STOP-RA results published in A&R. 144 at risk, CCP+ pts were enrolled to received HCQ vs PBO for 12 mos, w/ 24 mos F/U. Progression to RA seen in 30.4% on HCQ vs 32.9% on PBO (NS; P=0.52). Also IA, Jt Sxs, severity & adverse events were similar between groups.