Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Oct 7, 2026, 3:34 AM EDT

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Showing 49–56 of 56 matching trials from the live ClinicalTrials.gov search.
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
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
Completed Phase 1 Interventional Accepts healthy volunteers

Study of VX-770 on Desipramine

NCT01153542
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
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
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
Conditions
Cystic Fibrosis
Interventions
ivacaftor, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
6 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
San Francisco, California
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
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