The TP53-R72P (rs1042522) polymorphism and risk factors in breast cancer patients

摘要

The authors aimed to assess the incidence of TP53-R72P polymorphism correlating with risk factors and clinical-pathological features in breast cancer (BC). Genotypic distribution was higher for Arg/Pro (43.52%) comparing with Arg/Arg (38.36%) and Pro/Pro (18.12%), and the allele frequency was significantly higher for Arg (0.62%) in BC patients. Risk-factors such as age, menarche, pregnancy, hormonal therapy, ethnicity, and origin region showed relevance in case-control comparisons. Genotype distribution showed a high frequency of ER-positive and PR-positive in BC. HER-2 negative (87.8%) was significantly more frequently than positive, and the genotype classification was 40.5% Arg/Arg and 46.4% Arg/Pro. Almost all patients presented invasive ductal carcinoma (IDC) and underwent surgical treatment without neoadjuvant chemotherapy. TP53 - R72P polymorphism seems to be associated with some risk factors related to reproductive life, hormonal treatments, ethnicity, and lifestyle. Genetic variation between Arg and Pro alleles seems not to be directly correlated with BC development.