FEV1 will be measured using spirometry.

FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Trough FEV1 on treatment is defined as the highest FEV1 value obtained prior to the morning dose of investigational product. Baseline value is the latest acceptable assessment with non-missing value at the randomization visit (Visit 2).

Pulmonary function was measured by FEV1, defined as the maximal amount of air that can be forcefully exhaled in one second using a standardized calibrated spirometer. Weighted mean FEV1 was derived using the post-dose assessments (after 30 minutes and 1, 2, 3, 4 hours) with their actual times and using the pre-dose assessment as the 0 hour measurement.

PEF was defined as the maximum speed of expiration of a participant. PEF was measured using a hand-held electronic peak flow meter each morning prior to the dose of study medication and any rescue albuterol/salbutamol inhalation aerosol use. The best of three measurements were recorded in the electronic patient diary. The mean morning PEF was calculated for each participant as an averaged mean over weeks 1-12 of the treatment period. Baseline was defined as the average of measurements with a non-missing value from Day -6 to Day 1 of pre-dose.

An adverse event (AE) is any untoward medical occurrence in clinical study participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. A SAE is defined as any untoward medical occurrence that, at any dose: result in death, life threatening, requires inpatient hospitalization or prolongation of existing hospitalization, results in persistent disability/incapacity, congenital anomaly/birth defect, other important medical events that may jeopardize the participant or require medical or surgical intervention to prevent one of the outcome mentioned before. Intent-To-Treat (ITT) Population comprised of all participants who received at least one dose of study treatment in the treatment period.

FEV1 is a measure of lung function and is defined as the maximal volume of air that can be forcefully exhaled in one second. Trough FEV1 on treatment is defined as the highest FEV1 value obtained prior to the morning dose of investigational product. Baseline value is the last acceptable/borderline acceptable pre-dose FEV1 prior to randomized treatment start date (pre-dose at Day 1). Change from Baseline value is the value at Week 24 minus the Baseline value. Intent-to-Treat (ITT) Population comprised of all randomized participants, excluding those who were randomized in error, who did not receive the study drug. Treatment policy estimand was assessed, including all on- and post-treatment data. Different participants may have been analyzed at different time points; thus, overall number of participants analyzed reflects everyone in ITT Population without missing covariate information, with Baseline and at least one post-baseline measurement. Mixed Model Repeated Measures(MMRM) was used.

The blood samples for statistical analysis of serum cortisol (SC) endpoints were collected on D 0 and D 42 at the indicated time points. The weighted mean was calculated by dividing the area under the curve (AUC) over the 24-hour (hr) time period by the time period. Change from Baseline in 0-24 hr weighted mean SC was calculated as a ratio from Baseline defined as the SC weighted mean (0-24 hours) at Week 6 divided by the Baseline SC weighted mean (0-24 hours).The ratio from Baseline was loge transformed prior to analysis. The loge transformed ratios were compared between treatment groups as treatment ratios, using an analysis of covariance (ANCOVA) model, allowing for the effects of Baseline (loge transformed), age, sex and region. Treatment ratios for comparison was calculated by back-transforming the difference between the Least square (LS) means. Using the pooled estimate of variance, 95% Confidence Intervals (CIs) was calculated for the difference.

The blood samples for statistical analysis of serum cortisol (SC) endpoints were collected on D0 and D42 at indicated time points. The weighted mean was calculated by dividing the area under curve (AUC) over the 24-hr time period by time period. Change from Baseline in 0-24 hr weighted mean SC was calculated as a ratio from baseline defined as SC weighted mean (0-24 hrs) at Wk 6 divided by the baseline SC weighted mean (0-24 hrs). The ratio as treatment ratios, using an analysis of covariance (ANCOVA) model, allowing for the effects of baseline (loge transformed from baseline was loge transformed prior to analysis. The loge transformed ratios were compared between treatment groups), age, sex and region. Treatment ratios for comparison was calculated by back-transforming the difference between Least square (LS) means. Using the pooled estimate of variance, 95% CIs) was calculated for the difference.

