Study of Fluticasone Propionate MDPI Compared With Fluticasone/Salmeterol MDPI in Adolescent and Adult Patients With Persistent Asthma

Trough FEV1 was a morning spirometry taken predose and pre-rescue bronchodilator. If the patient inadvertently administered asthma medication/study drug at home on the AM of the visit, or if the patient took rescue medication within 6 hours of testing, the visit was rescheduled. The baseline for predose FEV1 was defined as the average of the 30-minute and 10-minute predose measurements obtained at the randomization visit (Day 1).

Time frame: Day 1 (predose, baseline), Week 12

Population: Full analysis set

A subset of approximately 300 patients who performed postdose serial spirometry is based on sample size calculation. Data from these assessments were used to analyze the primary endpoint of baseline adjusted FEV1 AUEC0-12h at week 12 using the trapezoidal rule based on actual time of measurement. It was standardized by dividing it by the number of hours between the start time of dose administration and the end time of the last nonmissing FEV1 measurement. The baseline FEV1 was the average of the 2 predose FEV1 measurements (30 and 10 minutes predose). If 1 of these was missing, the nonmissing value was used; if both were missing, baseline was treated as missing. Baseline-adjusted FEV1 was calculated as postdose FEV1 after subtracting the baseline FEV1 value.

Time frame: Day 1 (predose, baseline), Week 12 and was performed at the following times relative to the administration of study drug (±5 minutes): 15 and 30 minutes and 1, 2, 3, 4, 6, 8, 10, and 12 hours

Population: Full analysis set: a subset of patients who performed postdose serial spirometry at the baseline visit and week 12

The AQLQ(S) (September 2010 version; patients aged ≥18 years) was self-administered by the patients at the investigational center at the randomization visit and at Week 12 or end of trial. The questionnaire is a tool to measure the impact of asthma on a patient's quality of life (physical, emotional, social, and occupational) with a recall period of 2 weeks. The AQLQ(S) was administered only to patients 18 years and older. The 32 individual questions in the AQLQ were equally weighted. The overall AQLQ score was the mean of the responses to each of the 32 questions, and ranged from 1 to 7. A score of 7.0 indicated that the patient had no impairments due to asthma and a score of 1.0 indicated severe impairment. Positive change from baseline scores indicate improved quality of life.

Time frame: Day 1 (predose, baseline), end of trial (up to week 12)

Population: FAS patients who contributed at least once to analysis and were \>= 18 years old

Morning PEF tests were performed before administration of study drug or rescue medications (data were excluded if the time of PEF measurement was more than 5 minutes after the dose time). The patient recorded the highest value of 3 measurements obtained in the patient diary. The baseline PEF was the average value of recorded (nonmissing) morning assessments over the 7 days prior to randomization on Day 1. For efficacy analyses of weekly average morning PEF measurements, values were the averages based on available data for that week.

Time frame: Days -6 to Day 1 (predose), Day 1 (postdose) daily until Week 12

Population: Full analysis set of patients who contributed at least once to the analysis.

Patients recorded the number of inhalations of rescue medication (albuterol/salbutamol HFA MDI) each AM and PM in the diary. The average number of daily inhalations over the 7 days before the randomization visit was the baseline value. The weekly average was based on the available data for the 7 days before each analysis week. The change from baseline in the weekly average of total daily (24-hour) use of albuterol/ salbutamol inhalation aerosol (number of inhalations) over weeks 1 to 12 was analyzed using a mixed model for repeated measures.

Time frame: Days -6 to Day 1 (predose, baseline), up to week 12

Population: FAS of patients who contributed at least once to the analysis

The total daily asthma symptom score is the average of the daytime and nighttime scores as recorded in the patient diary (range 0-9). Daytime Symptom Score: 0=No symptoms 1. Symptoms for 1 short period 2. Symptoms for 2+ short periods 3. Symptoms for most of the day - did not affect normal daily activities 4. Symptoms for most of the day - did affect normal daily activities 5. Symptoms so severe that I could not go to work or perform normal daily activities Nighttime Symptom Score (determined in the AM): 0=No symptoms 1. Symptoms causing me to wake once (or wake early) 2. Symptoms causing me to wake twice or more (including waking early) 3. Symptoms causing me to be awake for most of the night 4. Symptoms so severe that I did not sleep Baseline was the average of recorded scores over the 7 days before randomization. The change from baseline in the weekly average over weeks 1 to 12 was analyzed using an mixed model for repeated measures (MMRM).

Time frame: Days -6 to Day 1 (predose, baseline) to Week 12

Population: Full analysis set of patients who contributed at least once to the analysis.

The analysis of probability of remaining in the study at Week 12 used the time to patient withdrawal for worsening asthma, defined as the number of days elapsed from the date of randomization to the date of withdrawal due to worsening asthma. Patients who were lost to follow-up, who had not withdrawn due to worsening asthma by week 12, or who had withdrawn due to reasons other than worsening asthma were right-censored at the date of last assessment.

Time frame: up to Week 12 of the Treatment Period

Population: FAS

A subset of approximately 300 patients who performed postdose serial spirometry is based on sample size calculation. Baseline FEV1 was the average of 2 FEV1 measurements (30 and 10 minutes predose) on Day 1. If one of these was missing, the other measurement was used as baseline value. If both were missing, baseline was treated as missing. Time to target improvement (15% or 12%) was defined as the time elapsed from the time of first dose to the first time the target improvement in FEV1 was achieved. If an exact target increase was not achieved at a measured timepoint, then the time was estimated by linear interpolation between the timepoint when target was reached and the timepoint immediately before. Patients who did not achieve the target improvement were censored at the time of last serial spirometry assessment. Values of 9999 indicate the values could not be estimated which happened when the estimated probability of not achieving target is more than 50%.

Time frame: Day 1 of the Treatment Period (predose and postdose)

Population: Full analysis set: a subset of patients who performed postdose serial spirometry on Day 1

An adverse event was defined as any untoward medical occurrence that develops or worsens in severity during the conduct of a clinical study and does not necessarily have a causal relationship to the study drug. Severity was rated by the investigator on a scale of mild, moderate and severe, with severe= an AE which prevents normal daily activities. Relationship of AE to treatment was determined by the investigator. Serious AEs include death, a life-threatening adverse event, inpatient hospitalization or prolongation of existing hospitalization, persistent or significant disability or incapacity, a congenital anomaly or birth defect, OR an important medical event that jeopardized the patient and required medical intervention to prevent the previously listed serious outcomes.

Time frame: Day 1 to Week 12 of the Treatment Period

Population: Safety population