Abstract
Breast cancer risk is strongly associated with an intergenic region on 11q13. We have previously shown that the strongest risk-associated SNPs fall within a distal enhancer that regulates CCND1. Here, we report that, in addition to regulating CCND1, this enhancer regulates two estrogen-regulated long noncoding RNAs, CUPID1 and CUPID2. We provide evidence that the risk-associated SNPs are associated with reduced chromatin looping between the enhancer and the CUPID1 and CUPID2 bidirectional promoter. We further show that CUPID1 and CUPID2 are predominantly expressed in hormone-receptor-positive breast tumors and play a role in modulating pathway choice for the repair of double-strand breaks. These data reveal a mechanism for the involvement of this region in breast cancer.
Original language | English |
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Pages (from-to) | 255-266 |
Number of pages | 12 |
Journal | American Journal of Human Genetics |
Volume | 101 |
Issue number | 2 |
DOIs | |
Publication status | Published - 3 Aug 2017 |
Externally published | Yes |
Keywords
- 11q13
- DNA repair
- GWAS
- breast cancer
- enhancer
- long noncoding RNAs