Abstract
Most common breast cancer susceptibility variants have been identified through genome-wide association studies (GWAS) of predominantly estrogen receptor (ER)-positive disease1. We conducted a GWAS using 21,468 ER-negative cases and 100,594 controls combined with 18,908 BRCA1 mutation carriers (9,414 with breast cancer), all of European origin. We identified independent associations at P < 5 × 10-8 with ten variants at nine new loci. At P < 0.05, we replicated associations with 10 of 11 variants previously reported in ER-negative disease or BRCA1 mutation carrier GWAS and observed consistent associations with ER-negative disease for 105 susceptibility variants identified by other studies. These 125 variants explain approximately 16% of the familial risk of this breast cancer subtype. There was high genetic correlation (0.72) between risk of ER-negative breast cancer and breast cancer risk for BRCA1 mutation carriers. These findings may lead to improved risk prediction and inform further fine-mapping and functional work to better understand the biological basis of ER-negative breast cancer.
Original language | English |
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Journal | Nature Genetics |
Volume | 49 |
Issue number | 12 |
Pages (from-to) | 1767-1778 |
ISSN | 1061-4036 |
DOIs | |
Publication status | Published - 1 Dec 2017 |
Keywords
- BRCA1 Protein/genetics
- Breast Neoplasms/ethnology
- European Continental Ancestry Group/genetics
- Female
- Genetic Predisposition to Disease/ethnology
- Genome-Wide Association Study/methods
- Heterozygote
- Humans
- Mutation
- Polymorphism, Single Nucleotide
- Receptors, Estrogen/metabolism
- Risk Factors