April 24, 2026 · Gut · DOI: 10.1136/gutjnl-2025-337127

Differential intrahepatic integrated HBV DNA patterns between HBeAg-positive and HBeAg-negative chronic hepatitis B

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The authors aimed to investigate the differences in intrahepatic covalently closed circular DNA (cccDNA) and integrated hepatitis B virus (HBV) DNA (iDNA) patterns between HBeAg-positive and HBeAg-negative chronic hepatitis B (CHB) patients. They found that HBeAg-positive patients had higher levels of cccDNA and associated biomarkers, while HBeAg-negative patients exhibited a greater proportion of iDNA, particularly clustered at specific integration sites, suggesting that iDNA may be the primary source of hepatitis B surface antigen (HBsAg) in this group. This study highlights the distinct virological characteristics and potential implications for disease progression in HBeAg-positive versus HBeAg-negative CHB.

Daryl T-Y Lau, Elena S Kim, Zhili Wang, Wendy C King, David E Kleiner, Marc G Ghany, Yuanjie Liu, Raymond Chung, Richard K Sterling, Gavin Cloherty, Selena Y Lin, Hsin-Ni Liu, Ning Sun, Ying-Hsiu Su, Haitao Guo

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