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Predictive value of HBsAg quantification for determining the clinical course of genotype C HBeAg-negative carriers.

 Hana Park  ;  Jung Min Lee  ;  Ju Hee Seo  ;  Hyon Suk Kim  ;  Sang Hoon Ahn  ;  Do Young Kim  ;  Kwang-Hyub Han  ;  Chae Yoon Chon  ;  Jun Yong Park 
 Liver International, Vol.32(5) : 796-802, 2012 
Journal Title
 Liver International 
Issue Date
BACKGROUND/AIMS: Hepatitis B virus surface antigen (HBsAg) quantification has been suggested to discriminate inactive carriers from hepatitis e antigen (HBeAg) negative chronic hepatitis, but it could be genotype-dependent. We studied the predictive value of HBsAg quantification in genotype C HBeAg-negative hepatitis B virus (HBV) carriers. METHODS: We recruited 104 HBeAg-negative HBV carriers with HBV DNA levels < 2,000 IU/ml and normal alanine aminotransferase (ALT) levels for at least 12 months and prospectively followed them for > 36 months. Patients were classified into two groups: inactive carriers (IC) who showed HBV DNA levels < 2,000 IU/ml and persistently ALT ≤ 40 IU/ml throughout the follow-up period and patients with HBeAg-negative chronic hepatitis (ENH). RESULTS: After follow-up, 73 patients were categorized into the IC group and 31 patients into the ENH group. HBsAg levels were significantly lower in the IC group than in the ENH group. The diagnostic accuracy of single-point HBsAg levels for predicting viral activation was favourable (AUROC = 0.710, P < 0.001). Diagnostic accuracy improved when HBsAg was combined with baseline HBV DNA levels (AUROC = 0.750, P < 0.001). The combination of HBsAg levels > 850 IU/ml and HBV DNA > 850 IU/ml predicted the reactivation of HBV replication with 84.6% diagnostic accuracy. CONCLUSIONS: Although it is inferior to other genotypes and to serum HBV DNA alone, single-point HBsAg level has a favourable diagnostic accuracy in genotype C HBeAg-negative HBV carriers and is expected to provide additional information for managing chronic hepatitis B.
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1. College of Medicine (의과대학) > Dept. of Laboratory Medicine (진단검사의학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
김도영(Kim, Do Young)
김현숙(Kim, Hyon Suk) ORCID logo https://orcid.org/0000-0001-5662-7740
박준용(Park, Jun Yong) ORCID logo https://orcid.org/0000-0001-6324-2224
박하나(Park, Ha Na)
서주희(Seo, Ju Hee)
안상훈(Ahn, Sang Hoon) ORCID logo https://orcid.org/0000-0002-3629-4624
이중민(Lee, Jung Min)
전재윤(Chon, Chae Yoon)
한광협(Han, Kwang-Hyub) ORCID logo https://orcid.org/0000-0003-3960-6539
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