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 (link sends e-mail)

Study Name on
ClinicalTrials.gov (link is external)
Study of VX-809 Alone and in Combination With VX-770 in Cystic Fibrosis (CF) Patients Homozygous or Heterozygous for the F508del-CFTR Mutation
Study DrugVX-809 and VX-770
Type of Study DrugCFTR modulation
Study TitleA Phase 2, Multicenter, Double-Blinded, Placebo-Controlled, Multiple-Dose Study to Evaluate Safety, Tolerability, Efficacy, Pharmacokinetics and Pharmacodynamics of VX-809 Alone and in Combination With VX-770 in Subjects With Cystic Fibrosis, Homozygous or Heterozygous for the F508del-CFTR Mutation
Study Phase2
Study SponsorVertex Pharmaceuticals Incorporated

Link on
clinicaltrials.gov (link is external)

http://clinicaltrials.gov/ct2/show/study/NCT01225211 (link is external)

Participating ECFS-CTN sitesBelgium: Leuven
France: Lyon, West-Paris (Cochin)
Germany: Berlin, Cologne, Frankfurt
Sweden: Gothenburg
UK: London
Age18 years and older