Anti-Ro52 antibodies in idiopathic inflammatory myopathies: clinical significance across myositis-specific antibody-defined subgroups.
OBJECTIVE To investigate the frequency, clinical characteristics, and prognostic value of anti-Ro52 antibodies in patients with idiopathic inflammatory myopathies (IIMs), especially in IIM subgroups with distinct myositis-specific antibodies (MSAs). METHODS This cohort included 2,126 patients with IIMs treated at the...