Robert Gilmore, Richard Fernandes, Imogen Hartley, Arteen Arzivian, Rupert Leong, Bridgette Andrew, Abhinav Vasudevan, Tessa Greeve, Gregory Thomas Moore, Steven Kim, Daniel Lightowler, Abhey Singh, Gillian Mahy, Aditya Mithanthaya, Kannan Venugopaul, Sangwoo Han, Robert Bryant, Jack West, Jonathan Segal, Britt Christensen, Crispin Corte, Nik Ding, Yoon-Kyo An, Jakob Begun
Received August 12, 2024 Accepted October 7, 2024 Published online December 20, 2024
Background/Aims Upadacitinib is a novel selective Janus kinase inhibitor approved for use in ulcerative colitis. Clinical trials had rigorous criteria and excluded many patient subgroups. Given limited real-world effectiveness data, we examined outcomes of patients treated with upadacitinib for ulcerative colitis in a real-world population.
Methods Patients that commenced upadacitinib for moderate-to-severe ulcerative colitis from September 2022 until March 2023 were identified at 13 inflammatory bowel disease centers across Australia. Clinical, biochemical, endoscopic, and intestinal ultrasound outcomes were recorded retrospectively at baseline, week 8, and week 16.
Results One hundred and fifty-two patients (61 female [40%], median age 38 years [interquartile range, 28–50]) were included. The primary endpoint of clinical remission was met in 79% at week 8, and 84% at week 16. A total of 42 patients (28%) with prior tofacitinib exposure were included. No significant difference in clinical remission was observed by week 16 between tofacitinib experienced compared to tofacitinib naïve patients (86% vs. 84%, P= 0.67). Complete intestinal ultrasound data was available for 36 patients, showing transmural remission in 64% at week 8 and 81% at week 16, with a decrease in median bowel wall thickness of 2.3 mm and 2.4 mm, respectively.
Conclusions Upadacitinib resulted in high rates of clinical remission at 8 and 16 weeks in this large real-world cohort of ulcerative colitis patients. Upadacitinib is effective in patients with prior tofacitinib exposure. Intestinal ultrasound shows significant rates of transmural remission at week 8, sustained through week 16.
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Letter: Toward Intra‐Class Switching With JAK Inhibitors? Mathieu Uzzan, David Laharie Alimentary Pharmacology & Therapeutics.2025; 61(5): 919. CrossRef
Background/Aims The residual risk of colectomy after infliximab salvage in steroid-refractory acute severe ulcerative colitis (ASUC) is required to inform the need for subsequent maintenance biologic therapy. The aim of this study was to determine the dynamic response of common serum biomarkers to infliximab salvage and assess their utility in predicting subsequent colectomy.
Methods A retrospective single-center cohort study was conducted on all patients who received infliximab salvage for steroid-refractory ASUC between January 1, 2010, and July 31, 2019. Biomarkers were assessed on admission and days 1 and 3 post infliximab, and included C-reactive protein (CRP)-albumin-ratio (CAR), CRP-lymphocyte-ratio (CLR), platelet-lymphocyte-ratio (PLR) and neutrophil-lymphocyte-ratio (NLR).
Results Of 94 patients (median age, 35 years; 67% of male), 20% required colectomy at 12 months. Biomarkers on day 3 post-infliximab best differentiated nonresponders, who had higher CRP, lower albumin and lower lymphocyte count (each P< 0.05). Day 3 predictive performance (area under the curve) for 12-month colectomy was best for CAR (0.871) and CLR (0.874), which were similar to Lindgren (0.829; P> 0.05) but superior to Mayo (0.726), partial Mayo (0.719), PLR (0.719), Ho index (0.714), NLR (0.675), Travis score (0.657) and endoscopic Mayo (0.609) (each P< 0.05). A day 3 CAR cutoff of 0.47 mg/g had 79% sensitivity, 80% specificity, 94% negative predictive value (NPV) to predict colectomy; while a day 3 CLR cutoff of 6.0 mg/109 had 84% sensitivity, 84% specificity, 96% NPV.
Conclusions CAR and CLR measured on day 3 post infliximab salvage for steroid-refractory ASUC represent simple and routinely performed biomarkers that appear to be strong predictors of colectomy. Prospective studies are required to confirm the utility of these predictive scores.
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