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Background The use of biological therapies and small molecules have been a concern for patients with inflammatory bowel disease (IBD) during COVID-19 pandemic. We aim to assess the association between risk of COVID-19 related hospitalization and these agents. Methods A systematic review and meta-analysis of all published studies from December 2019 to September 2021 was performed to identify studies that reported COVID-19 related hospitalization in IBD patients receiving biological therapies or tofacitinib. The risk ratio (RR) was calculated to compare the relative risk of COVID-19 related hospitalization in patients receiving these medications to those who were not, at the time of the study. Results 18 studies were included. The relative risk of hospitalization was significantly lower in patients with IBD and COVID-19 who were receiving biologic therapy with RR of 0.47 (95% CI: 0.42–0.52, p &amp;lt; 0.00001). The RR was lower in patients receiving anti-TNFs compared to those who did not [RR= 0.48 (95% CI: 0.41–0.55, p &amp;lt; 0.00001)]. Similar finding was observed in patients taking ustekinumab [RR= 0.55 (95% CI: 0.43–0.72, p &amp;lt; 0.00001)]. Combination therapy of anti-TNF and an immunomodulator did not lower the risk of COVID-19 related hospitalization [RR= 0.98 (95% CI: 0.82–1.18, p =0.84]. The use of vedolizumab [RR= 1.13 (95% CI: 0.75–1.73, p =0.56] and tofacitinib [RR= 0.81 (95% CI: 0.49–1.33, p =0.40] was not associated with lower risk of COVID-19 related hospitalization. Conclusion Regarding COVID-19 related hospitalization in IBD, anti-TNFs and ustekinumab were associated with decreased risk of hospitalization. In addition, vedolizumab and tofacitinib were not associated with COVID-19 related hospitalization.

P568 Impact of Biologics and Small Molecules for Inflammatory Bowel Disease on COVID-19 Related Hospitalization: A Systematic Review and Meta-analysis