The AXIN2 SNP, Pro50Ser (rs2240308, c.148G > A), results in an amino acid change from a proline to a serine, which is located at exon 1 148 of the AXIN2 gene, has been widely observed in lung cancer, ovarian cancer and prostate cancer [11–13]. The gene discussed is AXIN2; the disease is ovarian carcinoma.