RT Journal Article T1 Clinical Spectrum Time Course in Anti Jo-1 Positive Antisynthetase Syndrome: Results From an International Retrospective Multicenter Study A1 Cavagna, Lorenzo A1 Nuño, Laura A1 Scirè, Carlo Alberto A1 Govoni, Marcello A1 Lopez Longo, Francisco Javier A1 Franceschini, Franco A1 Neri, Rossella A1 Castañeda, Santos A1 Sifuentes Giraldo, Walter Alberto A1 Caporali, Roberto A1 Iannone, Florenzo A1 Fusaro, Enrico A1 Paolazzi, Giuseppe A1 Pellerito, Raffaele A1 Schwarting, Andreas A1 Saketkoo, Lesley Ann A1 Ortego-Centeno, Norberto A1 Quartuccio, Luca A1 Bartoloni, Elena A1 Specker, Christof A1 Pina Murcia, Trinitario A1 La Corte, Renato A1 Furini, Federica A1 Foschi, Valentina A1 Bachiller Corral, Javier A1 Airò, Paolo A1 Cavazzana, Ilaria A1 Martínez-Barrio, Julia A1 Hinojosa, Michelle A1 Giannini, Margherita A1 Barsotti, Simone A1 Menke, Julia A1 Triantafyllias, Kostantinos A1 Vitetta, Rosetta A1 Russo, Alessandra A1 Bajocchi, Gianluigi A1 Bravi, Elena A1 Barausse, Giovanni A1 Bortolotti, Roberto A1 Selmi, Carlo A1 Parisi, Simone A1 Montecucco, Carlomaurizio A1 González-Gay, Miguel Angel K1 Anticuerpos antinucleares K1 Artritis K1 Humanos K1 Miositis K1 Estudios retrospectivos K1 Femenino K1 Masculino AB Anti Jo-1 antibodies are the main markers of the antisynthetase syndrome (ASSD), an autoimmune disease clinically characterized by the occurrence of arthritis, myositis, and interstitial lung disease (ILD). These manifestations usually co-occur (for practical purpose complete forms) in the same patient, but cases with only 1 or 2 of these findings (for practical purpose incomplete forms) have been described. In incomplete forms, the ex novo occurrence of further manifestations is possible, although with frequencies and timing not still defined. The aim of this international, multicenter, retrospective study was to characterize the clinical time course of anti Jo-1 positive ASSD in a large cohort of patients. Included patients should be anti Jo-1 positive and with at least 1 feature between arthritis, myositis, and ILD. We evaluated the differences between complete and incomplete forms, timing of clinical picture appearance and analyzed factors predicting the appearance of further manifestations in incomplete ASSD. Finally, we collected 225 patients (58 males and 167 females) with a median follow-up of 80 months. At the onset, complete ASSD were 44 and incomplete 181. Patients with incomplete ASSD had frequently only 1 of the classic triad findings (110 cases), in particular, isolated arthritis in 54 cases, isolated myositis in 28 cases, and isolated ILD in 28 cases. At the end of follow-up, complete ASSD were 113, incomplete 112. Only 5 patients had an isolated arthritis, only 5 an isolated myositis, and 15 an isolated ILD. During the follow-up, 108 patients with incomplete forms developed further manifestations. Single main feature onset was the main risk factor for the ex novo appearance of further manifestation. ILD was the prevalent ex novo manifestation (74 cases). In conclusion, ASSD is a condition that should be carefully considered in all patients presenting with arthritis, myositis, and ILD, even when isolated. The ex novo appearance of further manifestations in patients with incomplete forms is common, thus indicating the need for an adequate clinical and instrumental follow-up. Furthermore, the study clearly suggested that in ASSD multidisciplinary approach involving Rheumatology, Neurology, Pneumology, and Internal Medicine specialists is mandatory. PB Lippincott, Williams & Wilkins SN 0025-7974 YR 2015 FD 2015-08 LK http://hdl.handle.net/10668/2634 UL http://hdl.handle.net/10668/2634 LA en NO Cavagna L, Nuño L, Scirè CA, Govoni M, Longo FJ, Franceschini L, et al. Clinical Spectrum Time Course in Anti Jo-1 Positive Antisynthetase Syndrome: Results From an International Retrospective Multicenter Study. 2015 Medicine (Baltimore). Aug;94(32):e1144. DS RISalud RD Apr 6, 2025