P433 A real-world observational study assessing treatment persistence in ulcerative colitis patients receiving anti-TNF treatment (golimumab or adalimumab)

Abstract Background There are limited published observational data describing both clinical outcomes and treatment persistence rates for anti-TNFs used to treat ulcerative colitis (UC), particularly for golimumab. Based on published literature the outcomes demonstrated in clinical trials do not necessarily translate into clinical practice, highlighting the importance of real-world studies. In this study, we evaluated treatment persistence, switching patterns, and colectomy outcomes between golimumab and adalimumab in the real-world setting. Methods A retrospective chart review was conducted across 16 NHS sites in the UK. Data describing demographics, treatment history and colectomy were collected for UC patients treated with either golimumab or adalimumab. Patients were receiving golimumab or adalimumab as first or second-line therapy and initiating treatment between 1 March 2016 and 30 September 2017. Patients enrolled were required to have at least 6 months of data for analyses, and were followed within 12 months where the data were available. Kaplan–Meier analysis was conducted to assess time to discontinuation and also time to colectomy; log-rank tests were used to compare the two treatment arms. Results A total of 183 patients, (87 golimumab, 96 adalimumab), mean age was 45.6 years (46.8 years golimumab; 44.4 years adalimumab) and 59.6% were male (71.3% golimumab; 49.0% adalimumab), were included. Overall, 79.8% (78.2% golimumab; 81.3% adalimumab) of patients were receiving their first-line biologic. Treatment persistence with golimumab or adalimumab were relatively similar; 64.4% of golimumab and 64.6% of adalimumab patients remaining on treatment at 12 months (p = 0.7, Figure 1). Of the 65 patients who discontinued treatment within 12 months, 48.4% golimumab and 64.7% adalimumab switched to another biologic. Of those patients who switched, vedolizumab was the most commonly prescribed drug (56.8%), followed by infliximab biosimilar (Inflectra/Remsima) (29.7%) and infliximab (Remicade) (13.5%). Colectomy-free survival was demonstrated by 92.0% golimumab and 91.7% of adalimumab patients 12 months post-treatment initiation (p = 0.7). Conclusion The real-world data collected in this study demonstrate comparable treatment persistence for golimumab compared with adalimumab 12 months following treatment initiation. Colectomy-free survival was relatively similar within 1 year.