Bronchial thermoplasty for asthma treatment

Abstract

New asthma therapies such as omalizumab, mepolizumab and reslizumab are used according to the inflammatory phenotype, but there are many patients with asthma which are not suitable for these therapies or do not improve with these therapies. Bronchial thermoplasty (BT) was approved by FDA for the treatmet of adults with severe asthma and uncontrolled symptoms despite treatment with inhaler corticosteroids (ICS) and long-acting bronchodilators in 2010. BT is a minimally invasive bronhoscopic intervention based on radiofrequency energy delivery to the larger airways to reduce excessive airway smooth muscle mass. BT has been shown to be effective at reducing asthma exacerbations and improving asthma control for patients with severe asthma. BT is safe for 5 years after BT in patients with severe refractory asthma. BT may be primarily preferred for patients with nonallergic, non-eosinophilic (non-TH2) severe asthma not improving with standart treatments. Unfortunately, the mechanism of action of BT is incompletely understood. Uncertainty remains how to identify patients who will responde to this intervention. Several studies are underway that may show the place of BT in severe asthma and identify responders. There is also a need for studies comparing BT with other treatment options. This review will provide an overwiew of BT. We will discuss the latest evidence on the use of BT in asthma, patient selection criteria and performing the procedure will be reviewed.