Supplementary Material for: Efficacy of Dose Escalation of Ustekinumab in Inflammatory Bowel Disease: A Systematic Review and Meta-Analysis

Background: Ustekinumab is an effective drug in the treatment of inflammatory bowel disease (IBD), but inadequate response or loss of response is reported in several patients. Dose escalation by intravenous reinduction or interval shortening may be a suitable option to recapture response. We undertook a systematic review and meta-analysis to assess the efficacy of dose escalation in IBD patients receiving ustekinumab. Methods: A systematic literature search was conducted on PubMed, Embase, Clinicaltrails.gov and Cochrane from inception to June 1st, 2024. We conducted a proportional meta-analysis on MetaXL. Our primary outcomes were clinical response and clinical remission. Results: Twenty-eight articles were included (n = 2,129 patients). Eighteen studies (692 patients out of 1,218) reported clinical response, with pooled prevalence of 55% (95% CI: 46% - 65%). Out of 1,041 patients, 524 showed clinical remission with pooled prevalence of 51% (95%CI: 42% - 59%). Conclusion: This systematic review and meta-analysis showcased promising results, in terms of clinical response and remission, in IBD patients receiving dose escalation of ustekinumab.