The natural history of COVID-19 in patients with IBD: A nationwide study by the hellenic society for the study of IBD

ABSTRACT

Introduction: COVID-19 has evolved into a global health crisis, variably affecting the management of patients with chronic illnesses. Patients with inflammatory bowel disease (IBD) may represent a vulnerable population due to the frequent administration of immune-modifying treatments. Aims & Methods: We aimed to depict the natural history of COVID-19 infection in Greek patients with IBD at a nationwide level via the unbiased reporting of all cases that were registered during the first and second waves of the pandemic. Following a national call from the Hellenic Society for the study of IBD, we enrolled all IBD patients with established diagnoses of COVID-19. Clinical and epidemiological data, including COVID-19 modifying factors and IBDassociated therapies, were analyzed against adverse outcomes (hospitalization, ICU admission, and death). Results: We identified 160 IBD patients who were diagnosed with COVID- 19 during the study period (male56.9%;mean age=41.6 [SD=14.8] years;CD64.4%). Adverse outcomes were reported in 34 patients (21.3%), including 3 ICU admissions (1.9%) and 2 deaths (1.3%). As shown in the table prognostic factor for adverse events due to COVID-19 in IBD patients were sought. Through multivariate logistic regression age (OR=1.04, 95% CI=1-1.08) and dyspnoea at presentation (OR=8.72, 95% CI=2.14-35.57) were identified as negative prognostic factors while there was also a tendency for fever at presentation (OR=3.23, 95% CI=0.91-11.43). In contrast, treatment with biologics, in particular anti-TNF agents, exerted a protective effect against an unfavorable course COVID-19 (OR=0.33, 95% CI=0.13-0.84). Patients on subcutaneous biologics were more likely to halt treatment due to the infection as compared to those on intravenous medications. Conclusion: IBD patients who developed COVID-19 had a benign course with adverse outcomes being scarce. Treatment with biologics had a beneficial effect, supporting the continuation of therapy during the pandemic. (Table Presented).