FEV1 is a lung function measure defined as the maximal amount of air that can be forcefully exhaled in one second. Highest FEV1 from the 3 acceptable spirometric efforts were recorded between 5.00 ante meridiem (AM) and 11.00 AM after withholding albuterol (salbutamol) at all visits for at least 4 hours. Baseline was defined as the pre- dose FEV1 value obtained on Day 1 and trough was defined as FEV1 value obtained 24 hours after morning dosing on Day 14 of each treatment period. Change from baseline value for each participant in each treatment period was the difference between the observed on-treatment value obtained 24 hours after morning dosing on Day 14 and the baseline value for that period. Slope-intercept on log dose model was used to predict trough FEV1 change from baseline for each of the FF+UMEC doses adjusted by FF 100 mcg alone. Mean value for the expected response and associated 95% confidence interval (CI) in change from baseline trough FEV1 is presented.

FEV1 is a lung function measure defined as the maximal amount of air that can be forcefully exhaled in one second. Highest FEV1 from the 3 acceptable spirometric efforts were recorded between 5.00 AM and 11.00 AM after withholding albuterol (salbutamol) at all visits for at least 4 hours. Baseline was defined as the pre- dose FEV1 value obtained on Day 1 and trough was defined as FEV1 value obtained 24 hours after morning dosing on Day 14 of each treatment period. Change from baseline value for each participant in each treatment period was the difference between the observed on-treatment value obtained 24 hours after morning dosing on Day 14 and the baseline value for that period. Data is presented as percentage chance that FF 100 mcg alone corrected change from baseline trough FEV1 response would exceed a target response of 50 mL, 75 mL, 100 mL and 150 mL by doses of UMEC combined with FF 100 mcg.

FEV1 is a lung function measure defined as the maximal amount of air that can be forcefully exhaled in one second. The highest FEV1 from the 3 acceptable spirometric efforts were recorded between 5.00 AM and 11.00 AM after withholding albuterol (salbutamol) at all visits for at least 4 hours. Baseline was defined as the pre- dose FEV1 value obtained on Day 1 and trough was defined as the FEV1 value obtained 24 hours after morning dosing on Day 14 of each treatment period. The change from baseline value for each participant in each treatment period was the difference between the observed on-treatment value obtained 24 hours after morning dosing on Day 14 and the baseline value for that period. Analysis was done using a mixed model, including treatment, period, period baseline FEV1, and mean baseline FEV1 as fixed effects and participant as a random effect. A post hoc analysis was performed to confirm nullification of carry over effect of UMEC.

Pulmonary function was measured by FEV1, defined as the maximal amount of air that can be forcefully exhaled in one second. FEV1 was measured electronically by spirometry at Day 14. Weighted mean FEV1 was calculated using the Day 14 24-hour serial FEV1 measurements taken at the following time points: pre-dose (Day 14 evening dose), and 3, 6, 9, 12, 15, 18, 21 and 24 hours post-dose (measured in the evening of Day 15). At each time point, the highest of 3 technically acceptable measurements was recorded. The analysis was performed using a mixed effects analysis of covariance model with fixed effect terms for treatment and period; and participant (par.) baseline, period baseline, gender and age fitted as covariates; and par. as a random effect. Par. 122 received FF/VI 100/25 PM in treatment periods 1 and 3 and contributed twice to the summary of FF/VI 100/25 PM (n=25). Par. 123 received Placebo in treatment periods 2 and 3 and contributed twice to the summary of Placebo (n=20).

Forced expiratory volume in one second (FEV1) is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Participants were exposed to an allergen (administered by inhalation) 1 hr after dosing on Day 21. Minimum FEV1 over 4-10 hours post-allergen challenge (minimum LAR) is the minimum value of all of the post-saline time points between 4 and 10 hrs post-allergen challenge, inclusive of the 4 hr and 10 hr timepoints (i.e., minimum over 4 hrs, 4.5 hrs, 5 hrs, 5.5 hrs, 6 hrs, 6.5 hrs, 7 hrs, 7.5 hrs, 8 hrs, 8.5 hrs, 9 hrs, 9.5 hrs, and 10 hrs). Absolute change from saline in minimum FEV1 was calculated as the minimum FEV1 minus the saline FEV1 value. After inhalation of saline, 3 single measurements of FEV1 were recorded; the maximum FEV1 value was taken as the saline value. Least squares means were obtained by adjusting for period and participant and period Baselines.

FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Participants were exposed to an allergen 1 hour after dosing on Day 21. LAR FEV1 was measured 4 hrs, 4.5 hrs, 5 hrs, 5.5 hrs, 6 hrs, 6.5 hrs, 7 hrs, 7.5 hrs, 8 hrs, 8.5 hrs, 9 hrs, 9.5 hrs, and 10 hrs post-allergen challenge on Day 21. Absolute change from saline in WM FEV1 was calculated as the area under the curve divided by the relevant time interval and subtracting the saline FEV1 value. After inhalation of saline, 3 single measurements of FEV1 were recorded; the maximum FEV1 value was taken as the saline value. Least squares means were obtained by adjusting for period and participant and period Baselines.

FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Participants were exposed to an allergen 1 hr after dosing on Day 21. Minimum FEV1 over 0-2 hrs post-allergen challenge (Minimum EAR) is the minimum value of all of the post-allergen challenge timepoints up to and including 2 hours post-allergen challenge (i.e., minimum over 5 minutes (min), 10 min, 15 min, 20 min, 30 min, 45 min and 1 hr, 1.5 hrs, and 2 hrs. Absolute change from saline in minimum FEV1 was calculated as the minimum FEV1 minus the saline FEV1 value. After inhalation of saline, 3 single measurements of FEV1 were recorded; the maximum FEV1 value was taken as the saline value. Least squares means were obtained by adjusting for period and participant and period Baselines.

FEV1 is a measure of lung function and is defined as the maximal amount of air that can be forcefully exhaled in one second. Participants were exposed to an allergen 1 hr after dosing on Day 21. The EAR FEV1 was measured 0 minutes (min), 5 min, 10 min, 15 min, 20 min, 30 min, 45 min, 1 hr, 1.5 hrs, and 2 hrs post-allergen challenge on Day 21. Least squares means were obtained by adjusting for period and participant and period Baselines. Absolute change from saline in WM FEV1 was calculated as the area under the curve divided by the relevant time interval and subtracting the saline FEV1 value. After inhalation of saline, 3 single measurements of FEV1 were recorded; the maximum FEV1 value was taken as the saline value.

Change from baseline in FEV1 at 15, 30 minutes, 1, 2, 4, 12, 24, 36, 48, 60 and 72 hours post dose. Day 1 Baseline will be defined as Day 1 pre dose measurement for FEV1 for each treatment period.

The PK parameter Cmax will be calculated for FF/UMEC in combination and as monotherapies

The PK parameter AUC(0-t) will be calculated for will be calculated for FF/UMEC in combination and as monotherapies

The PK parameter AUC(0-inf) will be calculated for will be calculated for FF/UMEC in combination and as monotherapies

The FF and UMEC PK parameter in plasma will be calculated to compare the PK of FF/UMEC in combination with FF and UMEC monotherapies

The FF and UMEC PK parameter in plasma will be calculated to compare the PK of FF/UMEC in combination with FF and UMEC monotherapies

The FF and UMEC PK parameter in plasma will be calculated to compare the PK of FF/UMEC in combination with FF and UMEC monotherapies

The FF and UMEC PK parameter in plasma will be calculated to compare the PK of FF/UMEC in combination with FF and UMEC monotherapies

The FF and UMEC PK parameter in plasma will be calculated to compare the PK of FF/UMEC in combination with FF and UMEC monotherapies

The FF and UMEC PK parameter in plasma will be calculated to compare the PK of FF/UMEC in combination with FF and UMEC monotherapies

The UMEC PK parameter in urine will be calculated to compare the PK of UMEC when co-administered with FF; with UMEC as a monotherapy

The UMEC PK parameter in urine will be calculated to compare the PK of UMEC when co-administered with FF; with UMEC as a monotherapy

The UMEC PK parameter in urine will be calculated to compare the PK of UMEC when co-administered with FF; with UMEC as a monotherapy

The UMEC PK parameter in urine will be calculated to compare the PK of UMEC when co-administered with FF; with UMEC as a monotherapy

The PK parameter AUC(0-t') will be calculated for will be calculated for FF/UMEC in combination and as monotherapies

FF pharmacokinetics; area under the concentration-time curve from time zero (pre-dose) extrapolated to infinite time (AUC (0-infinity)), area under the concentration-time curve from zero (pre-dose) to 24 h (AUC (0-24)) and maximum observed concentration (Cmax). Blood samples for PK analysis of FF will be collected and analysis will be performed. Concentrations of FF will be determined in plasma samples using the currently approved analytical methodology.