“…In our previous report, including 83 patients with severe IIVT-refractory UC, the early colectomy rate (defined as surgery performed within 2 months) was higher in patients receiving one IFX infusion compared with those receiving two or more infusions (35% vs 5.3%, respectively), suggesting that two or three infusions work better than one single infusion. 15 In the randomised controlled trial by Jarnerot et al, 8 the early colectomy rate after one single IFX infusion was 29%. Similar percentages have been reported in two recently published large observational retrospective studies from Denmark and Sweden, 22,23 in which a flexible IFX induction regimen was used (approximately 50% of patients in both studies received a single IFX infusion).…”