Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Parallel Group Study to Evaluate the Efficacy and Safety of VX-770 in Subjects With Cystic Fibrosis and the G551D Mutation
Brief Summary: The purpose of this study was to evaluate the efficacy and safety of ivacaftor in subjects with cystic fibrosis aged 12 years and older who have the G551D mutation in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. Ivacaftor is a potent and selective CFTR potentiator of wild-type, G551D, F508del, and R117H forms of human CFTR protein. Potentiators are pharmacological agents that increase the chloride ion transport properties of the channel in the presence of cyclic AMP-dependent protein kinase A (PKA) activation.


Options:
A: Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Arm Label: 150 mg Ivacaftor q12h; Type: EXPERIMENTAL; Interventions: Drug: Ivacaftor | Intervention Type: DRUG; Name: Ivacaftor; Assigned to Arm(s): 150 mg Ivacaftor q12h | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Placebo
B: Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Arm Label: LUM 600 mg qd/IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination, Drug: Ivacaftor | Arm Label: LUM 400 mg q12h/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination | Intervention Type: DRUG; Name: Lumacaftor Plus Ivacaftor Combination; Assigned to Arm(s): LUM 400 mg q12h/ IVA 250 mg q12h, LUM 600 mg qd/IVA 250 mg q12h | Intervention Type: DRUG; Name: Ivacaftor; Assigned to Arm(s): LUM 600 mg qd/IVA 250 mg q12h | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Placebo
C: Arm Label: LUM/IVA; Type: EXPERIMENTAL; Interventions: Drug: VX-809, Drug: VX-770 | Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: Placebo | Intervention Type: DRUG; Name: VX-809; Assigned to Arm(s): LUM/IVA | Intervention Type: DRUG; Name: Placebo; Assigned to Arm(s): Placebo | Intervention Type: DRUG; Name: VX-770; Assigned to Arm(s): LUM/IVA
D: Arm Label: Arm 1 Part A: LUM 600 mg qd/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination, Drug: Ivacaftor | Arm Label: Arm 2 Part A: Placebo - LUM 600 mg qd/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination, Drug: Ivacaftor | Arm Label: Arm 3 Part A: LUM 400 mg q12h/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination | Arm Label: Arm 4 Part A: Placebo - LUM 400 mg q12h/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination | Arm Label: Arm 5 Part A: Observational Cohort; Type: NO_INTERVENTION; Interventions: N/A | Arm Label: Arm 6 Part B: LUM 400 mg q12h/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination | Arm Label: Arm 7 Part B: Placebo - LUM 400 mg q12h/ IVA 250 mg q12h; Type: EXPERIMENTAL; Interventions: Drug: Lumacaftor Plus Ivacaftor Combination | Intervention Type: DRUG; Name: Lumacaftor Plus Ivacaftor Combination; Assigned to Arm(s): Arm 1 Part A: LUM 600 mg qd/ IVA 250 mg q12h, Arm 2 Part A: Placebo - LUM 600 mg qd/ IVA 250 mg q12h, Arm 3 Part A: LUM 400 mg q12h/ IVA 250 mg q12h, Arm 4 Part A: Placebo - LUM 400 mg q12h/ IVA 250 mg q12h, Arm 6 Part B: LUM 400 mg q12h/ IVA 250 mg q12h, Arm 7 Part B: Placebo - LUM 400 mg q12h/ IVA 250 mg q12h | Intervention Type: DRUG; Name: Ivacaftor; Assigned to Arm(s): Arm 1 Part A: LUM 600 mg qd/ IVA 250 mg q12h, Arm 2 Part A: Placebo - LUM 600 mg qd/ IVA 250 mg q12h

Answer: A