GSTP1 and cancer: Although meta-analysis did not find association between GSTP1 rs1695 polymorphism and RCC development [31, 52], the results of our previous studies on RCC patients indeed demonstrated a significantly increased risk for cancer development in patients carrying the GSTP1-variant (Ile/Val+Val/Val) genotype [16], which was in line with the results obtained on the subpopulation of ccRCC patients [53].