Higher lifetime chance of spontaneous surface antigen loss in hepatitis B carriers with genotype C infection.

Abstract:

BACKGROUND:Clearance of hepatitis B surface antigen (HBsAg) indicates clinical control of hepatitis B virus (HBV) infection. However, little is known about the impact of viral genomic variations on HBsAg loss. METHODS:We explored the association between viral genomic factors and HBsAg loss in 2121HBeAg-negative patients. HBV pre-core stop codon (1896) and basal core promoter (BCP) (1762/1764) sequences were determined in patients with HBV DNA ≥200 IU/mL (N = 1693). The effect of HBV genotype on HBsAg loss was further validated in the whole cohort of 3445 HBsAg carriers. RESULTS:The cumulative lifetime (age 28-75 years) incidence of HBsAg loss was 50.4% in 2121 HBeAg-negative patients. We found that genotype C, but not pre-core stop codon or BCP mutants, was associated with HBsAg loss. Compared to genotype B patients, genotype C patients had higher lifetime chance of HBsAg loss, with hazard ratio of 1.8 (95% confidence interval: 1.4-2.4). Multivariable analysis showed that male sex, elevated ALT levels, lower serum HBV DNA and HBsAg levels, and genotype C infection were associated with higher chance of HBsAg loss independently. We then performed sensitivity analysis, which re-included HBeAg-positive, cirrhotic and treatment-experienced patients, and confirmed the robustness of our results in 3445 HBsAg carriers. CONCLUSION:Genotype C infection, compared to genotype B, is associated with a higher lifetime chance of HBsAg loss in Asian HBV carriers.

journal_name

Aliment Pharmacol Ther

authors

Tseng TC,Liu CJ,Chen CL,Yang WT,Yang HC,Su TH,Wang CC,Kuo SF,Liu CH,Chen PJ,Chen DS,Kao JH

doi

10.1111/apt.13170

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

949-60

issue

10

eissn

0269-2813

issn

1365-2036

journal_volume

41

pub_type

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