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Meat consumption, N-acetyl transferase 1 and 2 polymorphism and risk of breast cancer in Danish postmenopausal women.

Abstract
The aim of this study was to investigate whether polymorphisms in N-acetyl transferase 1 and 2 modify the association between meat consumption and risk of breast cancer. A nested case-control study was conducted among 24 697 postmenopausal women included in the 'Diet, Cancer and Health' cohort study (1993-2000). Three hundred and seventy-eight breast cancer cases were identified and matched to 378 controls. The incidence rate ratio (95% confidence interval) for breast cancer was 1.09 (1.02-1.17) for total meat, 1.15 (1.01-1.31) for red meat and 1.23 (1.04-1.45) for processed meat per 25 g daily increment in intake. Compared with slow acetylators, the IRR (95% confidence interval) among fast N-acetyl transferase 1 acetylators was 1.43 (1.03-1.99) and 1.13 (0.83-1.54) among intermediate/fast N-acetyl transferase 2 acetylators. Interaction analyses revealed that the positive associations between total meat intake and red meat intake and breast cancer risk were confined to intermediate/fast N-acetyl transferase 2 acetylators (Pinteraction = 0.03 and 0.04). Our findings support an association between meat consumption and breast cancer risk and that N-acetyl transferase 2 polymorphism has a modifying effect on the association, indicating that the association is confined to only genetically susceptible women.
AuthorsRikke Egeberg, Anja Olsen, Herman Autrup, Jane Christensen, Connie Stripp, Inge Tetens, Kim Overvad, Anne Tjønneland
JournalEuropean journal of cancer prevention : the official journal of the European Cancer Prevention Organisation (ECP) (Eur J Cancer Prev) Vol. 17 Issue 1 Pg. 39-47 (Feb 2008) ISSN: 0959-8278 [Print] England
PMID18090909 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Isoenzymes
  • Arylamine N-Acetyltransferase
  • N-acetyltransferase 1
  • NAT2 protein, human
Topics
  • Arylamine N-Acetyltransferase (genetics)
  • Breast Neoplasms (epidemiology, genetics)
  • Case-Control Studies
  • Cohort Studies
  • Denmark
  • Female
  • Genotype
  • Humans
  • Isoenzymes (genetics)
  • Meat
  • Middle Aged
  • Polymorphism, Genetic (genetics)
  • Postmenopause
  • Risk Factors

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