PT - JOURNAL ARTICLE AU - Francesco Ursini AU - Piero Ruscitti AU - Olga Addimanda AU - Rosario Foti AU - Vincenzo Raimondo AU - Giuseppe Murdaca AU - Virginia Caira AU - Erika Pigatto AU - Giovanna Cuomo AU - Alberto Lo Gullo AU - Ilaria Cavazzana AU - Corrado Campochiaro AU - Caterina Naclerio AU - Rossella De Angelis AU - Jacopo Ciaffi AU - Luana Mancarella AU - Veronica Brusi AU - Elena Marchetti AU - Francesca Motta AU - Marcella Visentini AU - Sebastiano Lorusso AU - Maria De Santis AU - Giacomo De Luca AU - Laura Massaro AU - Domenico Olivo AU - Roberta Pellegrini AU - Francesca Francioso AU - Jessica Luppino AU - Ilenia Di Cola AU - Roberta Foti AU - Giuseppe Varcasia AU - Francesco Caso AU - Massimo Reta AU - Lorenzo Dagna AU - Carlo Selmi AU - Annamaria Iagnocco AU - Roberto Giacomelli AU - Florenzo Iannone AU - Clodoveo Ferri TI - Inflammatory rheumatic diseases with onset after SARS-CoV-2 infection or COVID-19 vaccination: a report of 267 cases from the COVID-19 and ASD group AID - 10.1136/rmdopen-2023-003022 DP - 2023 Jun 01 TA - RMD Open PG - e003022 VI - 9 IP - 2 4099 - http://rmdopen.bmj.com/content/9/2/e003022.short 4100 - http://rmdopen.bmj.com/content/9/2/e003022.full SO - RMD Open2023 Jun 01; 9 AB - Objectives To better define the spectrum of new-onset post-COVID-19 and post-COVID-19 vaccine inflammatory rheumatic diseases (IRD) from a large multicentric observational study.Methods Consecutive cases of IRD encountered during a 12-month period and satisfying one of the following inclusion criteria: (a) onset of the rheumatic manifestations within 4 weeks from SARS-CoV-2 infection or (b) onset of the rheumatic manifestations within 4 weeks from the administration of one of the COVID-19 vaccines ws recruited.Results The final analysis cohort comprised 267 patients, of which 122 (45.2%) in the post-COVID-19 and 145 (54.8%) in the postvaccine cohort. Distribution of IRD categories differed between the two cohorts: the post-COVID-19 cohort had a higher percentage of patients classified as having inflammatory joint diseases (IJD, 52.5% vs 37.2%, p=0.013) while the post-vaccine cohort had a higher prevalence of patients classified as polymyalgia rheumatica (PMR, 33.1% vs 21.3%, p=0.032). No differences were detected in the percentage of patients diagnosed with connective tissue diseases (CTD 19.7% vs 20.7%, p=0.837) or vasculitis (6.6% vs 9.0%, p=0.467). Despite the short follow-up period, IJD and PMR patients’ response to first-line therapy was favourable, with both groups achieving a drop in baseline disease activity scores of ~30% and ~70% respectively.Conclusion Our article reports the largest cohort published to date of new-onset IRD following SARS-CoV-2 infection or COVID-19 vaccines. Although causality cannot be ascertained, the spectrum of possible clinical manifestations is broad and includes IJD, PMR, CTD and vasculitis.Data are available upon reasonable request.