Human Genetics

, Volume 116, Issue 3, pp 208–221

Oligogenic combinations associated with breast cancer risk in women under 53 years of age

Authors

    • Program in Arthritis and ImmunologyOklahoma Medical Research Foundation
    • InterGenetics
    • Department of PediatricsUniversity of Oklahoma Health Sciences Center
  • David A. Ralph
    • InterGenetics
  • Dominique P. Lalo
    • InterGenetics
  • Sharmila Manjeshwar
    • Program in Immunobiology and CancerOklahoma Medical Research Foundation
    • InterGenetics
  • Bobby A. Gramling
    • InterGenetics
  • Daniele C. DeFreese
    • InterGenetics
  • Amy D. West
    • InterGenetics
  • Dannielle E. Branam
    • Program in Immunobiology and CancerOklahoma Medical Research Foundation
  • Linda F. Thompson
    • Program in Immunobiology and CancerOklahoma Medical Research Foundation
  • Melissa A. Craft
    • Breast Imaging of Oklahoma
  • Debra S. Mitchell
    • Breast Imaging of Oklahoma
  • Craig D. Shimasaki
    • InterGenetics
  • John J. Mulvihill
    • Department of PediatricsUniversity of Oklahoma Health Sciences Center
  • Eldon R. Jupe
    • Program in Immunobiology and CancerOklahoma Medical Research Foundation
    • InterGenetics
    • Department of SurgeryUniversity of Oklahoma Health Sciences Center
    • Department of PathologyUniversity of Oklahoma Health Sciences Center
Original Investigation

DOI: 10.1007/s00439-004-1206-7

Cite this article as:
Aston, C.E., Ralph, D.A., Lalo, D.P. et al. Hum Genet (2005) 116: 208. doi:10.1007/s00439-004-1206-7

Abstract

Common, but weakly penetrant, functional polymorphisms probably account for most of the genetic risk for breast cancer in the general population. Current polygenic risk models assume that component genes act independently. To test for potential gene–gene interactions, single nucleotide polymorphisms in ten genes with known or predicted roles in breast carcinogenesis were examined in a case-control study of 631 Caucasian women diagnosed with breast cancer under the age of 53 years and 1,504 controls under the age of 53 years. Association of breast cancer risk with individual genes and with two- and three-gene combinations was analyzed. Sixty-nine oligogenotypes from 37 distinct two- and three-gene combinations met stringent criteria for significance. Significant odds ratios (ORs) covered a 12-fold range: 0.5–5.9. Of the observed ORs, 17% differed significantly from the ORs predicted by a model of independent gene action, suggesting epistasis, i.e., that these genes interact to affect breast cancer risk in a manner not predictable from single gene effects. Exploration of the biological basis for these oligogenic interactions might reveal etiologic or therapeutic insights into breast cancer and other cancers.

Copyright information

© Springer-Verlag 2004