Results from Evaluation of Real-World Patients Presented at American Thoracic Society International Conference
MARLBOROUGH, Mass., May 24, 2017 /PRNewswire/ — Boston Scientific (NYSE: BSX) today announced positive results from the Post Approval Clinical Trial Evaluating Bronchial Thermoplasty (BT) in Severe Persistent Asthma (PAS2) study evaluating patients treated with the Alair™ System. The data, presented at the American Thoracic Society International Conference in Washington, D.C., demonstrate that BT reduces complications in adult patients with severe persistent asthma.
PAS2 is an open-label study that enrolled 284 patients at 27 research centers in the United States and Canada. Study participants have asthma that is not well controlled by inhaled corticosteroids (ICS) and long-acting beta-agonists (LABA) and may also rely heavily on additional maintenance medications including oral corticosteroids (OCS) and biologics. At the beginning of the study, PAS2 study participants were, on average, 45.7 years old with a body mass index of 32.2 kg/m2, took mean ICS and LABA doses of 2275 μg/day and 106 μg/day, respectively, with 19.4 percent utilizing OCS and 15.8 percent omalizumab. These measures are significantly higher than in prior studies.
Overall, patients in the study showed marked clinical improvement that was sustained for two years following treatment. The data demonstrated that:
“The findings of the PAS2 study provide important real-world evidence that patients with poorly controlled severe asthma on high doses of medications, including biologics, experience significant and sustained improvements in asthma control following BT,” said Geoffrey Chupp, M.D., principal investigator and director, Yale Center for Asthma and Airways Disease, Yale University School of Medicine, New Haven, Connecticut. “These results reinforce previously published data from randomized controlled studies and demonstrate that BT delivered by the Alair System is both safe and effective for a wide range of patients with severe asthma.”
The Alair System for BT was approved by the U.S. Food and Drug Administration (FDA) in 2010 and is the first non-pharmacologic, device-based treatment for severe, persistent asthma. The Alair System delivers controlled thermal energy to the airway wall to reduce the amount of excess smooth muscle tissue in the airways. With less smooth muscle, the airways constrict less, reducing severe asthma attacks and making breathing easier.
“Bronchial Thermoplasty is an established treatment that can transform the lives of people with severe asthma,” said Art Butcher, senior vice president and president, Endoscopy, Boston Scientific. “We are committed to working with the healthcare community to ensure that patients with severe asthma have access to this important treatment option.”
Asthma is a chronic inflammatory disease of the airways characterized by recurrent attacks of breathlessness and wheezing, which vary in severity and frequency from person to person. Asthma currently affects more than 25 million people and approximately 10 percent of cases are considered severe.1,2 For those who suffer from severe asthma, even the highest dose of standard medications may not alleviate the risk of frequent and life-threatening asthma attacks. During an asthma attack, the lining of the bronchial tubes swell, causing the airways to narrow and reducing the flow of air in and out of the lungs.3