Prospective KORAIL study of 138 RA pts w/ ILD on chest CT -60% had UIP ILD. After F/U of 2.9 yrs, 35% had RA-ILD progression. Baseline predictors of progression = UIP, ILD >10 %, DLCO %pred, CCP+, KL-6 levels, RA Dz activity. Useful to ID high-risk RA-ILD pts.