BT delivered by the Alair™ System is clinically proven to be a safe and effective treatment for severe asthma, with long-lasting benefits
Asthma Intervention Research 2 (AIR2) Trial: In this trial, one of the largest sham-controlled medical device trials in pulmonary medicine, patients with severe asthma showed significant improvement compared to sham-controlled patients one year after treatment with BT.1
Proven to last at least 5 years
Reduction in percentage of patients experiencing exacerbations seen at 1 year maintained for at least 5 years (primary endpoint).2
Additionally, there was a 44% decrease (average over 5 years) in the percentage of BT-treated patients having severe exacerbations, compared with 12 months prior to BT treatment.2
Reduction in ER visits seen at 1 year maintained for at least 5 years.2
Additionally, there was a 78% decrease (average over 5 years) in the percentage of BT-treated patients experiencing ER visits for respiratory symptoms, compared with 12 months prior to BT treatment.2
Asthma experts around the world say BT is safe.
No increase was seen in hospitalizations, asthma symptoms, or respiratory adverse events over the course of 5 years in patients treated with Bronchial Thermoplasty delivered by the Alair System.2
No structural changes in the airways that were clinically significant were due to BT at 5 years.2
Absence of clinically significant deterioration in lung function (pre-bronchodilator FEV1) at 5 years.2
Robust clinical research for a non-drug therapy in severe asthma clearly demonstrates the long-lasting benefit of BT
Understand the risks of the Bronchial Thermoplasty procedure
BT has been published in a variety of well-known and respected peer reviewed journals
- Castro M, et al, for the AIR2 Trial Study Group. Am J Respir Crit Care Med. 2010;181:116-124.
- Wechsler M et al. J Allergy Clin Immunol. 2013 Dec;132(6):1295-302.
- Chupp G, et al. Eur Respir J. 2017;50:1700017.
- Castro M, et al, for the AIR2 Trial Study Group. Ann Allergy Asthma Immunol. 2011;107:65-70.
- Pavord I, et al, and the RISA Trial Study Group. Am J Respir Care Med. 2007;176:1185-1191.
- Cox G, et al. N Engl J Med. 2007;356:1327-1337.
- Thomson N, et al, for the AIR Trial Study Group. BMC Pulm Med. 2011;1-9.
- Cox G, et al. Am J Respir Crit Care Med. 2006;173:965-969.