p53 gene codon 72 polymorphism and susceptibility to keloid / 中华整形外科杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigate the relationship between p53 codon 72 polymorphism and susceptibility to keloid in a southern Chinese population.</p><p><b>METHODS</b>The p53 genotypes were determined by polymerase chain reaction-reverse dot blot (PCR-RDB) and DNA direct sequencing in 45 patients with keloid and 60 unrelated healthy controls.</p><p><b>RESULTS</b>The frequency of the p53 Pro allele among keloid patients was significantly higher than that among healthy controls (chi2 = 4.485, P = 0.034). The Pro/Arg and Arg/Arg genotype distribution among keloid patients was not significantly different from that among healthy controls (chi2 = 0.949, 1.346; P = 0.330, 0.246, respectively). However, the Pro/Pro genotype frequency among keloid patients was significantly higher than that among healthy controls (chi2 = 4.375, P = 0.036). The p53 Pro/Pro genotype significantly increased the risk for developing keloid, compared to the combination of Pro/Arg and Arg/Arg genotypes,with the odds ratio (OR) of 2.400 (95%CI 1.048-5.498).</p><p><b>CONCLUSIONS</b>Determination of the p53 codon 72 genotype may be used as a stratification marker to predicate high-risk individuals for keloid.</p>