FEV1 is the amount of air which can be forcibly exhaled from the lungs in the first second of a forced exhalation, measured through spirometry testing.

The AQLQ is a 32-item asthma specific questionnaire designed to measure functional impairments that are most important to patients with asthma, with a recall time of two weeks and each question to be answered on a 7-point scale, where 1=totally limited/problems all the time and 7= not at all limited/no problems. It consists of 4 domains: symptoms, activity limitation, emotional funtion, and emotional stimuli. The overall score is calculated as the mean of 32 items. Higher AQLQ scores indicate better health-related quality of life.

An adverse event (AE) was any untoward medical occurrence (example; any unfavorable and unintended sign including abnormal laboratory findings, symptom or disease) in a participant or clinical investigation participant after providing written informed consent for participation in the study until the end of study visit. TEAEs were defined as adverse events started on or after the time of the first inhalation of study drug but no later than 7 days after the last administration (30 days in the case of SAEs). SAE was defined as any adverse event (appearance of \[or worsening of any pre-existing\]) undesirable sign, symptom or medical conditions which is fatal or life-threatening or results in persistent or significant disability/incapacity or constitutes a congenital anomaly/birth defect or requires inpatient hospitalization or prolongation of existing hospitalization or is medically significant.