Severe Activity of Inflammatory Bowel Disease is a Risk Factor for Severe COVID-19

Lay Summary This retrospective, observational study on patients with inflammatory bowel disease and severe acute respiratory syndrome coronavirus 2 infection showed that severe inflammatory bowel disease activity was the only independent risk factor for severe coronavirus disease 2019. Background Data from the first wave of the coronavirus disease 2019 (COVID-19) pandemic suggested that patients with inflammatory bowel disease (IBD) are not at higher risk of being infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) than the general population and that a worse prognosis is not associated with immunomodulatory drugs, with the possible exception of systemic steroids. Methods This retrospective, observational study included consecutive IBD patients from the Sicilian Network for Inflammatory Bowel Disease (SN-IBD) cohort who had a SARS-CoV-2 infection diagnosis (polymerase chain reaction-confirmed presence of the viral genome in a nasopharyngeal swab) during the second COVID-19 pandemic wave (September 2020 to December 2020). Data regarding demographics, IBD features and treatments, and comorbidities were analyzed in correlation with COVID-19 clinical outcomes. Results Data on 122 patients (mean age, 43.9 +/- 16.7 years; males, 50.0%; Crohn's disease, 62.3%; ulcerative colitis, 37.7%) were reported. Twelve patients developed COVID-19-related pneumonia (9.8%), 4 (3.3%) required respiratory assistance (nonmechanical ventilation or orotracheal intubation), and 4 died (case fatality rate, 3.3%). In a multivariable analysis, age (odds ratio [OR], 1.034; 95% CI, 1.006-1.147; P = .032) and severe IBD activity (OR, 13.465; 95% CI, 1.104-164.182; P = .042) were independent predictors of COVID-19-related pneumonia, while severe IBD activity (OR, 15.359; 95% CI, 1.320-178.677; P = .030) was the only independent predictor of severe COVID-19, a composite endpoint defined as the need for respiratory assistance or death. A trend towards a protective role of tumor necrosis factor alpha inhibitors on pneumonia development was reported (P = .076). Conclusions In this cohort of patients with IBD and SARS-CoV-2 infection, severe IBD activity was the only independent risk factor for severe COVID-19.

Automated summary

This retrospective study found that severe inflammatory bowel disease was an independent risk factor for severe COVID-19. Patients with inflammatory bowel disease did not have a higher risk of SARS-CoV-2 infection compared to the general population, and a worse prognosis was not typically associated with immunomodulatory drugs.