A double blind, double dummy, randomised, multicentre, two arm parallel group study to assess the efficacy and safety of FLUTIFORM® pMDI (2 puffs bid) vs Seretide® pMDI (2 puffs bid) in subjects aged ≥12 years with moderate to severe persistent, reversible asthma.
The primary objective is to show non-inferiority in the efficacy of FLUTIFORM ® pMDI (2 puffs bid) versus Seretide® pMDI (2 puffs bid) based on the change from the pre-dose forced expiratory volume in the first second (FEV1) at baseline to 2 hours post-dose FEV1 at Week 12.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
330
See above
See above
China-Japanese Friendship Hospital
Beijing, Beijing Municipality, China
RECRUITINGThe primary efficacy endpoint is the change in pre dose Forced Expiratory Volume in one second (FEV1) from baseline to 2-hours post dose FEV1 at Week 12.
The change in pre-dose FEV1 from baseline to the 2-hours post dose FEV1 values at Week 12 will be analysed using a repeated measures ANCOVA model with fixed terms for treatment, baseline pre-dose FEV1, asthma severity, dose group, week and treatment by week interaction, and centre as a random effect. The statistical model will be used to calculate the treatment difference for the change in pre-dose FEV1 to 2 hours post-dose FEV1 at Week 12 (FLUTIFORM® - Seretide), corresponding 95% CI and p-value from the one-sided test for non-inferiority.
Time frame: 12 weeks
The key secondary efficacy endpoint is the change in pre dose FEV1 from baseline to pre dose FEV1 at Week 12.
The change in pre dose FEV1 from baseline to the pre dose FEV1 values at Week 12 will be analysed using a repeated measures ANCOVA model with fixed terms for treatment, baseline pre dose FEV1, asthma severity, dose group, week and treatment by week interaction, and centre as a random effect. The statistical model will be used to calculate the treatment difference for the change in pre-dose FEV1 from baseline at Week 12 (FLUTIFORM® - Seretide), corresponding 95% CI and p-value from the test for non-inferiority. Non-inferiority will be concluded if the lower limit of the 95% CI is greater than or equal to -200ml.
Time frame: 12 weeks
The change in pre dose FEV1 from baseline to 2-hours post dose FEV1 at Week 2 and Week 6
The change in pre-dose FEV1 from baseline to the 2-hours post dose FEV1 values at baseline (post-IMP), Week 2 and Week 6 will be analysed using a repeated measures ANCOVA model with fixed terms for treatment, baseline pre-dose FEV1, asthma severity, dose group, week and treatment by week interaction, and centre as a random effect. The statistical model will be used to calculate the treatment difference for the change in pre-dose FEV1 to 2 hours post-dose FEV1 at Week 2 and Week 6 (FLUTIFORM® - Seretide), corresponding 95% CI and p-value from the one-sided test for non-inferiority.
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Time frame: 2 weeks,6 weeks
The change in pre dose FEV1 from baseline to pre dose FEV1 at Week 2 and Week 6
The change in pre dose FEV1 from baseline to the pre dose FEV1 values at Week 2 and Week 6 will be analysed using a repeated measures ANCOVA model with fixed terms for treatment, baseline pre dose FEV1, asthma severity, dose group, week and treatment by week interaction, and centre as a random effect. The statistical model will be used to calculate the treatment difference for the change in pre-dose FEV1 from baseline at Week 2 and Week 6 (FLUTIFORM® - Seretide), corresponding 95% CI and p-value from the test for non-inferiority. Non-inferiority will be concluded if the lower limit of the 95% CI is greater than or equal to -200ml.
Time frame: 2 weeks,6 weeks
The number and percentage of subjects who discontinue due to lack of efficacy will be summarised for each treatment group
The Odds Ratio for Seretide versus Flutiform, corresponding 95% CI and p-value will be presented
Time frame: up to 12 weeks
Change from baseline in daily morning and evening peak expiratory flow rate (PEFR) at Week 2, 6 and 12 and on average during the 12 week treatment period.
Morning and evening PEFR data obtained from the last 7 days prior to each visit will further be averaged for each subject to get a mean value which corresponds to the respective scheduled visit. The calculated morning and evening PEFR values at baseline, Week 2, Week 6 and Week 12 and change from baseline at each time point will be summarized by treatment group as continuous data.
Time frame: 2 weeks, 6 weeks, 12 weeks
Change from baseline in other lung function parameters (PEFR) at Week 2, Week 6 and Week 12.
The other in-clinic lung function (PEFR) values assessed at each time-point (baseline, Week 2, Week 6, Week 12 and end of study), and the change from baseline to each post-baseline time-point will be summarised by treatment group as continuous data. These lung function values will be analysed using the same methodology applied to the primary and key secondary endpoint, for change in pre- and 2 hour post-dose lung function, respectively.
Time frame: 2 weeks, 6 weeks, 12 weeks
Change from baseline in other lung function parameters (FVC) at Week 2, Week 6 and Week 12.
The other in-clinic lung function (FVC) values assessed at each time-point (baseline, Week 2, Week 6, Week 12 and end of study), and the change from baseline to each post-baseline time-point will be summarised by treatment group as continuous data. These lung function values will be analysed using the same methodology applied to the primary and key secondary endpoint, for change in pre- and 2 hour post-dose lung function, respectively.
Time frame: 2 weeks, 6 weeks, 12 weeks
Change from baseline in other lung function parameters (FEF25-75) at Week 2, Week 6 and Week 12.
The other in-clinic lung function (FEF25-75) values assessed at each time-point (baseline, Week 2, Week 6, Week 12 and end of study), and the change from baseline to each post-baseline time-point will be summarised by treatment group as continuous data. These lung function values will be analysed using the same methodology applied to the primary and key secondary endpoint, for change in pre- and 2 hour post-dose lung function, respectively.
Time frame: 2 weeks, 6 weeks, 12 weeks
Change in asthma symptom scores from baseline at Week 2, 6, and 12 and on average during the 12 week treatment period.
Asthma symptom scores obtained from the last 7 days prior to each visit will further be averaged for each subject to get a mean value which corresponds to the respective scheduled visit. The calculated asthma symptom score values at baseline, Week 2, Week 6 and Week 12 and change from baseline at each time point will be summarized by treatment group as continuous data.
Time frame: 2 weeks, 6 weeks, 12 weeks
Change in sleep disturbance scores from baseline at Week 2, 6, and 12 and on average during the 12 week treatment period
Sleep disturbance scores obtained from the last 7 days prior to each visit will further be averaged for each subject to get a mean value which corresponds to the respective scheduled visit. The calculated sleep disturbance score values at baseline, Week 2, Week 6 and Week 12 and change from baseline at each time point will be summarized by treatment group as continuous data.
Time frame: 2 weeks, 6 weeks, 12 weeks
Change in percentage of asthma control days from baseline at Week 2, 6, and 12 and on average during the 12 week treatment period.
Asthma control days will be defined as an asthma symptom score of 0 (no symptoms), a sleep disturbance score of 0 (slept through the night) and no inhalations of rescue medication. Asthma control scores obtained from the last 7 days prior to each visit will further be averaged for each subject to get a mean value which corresponds to the respective scheduled visit. The calculated percentage of asthma control days at baseline, Week 2, Week 6 and Week 12 and change from baseline at each time point will be summarized by treatment group as continuous data.
Time frame: 2 weeks, 6 weeks, 12 weeks
Proportion of patients achieving well controlled asthma [ ACQ(Asthma Control Questionnaire) score ≤ 0.75 units] at Week 12.
The number and percentage of subjects achieving well controlled asthma (ACQ score ≤ 0.75 units) at Week 12 will be summarised by treatment group. The data will be analysed using logistic regression with fixed terms for treatment, baseline ACQ score, asthma severity, dose group and centre as a random effect. The Odds Ratio for Seretide versus Flutiform, corresponding 95% CI and p-value will be presented. Subjects with missing data at Week 12 will be considered as subjects not achieving well controlled asthma for the purpose of analysis.
Time frame: 12 weeks
Change in asthma control questionnaire (ACQ) score from baseline to Week 2 and Week 12.
The ACQ questionnaire at each time-point (baseline, Week 2, Week 12 and end of study) and the change from baseline to each post-baseline time-point will be summarised by treatment group as continuous data.
Time frame: 2 weeks,12 weeks
Proportion of subjects achieving a decrease from baseline to Week 12 in ACQ(Asthma Control Questionnaire) score ≥ 0.5 units.
The number and percentage of subjects achieving a decrease from baseline to week 12 of ≥ 0.5 ACQ units will be summarised by treatment group. The data will be analysed using logistic regression with fixed terms for treatment, baseline ACQ score, asthma severity, dose group and centre as a random effect. The Odds Ratio for Seretide versus Flutiform, corresponding 95% CI and p-value will be presented. Subjects with missing data at Week 12 will be considered as subjects without a decrease of ≥ 0.5 ACQ units for the purpose of analysis.
Time frame: 12 weeks
Change in average number of occasions of daily rescue medication (salbutamol) use from baseline during the 12 week treatment period.(salbutamol) will as assessed based on subject diaries records
The mean number of occasions per day will be calculated from the subject diaries for the 12 week treatment and baseline period. For the baseline value, data from the last 7 days prior to first IMP intake will be used. The mean number of occasions per day during baseline and the 12 week treatment period and the change from baseline during the treatment period will be summarized treatment group as continuous data.
Time frame: 12 weeks
Asthma exacerbations (incidence of subjects with at least one treatment emergent asthma exacerbation and time to first treatment emergent asthma exacerbation).
Asthma exacerbations will be analyzed using two different data sources: 1. Based on exacerbations documented in the CRF by the investigator 2. Programmatically derived from the diary data and relevant CRF pages Analyses on exacerbations documented by the investigator on the CRF will be considered the main analyses. Analyses on exacerbations obtained programmatically from the diary data will be considered as supportive analyses.
Time frame: 12 weeks