The safety and efficacy of Remicade were assessed in two (ACT 1 and ACT 2) randomized, double- blind, placebo-controlled clinical studies in adult patients with moderately to severely active ulcerative colitis (Mayo score 6 to 12; Endoscopy subscore 2) with an inadequate response to conventional therapies [oral corticosteroids, aminosalicylates and/ or immunomodulators (6-MP, AZA)].