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As a member of the p53 gene family, the p73 gene can affect an individual's susceptibility to cancer through a p53-like manner. DNA sequence variation in the p73 gene has been reported to be associated with cancer risk. The present study aimed to identify whether the p73 gene G4C14-to-A4T14 single nucleotide polymorphism (SNP) is associated with risk of cervical cancer in a Chinese population. The p73 G4C14-to-A4T14 polymorphism was genotyped in 175 cervical cancer and 189 healthy control peripheral blood DNA samples using high resolution melting, polymerase chain reaction with confronting two-pair primers and direct DNA sequencing. The results demonstrated that carriers of the AT/AT genotype were associated with a significantly increased risk of cervical cancer (P=0.042; χ 2 =4.122; odds ratio = 2.241; 95% confidence interval = 1.013-4.956) compared with the GC/GC genotype carriers. In addition, there was a significant association between p73 genotypes and tumor size in patients with cervical cancer (P=0.014; χ 2 =8.607). However, no association was identified between p73 genotypes and tumor stage, histological type or lymph node metastasis in patients with cervical cancer. These results suggest that the p73 G4C14-to-A4T14 SNP may function as a marker of genetic susceptibility to cervical cancer in the Chinese population.

oncology letters

Association between the p73 gene G4C14-to-A4T14 single nucleotide polymorphism and risk of cervical cancer by high resolution melting and PCR with confronting two-pair primers in a Chinese population