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(2016)
Fine-Scale Mapping at 9p22.2 Identifies Candidate Causal Variants That Modify Ovarian Cancer Risk in BRCA1 and BRCA2 Mutation Carriers.
PLoS One, 11 (7).
ISSN 1932-6203
https://doi.org/10.1371/journal.pone.0158801
SGUL Authors: Hodgson, Shirley Victoria
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Abstract
Population-based genome wide association studies have identified a locus at 9p22.2 associated with ovarian cancer risk, which also modifies ovarian cancer risk in BRCA1 and BRCA2 mutation carriers. We conducted fine-scale mapping at 9p22.2 to identify potential causal variants in BRCA1 and BRCA2 mutation carriers. Genotype data were available for 15,252 (2,462 ovarian cancer cases) BRCA1 and 8,211 (631 ovarian cancer cases) BRCA2 mutation carriers. Following genotype imputation, ovarian cancer associations were assessed for 4,873 and 5,020 SNPs in BRCA1 and BRCA 2 mutation carriers respectively, within a retrospective cohort analytical framework. In BRCA1 mutation carriers one set of eight correlated candidate causal variants for ovarian cancer risk modification was identified (top SNP rs10124837, HR: 0.73, 95%CI: 0.68 to 0.79, p-value 2× 10-16). These variants were located up to 20 kb upstream of BNC2. In BRCA2 mutation carriers one region, up to 45 kb upstream of BNC2, and containing 100 correlated SNPs was identified as candidate causal (top SNP rs62543585, HR: 0.69, 95%CI: 0.59 to 0.80, p-value 1.0 × 10-6). The candidate causal in BRCA1 mutation carriers did not include the strongest associated variant at this locus in the general population. In sum, we identified a set of candidate causal variants in a region that encompasses the BNC2 transcription start site. The ovarian cancer association at 9p22.2 may be mediated by different variants in BRCA1 mutation carriers and in the general population. Thus, potentially different mechanisms may underlie ovarian cancer risk for mutation carriers and the general population.
Item Type: | Article | |||||||||
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Additional Information: | This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication. | |||||||||
Keywords: | General Science & Technology, MD Multidisciplinary | |||||||||
SGUL Research Institute / Research Centre: | Academic Structure > Molecular and Clinical Sciences Research Institute (MCS) Academic Structure > Molecular and Clinical Sciences Research Institute (MCS) > Cell Sciences (INCCCS) |
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Journal or Publication Title: | PLoS One | |||||||||
Article Number: | e0158801 | |||||||||
ISSN: | 1932-6203 | |||||||||
Language: | eng | |||||||||
Publisher License: | Creative Commons: Public Domain Dedication | |||||||||
Projects: |
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PubMed ID: | 27463617 | |||||||||
Web of Science ID: | WOS:000381515900021 | |||||||||
Go to PubMed abstract | ||||||||||
URI: | https://openaccess.sgul.ac.uk/id/eprint/108256 | |||||||||
Publisher's version: | https://doi.org/10.1371/journal.pone.0158801 |
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