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Cancer risk in chronic hepatitis B: Do genome‐wide association studies hit the mark?
Author(s) -
Casper Markus,
Grünhage Frank,
Lammert Frank
Publication year - 2011
Publication title -
hepatology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.488
H-Index - 361
eISSN - 1527-3350
pISSN - 0270-9139
DOI - 10.1002/hep.24241
Subject(s) - hepatocellular carcinoma , genome wide association study , genotyping , single nucleotide polymorphism , hepatitis b virus , snp , locus (genetics) , genetic association , odds ratio , medicine , genetics , biology , gene , genotype , virus
To identify susceptibility variants for hepatitis B virus (HBV)‐related hepatocellular carcinoma (HCC), we conducted a genome‐wide association study by genotyping 440,794 SNPs in 355 chronic HBV carriers with HCC and 360 chronic HBV carriers without HCC, all of Chinese ancestry. We identified one intronic SNP (rs17401966) in KIF1B on chromosome 1p36.22 that was highly associated with HBV‐related HCC and confirmed this association in five additional independent samples, consisting of 1,962 individuals with HCC, 1,430 control subjects and 159 family trios. Across the six studies, the association with rs17401966 was highly statistically significant (joint odds ratio = 0.61, P = 1.7 × 10 −18 ). In addition to KIF1B , the association region tagged two other plausible causative genes, UBE4B and PGD . Our findings provide evidence that the 1p36.22 locus confers susceptibility to HBV‐related HCC, and suggest that KIF1B‐, UBE4B‐ or PGD‐related pathways might be involved in the pathogenesis of this malignancy.