Serum hepatitis B surface antigen quantification as a useful assessment for significant fibrosis in hepatitis B e antigen-positive hepatitis B virus carriers

Authors

  • Yun-hao Xun,

    1. Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
    2. Department of Liver Diseases, The Sixth People's Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
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  • Guo-qing Zang,

    Corresponding author
    1. Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, Shanghai, China
    • Correspondence

      Professor Jun-ping Shi, The Affiliated Hospital of Hangzhou Normal University, 126 Wenzhou Road, Hangzhou 310015, Zhejiang Province, China. Email: zjzfg2012@gmail.com and Professor Guo-qing Zang, Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, 600 Yishan Road, Shanghai 200233, China. Email: gqzg66@gmail.com

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  • Jian-chun Guo,

    1. Department of Liver Diseases, The Sixth People's Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
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  • Xiu-li Yu,

    1. Department of Liver Diseases, The Sixth People's Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
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  • Hong Liu,

    1. Department of Liver Diseases, The Sixth People's Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
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  • Jing Xiang,

    1. Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
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  • Jing Liu,

    1. Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
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  • Jun-ping Shi

    Corresponding author
    1. Department of Liver Diseases, The Sixth People's Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Hangzhou, Zhejiang, China
    2. Department of Liver Disease, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China
    • Correspondence

      Professor Jun-ping Shi, The Affiliated Hospital of Hangzhou Normal University, 126 Wenzhou Road, Hangzhou 310015, Zhejiang Province, China. Email: zjzfg2012@gmail.com and Professor Guo-qing Zang, Department of Infectious Diseases, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University, 600 Yishan Road, Shanghai 200233, China. Email: gqzg66@gmail.com

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  • Conflict of interest: No conflict of interest to be declared.
  • Author contributions: Yun-hao Xun, Jun-ping Shi, and Guo-qing Zang were responsible for study design and data analysis. Yun-hao Xun, Jun-ping Shi, Jian-chun Guo, and Xiu-li Yu were responsible for patient recruitment and care. Hong Liu was responsible for histological assessment and fibrosis scoring. Jing Xiang and Jing Liu were responsible for database management. All investigators participated in drafting the manuscript, and have approved the final version of the paper.

Abstract

Background and Aims

The role of serum quantitative hepatitis B surface antigen (qHBsAg) in identifying hepatitis B virus (HBV) carriers with significant fibrosis is unknown. This study aims to evaluate the diagnostic value of qHBsAg for hepatic fibrosis in hepatitis B e antigen (HBeAg)-positive HBV carriers.

Methods

Consecutive biopsy-proven HBeAg-positive HBV carriers were prospectively recruited in our center from 2009 to 2011 and were randomly divided into training and validation set. Area under receiver-operator curve (AUC) was used to determine the diagnostic accuracy of simple tests for significant fibrosis (Scheuer stage, F ≥ 2).

Results

Overall, a total of 197 eligible patients (median age 31 years; 149 males) were enrolled. The median qHBsAg was 4.20 (log10 IU/mL). Significant fibrosis was confirmed in 112 (56.9%) patients. By logistical regression analysis, qHBsAg and γ-glutamyl transpeptidase were identified as predictors for significant fibrosis in training set (n = 124). Thus, qHBsAg index and γ-glutamyl transpeptidase to qHBsAg ratio (GqHBsR) were selected for the subsequent analysis. In the training set, an AUC of 0.762, 0.826, 0.749, and 0.771 was observed for qHBsAg index, GqHBsR, FIB-4, and aspartate aminotransferase to platelet ratio index, respectively (all P < 0.05). GqHBsR yielded a higher AUC than aspartate aminotransferase to platelet ratio index and FIB-4 (both P < 0.05). Using the optimal cut-off of 7.78, GqHBsR showed a sensitivity of 78.9% and a specificity of 73.6%. About 80% of liver biopsy could be avoided in the entire cohort.

Conclusions

Serum qHBsAg-based simple tests, especially GqHBsR, can accurately and specifically identify significant fibrosis in treatment-naïve HBeAg-positive HBV carriers.

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