Extract

To the Editors

We read with interest the article by Dalal et al.,1 which reports favorable short-term clinical outcomes of upadacitinib 45 mg daily in patients with acute severe ulcerative colitis (UC). The study demonstrates high rates (86%) of steroid-free clinical remission 8-16 weeks after treatment initiation in a real-world setting with 7 of the 9 patients being steroid-refractory and having prior exposure to tumor necrosis factor inhibitor therapy.

Given the urgency in managing acute severe UC, where rapid deterioration can lead to severe complications and consequently the need for colectomy, the speed of onset of therapeutic effects is not merely beneficial but crucial to improve patient outcomes. In addition, there exists a prevailing conception that therapeutic effects manifest more rapidly in UC than in Crohn’s disease (CD).2 Therefore, we seek additional details on the induction of clinical remission during the hospital stay beyond the presented C-reactive protein reductions on day 2, provided such data are available.

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