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Completed Phase 3 Interventional Results available

A Phase 3 Study of Tezacaftor (VX-661) in Combination With Ivacaftor (VX-770) in Subjects Aged 12 Years and Older With Cystic Fibrosis (CF), Who Have One F508del-CFTR Mutation and a Second Mutation That Has Been Demonstrated to be Clinically Responsive to Ivacaftor

ClinicalTrials.gov ID: NCT02412111

Public ClinicalTrials.gov record NCT02412111. 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 Sep 3, 2026, 3:53 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

A Phase 3, Randomized, Double-Blind, Ivacaftor-Controlled, Parallel-Group 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 and a Second CFTR Allele With a Gating Defect That Is Clinically Demonstrated to be Ivacaftor Responsive

Brief summary

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

This is a Phase 3, randomized, double-blind, ivacaftor-controlled, parallel-group, multicenter study of tezacaftor in combination with ivacaftor in subjects aged 12 years and older with CF who are heterozygous for the F508del-CFTR mutation and a second CFTR allele with a gating defect that is clinically demonstrated to be ivacaftor responsive.

Study identification

NCT ID
NCT02412111
Recruitment status
Completed
Study type
Interventional
Phase
Phase 3
Enrollment
156 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
May 31, 2015
Primary completion
Aug 31, 2017
Completion
Aug 31, 2017
Last update posted
Jan 7, 2019

2015 – 2017

United States locations

U.S. sites
33
U.S. states
24
U.S. cities
33
Facility City State ZIP Site status
Not listed Birmingham Alabama
Not listed Oakland California
Not listed San Diego California
Not listed Aurora Colorado
Not listed Washington D.C. District of Columbia
Not listed Orlando Florida
Not listed Augusta Georgia
Not listed Indianapolis Indiana
Not listed Lexington Kentucky
Not listed Boston Massachusetts
Not listed Ann Arbor Michigan
Not listed Detroit Michigan
Not listed Grand Rapids Michigan
Not listed St Louis Missouri
Not listed Omaha Nebraska
Not listed Lebanon New Hampshire
Not listed Manchester New Hampshire
Not listed Morristown New Jersey
Not listed New Brunswick New Jersey
Not listed Albany New York
Not listed New York New York
Not listed Cincinnati Ohio
Not listed Toledo Ohio
Not listed Oklahoma City Oklahoma
Not listed Portland Oregon
Not listed Philadelphia Pennsylvania
Not listed Pittsburgh Pennsylvania
Not listed Charleston South Carolina
Not listed Knoxville Tennessee
Not listed Nashville Tennessee
Not listed Houston Texas
Not listed Salt Lake City Utah
Not listed Morgantown West Virginia

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 35 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT02412111, 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 7, 2019 · Synced Sep 3, 2026

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Open the official record

The complete protocol, eligibility criteria, and contact information for NCT02412111 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →