Sars-Cov-2 Infection in 898 Patients with Sjogren's Syndrome: Characteristics Associated with Poor Outcomes

ABSTRACT

Objectives. To determine characteristics associated with a more severe COVID-19 outcome in people with Sjogren's disease (SJD). Methods. People with SJD and COVID-19 reported to two international registries (Sjogren Big Data Consortium and COVID-19 Global Rheumatology Alliance) from March 2020 to October 2021 were included. An ordinal COVID-19 severity scale was defined (1) not hospitalized, (2) hospitalized with no ventilation, (3) hospitalized requiring non-invasive ventilation, (4) hospitalized requiring invasive ventilation, and (5) death. Odds ratios (OR) were estimated using a multivariable ordinal logistic regression model adjusted for age, sex, comorbidities and anti-rheumatic medications included as covariates. Results. A total of 898 people with SJD were included (825 (91.8%) women, mean age SARS-CoV-2 infection diagnosis 55.5 years), including 652 patients with primary SJD and 246 with other associated systemic rheumatic diseases. 33.9% were hospitalized, 14.5% required ventilation, and 4.3% died. In the multivariable model, older age (OR 1.03, 95% CI 1.02 to 1.05), male sex (OR 1.81, 95% CI 1.10 to 2.92), two or more comorbidities (OR 2.99, 95% CI 1.92 to 4.67;vs none), baseline therapy with corticosteroids (OR 2.04, 95% CI 1.20 to 3.46), immunosuppressive agents (OR 2.09, 95% CI 1.30 to 3.38) and B-cell depleting agents (OR 5.38, 95% CI 2.77 to 10.47) were associated with worse outcomes (reference for all medications hydroxychloroquine only). Conclusions. More severe COVID-19 outcomes in individuals with Sjogren's are largely driven by demographic factors and baseline comorbidities. Patients using immunosuppressants, especially rituximab, also experienced more severe outcomes.