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OBJECTIVESTo describe persistent symptoms and consequences in Rheumatic and Musculoskeletal diseases (RMD) discharged from the hospital after Covid-19; to assess the roll of autoimmune rheumatic diseases (ARD) compared to and non-autoimmune rheumatic and musculoskeletal diseases (NARD) on persistent symptoms and consequences.METHODSWe performed a cross-sectional observational study. RMD attended at a rheumatology outpatient clinic in Madrid with Covid-19 that required hospital admission were included. The main outcomes were persistence of symptoms and health consequences related to Covid19 after discharge. Independent variable was RMD group (ARD and NARD) and covariates were sociodemographic, clinical, and treatments. We ran a multivariable logistic regression model to assess the risk by RMD group on main outcomes.RESULTSWe included 105 patients and 51.5% had ARD. 68.57% reported at least one persistent symptom. The most frequent were dyspnea, fatigue, and chest pain. 31 patients had consequences. Lung damage was found in 11.4% of the patients, 18% had blood test abnormalities (10% lymphopenia), two died, one developed central retinal vein occlusion and one patient developed optic neuritis. 11 patients required readmission due to Covid-19 problems (16.7% ARD vs 3.9% NARD; p=0.053). No statistically significant differences by RMD groups were found in the final models.CONCLUSIONMany RMD patients have persistent symptoms, similar to other populations. This study also highlights that lung damage is the most frequent consequence. ARD compared to NARD does not seem to differ in terms of persistent symptoms or consequences, although ARD might have a greater number of readmissions due to Covid-19.

Background:Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), triggers the innate immune system, leading in severe cases, an excessive immune response, which can lead to high levels of pro-inflammatory cytokines promoting a “cytokine storm”.To modulate this exaggerated inflammatory response, several clinical trials with already approved and well-known therapeutic agents that inhibit the inflammatory response, are being carried out. However, none of these drugs seems to achieve the desired results when treating COVID19.Colchicine, a drug often used in the management of patients with Rheumatic and Musculoskeletal diseases (RMDs), is one of the several drugs that are being currently tested for efficacy in COVID19 due to its anti-inflammatory effects.Objectives:To analyze association between colchicine prescription and COVID19-related hospital admissions in patients with Rheumatic and Musculoskeletal diseases (RMDs).Methods:Patients attending a rheumatology outpatient clinic from a tertiary care center in Madrid, Spain, from 1st September 2019 to 29th February 2020 were included.Patients were assigned as exposed or unexposed based on whether they were prescribed with colchicine in their last visit to the clinic during the 6 months before the start of the observation period. Treatment changes during the observation period were also considered. The primary outcome was COVID19-related hospital admissions occurring between March 1st and May 20th, 2020. Secondary outcome included COVID19-related mortality. Several weighting techniques for data balancing, based and non-based on the propensity score, followed by Cox regressions were performed to estimate the association of colchicine prescription on both outcomes.Results:9,379 patients entered in the study, with 406 and 9,002 exposed and unexposed follow-up periods, respectively. Generalized Boosted Models (GBM) and Empirical Balancing Calibration Weighting (EBCW) methods showed the best balance for COVID19-related hospital admissions. Colchicine prescription did not show a statistically significant association after covariable balancing (p-value = 0.195 and 0.059 for GBM and EBCW, respectively). Regarding mortality, the low number of events prevented a success variable balancing and analysis.Conclusion:Colchicine prescription does not play a significant protective or risk role in RMD patients regarding COVID19-related hospital admissions. Our observations could support the maintenance of colchicine prescription in those patients already being treated, as it is not associated with a worse prognosis.References:[1]Fernandez-Gutierrez B. COVID-19 with Pulmonary Involvement. An Autoimmune Disease of Known Cause. Reumatol Clin 2020; 16: 253–254.