RT Journal Article T1 Diagnostic delay of associated interstitial lung disease increases mortality in rheumatoid arthritis. A1 Cano-Jiménez, Esteban A1 Vázquez Rodríguez, Tomás A1 Martín-Robles, Irene A1 Castillo Villegas, Diego A1 Juan García, Javier A1 Bollo de Miguel, Elena A1 Robles-Pérez, Alejandro A1 Ferrer Galván, Marta A1 Mouronte Roibas, Cecilia A1 Herrera Lara, Susana A1 Bermudo, Guadalupe A1 García Moyano, Marta A1 Rodríguez Portal, Jose Antonio A1 Sellarés Torres, Jacobo A1 Narváez, Javier A1 Molina-Molina, María AB Rheumatoid arthritis (RA) is a systemic autoimmune disease whose main extra-articular organ affected is the lung, sometimes in the form of diffuse interstitial lung disease (ILD) and conditions the prognosis. A multicenter, observational, descriptive and cross-sectional study of consecutive patients diagnosed with RA-ILD. Demographic, analytical, respiratory functional and evolution characteristics were analyzed to evaluate the predictors of progression and mortality. 106 patients were included. The multivariate analysis showed that the diagnostic delay was an independent predictor of mortality (HR 1.11, CI 1.01-1.23, p = 0.035). Also, age (HR 1.33, 95% CI 1.09-1.62, p = 0.0045), DLCO (%) (HR 0.85, 95% CI 0.73-0.98, p = 0.0246), and final SatO2 (%) in the 6MWT (HR 0.62, 95% CI 0.39-0.99, p = 0.0465) were independent predictor variables of mortality, as well as GAP index (HR 4.65, 95% CI 1.59-13.54, p = 0.0051) and CPI index (HR 1.12, 95% CI 1.03-1.22, p = 0.0092). The withdrawal of MTX or LFN after ILD diagnosis was associated with disease progression in the COX analysis (HR 2.18, 95% CI 1.14-4.18, p = 0.019). This is the first study that highlights the diagnostic delay in RA-ILD is associated with an increased mortality just like happens in IPF. YR 2021 FD 2021-04-28 LK http://hdl.handle.net/10668/17650 UL http://hdl.handle.net/10668/17650 LA en DS RISalud RD Apr 12, 2025