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Showing 1–24 of 47 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ivacaftor Placebo Clear all
Completed Phase 3 Interventional Results available

Study of Ivacaftor in Subjects With Cystic Fibrosis (CF) Who Have the R117H-CF Transmembrane Conductance Regulator (CFTR) Mutation (KONDUCT)

NCT01614457
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
29
States / cities
Birmingham, Alabama • Palo Alto, California • Hartford, Connecticut + 26 more
Source: ClinicalTrials.gov public record
Updated Feb 11, 2015 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study Assessing the Safety, Tolerability, Pharmacokinetics, Food Effect, and Drug-Drug Interactions of PTI-801 in Healthy Volunteers, and Safety, Tolerability, and Pharmacokinetics of PTI-801 in Subjects With Cystic Fibrosis

NCT03140527
View directory record Official record
Conditions
Healthy Volunteer, Cystic Fibrosis
Interventions
PTI-801, Placebo, PTI-808
Drug
Lead sponsor
Proteostasis Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
171 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
33
States / cities
Birmingham, Alabama • Anchorage, Alaska • Stanford, California + 28 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2020 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Rollover Study of Lumacaftor in Combination With Ivacaftor in Subjects 12 Years and Older With Cystic Fibrosis

NCT01931839
View directory record Official record
Conditions
Cystic Fibrosis, Homozygous or Heterozygous for the F508del-CFTR Mutation
Interventions
Lumacaftor Plus Ivacaftor Combination, Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
1,164 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
91
States / cities
Birmingham, Alabama • Anchorage, Alaska • Tucson, Arizona + 88 more
Source: ClinicalTrials.gov public record
Updated May 11, 2017 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Safety and Efficacy of Long Term Treatment With VX-661 in Combination With Ivacaftor in Participants With Cystic Fibrosis Who Have an F508del-CFTR Mutation

NCT02565914
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
1,131 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
69
States / cities
Birmingham, Alabama • Tucson, Arizona • Little Rock, Arkansas + 66 more
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional Results available

A Study Evaluating the Safety of VX-152 Combination Therapy in Adults With Cystic Fibrosis

NCT02951195
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-152, TEZ/IVA, IVA, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
16
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 13 more
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional

Study of Cavosonstat (N91115) in Patients With CF Homozygous for the F508del-CFTR Mutation

NCT02589236
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Cavosonstat, Placebo
Drug
Lead sponsor
Nivalis Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
46
States / cities
Birmingham, Alabama • Tucson, Arizona • Los Angeles, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug-Drug Interaction Study of VX-770 and VX-809 in Healthy Subjects

NCT01216046
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-809, VX-770, VX-809 placebo, VX-770 placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 55 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 17, 2012 · Synced Sep 9, 2026, 3:18 AM EDT
Terminated Phase 2 Interventional Results available

Study to Evaluate the Safety and Efficacy of CTP-656 in Patients With Cystic Fibrosis With CFTR Gating Mutations

NCT02971839
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-561, Placebo, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
14
States / cities
Los Angeles, California • Palo Alto, California • Washington D.C., District of Columbia + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2020 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Efficacy and Safety of VX-661 in Combination With Ivacaftor

NCT02347657
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-661 Plus Ivacaftor Combination, Ivacaftor, VX-661 Plus Ivacaftor Combination Placebo, Ivacaftor placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
510 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
27
States / cities
Little Rock, Arkansas • Long Beach, California • Denver, Colorado + 24 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional Results available

Study of the Effect of VX-770 on Hyperpolarized Helium-3 Magnetic Resonance Imaging in Subjects With Cystic Fibrosis and the G551D Mutation

NCT01161537
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-770, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 30, 2014 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3 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-cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Mutation

NCT02392234
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-661/Ivacaftor, Ivacaftor, Placebo matched to VX-661/ ivacaftor, Placebo matched to Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
248 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
47
States / cities
Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 44 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older With the G551D Mutation

NCT00909532
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
39
States / cities
Birmingham, Alabama • Oakland, California • Palo Alto, California + 34 more
Source: ClinicalTrials.gov public record
Updated Jan 17, 2013 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

Rollover Study to Evaluate the Safety and Efficacy of Long-term Treatment With Lumacaftor in Combination With Ivacaftor

NCT02544451
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
LUM/IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years and older
Enrollment
246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
37
States / cities
Birmingham, Alabama • Tucson, Arizona • Long Beach, California + 34 more
Source: ClinicalTrials.gov public record
Updated May 23, 2021 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Study of VX-659 Combination Therapy in CF Subjects Homozygous for F508del (F/F)

