Abstract:
AIM:To investigate the clinical implications of hepatitis B virus (HBV) preS1 deletion. METHODS:We developed a fluorescence resonance energy transfer-based real-time polymerase chain reaction (RT-PCR) that can detect four genotypes (wild type, 15-bp, 18-bp and 21-bp deletion). The PCR method was used in two cohorts of Korean chronic HBV subjects with genotype C infections. Cohort I included 292 chronic HBV subjects randomly selected from Cheju National University Hospital (Jeju, South Korea) or Seoul National University Hospital (Seoul, South Korea), and cohort II included 90 consecutive chronic HBV carriers recruited from Konkuk University Hospital (Seoul, South Korea); the cohort II patients did not have hepatocellular carcinoma or liver cirrhosis. RESULTS:The method proposed in this study identified 341 of 382 samples (89.3%). Deletion variants were identified in 100 (29.3%) of the 341 detected samples. In both cohorts, the subjects with deletions had a significantly higher Hepatitis B virus e antigen (HBeAg)-positive seroprevalence [cohort I, wild (51.0%) vs deletion (75.0%), P < 0.001; cohort II, wild (69.2%) vs deletion (92.9%), P = 0.002] and higher HBV DNA levels [cohort I, wild (797.7 pg/mL) vs deletion (1678.9 pg/mL), P = 0.013; cohort II, wild (8.3 × 10(8) copies/mL) vs deletion (2.2 × 10(9) copies/mL), P = 0.049], compared to subjects with wild type HBV. CONCLUSION:HBV genotype C preS1 deletion may affect disease progression in chronic HBV subjects through an extended duration of HBeAg seropositive status and increased HBV replications.
journal_name
World J Gastroenteroljournal_title
World journal of gastroenterologyauthors
Lee SA,Kim KJ,Kim H,Choi WH,Won YS,Kim BJdoi
10.3748/wjg.v21.i16.5039subject
Has Abstractpub_date
2015-04-28 00:00:00pages
5039-48issue
16eissn
1007-9327issn
2219-2840journal_volume
21pub_type
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