VTX002 Versus Placebo for the Treatment of Moderately to Severely Active Ulcerative Colitis

This is a multicenter, randomized, double-blind, placebo-controlled study to evaluate the efficacy and safety of VTX002 in subjects with moderately to severely active UC following daily oral administration of VTX002 as a tablet. Approximately 189 eligible subjects will be randomized in a 1:1:1 ratio to receive VTX002 Dose A, VTX002 Dose B, or matching placebo, once daily (approximately 63 subjects per treatment group). The study consists of a 28-day Screening Period, a 13-week double-blind Induction Treatment Period (including 7 days of titration followed by 12 weeks of treatment at the assigned dose), a Long-Term Extension (LTE) Treatment Period of up to 39 weeks, an Open-Label Extension (OLE) Treatment Period of up to 143 weeks, and a 2-week Follow-Up Period. The maximal duration of treatment including the Induction Period, LTE and OLE will be 36 months. Objectives Primary Objective • Assess the efficacy of VTX002 when administered for 13 weeks on clinical remission Secondary Objectives * Assess the efficacy of VTX002 when administered for 13 weeks on endoscopic changes, symptomatic response and remission, histology, and mucosal healing * Assess the safety and tolerability of VTX002 * Assess the pharmacokinetics (PK) of VTX002 Long-Term and Open-Label Extension Objectives * Assess the efficacy of VTX002 through the LTE and OLE Treatment Periods on endoscopic changes, symptomatic response and remission, histology, and mucosal healing * Assess the safety of VTX002 through the LTE and OLE Treatment Periods