NCT03460990
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-659/TEZ/IVA, TEZ/IVA, IVA, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
116 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
28
States / cities
Birmingham, Alabama • New Haven, Connecticut • Miami, Florida + 25 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2019 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Study of VX-121 Combination Therapy in Participants With Cystic Fibrosis (CF) Heterozygous for F508del and a Minimal Function Mutation (F/MF)

NCT05033080
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-121/TEZ/D-IVA, ELX/TEZ/IVA, IVA, Placebo (matched to VX-121/TEZ/D-IVA), Placebo (matched to ELX/TEZ/IVA), Placebo (matched to IVA)
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
435 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
69
States / cities
Birmingham, Alabama • Tucson, Arizona • Little Rock, Arkansas + 61 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Sep 9, 2026, 3:18 AM EDT
Terminated Phase 2 Interventional Results available

Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older Homozygous for the F508del-CFTR Mutation

NCT00953706
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
34
States / cities
Birmingham, Alabama • Anchorage, Alaska • Oakland, California + 30 more
Source: ClinicalTrials.gov public record
Updated Sep 10, 2015 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Safety and Efficacy of VX-371 in Subjects With Cystic Fibrosis Who Are Homozygous for the F508del-CFTR Mutation

NCT02709109
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-371 + HS, Hypertonic saline, Placebo, Orkambi, VX-371
Drug
Lead sponsor
Parion Sciences
Industry
Eligibility
12 Years and older
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
30
States / cities
Little Rock, Arkansas • Oakland, California • Gainesville, Florida + 27 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2021 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional Results available

Safety Study of Ivacaftor in Subjects With Cystic Fibrosis

NCT00457821
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor 25 mg/75 mg, Ivacaftor 75 mg/150 mg, Ivacaftor 150 mg or 250 mg, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
13
States / cities
Birmingham, Alabama • Palo Alto, California • Aurora, Colorado + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 4, 2012 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Study of VX-445 Combination Therapy in Subjects With Cystic Fibrosis Heterozygous for the F508del Mutation and a Minimal Function Mutation (F/MF)

NCT03525444
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-445/TEZ/IVA, IVA, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
405 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
53
States / cities
Tucson, Arizona • Little Rock, Arkansas • Long Beach, California + 48 more
Source: ClinicalTrials.gov public record
Updated May 18, 2020 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional Results available

A Study Evaluating the Safety and Efficacy of VX-440 Combination Therapy in Subjects With Cystic Fibrosis

NCT02951182
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
TEZ, IVA, VX-440, Matched Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
22
States / cities
Tucson, Arizona • Palo Alto, California • San Francisco, California + 18 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2020 · Synced Sep 9, 2026, 3:18 AM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

A Phase 2 Study Evaluating Safety and Tolerability of RCT2100 (CFTR mRNA) in Healthy Participants and in Participants With CF

NCT06237335
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
RCT2100, Placebo, Ivacaftor
Drug · Other
Lead sponsor
ReCode Therapeutics
Industry
Eligibility
18 Years to 60 Years
Enrollment
128 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
13
States / cities
Birmingham, Alabama • Tucson, Arizona • Palo Alto, California + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Study of Lumacaftor in Combination With Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older Who Are Homozygous for the F508del-CFTR Mutation

NCT01807949
View directory record Official record
Conditions
Cystic Fibrosis, Homozygous for the F508del CFTR Mutation
Interventions
Placebo, Lumacaftor Plus Ivacaftor Combination, Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years to 65 Years
Enrollment
563 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
46
States / cities
Oakland, California • Sacramento, California • Aurora, Colorado + 43 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2016 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 2 Interventional Results available

Pilot Study Testing the Effect of Ivacaftor on Lung Function in Subjects With Cystic Fibrosis and Residual CFTR Function

NCT01685801
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, Placebo-matched-to-ivacaftor tablet
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 18, 2015 · Synced Sep 9, 2026, 3:18 AM EDT
Completed Phase 3 Interventional Results available

A Study of VX-121 Combination Therapy in Participants With Cystic Fibrosis (CF) Who Are Homozygous for F508del, Heterozygous for F508del and a Gating (F/G) or Residual Function (F/RF) Mutation, or Have At Least 1 Other Triple Combination Responsive (TCR) CFTR Mutation and No F508del Mutation

NCT05076149
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-121/TEZ/D-IVA, ELX/TEZ/IVA, IVA, Placebo (matched to VX-121/TEZ/D-IVA), Placebo (matched to ELX/TEZ/IVA), Placebo (matched to IVA)
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
597 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
62
States / cities
Birmingham, Alabama • Tucson, Arizona • Little Rock, Arkansas + 55 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2024 · Synced Sep 9, 2026, 3:18 AM EDT