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Genome-wide significant risk associations for mucinous ovarian carcinoma

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Title: Genome-wide significant risk associations for mucinous ovarian carcinoma
Authors: Goodman, Marc T.
Wilkens, Lynne R.
Issue Date: Aug 2015
Publisher: Nature
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Genome-wide association studies have identified several risk associations for ovarian carcinomas (OC) but not for mucinous ovarian carcinomas (MOC). Genotypes from OC cases and controls were imputed into the 1000 Genomes Project reference panel. Analysis of 1,644 MOC cases and 21,693 controls identified three novel risk associations: rs752590 at 2q13 (P = 3.3 × 10−8), rs711830 at 2q31.1 (P = 7.5 ×10^−12) and rs688187 at 19q13.2 (P = 6.8 × 10^−13). Expression Quantitative Trait Locus (eQTL) analysis in ovarian and colorectal tumors (which are histologically similar to MOC) identified significant eQTL associations for HOXD9 at 2q31.1 in ovarian (P = 4.95 × 10^−4, FDR = 0.003) and colorectal (P = 0.01, FDR = 0.09) tumors, and for PAX8 at 2q13 in colorectal tumors (P=0.03, FDR = 0.09). Chromosome conformation capture analysis identified interactions between the HOXD9 promoter and risk SNPs at 2q31.1. Overexpressing HOXD9 in MOC cells augmented the neoplastic phenotype. These findings provide the first evidence for MOC susceptibility variants and insights into the underlying biology of the disease.

Pages/Duration: 27
DOI: 10.1038/ng.3336
Appears in Collections:University of Hawaii Cancer Center / Cancer Research Center Faculty & Researcher Works

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