Study of 154 anti-Ku Ab+ pts (51 IMMM, 46 SLE, 30 Sjögrens, 27 Sc) = 60 (39%) had ILD - 75% progressed; more rapidly in males. BUT Ku+ is rare <4%, not specific, without clear clinical implications. Ku is a myositis-assoc Ab (like Ro52/Ro60, U1-RNP, PM/Scl) https://t.co/s1VFhaOYgn