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A Phase 1/2 Dose-escalation Study Evaluating the Safety, Tolerability, and Efficacy of VX-522 in Subjects 18 Years of Age and Older With Cystic Fibrosis and a CFTR Genotype Not Responsive to CFTR Modulator Therapy

Status
Recruiting
Phases
Phase 1Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-504786-23-00
Acronym
VX21-522-001
Enrollment
10
Registered
2023-09-27
Start date
2024-11-18
Completion date
Unknown
Last updated
2025-11-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Cystic Fibrosis

Brief summary

Safety and tolerability, based on the assessment of adverse events (AEs), clinical laboratory values (serum chemistry, hematology, coagulation, and urinalysis), standard 12-lead ECGs, vital signs, pulse oximetry, spirometry, and immune response to VX-522 components and CFTR protein through the Week 8 Visit

Detailed description

MAD T1: Change from baseline in percent predicted forced expiratory volume in 1 second (ppFEV1) at Day 29, MAD T2: Change from baseline and pre-Run-in baseline in ppFEV1 at Day 29, Safety based on the assessment of AEs, clinical laboratory values (serum chemistry, hematology, coagulation, and urinalysis), standard 12-lead ECGs, vital signs, pulse oximetry, spirometry, and immune response to VX-522 components and CFTR protein through the Safety Follow-up Visit

Interventions

DRUGVX-522 Nebuliser dispersion

Sponsors

Vertex Pharmaceuticals Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to 64 Years

Design outcomes

Primary

MeasureTime frame
Safety and tolerability, based on the assessment of adverse events (AEs), clinical laboratory values (serum chemistry, hematology, coagulation, and urinalysis), standard 12-lead ECGs, vital signs, pulse oximetry, spirometry, and immune response to VX-522 components and CFTR protein through the Week 8 Visit

Secondary

MeasureTime frame
MAD T1: Change from baseline in percent predicted forced expiratory volume in 1 second (ppFEV1) at Day 29, MAD T2: Change from baseline and pre-Run-in baseline in ppFEV1 at Day 29, Safety based on the assessment of AEs, clinical laboratory values (serum chemistry, hematology, coagulation, and urinalysis), standard 12-lead ECGs, vital signs, pulse oximetry, spirometry, and immune response to VX-522 components and CFTR protein through the Safety Follow-up Visit

Countries

Belgium, Germany, Italy, Netherlands, Spain, Sweden

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026