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CFTR Modulator

VX-121 Combination Therapy for Cystic Fibrosis

Phase 3
Waitlist Available
Research Sponsored by Vertex Pharmaceuticals Incorporated
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Completed study drug treatment in a parent study VX20-121-102 (NCT05033080) and VX20-121-103 (NCT05076149); or had study drug interruption(s) in a parent study but did not permanently discontinue study drug, and completed study visits up to the last scheduled visit of the Treatment Period in the parent study
Must not have
Pregnant or breast-feeding females
Timeline
Screening 3 weeks
Treatment Varies
Follow Up up to 5 years
Awards & highlights
No Placebo-Only Group
Pivotal Trial

Summary

This trialstudies the safety and effectiveness of a drug for people with cystic fibrosis over the long-term.

Who is the study for?
This trial is for individuals with cystic fibrosis who previously participated in certain VX-121 studies and completed the treatment or visits, even if they had interruptions. It's not open to pregnant or breastfeeding women or those who couldn't tolerate the drug before.
What is being tested?
The study is testing the long-term safety and effectiveness of a combination therapy called VX-121/TEZ/D-IVA designed for people with cystic fibrosis to see how well it works over an extended period.
What are the potential side effects?
While specific side effects are not listed here, participants will be monitored for any adverse reactions to ensure the long-term safety and tolerability of the VX-121 combination therapy.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
I completed or was part of the VX20-121-102 or VX20-121-103 study without permanently stopping the study drug.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I am not pregnant or breastfeeding.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~up to 5 years
This trial's timeline: 3 weeks for screening, Varies for treatment, and up to 5 years for reporting.

Treatment Details

Side effects data

From 2023 Phase 3 trial • 435 Patients • NCT05033080
32%
Infective pulmonary exacerbation of cystic fibrosis
26%
COVID-19
20%
Cough
17%
Nasopharyngitis
13%
Upper respiratory tract infection
12%
Nasal congestion
11%
Oropharyngeal pain
11%
Blood creatine phosphokinase increased
11%
Headache
10%
Pyrexia
10%
Sputum increased
9%
Viral upper respiratory tract infection
8%
Back pain
8%
Nausea
8%
Fatigue
7%
Rhinorrhoea
7%
Diarrhoea
7%
Abdominal pain
6%
Respiratory tract infection
5%
Arthralgia
5%
Abdominal distension
5%
Haemoptysis
5%
Influenza
5%
Alanine aminotransferase increased
5%
Sinusitis
4%
Aspartate aminotransferase increased
4%
Rash
3%
Abdominal pain upper
2%
Sinus congestion
2%
Productive cough
1%
Constipation
100%
80%
60%
40%
20%
0%
Study treatment Arm
ELX/TEZ/IVA
VNZ/TEZ/D-IVA

Awards & Highlights

No Placebo-Only Group
All patients enrolled in this study will receive some form of active treatment.
Pivotal Trial
The final step before approval, pivotal trials feature drugs that have already shown basic safety & efficacy.

Trial Design

1Treatment groups
Experimental Treatment
Group I: VX-121/TEZ/D-IVAExperimental Treatment1 Intervention
Part A: Participants will receive VX-121/TEZ/D-IVA once daily for 96 weeks. Part B: Participants will receive VX-121/TEZ/D-IVA once daily for an additional 48 weeks.
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Deutivacaftor
Not yet FDA approved

Find a Location

Who is running the clinical trial?

Vertex Pharmaceuticals IncorporatedLead Sponsor
257 Previous Clinical Trials
34,247 Total Patients Enrolled
128 Trials studying Cystic Fibrosis
17,123 Patients Enrolled for Cystic Fibrosis

Media Library

VX-121/TEZ/D-IVA (CFTR Modulator) Clinical Trial Eligibility Overview. Trial Name: NCT05444257 — Phase 3
Cystic Fibrosis Research Study Groups: VX-121/TEZ/D-IVA
Cystic Fibrosis Clinical Trial 2023: VX-121/TEZ/D-IVA Highlights & Side Effects. Trial Name: NCT05444257 — Phase 3
VX-121/TEZ/D-IVA (CFTR Modulator) 2023 Treatment Timeline for Medical Study. Trial Name: NCT05444257 — Phase 3
~375 spots leftby Oct 2026