Trial Outcomes & Findings for Efficacy and Safety Study of Fluticasone Proponate Inhalation Solution in Adult and Adolescent Asthma (NCT NCT01687283)

A total of 317 Chinese adults and adolescents aged \>= 17 years and \<= 70 years with severe persistent asthma were planned to be enrolled in study. This study was conducted from 27-September-2012 to 7-November-2013.

Out of 460 screened participants, 109 were screen failures and 34 were run-in failures. Out of 317 participants, two participants did not receive the study drug and 315 participants received the study drug.

Efficacy and Safety Study of Fluticasone Proponate Inhalation Solution in Adult and Adolescent Asthma

The peak expiratory flow (PEF) is a person's maximum speed of expiration, A peak flow meter was issued to participants at Visit 1 to measure the morning PEF prior to study drug and rescue medication. The best of three attempts was recorded by the participants in the diary cards. Baseline value was the assessment at Visit 2. The raw and change from baseline in daily AM PEF averaged over the 12-week treatment period The mean value was considered missing if less than 4 days were recorded in the baseline week prior to randomization or if less than 4 days are recorded after randomization. Analysis was performed using analysis of covariance (ANCOVA) model. Abbreviations used in statistical analysis section: standard deviation (SD) and significance (sig)

The peak expiratory flow (PEF) is a person's maximum speed of expiration, A peak flow meter was issued to participants at Visit 1 to measure the morning PEF prior to study drug and rescue medication. The best of three attempts was recorded by the participants in the diary cards. Baseline value was the assessment at Visit 2. The raw and change from baseline in daily AM PEF averaged over the 12-week treatment period The mean value was considered missing if less than 4 days were recorded in the baseline week prior to randomization or if less than 4 days are recorded after randomization. Analysis was performed using analysis of covariance (ANCOVA) model.

The peak expiratory flow (PEF) is a person's maximum speed of expiration, A peak flow meter was issued to participants at Visit 1 to measure the evening PEF prior to study drug and rescue medication. The best of three attempts was recorded by the participants in the diary cards. Baseline value was the assessment at Visit 2. The raw and change from baseline in daily PM PEF averaged over the 12-weeks treatment period.

While calculating symptom-free 24-hour periods, a given 24-hour period was set to be "symptom free" only if the participant's responses to both the morning and evening assessments indicated no symptoms. The Baseline value was Visit 2 assessment and was derived from the last 7 days of the daily diary prior to the randomization. Change from Baseline was calculated as the difference between the value of the endpoint at the time point of interest and the baseline value. The value provided in outcome measure data is a consolidated value over Weeks 1 to 12.

Participants recorded day-time symptom score every day in the morning and evening at bedtime before taking any rescue or study medication and before PEF measurement, using 6 point scale on Diary Card indicating 0 = No symptoms during the day and 5 =Symptoms so severe that participant could not go to work or perform normal daily activities. Night time symptoms were scored while waking in the morning on a scale of 0 (no symptoms) to 4 (severe). The value provided in outcome measure data is a consolidated value over Weeks 1 to 12.

While calculating rescue-free 24-hour periods, the 24-hour period was only set to be "rescue free" if responses to both the morning and evening, assessments indicated no use of rescue medication. If there were symptoms in either the morning or the evening then that 24-hour period was set to as "not symptom free". Similarly, if there was rescue medication use in either the morning or the evening, then that 24-hour period was set to as "not rescue free". The Baseline value was Visit 2 assessment and was derived from the last 7 days of the daily diary prior to the randomization. The value provided in outcome measure data is a consolidated value over Weeks 1 to 12.

Participants recorded the number of inhalations of rescue salbutamol inhalation aerosol used during the day and night. The baseline value was Visit 2 assessment and was derived from the last 7 days of the daily diary prior to the randomization. The analysis only included participants who had at least 2 days of non-missing numbers of times rescue medication (including zero) after randomization.

FEV1 as a measure of lung function assessment was measured at Week 2, 4, 8 and 12. FEV1 measures were performed electronically by spirometry. The highest of three technically acceptable measurements was recorded. FEV1 was measured prior to study drug administration and any rescue salbutamol use. Baseline value was the assessment at Visit 2.Change from baseline was calculated as the value at the specific time point minus baseline value.

Tmax is defined as the time to maximum observed plasma concentration. Blood Pharmacokinetic (PK) samples were taken on Visit 3 (Day 14±2) pre-dose, 0.5h, 1h, 2h, 3h, 4h, 6h, 8h and 12h post dose from participants. Blood sample for PK analysis, obtained within 72 hours of the last dose.

Cmax was defined as maximum observed plasma concentration. Blood PK samples were taken on Visit 3 (Day 14±2) pre-dose, 0.5h, 1h, 2h, 3h, 4h, 6h, 8h and 12h post dose from participants. Blood sample for PK analysis, obtained within 72 hours of last dose.

AUC (0-τ) was defined as the area under the plasma concentration-time curve for the dose interval. Blood PK samples were taken on Visit 3 (Day 14±2) pre-dose, 0.5h, 1h, 2h, 3h, 4h, 6h, 8h and 12h post dose from participants. Blood sample for PK analysis, obtained within 72 hours of last dose.