RecruitingPhase 2Drug trialA Phase IIb Ensifentrine-glycopyrrolate Fixed-dose Combination Dose Ranging Study in Subjects With COPDThis study will assess the safety and efficacy of fixed dose combinations of ensifentrine with two different glycopyrrolate dose levels compared to placebo and to the individual components of the fixed dose combinations, each administered twice a day via standard jet nebulizer, in adult subjects with chronic obstructive pulmonary disease (COPD).