PO:06:078 | Is difficult-to-treat rheumatoid arthritis less severe in patients with autoantibody-negative disease? retrospective analysis from a monocentric cohort.: Bernardo D’Onofrio1, Maria Chiara Ditto1, Francesco Ghellere1, Giacomo Tanti1, Salvatore Panaro1, Enrico Fusaro1, Simone Parisi1. | 1AOU Città della Salute e della Scienza, Torino, Italy. Reumatismo [Internet]. 2025 Nov. 25 [cited 2026 Apr. 17];77(s1). Available from: https://www.reumatismo.org/reuma/article/view/2013