Efficacies of Entecavir Add on HBeAg Positive Patients With HBV DNA Positive During Peginterferon Alpha 2a Treatment

HBeAg positive patients with HBV DNA load ≥1000copies/ml after 6 months of peginterferon alpha 2a treatment will be enrolled randomized into two groups, in intervention group, patients will receive entecavir combine with peginterferon alpha 2a(PEG-IFN a-2a) treatment for 48 weeks and follow 24 weeks. Patients in control group will be continue treated with PEG-IFN a-2a for 48 weeks and followed 24 weeks. Serum HBV DNA load, HBsAg/anti-HBs level, HBeAg/anti-HBe will be tested at enrollment and every 3 months during the treatment course. Parameters of Liver and kidney function, and liver ultrasound examination will be tested with intervals 1-3 months. The efficacies of the combined therapy were evaluated by the rates of HBeAg seroconversion and HBsAg loss after 48 weeks of combined therapy, compared with control group.