Abstract:
:Deletions and insertions in the hepatitis B virus (HBV) X region have been associated with severe forms of liver disease, including hepatocellular carcinoma (HCC). However, the molecular epidemiologic features of this virus have been described rarely. Deletions and insertions in the X region were determined by direct sequencing in a Korean cohort of 267 patients with different clinical statuses. Deletions and insertions were observed in two sets of six patients each (2.2%, 6/267). The prevalence of deletions or insertions was significantly higher in patients with severe liver disease, HCC, or cirrhosis of the liver (7.2%, 10/132) compared to patients who were carriers or had chronic hepatitis (1.5%, 2/135) (P = 0.017). All deletions in six strains were concentrated at the C terminal end of HBx, encompassing the 113th to 154th codons. A total of four novel types of insertions (PKLL, GM, FFN, and tt) were observed in six patients. Of particular interest, all six strains with insertions were accompanied by double mutations in the basal core promoter (BCP). In conclusion, these results suggest that deletions or insertions in the X region may contribute to disease progression in Korean patients with genotype C infection.
journal_name
J Med Viroljournal_title
Journal of medical virologyauthors
Lee SA,Mun HS,Kim H,Lee HK,Kim BJ,Hwang ES,Kook YH,Kim BJdoi
10.1002/jmv.21938subject
Has Abstractpub_date
2011-01-01 00:00:00pages
65-70issue
1eissn
0146-6615issn
1096-9071journal_volume
83pub_type
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