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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ivacaftor Clear all
Completed Phase 2 Interventional Results available

Study to Evaluate Safety and Efficacy of VX-661 in Combination With Ivacaftor in Subjects With Cystic Fibrosis, Homozygous for the F508del-CFTR Mutation With an Open-Label Expansion

NCT02070744
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-661, Ivacaftor, Placebo matched to VX-661, Placebo matched to Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
23
States / cities
Birmingham, Alabama • Palo Alto, California • Stanford, California + 20 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 2 Interventional Results available

Study of VX-809 Alone and in Combination With VX-770 in Cystic Fibrosis (CF) Patients Homozygous or Heterozygous for the F508del-CFTR Mutation

NCT01225211
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Lumacaftor, Ivacaftor, Lumacaftor Placebo, Ivacaftor Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
38
States / cities
Birmingham, Alabama • Anchorage, Alaska • La Jolla, California + 35 more
Source: ClinicalTrials.gov public record
Updated Oct 4, 2015 · Synced Sep 22, 2026, 5:04 PM EDT
Terminated Phase 4 Interventional Results available

Novel Therapeutic Approaches for Treatment of CF Patients With W1282X Premature Termination Codon Mutations

NCT03624101
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Symdeko, Ivacaftor and Symdeko
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 15, 2025 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study of VX-770 on Desipramine

NCT01153542
View directory record Official record
Conditions
In Development for Cystic Fibrosis
Interventions
VX-770
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 55 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Dec 8, 2010 · Synced Sep 22, 2026, 5:04 PM EDT
Recruiting Early Phase 1 Interventional

Personalized Theratyping Trial

NCT03587961
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Symdeko
Drug
Lead sponsor
George Solomon
Other
Eligibility
6 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 22, 2026, 5:04 PM 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 22, 2026, 5:04 PM EDT
Completed Phase 2 Interventional

A Phase 2 Study to Evaluate the Safety, Tolerability, PK and PD of ELX-02 in Cystic Fibrosis Patients With G542X Allele

NCT04135495
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
ELX-02, Ivacaftor
Drug
Lead sponsor
Eloxx Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
7
States / cities
Long Beach, California • Palo Alto, California • Denver, Colorado + 4 more
Source: ClinicalTrials.gov public record
Updated Nov 21, 2022 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of VX-661 in Combination With Ivacaftor in Subjects Aged 12 Years and Older With Cystic Fibrosis, Heterozygous for the F508del-CFTR Mutation

NCT02516410
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-661 plus ivacaftor combination, Ivacaftor, Placebo (matched to VX-661 plus ivacaftor combination), Placebo (matched to ivacaftor)
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
22
States / cities
Birmingham, Alabama • La Jolla, California • Los Angeles, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2018 · Synced Sep 22, 2026, 5:04 PM 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 22, 2026, 5:04 PM EDT
Completed No phase listed Observational

Orkambi Treatment in 2 to 5 Year Old Children With CF

NCT03795363
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Orkambi
Drug
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
2 Years to 5 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 1, 2021 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate Lumacaftor and Ivacaftor Combination Therapy in Subjects 12 Years and Older With Advanced Lung Disease

NCT02390219
View directory record Official record
Conditions
Cystic Fibrosis, Advanced Lung Disease
Interventions
Lumacaftor, Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
6
States / cities
Denver, Colorado • Tampa, Florida • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Dec 5, 2017 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of VX-661/Ivacaftor in Pediatric Subjects With Cystic Fibrosis (CF)

NCT02953314
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
TEZ, TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years to 11 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
30
States / cities
Birmingham, Alabama • Anchorage, Alaska • Little Rock, Arkansas + 27 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2020 · Synced Sep 22, 2026, 5:04 PM EDT
Terminated Phase 3 Interventional Results available

Evaluation of VX-659/TEZ/IVA in Cystic Fibrosis Subjects 6 Through 11 Years of Age

NCT03633526
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-659/TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years to 11 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
6
States / cities
Aurora, Colorado • Chicago, Illinois • Kansas City, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Not applicable Interventional

The Impact of Patch Rx Technologies on Adherence to Vitamin and Trikafta Therapies in Patients With Cystic Fibrosis

NCT04684823
View directory record Official record
Conditions
Cystic Fibrosis, Adherence, Medication
Interventions
Patch Cap, Patch App
Device
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
12 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jan 3, 2022 · Synced Sep 22, 2026, 5:04 PM 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 22, 2026, 5:04 PM 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 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

Study of Ivacaftor in Subjects With Cystic Fibrosis (CF) Who Have a Non-G551D CF Transmembrane Conductance Regulator (CFTR) Gating Mutation

NCT01614470
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years and older
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
8
States / cities
Tampa, Florida • Atlanta, Georgia • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 28, 2014 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

Rollover Study of VX-770 in Cystic Fibrosis Subjects

NCT01117012
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
36
States / cities
Birmingham, Alabama • Oakland, California • Palo Alto, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2015 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

A Study of VX-445 in Healthy Subjects and Subjects With Cystic Fibrosis

NCT03227471
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
IVA, TEZ/IVA, VX-445, Matched Placebo, TEZ, VX-561
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
225 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
26
States / cities
Tucson, Arizona • Little Rock, Arkansas • Madera, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jan 17, 2022 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Study of VX-659 Combination Therapy in Subjects With Cystic Fibrosis Heterozygous for the F508del Mutation and a Minimal Function Mutation (F/MF)

NCT03447249
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-659/TEZ/IVA, IVA, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
385 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
48
States / cities
Birmingham, Alabama • Palo Alto, California • Aurora, Colorado + 44 more
Source: ClinicalTrials.gov public record
Updated Mar 12, 2020 · Synced Sep 22, 2026, 5:04 PM EDT
Not listed Phase 2 Interventional

Study of Cavosonstat (N91115) in CF Patients Who Are Heterozygous for F508del-CFTR and a Gating Mutation and Being Treated With Ivacaftor

NCT02724527
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Cavosonstat, Placebo
Drug
Lead sponsor
Nivalis Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
12
States / cities
Denver, Colorado • Baltimore, Maryland • Boston, Massachusetts + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2016 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional Results available

A Study Evaluating the Long-term Safety of VX-445 Combination Therapy

NCT04043806
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
ELX/TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
458 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
46
States / cities
Birmingham, Alabama • Palo Alto, California • Aurora, Colorado + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2023 · Synced Sep 22, 2026, 5:04 PM EDT
Completed Phase 3 Interventional

Evaluation of Long-term Safety and Efficacy of ELX/TEZ/IVA in Cystic Fibrosis (CF) Participants 2 Years and Older

NCT05153317
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
ELX/TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
2 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
13
States / cities
Tucson, Arizona • Palo Alto, California • Aurora, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Sep 22, 2026, 5:04 PM EDT
Recruiting No phase listed Observational

Sinus Disease in Young Children With Cystic Fibrosis

NCT06191640
View directory record Official record
Conditions
Cystic Fibrosis in Children, Cystic Fibrosis, Chronic Rhinosinusitis (Diagnosis), Olfactory Disorder, Olfactory Impairment
Interventions
Ivacaftor or elexacaftor/tezacaftor/ivacaftor
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
2 Years to 8 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
6
States / cities
Aurora, Colorado • Iowa City, Iowa • Kansas City, Kansas + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Sep 22, 2026, 5:04 PM EDT