4.6 Article

Lower incidence of COVID-19 in patients with inflammatory bowel disease treated with non-gut selective biologic therapy

Journal

JOURNAL OF GASTROENTEROLOGY AND HEPATOLOGY
Volume 36, Issue 11, Pages 3050-3055

Publisher

WILEY
DOI: 10.1111/jgh.15591

Keywords

Biologic therapy; COVID-19; Inflammatory bowel disease; SARS-CoV-2

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Following the outbreak of COVID-19, concerns were raised about the susceptibility of inflammatory bowel disease (IBD) patients under biologic therapy. This study in Italy showed that IBD patients on biologic therapy do not have a higher risk of COVID-19 compared to the general population, with non-gut selective agents associated with lower incidence of symptomatic disease.
Background and Aim Since the outbreak of COVID-19, concerns have been raised as to whether inflammatory bowel disease (IBD) patients under biologic therapy may be more susceptible to the disease. This study aimed to determine the incidence and outcomes of COVID-19 in a large cohort of IBD patients on biologic therapy. Methods This observational retrospective multicenter study collected data about COVID-19 in IBD patients on biologic therapy in Italy, between February and May 2020. The main end-points were (i) to assess both the cumulative incidence and clinical outcome of COVID-19, according to different biologic agents and (ii) to compare them with the general population and a cohort IBD patients undergoing non-biologic therapies. Results Among 1816 IBD patients, the cumulative incidence of COVID-19 was 3.9 per 1000 (7/1816) with a 57% hospitalization rate and a 29% case-fatality rate. The class of biologic agents was the only risk factor of developing COVID-19 (P = 0.01). Non-gut selective agents were associated with a lower incidence of COVID-19 cases, related symptoms, and hospitalization (P < 0.05). Compared with the general population of Lombardy, an overall lower incidence of COVID-19 was observed (3.9 vs 8.5 per 1000, P = 0.03). Compared with 565 IBD patients on non-biologic therapies, a lower rate of COVID-19 symptoms was observed in our cohort (7.5% vs 18%, P < 0.001). Conclusions Compared with the general population, IBD patients on biologic therapy are not exposed to a higher risk of COVID-19. Non-gut selective agents are associated with a lower incidence of symptomatic disease, supporting the decision of maintaining the ongoing treatment.

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