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To find support for risk-modifying genes in breast cancer, a haplotype GWAS in sporadic breast cancer cases was undertaken. The results were compared with the results from previous analyses in familial cases and all cases from the same Swedish cohort. In total, 2550 women with sporadic invasive breast cancer and 5021 healthy controls were included in a sliding-window haplotype GWAS using PLINK 1.07. The analysis of sporadic cases confirmed the loci on chromosomes 10q26.13, 11q13.3, and 16q12.1 and suggested one novel locus on chromosome 12p11.21 (OR = 1.42 = 4.55 × 10). A comparison between these loci and the same loci in the analyses of familial cases and all breast cancer cases was undertaken. Haplotype GWAS in sporadic cases of Swedish breast cancer cases supported known risk loci and suggested another risk locus. The loci identified in the analysis of sporadic and all breast cancer cases were suggested to act as modifiers of the risk of breast cancer. Haplotype analysis identified other loci with higher odds ratios than single-variant analysis. Further studies are needed to find out how to best include the findings in breast cancer prevention.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11675172 | PMC |
| http://dx.doi.org/10.3390/genes15121616 | DOI Listing |
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