Significantly higher gene expression (p ≤ 0.05) was observed in PBMCs from SS patients compared to ND for ANK1, CXCL13, KCNK1, GATA6, HDAC9, PLS3, and SGCE, in resting PBMCs and following activation. The gene discussed is KCNK1; the disease is synovial sarcoma.