Three common TP53 polymorphisms in susceptibility to breast cancer, evidence from meta-analysis

Breast Cancer Res Treat. 2010 Apr;120(3):705-14. doi: 10.1007/s10549-009-0488-9. Epub 2009 Aug 6.

Abstract

The association of polymorphisms of tumor suppressor gene TP53 with breast cancer has widely been reported; however, the results are inconsistent. Here, we selected three commonly studied TP53 polymorphisms: codon 72 Arg > Pro, IVS3 16 bp Del/Ins, and IVS6 + 62A > G to explore their association with breast cancer risk by meta-analysis of published case-control studies. The results showed that codon 72 was not associated with breast cancer risk among 37 combined case-control studies (23,567 cases and 25,995 controls). However, a significant association with decreased risk of breast cancer was found in the Mediterranean studies (PP + PR vs. RR: OR = 0.32, 95% CI = 0.24-0.44, P < 0.001; PP vs. RR: OR = 0.35, 95% CI = 0.21-0.60, P < 0.001). IVS3 16 bp Del/Ins was significantly associated with an increased risk of developing breast cancer in a pooled 8 study dataset (2,470 cases and 2,825 controls; Ins/Ins + Del/Ins vs. Del/Del: OR = 1.15, 95% CI = 1.01-1.30, P = 0.04; Ins/Ins vs. Del/Del: OR = 1.75, 95% CI = 1.20-2.37, P = 0.003). No significant association was observed between IVS6 + 62A > G and breast cancer risk in a total of 10 studies (8,537 cases and 9,586 controls). These results suggest that IVS3 16 bp Del/Ins is likely an important genetic marker contributing to susceptibility of breast cancer, and codon 72 has a potential role in association with breast cancer risk within certain populations or regions.

Publication types

  • Meta-Analysis
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Asia / epidemiology
  • Breast Neoplasms / epidemiology
  • Breast Neoplasms / genetics*
  • Case-Control Studies
  • Codon / genetics
  • Europe / epidemiology
  • Female
  • Genes, p53*
  • Genetic Predisposition to Disease
  • Humans
  • Mediterranean Region / epidemiology
  • Middle Aged
  • Mutagenesis, Insertional
  • Polymorphism, Genetic*
  • Polymorphism, Single Nucleotide
  • Risk
  • Sequence Deletion
  • United States / epidemiology
  • Young Adult

Substances

  • Codon