Abstract

Abstract Background and Aims This post hoc analysis assessed the efficacy and safety of upadacitinib in patients with moderately to severely active ulcerative colitis stratified by corticosteroid use from the ulcerative colitis Phase 3 clinical trial programme. Methods Patients were randomised [1:2] to 8 weeks’ placebo or upadacitinib 45 mg once daily [QD]; Week 8 responders were re-randomised [1:1:1] to 52 weeks’ placebo, or upadacitinib 15 or 30 mg QD. Corticosteroid dose was kept stable during induction but tapered according to a protocol-defined schedule [or investigator discretion] during maintenance Weeks 0–8. Efficacy outcomes and exposure-adjusted treatment-emergent adverse event [TEAE] rates were assessed for induction and maintenance stratified by corticosteroid use at induction baseline. Results Overall, 377/988 [38%] patients were receiving corticosteroids at induction baseline [placebo, n = 133; upadacitinib 45 mg, n = 244] and 252 [37%] of the 681 clinical responders who entered maintenance were on corticosteroids at induction baseline [n = 84 for each treatment]. Similar proportions of patients receiving upadacitinib achieved clinical remission per Adapted Mayo Score with/without corticosteroids at Weeks 8 and 52. The total proportion of patients re-initiating corticosteroids was higher with placebo [24/84 (29%)] vs UPA 15 mg [16/81 (20%)] and 30 mg [11/81 (14%)]. During induction, patients receiving corticosteroids at baseline had higher rates of TEAEs, serious TEAEs, and serious infections vs those not receiving corticosteroids; however, TEAE rates were similar during maintenance after corticosteroid withdrawal. Conclusions Upadacitinib is an effective steroid-sparing treatment in patients with moderately to severely active ulcerative colitis.

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