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Trial details imported from ClinicalTrials.gov

For full trial details, please see the original record at https://clinicaltrials.gov/study/NCT05033080




Registration number
NCT05033080
Ethics application status
Date submitted
26/08/2021
Date registered
2/09/2021
Date last updated
3/10/2024

Titles & IDs
Public title
A Phase 3 Study of VX-121 Combination Therapy in Participants With Cystic Fibrosis (CF) Heterozygous for F508del and a Minimal Function Mutation (F/MF)
Scientific title
A Phase 3, Randomized, Double-blind, Controlled Study Evaluating the Efficacy and Safety of VX-121 Combination Therapy in Subjects With Cystic Fibrosis (CF) Who Are Heterozygous for F508del and a Minimal Function Mutation (F/MF)
Secondary ID [1] 0 0
2021-000712-31
Secondary ID [2] 0 0
VX20-121-102
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Cystic Fibrosis 0 0
Condition category
Condition code
Human Genetics and Inherited Disorders 0 0 0 0
Cystic fibrosis
Respiratory 0 0 0 0
Other respiratory disorders / diseases
Oral and Gastrointestinal 0 0 0 0
Other diseases of the mouth, teeth, oesophagus, digestive system including liver and colon
Inflammatory and Immune System 0 0 0 0
Connective tissue diseases
Inflammatory and Immune System 0 0 0 0
Other inflammatory or immune system disorders

Intervention/exposure
Study type
Interventional
Description of intervention(s) / exposure
Treatment: Drugs - VX-121/TEZ/D-IVA
Treatment: Drugs - ELX/TEZ/IVA
Treatment: Drugs - IVA
Treatment: Drugs - Placebo (matched to VX-121/TEZ/D-IVA)
Treatment: Drugs - Placebo (matched to ELX/TEZ/IVA)
Treatment: Drugs - Placebo (matched to IVA)

Active comparator: ELX/TEZ/IVA - Following elexacftor/tezacaftor/ivacaftor (ELX/TEZ/IVA) run-in period of 4 weeks, participants received ELX 200 milligram (mg) once daily (qd) /TEZ 100 mg qd/IVA 150 mg every 12 hours (q12h) in the treatment period for 52 weeks.

Experimental: VX-121/TEZ/D-IVA - Following ELX/TEZ/IVA run-in period of 4 weeks, participants received VX-121 20 mg qd/TEZ 100 mg qd/D-IVA 250 mg qd in the treatment period for 52 weeks.


Treatment: Drugs: VX-121/TEZ/D-IVA
Fixed-dose combination tablets for oral administration.

Treatment: Drugs: ELX/TEZ/IVA
Fixed-dose combination tablets for oral administration.

Treatment: Drugs: IVA
Tablet for oral administration.

Treatment: Drugs: Placebo (matched to VX-121/TEZ/D-IVA)
Placebo matched to VX-121/TEZ/D-IVA for oral administration.

Treatment: Drugs: Placebo (matched to ELX/TEZ/IVA)
Placebo matched to ELX/TEZ/IVA for oral administration.

Treatment: Drugs: Placebo (matched to IVA)
Placebo matched to IVA for oral administration.
Intervention code [1] 0 0
Treatment: Drugs
Comparator / control treatment
Control group

Outcomes
Primary outcome [1] 0 0
Absolute Change in Percent Predicted Forced Expiratory Volume in 1 Second (ppFEV1)
Timepoint [1] 0 0
From Baseline Through Week 24
Secondary outcome [1] 0 0
Absolute Change in Sweat Chloride (SwCl)
Timepoint [1] 0 0
From Baseline Through Week 24
Secondary outcome [2] 0 0
Percentage of Participants With SwCl <60 mmol/L (Pooled With Data From Study VX20-121-103)
Timepoint [2] 0 0
From Baseline Through Week 24
Secondary outcome [3] 0 0
Percentage of Participants With SwCl <30 mmol/L (Pooled With Data From Study VX20-121-103)
Timepoint [3] 0 0
From Baseline Through Week 24

Eligibility
Key inclusion criteria
Key

* Heterozygous for F508del and a minimal function mutation (F/MF genotype)
* Forced expiratory volume in 1 second (FEV1) value >=40% and <=90% of predicted mean for age, sex, and height for participants currently receiving ELX/TEZ/IVA therapy; FEV1 >=40% and <=80% for participants not currently receiving ELX/TEZ/IVA

Key
Minimum age
12 Years
Maximum age
No limit
Sex
Both males and females
Can healthy volunteers participate?
No
Key exclusion criteria
* History of solid organ or hematological transplantation
* Hepatic cirrhosis with portal hypertension, moderate hepatic impairment (Child Pugh Score 7 to 9), or severe hepatic impairment (Child Pugh Score 10 to 15)
* Lung infection with organisms associated with a more rapid decline in pulmonary status
* Pregnant or breast-feeding females

Other protocol defined Inclusion/Exclusion criteria may apply

Study design
Purpose of the study
Treatment
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s
The people administering the treatment/s
The people assessing the outcomes
The people analysing the results/data
Intervention assignment
Parallel
Other design features
Phase
Phase 3
Type of endpoint/s
Statistical methods / analysis

Recruitment
Recruitment status
Completed
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Anticipated
Actual
14/09/2021
Date of last participant enrolment
Anticipated
Actual
Date of last data collection
Anticipated
Actual
21/11/2023
Sample size
Target
Accrual to date
Final
435
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
Royal Prince Alfred Hospital - Camperdown
Recruitment hospital [2] 0 0
The Prince Charles Hospital - Chermside
Recruitment hospital [3] 0 0
Alfred Hospital - Melbourne, VIC
Recruitment hospital [4] 0 0
Mater Adult Hospital - South Brisbane
Recruitment hospital [5] 0 0
Queensland Children's Hospital - South Brisbane
Recruitment hospital [6] 0 0
Westmead Hospital - Westmead
Recruitment postcode(s) [1] 0 0
- Camperdown
Recruitment postcode(s) [2] 0 0
- Chermside
Recruitment postcode(s) [3] 0 0
- Melbourne, VIC
Recruitment postcode(s) [4] 0 0
- South Brisbane
Recruitment postcode(s) [5] 0 0
- Westmead
Recruitment outside Australia
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Funding & Sponsors
Primary sponsor type
Commercial sector/industry
Name
Vertex Pharmaceuticals Incorporated
Address
Country

Ethics approval
Ethics application status

Summary
Brief summary
The purpose of this study evaluates the efficacy and safety of VX-121/tezacaftor/deutivacaftor (VX-121/TEZ/D-IVA) in CF participants who were heterozygous for F508del and a minimal function mutation (F/MF participants).
Trial website
https://clinicaltrials.gov/study/NCT05033080
Trial related presentations / publications
Public notes

Contacts
Principal investigator
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries



Summary Results

For IPD and results data, please see https://clinicaltrials.gov/study/NCT05033080