Methyl group metabolism gene polymorphisms as modifier of breast cancer risk in Italian BRCA1/2 carriers

C. Pepe, L. Guidugli, E. Sensi, P. Aretini, E. D'Andrea, M. Montagna, S. Manoukian, L. Ottini, P. Radice, A. Viel, G. Bevilacqua, M. A. Caligo

Research output: Contribution to journalArticle

Abstract

BRCA1 and 2 are major cancer susceptibility genes but their penetrance is highly variable. The folate metabolism plays an important role in DNA methylation and its alterated metabolism is associated with cancer risk. The role of allele variants 677T and 1298C (MTHFR gene) and 2756G (MS gene) has been investigated as potentially modifying factors of BRCA gene penetrance, evaluated as age at first diagnosis of cancer, in 484 BRCA1/BRCA2 carriers and in 108 sporadic breast cancer cases as a control group. The genotype analysis has been performed by means of PCR/RFLP's. The analysis of association between a particular genotype and disease risk was performed using Cox Regression with time to breast or ovarian cancer onset as the end-point. The presence of 677T allele confers an increased risk of breast cancer in BRCA1 carriers (P = 0.007) and the presence of 1298C allele confers an increased risk of breast cancer in sporadic cases (P = 0.015).

Original languageEnglish
Pages (from-to)29-36
Number of pages8
JournalBreast Cancer Research and Treatment
Volume103
Issue number1
DOIs
Publication statusPublished - Jun 2007

Keywords

  • BRCA1/2
  • Cancer risk
  • DNA methylation
  • Gene penetrance modifiers
  • Hereditary breast and/or ovarian cancer

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

Fingerprint Dive into the research topics of 'Methyl group metabolism gene polymorphisms as modifier of breast cancer risk in Italian BRCA1/2 carriers'. Together they form a unique fingerprint.

  • Cite this