SSB and myositis disease: Beside the level of anti-CarPA, the following clinical information of RD patients was collected directly from the medical record (all of patients were hospitalized): rheumatoid factor (RF), anti-cyclic citrullinated peptide antibodies (CCP), antinuclear antibody (ANA), anti-Smith antibodies (SM),anti-double-stranded DNA antibody (dsDNA), antibodies reactive against the ribonucleoprotein antigens Ro/Sjögren’s syndrome A antigen (SSA), antibodies reactive against the ribonucleoprotein antigens La/Sjögren’s syndrome B antigen (SSB), and myositis-specific autoantibodies (MSAs).