Journal
JOURNAL OF THE NATIONAL CANCER INSTITUTE
Volume 100, Issue 6, Pages 437-442Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/jnci/djn037
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Funding
- Cancer Research UK [10118] Funding Source: researchfish
- British Heart Foundation Funding Source: Medline
- Cancer Research UK [10118] Funding Source: Medline
- Medical Research Council Funding Source: Medline
- NCI NIH HHS [CA-95-003] Funding Source: Medline
- Breast Cancer Now [BREAST CANCER NOW RESEARCH CENTRE] Funding Source: Medline
- Department of Health Funding Source: Medline
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Data from several studies have suggested that polymorphisms in A-kinase anchoring proteins (AKAPs), which are key components of signal transduction, contribute to carcinogenesis. To evaluate the impact of AKAP variants on breast cancer risk, we genotyped six nonsynonymous sing le-nucleotide polymorphisms that were predicted to be deleterious and found two (M4631, 1389G>T and N2792S, 8375A>G) to be associated with an allele dose-dependent increase in risk of familial breast cancer in a German population. We extended the analysis of AKAP9 M4631, which is in strong linkage disequilibrium with AKAP9 N2792S, to 9523 breast cancer patients and 13770 healthy control subjects from seven independent European and Australian breast cancer studies. All statistical tests were two-sided. The collaborative analysis confirmed the association of M4631 with increased breast cancer risk. Among all breast cancer patients, the combined adjusted odds ratio (OR) of breast cancer for individuals homozygous for the rare allele TT (frequency = 0.19) compared with GG homozygotes was 1.17 (95% confidence interval [CL] = 1.08 to 1.27, P =.0003), and the OR for TT homozygotes plus GT heterozygotes compared with GG homozygotes was 1.10 (95% Cl = 1.04 to 1.17, P=.001). Among the combined subset of 2795 familial breast cancer patients, the respective ORs were 1.27 (95% Cl = 1.12 to 1.45, P =.0003) and 1.16 (95% Cl = 1.06 to 1.27, P =.001).
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