Last updated on January 2020

Study to Assess Efficacy and Safety of Cx601 Adult Allogeneic Expanded Adipose-derived Stem Cells (eASC) for the Treatment of Complex Perianal Fistula(s) in Participants With Crohn's Disease (CD)


Brief description of study

The purpose of this study is to evaluate the combined remission of complex perianal fistulas, defined as the clinical assessment at Week 24 of closure of all treated external openings that were draining at baseline despite gentle finger compression, and absence of collections greater than (>) 2 centimeter (cm) (in at least 2 dimensions) confirmed by blinded central magnetic resonance imaging (MRI) assessment at Week 24.

Detailed Study Description

This study is to assess the efficacy and safety of Cx601, eASC, for the treatment of complex perianal fistulas in participants with Crohn's disease.

The study will enroll approximately 554 participants.

  • Cx601 eASCs intralesional injection
  • Placebo - Cx601 placebo-matching eASCs intralesional injection

Study treatments will be allocated, on a 1:1 ratio, by central randomization through interactive web response system (IWRS). The study will follow an add-on design, participants receiving any ongoing concomitant medical treatment, at stable doses at the time of screening, for the CD will be allowed to continue it throughout the study.

The primary efficacy analysis, will be conducted at Week 24 timepoint. The double blind design will be maintained up to Week 52 (both participant and investigator) by a specific blinding for study treatment administration and for evaluating its efficacy.

This multicenter trial will be conducted globally across 150 centers. The overall time to participate in this study is approximately 5 years.

Clinical Study Identifier: NCT03279081

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