AzTrials
AzTrials

Cystic FibrosisPhase 3NCT03633526

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

A Phase 3 study testing VX-659/TEZ/IVA and IVA in people with Cystic Fibrosis, run by Vertex Pharmaceuticals Incorporated at 6 sites in United States.

Terminated

Stopped early. The study ended before it was planned to and will not resume.

Official record
Search all trials

Trial summary

This study will evaluate the pharmacokinetics (PK), safety, tolerability, efficacy, and pharmacodynamic effect of VX-659, tezacaftor (TEZ), and ivacaftor (IVA) when dosed in triple combination (TC) in Cystic Fibrosis (CF) subjects with F/F or F/MF genotypes. Read more about this study

Who is it for?
Ages 6 to 11 years
Conditions the study is for
Cystic Fibrosis
What is being tested?
VX-659/TEZ/IVA and IVA
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
18 participants
Where
6 sitesUnited States
Study dates
3 Aug 2018to 18 Jan 2019
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 6 to 11 years
  • All sexes
  • No healthy volunteers
  • Child

Who may be able to join

  • Homozygous or heterozygous for F508del mutation (F/F or F/MF genotypes)
  • Forced expiratory volume in 1 second (FEV1) value ≥40% of predicted mean for age, sex, and height.

Who cannot join

  • Clinically significant cirrhosis with or without portal hypertension
  • Lung infection with organisms associated with a more rapid decline in pulmonary status.
  • Solid organ or hematological transplantation.
  • Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

6 sites in 1 country.

6 sites in 1 country

United States6 sites
  • Children's Hospital Colorado

    Aurora, Colorado, 80045

  • Clinical Research of Charlotte

    Charlotte, North Carolina, 28277

  • Ann & Robert Lurie Children's Hospital of Chicago

    Chicago, Illinois, 60611

  • Texas Children's Hospital

    Houston, Texas, 77030

  • The Children's Mercy Hospital

    Kansas City, Missouri, 64108

  • Oregon Health & Science University

    Portland, Oregon, 97239

Other trials in United States

About this study

Official title: A Phase 3 Study Evaluating the Pharmacokinetics, Safety, and Tolerability of VX-659/TEZ/IVA Triple Combination Therapy in Cystic Fibrosis Subjects 6 Through 11 Years of Age

This study will evaluate the pharmacokinetics (PK), safety, tolerability, efficacy, and pharmacodynamic effect of VX-659, tezacaftor (TEZ), and ivacaftor (IVA) when dosed in triple combination (TC) in Cystic Fibrosis (CF) subjects with F/F or F/MF genotypes.

The study was discontinued after completion of Part A due to Sponsor's discretion.

Conditions
Cystic Fibrosis
Being tested
VX-659/TEZ/IVA, IVA
Medical subject headings
Cystic Fibrosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VX-659/TEZ/IVADrug

    Also called VX-659/VX-661/VX-770, VX-659/tezacaftor/ivacaftor

    VX-659/TEZ/IVA FDC tablet.

  • IVADrug

    Also called VX-770, ivacaftor

    IVA mono tablet.

Study groups in NCT03633526
Study groupRoleWhat they receive
VX-659/TEZ/IVAExperimentalParticipants who received VX-659 120 milligram (mg)/TEZ 50 mg/ IVA 75 mg as fixed-dose combination (FDC) in the morning and IVA 75 mg as a mono tablet in the evening in the triple combination (TC) treatment period.
Receives: Drug: VX-659/TEZ/IVA; Drug: IVA

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Maximum Observed Concentration (Cmax) of VX-659, TEZ, and IVA

    Measured: Day 1 and Day 15

  2. Observed Pre-Dose Concentration (Ctrough) of VX-659, TEZ, and IVA

    Measured: Day 8 and Day 15

  3. Area Under the Concentration Versus Time Curve From Time 0 to 6 Hours (AUC0-6h) of VX-659, TEZ, and IVA

    Measured: Day 1 and Day 15

Secondary outcomes (4)
  1. Maximum Observed Concentration (Cmax) of TEZ Metabolite (M1-TEZ), and IVA Metabolite (M1-IVA)

    Measured: Day 1 and Day 15

  2. Observed Pre-Dose Concentration (Ctrough) of TEZ Metabolite (M1-TEZ), and IVA Metabolite (M1-IVA)

    Measured: Day 8 and Day 15

  3. Area Under the Concentration Versus Time Curve From Time 0 to 6 Hours (AUC0-6h) of TEZ Metabolite (M1-TEZ), and IVA Metabolite (M1-IVA)

    Measured: Day 1 and Day 15

  4. Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Measured: From first dose of study drug in TC treatment period up to 28 days after last dose of study drug or to the completion of study participation date, whichever occurs first (up to 6 weeks)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted16 Aug 2018
  2. Study start3 Aug 2018
  3. Primary completion18 Jan 2019
  4. Study completion18 Jan 2019

Why it stopped: Study discontinued after Part A due to Sponsor's discretion.

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Intervention model
Sequential
Masking
None (open label)
Enrolment
18 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT03633526
Sponsor's protocol ID
VX18-659-106
Other IDs
2018-001711-67, 2018
Status last verified
Jan 2020
First submitted
27 Jul 2018
Last updated
5 Feb 2020
FDA-regulated drug
Yes
FDA-regulated device
No

Publications

  • Heneghan M, Southern KW, Murphy J, Sinha IP, Nevitt SJ. Corrector therapies (with or without potentiators) for people with cystic fibrosis with class II CFTR gene variants (most commonly F508del). Cochrane Database Syst Rev. 2023 Nov 20;11(11):CD010966. doi: 10.1002/14651858.CD010966.pub4.

    PubMed 37983082
  • Southern KW, Murphy J, Sinha IP, Nevitt SJ. Corrector therapies (with or without potentiators) for people with cystic fibrosis with class II CFTR gene variants (most commonly F508del). Cochrane Database Syst Rev. 2020 Dec 17;12(12):CD010966. doi: 10.1002/14651858.CD010966.pub3.

    PubMed 33331662

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing VX-659/TEZ/IVA and IVA in people with Cystic Fibrosis, run by Vertex Pharmaceuticals Incorporated at 6 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: stopped early, as of the sponsor's last update on 5 Feb 2020. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 6 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 5 Feb 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Maximum Observed Concentration (Cmax) of VX-659, TEZ, and IVA (time frame: Day 1 and Day 15). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT03633526, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Feb 2020.

Free account

Log in to keep searching

You’ve used your 3 free searches. AzTrials is free: log in or create a free account to keep searching clinical trials and save the ones you want to follow.

Create a free accountLog in