Similar molecular process of cancer development was shown in the case of SNP rs1695 (*Ile/Val + Val/Val) and SNP rs1138272 (*Ala/Val + Val/Val) in the GSTP1 gene that are associated with the lack of GST-π activity, and it can result in elevated the risk of prostate cancer development. The gene discussed is GSTP1; the disease is Familial prostate cancer.