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Showing 1–24 of 110 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Ivacaftor (VX-770) Clear all
Completed Phase 3 Interventional Results available

A Phase 3 Study of VX-445 Combination Therapy in Cystic Fibrosis (CF) Subjects Heterozygous for F508del and a Gating or Residual Function Mutation (F/G and F/RF Genotypes)

NCT04058353
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
ELX/TEZ/IVA, IVA, TEZ/IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
271 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
37
States / cities
Birmingham, Alabama • Tucson, Arizona • Long Beach, California + 32 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2021 · Synced Sep 27, 2026, 8:02 PM EDT
Completed No phase listed Observational

A Decentralized Study to Evaluate Physical Activity and Cough Frequency Using Wearable Technology in Cystic Fibrosis

NCT04923464
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Not listed
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
11
States / cities
Denver, Colorado • New Haven, Connecticut • Orlando, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2022 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Impact of Rifabutin on the Pharmacokinetics of Elexacaftor/Tezacaftor/Ivacaftor

NCT04840862
View directory record Official record
Conditions
Drug Drug Interaction
Interventions
Trikafta [orange tablet containing ELX 100mg, TEZ 50mg, and IVA 75mg], Rifabutin 300mg
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 8, 2024 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 3 Interventional Results available

Study of Ivacaftor in Cystic Fibrosis Subjects Aged 6 to 11 Years With the G551D Mutation

NCT00909727
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
6 Years to 11 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
17
States / cities
Birmingham, Alabama • Atlanta, Georgia • Chicago, Illinois + 13 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2012 · Synced Sep 27, 2026, 8:02 PM EDT
Terminated Phase 3 Interventional Results available

A Study Evaluating the Long Term Safety and Efficacy of VX-659 Combination Therapy

NCT03447262
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-659/TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
484 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
48
States / cities
Birmingham, Alabama • Palo Alto, California • Aurora, Colorado + 44 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2022 · Synced Sep 27, 2026, 8:02 PM 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

NCT01807923
View directory record Official record
Conditions
Cystic Fibrosis, Homozygous for the F508del CFTR Mutation
Interventions
Lumacaftor Plus Ivacaftor Combination, Ivacaftor, Placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
12 Years and older
Enrollment
559 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
48
States / cities
Birmingham, Alabama • Anchorage, Alaska • Tucson, Arizona + 45 more
Source: ClinicalTrials.gov public record
Updated Aug 30, 2015 · Synced Sep 27, 2026, 8:02 PM EDT
Active, not recruiting No phase listed Observational

Ivacaftor for Acquired CFTR Dysfunction in Chronic Rhinosinusitis (EDSPD Protocol)

NCT02997020
View directory record Official record
Conditions
CRS
Interventions
EDSPD
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 27, 2026, 8:02 PM 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 27, 2026, 8:02 PM EDT
Completed Phase 2 Interventional Results available

Trikafta in Cystic Fibrosis Patients

NCT03506061
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Trikafta
Drug
Lead sponsor
Emory University
Other
Eligibility
12 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
2
States / cities
Birmingham, Alabama • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 27, 2026, 8:02 PM 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 27, 2026, 8:02 PM EDT
Completed No phase listed Observational

Clinical Outcomes of Triple Combination Therapy in Severe Cystic Fibrosis Disease.

NCT04038710
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Triple combination therapy
Drug
Lead sponsor
National Jewish Health
Other
Eligibility
12 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 10, 2021 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

(Study: Vertex IIS) Does Ivacaftor Alter Wild Type CFTR-Open Probability In The Sweat Gland Secretory Coil?

NCT02310789
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor, β-Adrenergic cocktail, Pilocarpine Nitrate 5%, Macroduct sweat stimulator
Drug · Device
Lead sponsor
Richard Barry Moss
Other
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jan 8, 2019 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 3 Interventional Results available

Roll-Over Study of Ivacaftor in Cystic Fibrosis Pediatric Subjects With a CF Transmembrane Conductance Regulator Gene (CFTR) Gating Mutation

NCT01946412
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
2 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
12
States / cities
Birmingham, Alabama • Denver, Colorado • Atlanta, Georgia + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 31, 2017 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 4 Interventional Results available

PTC Study to Evaluate Ataluren in Combination With Ivacaftor

NCT03256968
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Ataluren
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
6 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 25, 2020 · Synced Sep 27, 2026, 8:02 PM EDT
Completed No phase listed Observational Results available

: TRANSITION: An Observational Study of Transition From Lumacaftor/Ivacaftor to Tezacaftor/Ivacaftor (Tez/Iva)

NCT03445793
View directory record Official record
Conditions
Cystic Fibrosis (CF)
Interventions
Not listed
Lead sponsor
National Jewish Health
Other
Eligibility
12 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jan 22, 2024 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase 1 Study to Investigate the Food Effect of Lumacaftor in Combination With Ivacaftor

NCT01899105
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
lumacaftor, ivacaftor
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 55 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Daytona Beach, Florida
Source: ClinicalTrials.gov public record
Updated Apr 2, 2014 · Synced Sep 27, 2026, 8:02 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 27, 2026, 8:02 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2 Study to Evaluate Effects of VX-661/Ivacaftor on Lung and Extrapulmonary Systems in Subjects With Cystic Fibrosis, Homozygous for the F508del-CFTR Mutation

NCT02508207
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Tezacaftor/Ivacaftor, Ivacaftor, Tezacaftor/Ivacaftor matching placebo, Ivacaftor matching placebo
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
7
States / cities
Birmingham, Alabama • Indianapolis, Indiana • Baltimore, Maryland + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 18, 2021 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 3 Interventional Results available

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

NCT03525574
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
507 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
52
States / cities
Tucson, Arizona • Little Rock, Arkansas • Long Beach, California + 47 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 2 Interventional Results available

A Study Evaluating the Safety and Efficacy of VX-659 Combination Therapy in Subjects With Cystic Fibrosis

NCT03224351
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
VX-659, TEZ/IVA, IVA, Placebo (matched to VX-659/TEZ/IVA), TEZ, VX-561, Placebo (matched to VX-659/TEZ/VX-561)
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
25
States / cities
New Haven, Connecticut • Miami, Florida • Morton Grove, Illinois + 22 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2021 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Early Phase 1 Interventional Results available

TOPIC Trial for COPD

NCT02135432
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Ivacaftor, Placebo
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
40 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 23, 2017 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 3 Interventional Results available

A Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of Ivacaftor in Subjects With Cystic Fibrosis Who Are Less Than 24 Months of Age and Have an Ivacaftor-Responsive CFTR Mutation

NCT02725567
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
1 Month to 24 Months
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
13
States / cities
Birmingham, Alabama • Palo Alto, California • Atlanta, Georgia + 10 more
Source: ClinicalTrials.gov public record
Updated Sep 6, 2023 · Synced Sep 27, 2026, 8:02 PM EDT
Completed Phase 3 Interventional Results available

Evaluation of ELX/TEZ/IVA in Cystic Fibrosis (CF) Subjects 2 Through 5 Years

NCT04537793
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
ELX/TEZ/IVA, IVA
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
2 Years to 5 Years
Enrollment
83 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
13
States / cities
Tucson, Arizona • Palo Alto, California • Aurora, Colorado + 10 more
Source: ClinicalTrials.gov public record
Updated Jun 27, 2023 · Synced Sep 27, 2026, 8:02 PM 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 27, 2026, 8:02 PM EDT