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A Phase 1, Randomized, Double blind, Placebo Controlled, Single and Multiple Dose Escalation Study Evaluating Safety and Pharmacokinetics of VX 152 Alone and in Combination with VX 661/Ivacaftor, and Bioavailability and Food Effect of VX 152 in Healthy Adult Subjects

The purpose of Part A is to investigate how safe the study compound VX-152 is and how well the study compound is tolerated. The study will also investigate how quickly and to what extent the compound is absorbed into and eliminated from the body (…

A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Crossover Study to Evaluate the
Efficacy and Safety of Ivacaftor and VX-661 in Combination With Ivacaftor in Subjects Aged
12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-CFTR Mutation, and a
Second Allele With a CFTR Mutation Predicted to Have Residual Function

To evaluate the efficacy of VX-661 in combination with ivacaftor and ivacaftormonotherapy through 8 weeks of treatment in subjects with cystic fibrosis (CF)who are heterozygous for the F508del mutation on the CF transmembraneconductance regulator (…

A Phase 1, Randomized, Double-blind, Placebo-Controlled, Single- and Multiple-Dose Escalation Study Evaluating Safety and Pharmacokinetics of VX-440 Alone and in Combination with VX-661/Ivacaftor, and Bioavailability and Food Effect of VX-440 in Healthy Adult Subjects

The purpose of Part A is to investigate how safe the study compound VX-440 is and how well the study compound istolerated. The study will also investigate how quickly and to what extent the compound is absorbed into and eliminatedfrom the body (this…

A Phase 3, Randomized, Double Blind, Placebo Controlled, Parallel Group Study to Evaluate the Efficacy and Safety of Lumacaftor in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Homozygous for the F508del CFTR Mutation

Primary ObjectiveTo evaluate the efficacy of lumacaftor in combination with ivacaftor throughat Week 24 in subjects with cystic fibrosis (CF) who are homozygous for the F508del CFTR mutation on the CF transmembrane conductance regulator (CFTR)…

A Phase 3, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate
the Efficacy and Safety of VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Homozygous for the F508del-CFTR Mutation

To evaluate the efficacy of VX-661 in combination with ivacaftor through 24 weeks of treatment in subjects with cystic fibrosis (CF) who are homozygous for the F508del mutation on the CF transmembrane conductance regulator (CFTR) gene.

A Phase 3, Randomized, Double-blind, Controlled Study Evaluating the Efficacy and Safety of VX-445 Combination Therapy in Subjects With Cystic Fibrosis Who Are Heterozygous for the F508del Mutation and a Minimal Function Mutation (F/MF)

Primary Objective:To evaluate the efficacy of VX-445 in triple combination (TC) with tezacaftor (TEZ) andivacaftor (IVA) in subjects with cystic fibrosis (CF) who are heterozygous for F508del and aminimal function mutation (F/MF subjects)Secondary…

A Phase 3, Randomized, Double-blind, Controlled Study Evaluating the Efficacy and Safety of VX-445 Combination Therapy in Subjects With Cystic Fibrosis Who Are Homozygous for the F508del Mutation (F/F)

Primary Objective:To evaluate the efficacy of VX-445 in triple combination (TC) with tezacaftor (TEZ) and ivacaftor (IVA) in subjects with cystic fibrosis (CF) who are homozygous for the F508del mutation (F/F)Secondary Objectives:* To evaluate the…

A Phase 2a, Two-part, Randomized, Double-blind, Placebo-controlled, Incomplete Block Crossover Study to Evaluate the Safety and Efficacy of VX-371 Solution for Inhalation With and Without Oral Ivacaftor in Subjects With Primary Ciliary Dyskinesia

Main objectivePart A: To evaluate the safety and efficacy of treatment with VX-371, administered with and without 4.2% hypertonic saline (HS) in subjects with primary ciliary dyskinesia (PCD) who are *12 years of age.Part B: To evaluate the safety…

A Phase 3 Double-blind, Randomized, Placebo-controlled Study Evaluating the Efficacy and Safety of ELX/TEZ/IVA in Cystic Fibrosis Subjects 6 Years of Age and Older With a Non-F508del ELX/TEZ/IVA-responsive CFTR Mutation

To evaluate the efficacy and pharmacodynamics (PD) of ELX/TEZ/IVA

A Phase 2, Randomized, Double-blind, Controlled Study to Evaluate the Safety and Efficacy of VX-121 Combination Therapy in Subjects Aged 18 Years and Older With Cystic Fibrosis

Primary ObjectivesParts 1 (Subjects with F/MF genotypes) and 2 (Optional; Subjects with the F/F genotype)* To evaluate the safety and tolerability of VX 121 in TC with TEZ/VX 561 (deuterated IVA) * To evaluate the efficacy of VX 121 in TC with TEZ/…