Clinical Features and Immunogenetic Risk Factors Associated With Additional Autoantibodies in Anti‐Transcriptional Intermediary Factor 1γ Juvenile‐Onset Dermatomyositis

Novel autoantibody specificities including anti-CCAR1 were recently discovered in adult patients with anti-transcriptional intermediary factor (TIF1)-positive dermatomyositis (DM) and were associated with attenuated cancer emergence. The aims of the present study were to examine whether these autoantibodies occur in patients with juvenile-onset DM (JDM) and to determine their associated features.