Continuing Lamivudine Versus Switching to Entecavir in Patients Who Achieved Undetectable HBV DNA

Entecavir has a higher potent antiviral efficacy and a lower drug resistance rate than those of Lamivudine in nucleoside-naïve CHB patients. The switch from Lamivudine to Entecavir in patients who have undetectable hepatitis B virus DNA (HBV DNA \< 60 IU/mL) may lead to more prolonged viral suppression to undetectable level by PCR method, compared to patients with continuous lamivudine treatment. The results of this study will provide a rationale for switch treatment from one antiviral to another one, especially from LAM to ETV.