Study of Efficacy and Safety of Investigational Treatments in Patients With Moderate to Severe Hidradenitis Suppurativa

This is a randomized, subject and investigator-blinded, placebo-controlled, multi-center and parallel-group non-confirmatory study to assess the efficacy, safety and tolerability of five investigational drugs, CFZ533 (iscalimab), LYS006, MAS825, LOU064 (remibrutinib) and VAY736 (ianalumab) in subjects with moderate to severe hidradenitis suppurativa. All participants from Cohorts A, B and C had planned a 16-week treatment period and 12-week safety follow up period. All participants for Cohort D had planned a 16-week treatment period and 4-week safety follow up period. All participants for Cohort E had planned a 16-week treatment period and a mandatory 16-week safety follow-up period, plus a conditional follow-up period for up to 84 weeks for a total maximum follow up period of 2 years. Cohorts A-D are completed and Cohort E is ongoing.