[2]Coperchini F, Chiovato L, Croce L, et al. The cytokine storm in COVID-19: An overview of the involvement of the chemokine/chemokine-receptor system. Cytokine Growth Factor Rev 2020; 53: 25–32.[3]Shaffer L. 15 drugs being tested to treat COVID-19 and how they would work. Nat Med. Epub ahead of print 15 May 2020. DOI: 10.1038/d41591-020-00019-9.[4]Fernandez-Gutierrez B, Leon L, Madrid A, et al. Hospital admissions in inflammatory rheumatic diseases during the COVID-19 pandemic: incidence and role of disease modifying agents. medRxiv 2020; 2020.05.21.20108696.[5]Freites Nuñez DD, Leon L, Mucientes A, et al. Risk factors for hospital admissions related to COVID-19 in patients with autoimmune inflammatory rheumatic diseases. Ann Rheum Dis 2020; 1–7.Disclosure of Interests:None declared

Background:The COVID-19 pandemic continues worldwide and has had a strong impact on public health, quality of life and economy of the general population. To date, the number of infections and deaths are still increasing. From the beginning of the pandemic, efforts were intensified to identify risk factors for development of the severe form of COVID-19. In this sense underlying medical comorbidities have been shown to have a worse prognosis in these patients.Objectives:In patients with rheumatic and musculoskeletal diseases (RMDs) and infected with Covid – 19, we aim to investigate the role of systemic autoimmune conditions compared to other type of RMDs in severity of COVID-19 in terms of hospital admissions.Methods:An observational longitudinal study was conducted during the epidemic peak in Madrid (1stMar to 20thMay2020). All patients attended at the rheumatology outpatient clinic of a tertiary hospital with a diagnosis of RMDs and Covid-19 infection were included (according to a medical diagnosis or confirmed with a positive SARS-CoV-2 PCR diagnostic test). All patients were included since the time of COVID-19 diagnosis. Main variable: hospital admission related to Covid -19 infection. Independent variable: type of RMD including: autoimmune (systemic autoimmune conditions and inflammatory joint disease (IJD)) and nonautoimmune (mechanical diseases, and inflammatory diseases (microcrystalline arthritis and tendonitis)). Covariates: sociodemographic, clinical and therapy used. Statistical analysis: description of the sociodemographic, clinical and treatment characteristics of the patients. A multivariate logistic regression adjusted by age, sex and comorbidities was used to evaluate the risk of the different types of RMDs in hospital admissions related to Covid-19. The results were expressed as OR with its corresponding confidence interval (95% CI).Results:406 patients were included with RMDs and Covid- 19 infection. 69.21% were women with a mean age at diagnosis of 60 ± 15.26 years. The evolution time from the diagnosis of RMD was 8 ± 8.38 years. 26% had comorbidity at baseline. 25% were chronically on corticoids prior to the infection. Of the 406 patients, 244 (60.09%) had non-autoimmune RMD (157 mechanic, 87 inflammatory) and 162 (39.9%) (106 (65.43%) IJD, 56 (34.56%) systemic autoimmune condition) had autoimmune RMD. 36% of all patients were admitted (31% from not autoimmune RMDs and 43% from autoimmune RMD (p = 0,013). The risk of hospital admission in autoimmune RMD compared to non-autoimmune RMD was higher (OR: 1.68; [1.11-2.54], p=0.013), being the risk of systemic autoimmune condition compared to both IJD and non-autoimmune RMD higher (OR IJD: 0.41 [0.21-0.51], p=0.01; OR non-autoimmune: 0.33; [0.18-0.61]; p=0.000). After adjusting by confounders, autoimmune RMD had higher risk of hospital admissions compared to the rest (OR: 1.75; [1.04-2.95]; p=0.03), and specifically systemic autoimmune condition had higher risk compared to IJD (OR of IJD 0.33; [0.14-.076]; p=0.009) and compared to non–autoimmune (OR non autoimmune 0.28; [0.13-0.59], p=0.001). Advanced age (OR: 1.10; [1.07-1.12], pConclusion:One third of the RMD patients infected with COVID-19 required hospital admission. This study shows that patients with autoimmune and specifically with systemic autoimmune conditions have a higher risk of hospitalization related to COVID-19. We also show that advanced age, male sex and a higher number of comorbidities can contribute to worsen the prognosis of the COVID-19 disease.References:[1]Jorge A, et al. Temporal trends in severe COVID-19 outcomes in patients with rheumatic disease: a cohort study. Lancet Rheumatol. Ahead of print 2021.[2]Hyrich KL, Machado PM. Rheumatic disease and COVID-19: epidemiology and outcomes. Nature Reviews Rheumatology 2020; 17: 71–72.[3]Bonfá E, et al. How COVID-19 is changing rheumatology clinical practice. Nat Rev Rheumatol 2021; 17: 11–15.Disclosure of Interests:None declared

