In 551 juvenile myositis pts, 36% had myositis assoc Abs (MAA); 13% had >1 MAA. MAA+ pts had more overlap dz (18 vs 6%, p<.001) & assoc w/ Raynauds (OR 2.44), ILD (OR 3.43), chronic Dz (OR 1.72), mortality (OR 3.76). # MAAs was assoc w/ mortality (OR 1.83) https://t.co/BXhasmel3Z