A Pilot Study Testing the Effect of Ivacaftor on Lung Function in Subjects With Cystic Fibrosis, Residual CFTR Function, and FEV1 ≥40% Predicted
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 24
- 主要终点
- Cycle 1 and Cycle 2: Absolute Change From Cycle Baseline In Percent Predicted Forced Expiratory Volume In 1 Second (FEV1) After 2 Weeks of Treatment
研究概览
简要总结
This study is a multiple within participant crossover study to evaluate the effect of ivacaftor on lung function in participants aged 12 years and older with cystic fibrosis (CF) who have phenotypic or molecular evidence of residual CF transmembrane conductance regulator (CFTR) function.
详细描述
CFTR Mutations associated with residual function or defective messenger ribonucleic acid (mRNA) splicing include the following:
R117H, E56K, P67L, D110E, D110H, R117C, R347H, R352Q, A455E, D579G, S945L, L206W, R1070W, F1074L, D1152H, S1235R, D1270N, 2789+5G->A, 3849+10kbC->T, 3272-26A->G, 711+5G->A, 3120G->A, 1811+1.6kbA->G, 711+3A->G, 1898+3A->G, 1898+1G->A, 1717-1G->A, 1717-8G->A, 1342-2A->C, 405+3A->C, 1716G/A 1811+1G->C, 1898+5G->T, 3850-3T->G, IVS14b+5G->A, 1898+1G->T, 4005+2T->C, 621+3A->G, 621+1G->T.
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, Care Provider)
入排标准
- 年龄范围
- 12 Years 至 —（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Male or female participants with confirmed diagnosis of CF
- •Clinical evidence of residual CFTR function based on any 1 of the following: 1) Clinically documented residual exocrine pancreatic function, 2) Sweat chloride value less than equal to (<=) 80 millimole per liter (mmol/L) at screening, or 3) Age of diagnosis greater than equal to (>=) 12 years and at least 1 copy of a CFTR mutation associated with residual CFTR function or defective mRNA splicing
- •FEV1 >= 40 percent (%)
- •12 years of age or older
- •Willing to agree to meet the contraception requirements
- •Able to swallow tablets
排除标准
- •A copy of any of the following CFTR mutations: G551D, G178R, S549N, S549R, G551S, G970R, G1244E, S1251N, S1255P, or G1349D
- •Unable to perform spirometry
- •An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy (including antibiotics) for pulmonary disease within 4 weeks before Day 1
- •Ongoing participation in another therapeutic clinical study or prior participation in an investigational drug study within the 30 days prior to screening
研究组 & 干预措施
Ivacaftor, Placebo, Ivacaftor, Placebo (IPIP)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Ivacaftor (Drug)
Ivacaftor, Placebo, Ivacaftor, Placebo (IPIP)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Placebo-matched-to-ivacaftor tablet (Drug)
Ivacaftor, Placebo, Placebo, Ivacaftor (IPPI)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Ivacaftor (Drug)
Ivacaftor, Placebo, Placebo, Ivacaftor (IPPI)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Placebo-matched-to-ivacaftor tablet (Drug)
Placebo, Ivacaftor, Ivacaftor, Placebo (PIIP)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Ivacaftor (Drug)
Placebo, Ivacaftor, Ivacaftor, Placebo (PIIP)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Placebo-matched-to-ivacaftor tablet (Drug)
Placebo, Ivacaftor, Placebo, Ivacaftor (PIPI)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Ivacaftor (Drug)
Placebo, Ivacaftor, Placebo, Ivacaftor (PIPI)
During the Crossover Period, study drug was administered in 2-week alternating cycles with a minimum of 4-week washout period between Cycle 1 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and Cycle 2 [(Period 1 - Day 1 to 14) (Period 2 - Day 15 to 29)] and between Cycle 2 and the Open-label Period (Day 1 to 57). During the Open-label Period, all participants received ivacaftor.
干预措施: Placebo-matched-to-ivacaftor tablet (Drug)
结局指标
主要结局
Cycle 1 and Cycle 2: Absolute Change From Cycle Baseline In Percent Predicted Forced Expiratory Volume In 1 Second (FEV1) After 2 Weeks of Treatment
时间窗: Cycle 1 baseline, Cycle 1 Day 15 (for Cycle 1 reporting arms); Cycle 2 baseline, Cycle 2 Day 15 (for Cycle 2 reporting arms)
FEV1 is the volume of air that can forcibly be blown out in one second, after full inspiration. Hankinson and Wang standards were used to calculate percent predicted FEV1 (for age, gender, and height). The Hankinson standard was used for male participants 18 years and older and female participants 16 years and older. The Wang standard was used for male participants aged 12 to 17 years and for female participants aged 12 to 15 years. Data was to be reported for each cycle (Cycle 1 and Cycle 2) and as per drug treatment, for overall participants and as per genotype (residual function mutation and mRNA splice site mutation).
次要结局
- Cycle 1 and Cycle 2: Absolute Change From Cycle Baseline In Lung Clearance Index (LCI) After 2 Weeks of Treatment(Cycle 1 baseline, Cycle 1 Day 15 (for Cycle 1 reporting arms); Cycle 2 baseline, Cycle 2 Day 15 (for Cycle 2 reporting arms))
- Open-label Period: Absolute Change From Open-label Baseline In Lung Clearance Index (LCI) at Day 57(Open-label Baseline, Open-label Day 57)
- Open-label Period: Absolute Change From Open-label Baseline In Weight at Day 57(Open-label Baseline, Open-label Day 57)
- Open-label Period: Absolute Change From Study Baseline In Sweat Chloride at Day 57(Study Baseline, Open-label Day 57)
- Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)(From first dose of study drug through completion of follow-up visit (up to 26 weeks))
- Open-label Period: Absolute Change From Open-label Baseline In Percent Predicted Forced Expiratory Volume In 1 Second (FEV1) at Day 57(Open-label Baseline, Open-label Day 57)