FEV1 was the volume of air exhaled in the first second of a forced expiration as measured by spirometer. The baseline 1-hour trough morning percent predicted FEV1 was defined as the predose trough morning percent predicted FEV1 measurement at the randomization visit (Baseline \[Day 1\]) at the investigational center. The IMP dose was administered right after the predose FEV1 measurement (within a 10 minute window). Participant then performed 1-hour (±10 minutes) postdose lung function assessments on Week 12 at the investigational center.

FEV1 was the volume of air exhaled in the first second of a forced expiration as measured by spirometer. Baseline trough morning percent predicted FEV1 was defined as the average value of recorded (nonmissing) morning assessments 5 out of the last 7 days prior to randomization. The first day before randomization consisted of the electronic patient diary entry at home on the morning of the randomization visit (Baseline \[Day 1\]) and the first day postrandomization consisted of the electronic patient diary entry at home on the morning of the day after the randomization visit (Baseline \[Day 1\]). For postdose weekly average of trough morning percent predicted FEV1 measurements, the values were the averages based on the available data for that week. The averages were calculated as the sum of morning FEV1 values divided by the number of nonmissing assessments.