A Study to Evaluate Safety, Efficacy, and Tolerability of TEZ/IVA in Orkambi® (Lumacaftor/Ivacaftor) -Experienced Subjects With Cystic Fibrosis (CF)
Conditions
Interventions
- DRUG: Tezacaftor/Ivacaftor
- DRUG: Ivacaftor
- DRUG: Placebo
- DRUG: Placebo
Sponsor
Vertex Pharmaceuticals Incorporated