Evaluation of a candidate breast cancer associated SNP in ERCC4 as a risk modifier in BRCA1 and BRCA2 mutation carriers. Results from the Consortium of Investigators of Modifiers of BRCA1/BRCA2 (CIMBA)

Osorio, A., Milne, R. L., Pita, G., Peterlongo, P., Heikkinen, T., Simard, J., Chenevix-Trench, G., Spurdle, A. B., Beesley, J., Chen, X., Healey, S. and et al., , kConFab, OCGN Investigators, SWE-BRCA, HEBON, EMBRACE, GEMO and Breast Cancer Family Registry (2009) Evaluation of a candidate breast cancer associated SNP in ERCC4 as a risk modifier in BRCA1 and BRCA2 mutation carriers. Results from the Consortium of Investigators of Modifiers of BRCA1/BRCA2 (CIMBA). British Journal of Cancer, 101, 2048-2054. (doi:10.1038/sj.bjc.6605416).

Abstract

Background:
In this study we aimed to evaluate the role of a SNP in intron 1 of the ERCC4 gene (rs744154), previously reported to be associated with a reduced risk of breast cancer in the general population, as a breast cancer risk modifier in BRCA1 and BRCA2 mutation carriers.

Methods:
We have genotyped rs744154 in 9408 BRCA1 and 5632 BRCA2 mutation carriers from the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA) and assessed its association with breast cancer risk using a retrospective weighted cohort approach.

Results:
We found no evidence of association with breast cancer risk for BRCA1 (per-allele HR: 0.98, 95% CI: 0.93–1.04, P=0.5) or BRCA2 (per-allele HR: 0.97, 95% CI: 0.89–1.06, P=0.5) mutation carriers.

Conclusion:
This SNP is not a significant modifier of breast cancer risk for mutation carriers, though weak associations cannot be ruled out.

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Contributors

Author: Anneke Lucassen

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