AB0690 HOW DID COVID-19 AFFECT PATIENTS WITH RHEUMATIC AND MUSCULOSKELETAL DISEASES TREATED WITH DMARDs – EXPERIENCE FROM A ROMANIAN RHEUMATOLOGY HOSPITAL

Background: Certainly, the year 2020 changed the healthcare system due to SARS-CoV2 pandemic that affected globally, more than 100 million people, causing more than 2 million of deaths worldwide. The evidence of how this infection impact patients with rheumatic and musculoskeletal diseases treated with disease modifying anti-rheumatic drugs is still an unmet need. Objectives: The main focus of this study is to evaluate the influence of DMARDs therapy on the evolution of COVID-19 disease in patients with RMDs. The second objective is to study and find correlations between the severity of infection in patients with rheumatic diseases. Methods: A retrospective observational study was conducted between June 2020 and January 2021, enrolling 81 patients with rheumatic diseases that went through SARS-CoV2 infection. The data was collected using patients’ clinical documents and through telemedicine, in accordance with EULAR COVID-19 Rheumatological Database. Results: Among the 81 patients, 53 (65,43%) were females and 28 (34,56%) were males. The mean age was 47,9 years old (49,49 years old for females and 45,25 years old for males). The majority lives in urban areas – 62 patients (76,54%). The temporal trends of COVID-19 observed in this cohort was in consonance with the evolution of the pandemic in Romania: one third of cases were recorded between June and October 2020 and two-thirds between November 2020 and January 2021, when the number of COVID-19 cases tripled in the general population. Surprisingly, more than 27% of patients in this study were asymptomatic at the time of COVID-19 diagnosis. They were tested according to the protocol before admission to the hospital. 9,8% of patients also asymptomatic, were tested positive as a screening before leaving the country. The majority (45,6%) were symptomatic or contact with someone infected with SARS-CoV2-and tested positive with RT-PCR. We divided the cohort in 3 groups: patients with mild infection that required no hospitalization (22 patients counting for 27,16%), moderate infection – hospitalization but not in the Intensive Care Unit (52 patients – 64,19%) and severe infection – admission to the ICU/deaths (7 patients in the ICU, 4 deaths – 4,9%). Mild and moderate COVID 19 disease was identified in patients with axial spondyloarthtis (56,7%), with remission or with low disease activity, with a few or no comorbidities, with a mean age of 47,56 years old and also in patients in treatment with MTX (14,86%) or TNF alfa inhibitors (35,13%). 51% of patients stopped the therapy during COVID19 diseases. Factors correlated with severe infection and death were age (the mean age was 62,14), high and moderate disease activity RA, overlap syndromes (RA with SLE or Sjogren Syndrome) and important cardiovascular comorbidities. Two of the deceased patients were in treatment with MTX and RTX (the last infusion was more than 6 months). Conclusion: The data in our study suggests that the use of cs DMARDs (MTX) and TNF alfa inhibitors is associated with better outcomes for patients with RMDs and COVID-19. These results are in accordance with the data found in literature [1,2,3]. The limitation of this study is the little number of patients and the fact that the real number of COVID-19 cases might be higher in reality due to asymptomatic or pauci-symptomatic patients. References: [1]Filiere des Maladies Autoimmunes et Autoinflammatoires Rares (FAI2R); Hopital Huriez, CHU Lille, Univ. Lille, Lille, France, Severity of COVID-19 and survival in patients with rheumatic and inflammatory diseases: data from the French RMD COVID-19 cohort of 694 patients, Annals of the Rheumatic Diseases Published Online First: 02 December 2020 [2]Sanchez-Piedra C et al., On behalf of the BIOBADASER study group, et al, Clinical features and outcomes of COVID-19 in patients with rheumatic diseases treated with biological and synthetic targeted therapies,Annals of the Rheumatic Diseases 2020;79:988-990. [3]Hyrich, K.L et al. Rheumatic disease and COVID-19: epidemiology and outcomes. Nat Rev Rheumatol 17, 71–72 (2021) Disclosure of Interests: None declared