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Terminated Phase 3 Interventional Results available

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

ClinicalTrials.gov ID: NCT03447262

Public ClinicalTrials.gov record NCT03447262. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 7, 2026, 11:55 AM EST

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Official title

A Phase 3, Open-label Study Evaluating the Long Term Safety and Efficacy of VX-659 Combination Therapy in Subjects With Cystic Fibrosis Who Are Homozygous or Heterozygous for the F508del Mutation

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

This study will evaluate the long-term safety and tolerability of VX-659 in triple combination (TC) with tezacaftor (TEZ) and ivacaftor (IVA) in subjects with cystic fibrosis (CF) who are homozygous or heterozygous for the F508del mutation.

Study identification

NCT ID
NCT03447262
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 3
Enrollment
484 participants

Conditions and interventions

Interventions

Drug

Eligibility (public fields only)

Age range
12 Years and older
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jul 13, 2018 (Actual)
Primary completion
Sep 9, 2020 (Actual)
Completion
Sep 9, 2020 (Actual)
Last update posted
Jan 25, 2022

2018 – 2020

United States locations

U.S. sites
48
U.S. states
29
U.S. cities
47
Facility City State ZIP Site status
University of Alabama at Birmingham Birmingham Alabama 35233 —
Stanford University Palo Alto California 94304 —
Children's Hospital Colorado Aurora Colorado 80045 —
Hartford Hospital Hartford Connecticut 06102 —
Yale New Haven Medical Center New Haven Connecticut 06511 —
University of Miami Miller School of Medicine Miami Florida 33136 —
Nicklaus Children's Hospital Miami Florida 33155 —
Orlando Health, Inc.- Arnold Palmer Hospital for Children (APH) Orlando Florida 32806 —
Johns Hopkins All Children's Hospital Outpatient Care Center St. Petersburg Florida 33701 —
St. Luke's CF Center of Idaho Boise Idaho 83712 —
Cystic Fibrosis Center of Chicago Glenview Illinois 60025 —
Advocate Children's Hospital - Park Ridge / North Suburban Pulmonary and Critical Care Consultants Niles Illinois 60714 —
Indiana Clinical Research Center, IU Health University Hospital Indianapolis Indiana 46202 —
The University of Iowa Hospitals and Clinics Iowa City Iowa 52242 —
University of Kentucky Lexington Kentucky 40536 —
Kosair Charities Pediatric Clinical Research Unit Louisville Kentucky 40202 —
Johns Hopkins Hospital Baltimore Maryland 21287 —
Boston Children's Hospital Boston Massachusetts 02115 —
UMass Memorial Medical Center Worcester Massachusetts 01655 —
Michigan Medicine Ann Arbor Michigan 48109-5212 —
Spectrum Health Medical Group Adult Cystic Fibrosis Care Center Grand Rapids Michigan 49546 —
University of Minnesota Minneapolis Minnesota 55455 —
University of Mississippi Medical Center Jackson Mississippi 39216 —
The Children's Mercy Hospital Kansas City Missouri 64108 —
Washington University School of Medicine/ St. Louis Children's Hospital St Louis Missouri 63110 —
Dartmouth Hitchcock, Manchester Manchester New Hampshire 03104 —
Rutgers-Robert Wood Johnson Medical School New Brunswick New Jersey 08901 —
Albany Medical College Albany New York 12208 —
CF Therapeutics Development Center of Western New York Buffalo New York 14203 —
Northwell Health, Long Island Jewish Medical Center New Hyde Park New York 11040 —
Columbia University Medical Center New York New York 10032 —
SUNY Upstate Medical University Syracuse New York 13210 —
Clinical Research of Charlotte Charlotte North Carolina 28277 —
Duke University Medical Center Durham North Carolina 27710 —
Cincinnati Children's Hospital Cincinnati Ohio 45229 —
Santiago Reyes, M.D. Oklahoma City Oklahoma 73112 —
Oregon Health & Science University Portland Oregon 97239 —
Drexel University College of Medicine / Drexel Adult Cystic Fibrosis Center Philadelphia Pennsylvania 19107 —
Children's Hospital of Pittsburgh of UPMC Pittsburgh Pennsylvania 15224 —
Sanford Children's Specialty Clinic Sioux Falls South Dakota 57105 —
University of Tennessee Medical Center- Adult Cystic Fibrosis Clinic Knoxville Tennessee 37920 —
Children's Foundation Research Center / Le Bonheur Children's Hospital Memphis Tennessee 38103 —
Vanderbilt University Medical Center Nashville Tennessee 37232 —
Cook Children's Medical Center Fort Worth Texas 76104 —
Texas Children's Hospital Houston Texas 77030 —
University of Utah/ Primary Children's Medical Center Salt Lake City Utah 84132 —
Seattle Children's Hospital Seattle Washington 98105 —
Providence Pediatric Pulmonary & Cystic Fibrosis Clinic Spokane Washington 99204 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 52 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT03447262, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Jan 25, 2022 · Synced Nov 7, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT03447262 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →