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Long-term incidence and predictors of hepatitis B surface antigen loss after discontinuing nucleoside analogues in noncirrhotic chronic hepatitis B patients.
Clinical Microbiology and Infection 2018 September
OBJECTIVE: To investigate the long-term incidence and predictors for hepatitis B surface antigen (HBsAg) loss after nucleoside analogue therapy.
METHODS: The study included 411 noncirrhotic chronic hepatitis B patients (148 hepatitis B e antigen (HBeAg)-positive and 263 HBeAg-negative patients) who were treated with lamivudine (n = 110) or entecavir (n = 301) with posttreatment follow-up of at least 12 months.
RESULTS: In HBeAg-positive patients, the 8-year cumulative rates of virologic relapse, clinical relapse and HBsAg loss were 55.6%, 47.7% and 19.6%, respectively. In HBeAg-negative patients, the rates were 69.3%, 58.9% and 33.1%, respectively. Cox regression analysis showed that hepatitis B virus genotype C and lower end-of-treatment HBsAg levels were independent predictors of HBsAg loss in HBeAg-positive and -negative patients. The 5-year HBsAg loss rate was 47.3% in HBeAg-positive patients with end-of-treatment HBsAg levels <300 IU/mL, while the 8-year HBsAg loss rate was 69.3% in HBeAg-negative patients with end-of-treatment HBsAg levels <200 IU/mL. Five patients experienced hepatitis flares with decompensation after stopping nucleoside analogue therapy, and one died after retreatment. Of the 48 patients who developed off-therapy HBsAg loss, two developed hepatocellular carcinoma.
CONCLUSIONS: The rate of HBsAg loss was relatively high and the rate of hepatic events was low in noncirrhotic patients who discontinued nucleoside analogue therapy.
METHODS: The study included 411 noncirrhotic chronic hepatitis B patients (148 hepatitis B e antigen (HBeAg)-positive and 263 HBeAg-negative patients) who were treated with lamivudine (n = 110) or entecavir (n = 301) with posttreatment follow-up of at least 12 months.
RESULTS: In HBeAg-positive patients, the 8-year cumulative rates of virologic relapse, clinical relapse and HBsAg loss were 55.6%, 47.7% and 19.6%, respectively. In HBeAg-negative patients, the rates were 69.3%, 58.9% and 33.1%, respectively. Cox regression analysis showed that hepatitis B virus genotype C and lower end-of-treatment HBsAg levels were independent predictors of HBsAg loss in HBeAg-positive and -negative patients. The 5-year HBsAg loss rate was 47.3% in HBeAg-positive patients with end-of-treatment HBsAg levels <300 IU/mL, while the 8-year HBsAg loss rate was 69.3% in HBeAg-negative patients with end-of-treatment HBsAg levels <200 IU/mL. Five patients experienced hepatitis flares with decompensation after stopping nucleoside analogue therapy, and one died after retreatment. Of the 48 patients who developed off-therapy HBsAg loss, two developed hepatocellular carcinoma.
CONCLUSIONS: The rate of HBsAg loss was relatively high and the rate of hepatic events was low in noncirrhotic patients who discontinued nucleoside analogue therapy.
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