A genetic variant associated with the development of liver cancer in chronic hepatitis C virus carriers has been identified in a genome-wide study by researchers at the RIKEN Center for Genomic Medicine, Hiroshima University Hospital and Sapporo-Kosei General Hospital. The findings are based on a study of 3,312 Japanese individuals and appear in the journal Nature Genetics.
Hepatocellular carcinoma (HCC), the most common type of liver cancer, is the third leading cancer-related cause of death and the seventh most common form of cancer worldwide. The hepatitis C virus (HVC) is the main risk factor for HCC in many western countries and in Japan, where of the more than 30,000 deaths each year from HCC, 70% involve HVC.
AdvertisementTo identify risk factors connecting HVC and HCC, the research group conducted a genome-wide study on a group of 3,312 Japanese individuals carrying the hepatitis C virus. Analyzing a total of 467,538 genetic markers (called single nucleotide polymorphisms or SNPs) in a group of 212 HCV carriers with HCC and 765 HCV carriers without HCC, the group uncovered one SNP associated with HCC risk, located on a gene called DEPDC5. The association was confirmed in an independent replication study on a population of 2335 HVC carriers, 710 with HCC and 1625 without HCC.
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