A Multi-center, Randomized, Double-blind, Placebo-controlled, Five Period Cross-over Study to Evaluate the Efficacy and Safety of Selected Doses and Dose Intervals of GW642444 Administered Via a Novel Dry Powder Inhaler (NDPI) in Subjects ≥18 Years of Age With Persistent Asthma
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 75
- 试验地点
- 1
- 主要终点
- Change From Baseline in Trough (Pre-bronchodilator and Pre-dose) FEV1 on Day 7 of the Treatment Period
研究概览
简要总结
The study is a multi-center, double-blind, placebo-controlled, cross-over study to evaluate the efficacy and safety of selected doses and dose intervals of the novel long acting beta agonist (LABA), GW642444 in asthmatic subjects ≥18 years of age who are currently receiving inhaled corticosteroid treatment.
详细描述
The study will be a five-period cross-over study with each 7 day treatment period separated by a 7 day wash-out period. The study will enroll asthmatic subjects ≥18 years of age who are currently receiving inhaled corticosteroid treatment with an FEV1 of between 40-85% of predicted normal and with airway reversibility as demonstrated by an increase in FEV1 of ≥12% and ≥200ml .
Efficacy assessments include 24-hour serial lung function testing. Safety assessments include incidence of adverse events and measurement of vital signs.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Outpatient
- •≥18 years of age at Visit 1
- •Male or Eligible Female
- •Diagnosis of asthma at least 12 weeks prior to Visit 1
- •Disease reversibility
- •Current anti-asthma therapy
- •Appropriately signed and dated informed consent has been obtained
- •Able to comply with all the study requirements
排除标准
- •History of Life-Threatening Asthma
- •No use of systemic corticosteroids for any indication within 8 weeks prior to Visit
- •No concurrent diseases/abnormalities that would put the safety of the subject at risk through study participation
- •Drug Allergy to β2 agonist or sympathomimetic drugs, or known or suspected sensitivity to lactose or magnesium stearate
- •History of severe milk protein allergy
- •Non-compliance with study medication and other study-related requirements
- •No use of inhaled tobacco products within the past three months or historical use of 10 pack years or more
- •Administration of prohibited medications and non-drug therapies and corresponding timeframes as outlined in the protocol
研究组 & 干预措施
B/A/D/E/C
GW642444 Dose 1 BD/placebo/GW642444 Dose 3 QD/GW642444 Dose 4 QD/GW642444 Dose 2 QD
干预措施: Dose 1 BD (Drug)
C/E/A/B/D
GW642444 Dose 2 QD/GW642444 Dose 4 QD/placebo/GW642444 Dose 1 BD/GW642444 Dose 3 QD
干预措施: Dose 2 QD (Drug)
D/C/E/A/B
GW642444 Dose 3 QD/GW642444 Dose 2 QD/GW642444 Dose 4 QD/placebo/GW642444 Dose 1 BD
干预措施: Dose 3 QD (Drug)
A/B/C/D/E
placebo/GW642444 Dose 1 BD/GW642444 Dose 2 QD/GW642444 Dose 3 QD/GW642444 Dose 4 QD
干预措施: placebo (Drug)
E/D/B/C/A
GW642444 Dose 4 QD/GW642444 Dose 3 QD/GW642444 Dose 1 BD/GW642444 Dose 2 QD/placebo
干预措施: Dose 4 QD (Drug)
结局指标
主要结局
Change From Baseline in Trough (Pre-bronchodilator and Pre-dose) FEV1 on Day 7 of the Treatment Period
时间窗: Baseline and Day 7 of the treatment period (up to Study Day 63)
Pulmonary function was measured by forced expiratory volume in one second (FEV1), defined as the maximal amount of air that can be forcefully exhaled in one second. Trough FEV1 is defined as the mean of the FEV1 values obtained at the last two scheduled time points at the Day 7 clinic visit (i.e., 11 and 12 hours after the morning dose, or 23 and 24 hours after the evening dose). Change from Baseline was calculated as the Day 7 value minus the Baseline value. Analysis was performed using a mixed model analysis of covariance (ANCOVA) with fixed effects of treatment, period, sex, and age. Participants is fitted as a random effect, and the period Baseline measurement is included as part of a bivariate response. The model for the period Baseline value is not affected by treatment group.
次要结局
- Change From Baseline in Weighted Mean 24-hour FEV1 on Day 7 of the Treatment Period(Baseline and Day 7 of the treatment period (up to Study Day 63))