TP53 Gene Pro72Arg (rs1042522) Single Nucleotide Polymorphism as Not a Risk Factor for Colorectal Cancer in the Iranian Azari Population

Abstract

Background: The p53 protein participates critically in several cellular functions such as cell growth and DNA repair. Polymorphisms in the TP53 locus have repeatedly been implicated in the pathogenesis of cancers all over the world. Over 200 single nucleotide polymorphisms (SNPs) have been characterized, but one well-known example at at codon 72, Pro72Arg (rs1042522), has the displayed inconsistent results with regard to cancer risk. Herein, we aimed to evaluate whether Pro72Arg (rs1042522) single nucleotide polymorphism (SNP) in TP53 gene might be associated with risk of colorectal cancer in the Iranian Azari population. Methods: Blood samples were taken from 100 healthy controls and 100 colorectal cancer patients with Iranian-Azeri ethnicity. Genotyping was performed with Tetra-ARMS PCR. Results: The alleles of the TP53 gene Pro72Arg SNP did not significantly differ in prevalence between patients and controls (P>0.05). Additionally, genotypes of Pro72Arg SNP were not significantly associated with colorectal cancer risk in the studied population. Conclusions: Pro72Arg SNP of TP53 gene may not be involved in the disease pathogenesis in Iranian Azari patients with colorectal cancer.