GSTP1 and prostate cancer: Carriers of the GSTP1*C haplotype, represented by both variant alleles (GSTP1*Val rs1695 + GSTP1*Val rs1138272), had a 5.46-times higher risk of development of prostate cancer compared to individuals with the most frequent haplotype (OR = 5.46, 95%CI = 2.56–11.65, p < 0.001) (Table 3).