USTekinumab in Fistulising Perianal Crohn's Disease (USTAP)

Phase IV Trial design : Multicentre, randomized, double-blind, placebo-controlled study Population : Moderate to severe Crohn\'s disease with at least one active perianal fistula track Investigational treatment : Group 1: Ustekinumab (UST) IntraVenous (IV) induction (6mg/kg) followed by UST SubCutaneous (SC) 90mg every 8 weeks. Group 2: Placebo IV followed by Placebo SC The trial duration for each patient will be 48 weeks. Trial objective : To evaluate the efficacy and safety of ustekinumab in fistulizing perianal Crohn\'s disease. Number of patients : A total of 146 patients will be included in 20 sites in France Trial duration : First patient in: Q3 2020 - Last patient first visit: Q3 2022 Last patient last visit: Q3 2023