A Study to Evaluate the Safety and Efficacy of VX-371 in Subjects With Cystic Fibrosis Who Are Homozygous for the F508del-CFTR Mutation
Cystic Fibrosis
About this trial
This is an interventional treatment trial for Cystic Fibrosis
Eligibility Criteria
Inclusion Criteria:
- Willing and able to use the delivery device as directed by the study manual.
- Confirmed diagnosis of CF, defined as a sweat chloride value ≥60 mmol/L by quantitative pilocarpine iontophoresis.
- Homozygous for the F508del CFTR mutation. If the CFTR screening genotype result is not received before randomization, a previous CFTR genotype lab report may be used to establish eligibility.
- Percent predicted forced expiratory volume at one second (FEV1) of ≥40 to <90 percentage points adjusted for age, sex, and height according to the Global Lung Initiative (GLI) at the Screening Visit.
- Willing to discontinue physician-prescribed saline use.
- Female subjects of childbearing potential with a negative serum pregnancy test at the Screening Visit.
Exclusion Criteria:
- History of any comorbidity, which in the opinion of the investigator, might confound the results of the study or pose an additional risk in administering study drug to the subject.
- Any clinically significant laboratory abnormalities at the Screening Visit that would interfere with the study assessments or pose an undue risk for the subject.
- An acute upper or lower respiratory infection, pulmonary exacerbation, or changes in therapy (including antibiotics) for pulmonary disease within 28 days before Day 1 (first dose of study drug).
- A 12 lead ECG demonstrating QTcF >450 msec at the Screening Visit.
- History of solid organ or hematological transplantation.
- Used diuretics or renin-angiotensin aldosterone system antihypertensive drugs in the 28 days prior to Screening or an anticipated need for any of these medications during the study.
- Ongoing or prior participation in an investigational drug study within 30 days of the Screening Visit.
- Inability to withhold short-acting, long-acting, or once-daily, long-acting bronchodilator use for 4, 12, or 24 hours prior to clinic visit, respectively.
- History of significant intolerance to inhaled saline, or intolerance to the single dose of saline at Screening
- Known hypersensitivity or history of intolerance to Orkambi.
- Pregnant and nursing females.
- Subjects who have participated in Parion Sciences Study NCT02343445.
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Experimental
Sequence 1: VX-371 + Hypertonic Saline (HS), then HS
Sequence 2: HS, then VX-371 + HS
Sequence 3: VX-371 + Placebo, then Placebo
Sequence 4: Placebo, then VX-371 + Placebo
Participants received 85 microgram (mcg) VX-371 diluted in 3 milliliter (mL) 4.2 percent (%) HS through oral nebulized inhalation twice daily for 28 days (Day 1 to Day 28) in treatment period 1 followed by a 28 days washout period (Day 29 to Day 56) and then received 3 mL 4.2% HS through oral nebulized inhalation twice daily for 28 days (Day 57 to Day 84) in treatment period 2. Participants also received a stable dose of 2 tablets of Orkambi (lumacaftor 400 milligram (mg)/ivacaftor 250 mg) orally every 12 hours with fat-containing food throughout the study as part of their cystic fibrosis (CF) standard of care.
Participants received 3 mL 4.2% HS through oral nebulized inhalation twice daily for 28 days (Day 1 to Day 28) in treatment period 1 followed by a 28 days washout period (Day 29 to Day 56) and then received 85 mcg VX-371 diluted in 3 mL 4.2% HS through oral nebulized inhalation twice daily for 28 days (Day 57 to Day 84) in treatment period 2. Participants also received a stable dose of 2 tablets of Orkambi (lumacaftor 400 mg/ivacaftor 250 mg) orally every 12 hours with fat-containing food throughout the study as part of their CF standard of care.
Participants received 85 mcg VX-371 diluted in 3 mL 0.17% Saline (placebo) through oral nebulized inhalation twice daily for 28 days (Day 1 to Day 28) in treatment period 1 followed by a 28 days washout period (Day 29 to Day 56) and then received 3 mL 0.17% saline (placebo) through oral nebulized inhalation twice daily for 28 days (Day 57 to Day 84) in treatment period 2. Participants also received a stable dose of 2 tablets of Orkambi (lumacaftor 400 mg/ivacaftor 250 mg) orally every 12 hours with fat-containing food throughout the study as part of their CF standard of care.
Participants received 3 mL 0.17% saline (placebo) through oral nebulized inhalation twice daily for 28 days (Day 1 to Day 28) in treatment period 1 followed by a 28 days washout period (Day 29 to Day 56) and then received 85 mcg VX-371 diluted in 3 mL 0.17% saline (placebo) through oral nebulized inhalation twice daily for 28 days (Day 57 to Day 84) in treatment period 2. Participants also received a stable dose of 2 tablets of Orkambi (lumacaftor 400 mg/ivacaftor 250 mg) orally every 12 hours with fat-containing food throughout the study as part of their CF standard of care.