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JOURNAL OF HEPATOLOGY
Volume 56, Issue 3, Pages 729-730Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhep.2011.08.015
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To identify the genetic susceptibility factor(s) for hepatitis C virus-induced hepatocellular carcinoma (HCV-induced HCC), we conducted a genome-wide association study using 432,703 autosomal SNPs in 721 individuals with HCV-induced HCC (cases) and 2890 HCV-negative controls of Japanese origin. Eight SNPs that showed possible association (P < 1 x 10(-5)) in the genome-wide association study were further genotyped in 673 cases and 2596 controls. We found a previously unidentified locus in the 5' flanking region of MICA on 6p21.33 (rs2596542, P(combined) = 4.21 x 10(-13), odds ratio = 1.39) to be strongly associated with HCV-induced HCC. Subsequent analyses using individuals with chronic hepatitis C (CHC) indicated that this SNP is not associated with CHC susceptibility (P = 0.61) but is significantly associated with progression from CHC to HCC (P = 3.13 x 10(-8)). We also found that the risk allele of rs2596542 was associated with lower soluble MICA protein levels in individuals with HCV-induced HCC (P = 1.38 x 10(-13)). (C) 2011 European Association for the Study of the Liver. Published by Elsevier B.V. All rights reserved.
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