Rates of clinical remission and inadequate response to advanced therapies among patients with ulcerative colitis in Germany

PURPOSE: Many patients treated for ulcerative colitis (UC) do not achieve clinical remission. This real-world study assessed clinical remission and inadequate response rates among patients with UC in Germany treated with advanced therapies. METHODS: This retrospective chart review included patients with UC newly initiating advanced (index) therapy (anti-TNFα agents, vedolizumab, tofacitinib) from January 2017–September 2019 (index date). Included patients had data for ≥ 12 months before (baseline period) and after the index date (follow-up period). Remission was defined as a partial Mayo score ≤ 1. Indicators of inadequate response were: index therapy discontinuation; therapy adjustments (index therapy dose escalation; augmentation with non-advanced therapies; corticosteroid [CS] use during maintenance therapy); CS dependency (use for ≥ 12 weeks); and UC-related hospitalisation, surgery or emergency department visit. Time to first remission and inadequate response were analyzed using Kaplan–Meier analyses. RESULTS: Among 149 patients with UC (median age: 40 years), 96 (64.4%) were biologic-naïve and 42 (28.2%) received CS at the index date. Within 12 months, 52 patients (47.2%) were in remission; of these, 13 patients (25.0%) received ≥ 1 therapy adjustment. At 12 months, 55 patients (37.6%) had ≥ 1 indicator of an inadequate response. Median time to remission was longer among biologic-experienced vs biologic-naïve patients (24 vs 7 months; p = 0.012). CONCLUSION: Over half of the patients were not in clinical remission after 12 months and more than one-third experienced inadequate response. One-quarter of patients in remission required therapy adjustments. Patients with UC require therapies that are more effective than those currently available to achieve better treatment outcomes. SUPPLEMENTARY INFORMATION: The online version contains supplementary information available at 10.1007/s00384-023-04397-7.