The multivariate Cox regression analysis did not show statistically significant association between either GSTO1 (rs1495) or GSTO2 (rs156697 and rs2297235) genotypes and overall mortality, adjusted by recognized prognostic factors, Fuhrman nuclear grade and pT stage, among ccRCC patients (Table 2). The gene discussed is GSTO1; the disease is nonpapillary renal cell carcinoma.