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Summary: Background: Phase III trials have demonstrated the efficacy and safety of ustekinumab in ulcerative colitis (UC), but few real‐life long‐term data are currently available. Aims: To assess the real‐world effectiveness and safety of ustekinumab in patients with UC. Methods: From January to September 2019, all consecutive patients with active UC treated with ustekinumab in a GETAID centre were included. Patients were evaluated at week 52. Remission was defined as a partial Mayo Clinic score ≤2. Results: We included 103 patients with UC (62 men; mean age: 41.2 ± 16.2 years; 52% pancolitis E3) with an insufficient response to immunosuppressants, anti‐TNFs and/or vedolizumab. At week 52, 45 (44%) patients had discontinued ustekinumab mainly due to lack of effectiveness (n = 41). The cumulative probabilities of ustekinumab persistence were 96.1%, 81.6%, 71.7% and 58.4% after 3, 6, 9 and 12 months respectively. The overall steroid‐free clinical remission rate at week 52 was 32% of whom 71% had subscores of null for rectal bleeding and stool frequency. Ten patients underwent colectomy within a median of 6.7 [4.3‐10.6] months. Adverse effects were observed in 15 (16.9%) patients; 4 (4.5%) were severe, including one patient who died from a myocardial infarction. Conclusion: After 52 weeks, over one‐half of patients with refractory UC were still treated by ustekinumab and one‐third were in steroid‐free clinical remission. [ABSTRACT FROM AUTHOR]

Summary: Background: Phase III trials have demonstrated the efficacy and safety of ustekinumab in moderate‐to‐severe ulcerative colitis (UC), but few real‐world data are currently available. Aim: To assess short‐term effectiveness and safety of ustekinumab in patients with UC. Methods: From January to September 2019, all patients with UC treated with ustekinumab in 20 French GETAID centres were retrospectively included. The primary outcome was steroid‐free clinical remission (partial Mayo Clinic score ≤2) at weeks 12‐16 without a rectal bleeding subscore >1. Results: Among the 103 patients included, 70% had been previously exposed to ≥2 anti‐TNF agents and 85% to vedolizumab. At weeks 12‐16, steroid‐free clinical remission and clinical remission rates were 35.0% and 39.8% respectively; the absence of rectal bleeding with normal stool frequency was noted in 19.4% of patients. Two patients discontinued ustekinumab before the week 12‐16 visit and underwent surgery. In multivariable analysis, a partial Mayo Clinic score >6 at inclusion (18.6% vs 46.7%, P = 0.003) and a history of both exposure to anti‐TNF and vedolizumab therapies (27.3% vs 80.0%, P = 0.001) were negatively associated with steroid‐free clinical remission at weeks 12‐16. Adverse events occurred in 7.8% of patients and serious adverse events in 3.9% of patients. Conclusion: In a cohort of highly refractory patients with UC with multiple prior drug failures, ustekinumab provided steroid‐free clinical remission in one‐third of cases at weeks 12‐16. Clinical severity and previous use of anti‐TNF and vedolizumab therapies were associated with ustekinumab failure at weeks 12‐16. [ABSTRACT FROM AUTHOR]