The ECFS-CTN cannot guarantee that the information provided here is comprehensive. Please go to the ClinicalTrials.gov link for detailed and up-to-date information on study background, eligibility criteria, study design, outcome measures, study status, participating sites, sponsor contact information and timelines.

You can also contact the CTN coordinating centre for additional information: ECFS-CTN@uzleuven.be

Study Name on
ClinicalTrials.gov (link is external)
A Study of VX-121 Combination Therapy in Participants With Cystic Fibrosis (CF) Who Are Homozygous for F508del, Heterozygous for F508del and a Gating (F/G) or Residual Function (F/RF) Mutation, or Have At Least 1 Other Triple Combination Responsive (TCR) CFTR Mutation and No F508del Mutation
Study Drug VX-121/TEZ/D-IVA
Type of Study Drug CFTR Modulation
Study Title A Phase 3, Randomized, Double-blind, Controlled Study Evaluating the Efficacy and Safety of VX-121 Combination Therapy in Subjects With Cystic Fibrosis Who Are Homozygous for F508del, Heterozygous for F508del and a Gating (F/G) or Residual Function (F/RF) Mutation, or Have At Least 1 Other Triple Combination Responsive CFTR Mutation and No F508del Mutation
Study Phase 3
Study Sponsor Vertex

Link on
clinicaltrials.gov (link is external)

https://clinicaltrials.gov/ct2/show/NCT05076149 

Participating ECFS-CTN sites Please contact ecfs-ctn@uzleuven.be for most recent sitelist
Age Pediatric and Adult patients