Breast Cancer Research and Treatment

, Volume 136, Issue 2, pp 593–602

Associations between TCF7L2 polymorphisms and risk of breast cancer among Hispanic and non-Hispanic White women: the Breast Cancer Health Disparities Study

  • Avonne E. Connor
  • Richard N. Baumgartner
  • Kathy B. Baumgartner
  • Richard A. Kerber
  • Christina Pinkston
  • Esther M. John
  • Gabriela Torres-Mejia
  • Lisa Hines
  • Anna Giuliano
  • Roger K. Wolff
  • Martha L. Slattery
Epidemiology

DOI: 10.1007/s10549-012-2299-7

Cite this article as:
Connor, A.E., Baumgartner, R.N., Baumgartner, K.B. et al. Breast Cancer Res Treat (2012) 136: 593. doi:10.1007/s10549-012-2299-7

Abstract

The transcription factor 7-like 2 (TCF7L2) gene is part of the Wnt/β-catenin signaling pathway and plays a critical role in cell development and growth regulation. TCF7L2 variants rs12255372 and rs7903146 have been associated with risk of Type 2 diabetes. Few epidemiological studies have examined the association between TCF7L2 and breast cancer risk. We investigated the associations between 25 TCF7L2 single nucleotide polymorphisms (SNPs) and breast cancer in Hispanic and non-Hispanic white (NHW) women from the 4-Corner’s Breast Cancer Study, the San Francisco Bay Area Breast Cancer Study, and the Mexico Breast Cancer Study. A total of 4,703 Hispanic (2,093 cases, 2,610 controls) and 3,031 NHW (1,431 cases, 1,600 controls) women were included. Odds ratios (OR) and 95 % confidence intervals (CI) were calculated using logistic regression to estimate the association between the TCF7L2 SNPs and breast cancer risk. We also examined effect modification by self-reported ethnicity, genetic admixture, and diabetes history. After adjusting for multiple comparisons, four TCF7L2 SNPs were significantly associated with breast cancer overall: rs7903146 (ORTT 1.24; 95 % CI 1.03–1.49), rs3750805 (ORAT/TT 1.15; 95 % CI 1.03–1.28), rs7900150 (ORAA 1.23; 95 % 1.07–1.42), and rs1225404 (ORCC 0.82; 95 % 0.70–0.94). Among women with a history of diabetes, the TT genotype of rs3750804 increased breast cancer risk (OR, 2.46; 95 % CI 1.28–4.73). However, there was no association among women without a diabetes history (OR, 1.06; 95 % CI 0.85–1.32). We did not find significant interactions by ethnicity or by genetic admixture. Findings support an association between TCF7L2 and breast cancer and history of diabetes modifies this association for specific variants.

Keywords

Breast cancerHispanicTranscription factor 7-like 2PolymorphismsType 2 diabetes

Supplementary material

10549_2012_2299_MOESM1_ESM.doc (300 kb)
Supplementary material 1 (DOC 299 kb)
10549_2012_2299_MOESM2_ESM.xlsx (16 kb)
Supplementary material 2 (XLSX 16 kb)

Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Avonne E. Connor
    • 1
  • Richard N. Baumgartner
    • 1
  • Kathy B. Baumgartner
    • 1
  • Richard A. Kerber
    • 1
  • Christina Pinkston
    • 1
  • Esther M. John
    • 2
    • 3
  • Gabriela Torres-Mejia
    • 4
  • Lisa Hines
    • 5
  • Anna Giuliano
    • 6
  • Roger K. Wolff
    • 7
  • Martha L. Slattery
    • 7
  1. 1.Department of Epidemiology & Population Health, School of Public Health & Information SciencesUniversity of LouisvilleLouisville USA
  2. 2.Cancer Prevention Institute of CaliforniaFremontUSA
  3. 3.Division of Epidemiology, Department of Health Research and Policy, Stanford Cancer InstituteStanford University School of MedicineStanfordUSA
  4. 4.Centro de Investigacion en Salud PoblacionalInstituto Nacional de Salud PublicaCuernavacoMexico
  5. 5.Department of BiologyUniversity of Colorado Colorado SpringsColorado SpringsUSA
  6. 6.H.Lee Moffit Cancer Center & Research InstituteTampaUSA
  7. 7.Department of Internal MedicineUniversity of UtahSalt Lake CityUSA