A Comparison of PT027 vs PT007 Used as Needed in Participants With Asthma

This is a phase IIIb, multicenter, randomized, double-blind, parallel-group, event-driven, variable-length, decentralized study. Participants from around 40 to 50 centers located in the US will be screened and randomized 1:1 to receive one of the following two treatments to be used as needed: BDA MDI (160/180 μg) and AS MDI (180 μg). Participants 12 years of age and older with asthma will be recruited with all visits conducted virtually. Eligible participants must be using as-needed SABA (Short -acting β2agonist) alone, or as-needed SABA on a background of either low-dose ICS (Inhaled corticosteroid) or a LTRA (Leukotriene receptor agonist), for the treatment of asthma. Participants will be stratified by pre-study asthma medication (SABA only, low-dose ICS + SABA and LTRA + SABA) and number of prior severe exacerbations (0, ≥1) in the 12 months prior to the Screening visit.