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The role of hepatitis B virus core-related antigen in predicting hepatitis B virus relapse after cessation of entecavir in hepatitis B e antigen-negative patients
Pao-Yuan Huang 1 , Jing-Houng Wang 1 , Chao-Hung Hung 1 , Sheng-Nan Lu 1 , Tsung-Hui Hu 1 , Chen Chien-Hung 1
Affiliations
Affiliation
1
Division of Hepatogastroenterology, Department of Internal Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan.
PMID: 33932245 DOI: 10.1111/jvh.13528
Abstract
This study investigated the ability of hepatitis B core related antigen (HBcrAg) to predict hepatitis B virus (HBV) relapse in HBeAg-negative patients after cessation of entecavir therapy. A total of 301 HBeAg-negative patients without cirrhosis who had stopped entecavir therapy for at least 12 months were recruited. All patients fulfilled the stopping criteria proposed by the APASL 2012 guidelines. The five-year cumulative rates of virological relapse, clinical relapse, and HBsAg loss were 71.6%, 57.3%, and 18.7%, respectively. Serum HBsAg at end-of-treatment (EOT) was an independent predictor of virological relapse, clinical relapse and HBsAg loss; an EOT HBsAg of 150 IU/mL was the optimal cutoff value. The 5-year virological relapse rates for patients with <150 and ≥150 IU/mL HBsAg at EOT were 43.3% and 82.2% (P<.001), clinical relapse rates were 32.3% and 66.3% (P<.001), and HBsAg loss rates were 46.1% and 5.2% (P<.001), respectively. A baseline HBcrAg of 4 IU/mL was the optimal cutoff value for predicting HBV relapse. Among patients with an EOT HBsAg <150 IU/mL, the five-year virological relapse rates for patients with baseline HBcrAg levels ≤4 and >4 log U/mL were 27.9% and 59.1% (P=.006) and the clinical relapse rates were 18% and 48.1% (P=.014), respectively. EOT HBcrAg was not a significant predictor of virological or clinical relapse after cessation of entecavir. In conclusion, the combination of an EOT HBsAg of 150 IU/mL and baseline HBcrAg of 4 log U/mL can effectively predict the risk of HBV relapse after stopping entecavir therapy.
Keywords: Hepatitis B surface antigen; entecavir; hepatitis B core related antigen; hepatitis B virus; relapse.
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