This is a phase 3 non-inferiority, randomized, open-label study with active control to compare the efficacy and safety of a fixed-dose triple combination to another triple combination with already established efficacy in subjects with symptomatic chronic obstructive pulmonary disease (COPD).
This study will be conducted in two stages. Study Step 1 The primary assessment of non-inferiority will be performed after 12 weeks of treatment by assessing FEV1 (Forced expiratory volume in the first second) in relation to baseline.
Study Step 2 In a second step, it will be assessed whether the benefits of the new triple combination on respiratory symptoms and health-related quality of life are sustained in the long term and to determine the annual rate of flares in 52 weeks of treatment.
The study will comprise a screening phase, consisting of a screening and run-in visit lasting up to 14 days, and a treatment phase in which, after collecting baseline data (which includes assessment of FEV1 (Forced expiratory volume in the first second) and quality of life through a questionnaire), participants will be randomized and begin their respective treatments.
Visits during Step 1 of treatment will be performed at weeks 4 and 12. The week 12 visit will be the primary endpoint visit.
After 12 weeks, Step 2 of the study will begin with all participants who completed Step 1 and who agreed to remain in the study to receive Eurofarma's experimental drug for up to 52 weeks. Visits during this step will be performed at weeks 24, 36 and 52 to assess safety, quality of life, lung function and flare rate (exploratory endpoints).