Background:Spain has been one of the countries most impacted by the COVID-19 pandemic. Among Spanish patients, 56,799 deaths have been reported. Although we have been in this situation of pandemic for a year, studies that show risk mortality rates in patients with rheumatic diseases continue to be scarce.Objectives:In patients with rheumatic and musculoskeletal diseases (RMDs) and infected with Covid – 19, a) we want to assess the mortality rate (MR) related to COVID-19; and b) to analyze the role of RMDs in mortality risk.Methods:An observational longitudinal study was conducted during the epidemic peak in Madrid (1stMar to 20thMay2020). All patients attended at the rheumatology outpatient clinic of a tertiary hospital with a diagnosis of RMDs and SARS - CoV 2 infection were included (according to a medical diagnosis or confirmed with a positive SARS-CoV-2 PCR diagnostic test). All patients were included since the time of COVID-19 diagnosis. Main outcome: death related to COVID-19 infection. Independent variable: type of RMDs including: autoimmune (systemic autoimmune conditions (SAC) and inflammatory joint disease (IJD)) and non–autoimmune (mechanical diseases and inflammatory diseases (microcrystalline arthritis and tendonitis)). Covariates: sociodemographic, comorbidities, chronic use of corticoids prior to COVID-19 infection. Survival techniques were used to estimate the MR related to COVID-19, given per 1,000 persons-month with a 95% confidence interval [CI]. The time of observation comprised the elapsed time between the date of COVID-19 diagnosis of infection until the date of patient’s death, or end of study. Cox multiple regression analysis was run to examine the effect of autoimmune RMDs compared to non-autoimmune RMDs on mortality risk adjusted by sex, age and comorbidities. Results were expressed by Hazard Ratio (HR) and [CI].Results:406 patients were included with RMD and Covid – 19 infection with a total follow-up 642.5 patients-month. 69.21% were women with a mean age at diagnosis of 60 ± 15.26 years. The evolution time from the diagnosis of rheumatic disease was 8 ± 8.38 years. 26% had comorbidity at baseline. 25% were chronically on corticoids prior to the infection. Of the 406 patients, 244 (60.09%) had non-autoimmune RMD (157 mechanic, 87 inflammatory) and 162 (39.9%) (106 (65.43%) IJD, 56 (34.56%) systemic condition) had autoimmune RMD. Of the 406 patients, 45 (11%) died during the follow-up, being 12± 14 days the mean time from infection to death (P50: 6[2-12] and a maximum of 60 days). MR was estimated in 70.03 [52.28-93.79] per 1,000 persons-month. MR was higher for men (MR 105[68-163]) than for women (MR 55 [37.2-81.6]) and in older people (MR 75Years: 486 [354-1668]). The HR of mortality in autoimmune RMDs compared to non-autoimmune RMDs did not achieved statistical significance (HR: 1.39 [0.77-2.5], p=0.27). After adjusting for confounders, we did not find higher risk of mortality among the different types of RMDs (HR autoimmune vs non-autoinmunes: HR: 1.12 [0.6-2.02], p=0.7; HR IJD vs SAC; 1.5 [0.6-3.6], p=0.34; HR non-autoimmune vs SAC: 1.1 [0.5-2.5], P=0.7). Age (HR: 1.12; [1.10-1.15], pConclusion:In patients with RMD and COVID-19 infection, we found a mortality rate of 7 per 100 persons-month. This study shows that the mortality risk related to COVID-19 is similar between autoimmune and non-autoimmune diseases after adjusting by confounders. We also found that age and comorbidities are risk factors for mortality related to COVID-19 infection.References:[1]Jorge A, et al. Temporal trends in severe COVID-19 outcomes in patients with rheumatic disease: a cohort study. Lancet Rheumatol. Epub ahead of print 2021..[2]Bonfá E, et al. How COVID-19 is changing rheumatology clinical practice. Nat Rev Rheumatol 2021; 17: 11–15.[3]Hyrich KL, Machado PM. Rheumatic disease and COVID-19: epidemiology and outcomes. Nature Reviews Rheumatology 2020; 17: 71–72.Disclosure of Interests:None declared