HLA-G and synovial sarcoma: ESR (26.6 ± 2.50 versus 11.5 ± 1.64 mm/hr, respectively; p < 0.001) and β2 microglobulin (1.57 ± 0.08 versus 1.19 ± 0.08 mg/L, respectively; p = 0.023) were significantly higher in SS patients compared to sicca patients.