Study of Ivacaftor in Subjects With Cystic Fibrosis (CF) Who Have a Non-G551D CF Transmembrane Conductance Regulator (CFTR) Gating Mutation (KONNECTION)
Cystic Fibrosis
About this trial
This is an interventional treatment trial for Cystic Fibrosis
Eligibility Criteria
Inclusion Criteria:
- Male or female with confirmed diagnosis of CF
- At least 1 allele of the following CFTR gating mutations: G178R, S549N, S549R, G551S, G970R, G1244E, S1251N, S1255P, G1349D
- Percent predicted forced expiratory volume in 1 second (FEV1) greater than or equal to (>=) 40 percent (%) predicted normal for age, sex, and height
- 6 years of age or older
- Minimum weight of 15 kilogram (kg) at screening
- Females of childbearing potential must not be pregnant
- Willing to comply with contraception requirements
Exclusion Criteria:
- G551D-CFTR mutation on at least 1 allele
- History of any illness or condition that might confound the results of the study or pose an additional risk in administering ivacaftor to the subject
- An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy (including antibiotics) for pulmonary disease within 4 weeks before the first dose of study drug
- History of solid organ or hematological transplantation
- History of alcohol, medication or illicit drug abuse within 1 year before the first dose of study drug
- Ongoing participation in another therapeutic clinical study or prior participation in an investigational drug study within 30 days before screening
- Use of inhaled hypertonic saline treatment
- Use of any inhibitors or inducers of cytochrome (CYP) P450 3A
- Evidence of cataract or lens opacity at screening
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Experimental
Part 1: Ivacaftor First, Then Placebo
Part 1: Placebo First, Then Ivacaftor
Part 2: Ivacaftor
Ivacaftor 150 milligram (mg) tablet orally twice daily for 8 weeks in treatment period 1 followed by placebo matched to ivacaftor tablet orally twice daily for 8 weeks in treatment period 2. Washout out period of 4 to 8 weeks was maintained between each treatment period.
Placebo matched to ivacaftor tablet orally twice daily for 8 weeks in treatment period 1 followed by ivacaftor 150 mg tablet orally twice daily for 8 weeks in treatment period 2. Washout out period of 4 to 8 weeks was maintained between each treatment period.
Ivacaftor 150 mg tablet orally twice daily for 16 weeks.