The change of Th17/Treg balance was correlated to the upregulation of IL-17A (HC 13.09±1.67 pg/mL vs SS 28.72±3.61 pg/mL) and downregulation of TGF-β in serum of SS patients (HC 11272±2162 pg/mL vs SS 5842±1162 pg/mL) (Fig. 1, I, J). This evidence concerns the gene TGFB1 and synovial sarcoma.