1. Differential roles of serum hepatitis B virus DNA and hepatitis B surface antigen level in predicting virological breakthrough in patients receiving lamivudine therapy
- Author
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Hung-Hsu Hung, Chien Wei Su, Jaw Ching Wu, Chu-Hui Wu, I-Jane Sheen, and Chun Ying Wu
- Subjects
Hepatitis B virus ,medicine.medical_specialty ,HBsAg ,Hepatology ,business.industry ,Hazard ratio ,Gastroenterology ,virus diseases ,Lamivudine ,Hepatitis B ,medicine.disease ,medicine.disease_cause ,digestive system diseases ,HBeAg ,Internal medicine ,Immunology ,medicine ,Risk factor ,business ,Viral load ,medicine.drug - Abstract
Background and Aim The role of serum hepatitis B surface antigen (HBsAg) level in determining virological breakthrough (VB) for patients with hepatitis B virus (HBV) infection receiving lamivudine remains unclear. The study aimed to evaluate the impact of serum HBsAg levels on VB among patients receiving lamivudine therapy, especially in a setting of low HBV viral load. Methods Two hundred sixty-eight consecutive treatment-naive patients who underwent lamivudine therapy for chronic hepatitis B were enrolled. Factors in terms of VB were analyzed by multivariate analysis. Results After a median treatment duration of 67.1 weeks, 102 patients had VB. Multivariate analysis showed that positive hepatitis B e antigen (HBeAg) (hazard ratio 2.165, P = 0.026) and HBV DNA levels ≥ 2000 IU/mL after 6 months of lamivudine therapy (hazard ratio 5.236, P = 0.001) were independent risk factors predicting VB. The cumulative VB rates stratified by HBeAg-positive and -negative at 3 years were 44.7% and 26.3%, respectively. At 3 years, the cumulative VB rates stratified by the HBV DNA 2000 IU/mL after 6 months of therapy could predict subsequent VB. In patients with lower on-treatment viral load, baseline serum HBsAg level is associated with the emergence of VB, especially for those with serum positive HBeAg.
- Published
- 2013
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