get from that step of identifying those at risk to improving their outcomes? This has been a critical question about heart failure, remote management, and remote monitoring, and I think it is a critical question for many of our AI tools.”
Dr. Abraham disclosed that he has received personal fees from Cordio Medical. Dr. Ouyang said that he had no disclosures relevant to this presentation.
Worsening heart failure is accompanied by a build-up of fluid in the lungs. An AI smartphone app that picks up changes in a heart failure patient’s voice quality caused by this fluid accumulation and then alerts the physician about them – nearly 3 weeks before that ongoing decompensation would necessitate hospitalization and/or lead the physician to urgently introduce intravenous diuretics – is getting experts to sit up and take notice.
“In this incredibly prevalent waxing and waning condition, finding ways to identify worsening heart failure to prevent hospitalization and progressive disease is incredibly important,” observed American Heart Association (AHA)-appointed discussant David Ouyang, MD, assistant professor, Smidt Heart Institute, Division of Artificial Intelligence in Medicine, Cedars Sinai, Los Angeles. “Heart failure remains among the most common causes of hospitalization for older adults in the United States.
“The other standout feature is that we all use our cell phones on a daily basis,” Dr. Ouyang said at a late-breaking trial press briefing at the AHA 2023 annual meeting where results of the HearO Community Study were presented. “The ability to capture data from routine speech (patients speak five sentences into their phones every morning) is remarkable ... The HearO® technology was able to detect a substantial proportion of worsening heart failure events, with an average per individual of only three false positives over the course of a year. And, adherence to the study protocol was 81%. That’s higher than in many other kinds of routine patient monitoring studies,” he added.
Accumulating fluid changes speech
(e.g., pharynx, velum, tongue, and vocal folds). In the Israeli study, investigators enrolled 416 adults (75% were male, average age was 68 years) whose New York Heart Association (NYHA) 2-3 heart failure with either reduced or preserved ejection fraction was stable but placed them at-risk for heart failure events. The study goal was to analyze their speech data using the HearO® system to refine and test its ability to detect impending heart failure deterioration. Patients recorded five sentences in their native language (Hebrew, Russian, Arabic, or English) into the smartphone app daily. In a training phase of the study, distinct speech measures from 263 participants were used to develop the AI algorithm. Then, the algorithm was used in the remaining 153 participants to validate the tool’s effectiveness. In its ultimate form, once a deviation from the patient’s predefined baseline is detected, the app will generate a notice and send it to the health care practitioners.
Lead study author William T. Abraham, MD, FAHA, professor of medicine, physiology, and cell biology; and a College of Medicine Distinguished Professor in the division of cardiovascular medicine at The Ohio State University in Columbus, reported that between Mar. 27, 2018, and Nov. 30, 2021, subjects in the training phase made recordings on 83% of days. They were followed for up to 44 months. The test group made recordings on 81% of days between Feb. 1, 2020, and Apr. 30, 2023, and were followed for up to 31 months. Heart failure events were defined as hospitalization or outpatient intravenous diuretic treatment for worsening heart failure.
In the training phase, the app accurately predicted 44 of 58 heart failure events (76%) and 81% of first events (n = 35) on average 24 days before hospitalization or need for intravenous fluids. In the validation phase, the app was 71% accurate in detecting 10 of 14 heart failure events and 77% of first events (n = 10) on average 26 days in advance of events. In both periods, the app generated about 3 unnecessary alerts per patient year.
Dr. Abraham concluded, “This technology has the potential to improve patient outcomes, keeping patients well and out of the hospital, through the implementation of proactive, outpatient care in response to voice changes.”
The HearO® technology is being evaluated in an ongoing pivotal trial in the United State4s, Dr. Abraham said. The study is limited, he added, by the small number of patients and heart failure events, particularly in the test group.
“We continue to struggle with the burden of heart failure morbidity,” observed AHA press briefing moderator (and past AHA president) Clyde Yancy, MD, Magerstadt Professor at Northwestern University, Chicago. “So any tool that we can utilize and further refine that helps us address the need for hospitalization becomes very important. The idea that speech evaluation might give us sufficient early warning to forestall any admissions – and consider the cost savings attributable to that – is a very credible goal that we should continue to follow.” He pointed out that the technology enables assessments in the home environment for older patients who are less mobile.
In response to a press briefing question about the potential for physicians to be trained to hear early subtle voice changes on their own, Dr. Abraham stated, “I guess that is unknown, but the important difference is the system’s ability to take data in every day from patients and then process it automatically with AI.”
Joining in, Dr. Yancy said, “You know, this is interesting because even if you saw a patient once a month, which is an incredible frequency for any practice, there’s still 353 days that you haven’t seen the patient.” He noted that the AHA had just announced a multi-million dollar program to more deeply understand telemanagement. “So I think this is here to stay,” Dr. Yancy said.
Dr. Ouyang posed a further question. “Like with most AI recognition tools, we can now identify individuals at risk. How do we get from that step of identifying those at risk to improving their outcomes? This has been a critical question about heart failure, remote management, and remote monitoring, and I think it is a critical question for many of our AI tools.”
Dr. Abraham disclosed that he has received personal fees from Cordio Medical. Dr. Ouyang said that he had no disclosures relevant to this presentation.
FROM AHA 2023