Abstract
Spontaneous reactivation of the Hepatitis B virus (HBV) is rare in individuals with previously resolved infections. This report presents the case of a 71 year-old Japanese woman who experienced HBV reactivation without any prior immunosuppressive therapy or chemotherapy. Before the onset of liver injury, the patient was negative for hepatitis B surface antigen (HBsAg) but positive for hepatitis B surface antibody. She subsequently developed liver injury, with the reappearance of HBsAg and HBV DNA. The patient was successfully treated with tenofovir alafenamide, and prednisolone. Full-genome sequencing of HBV revealed subgenotype B1 without hepatitis B e-negative mutations in the precore and core promoter regions and 12 amino acid alterations in the pre-S1/S, P, and X genes. Notably, the S gene mutations D144A and K160N, which alter the antigenicity of HBsAg and potentially contribute to its reactivation, were identified. This case emphasizes the importance of vigilance for spontaneous reactivation of resolved HBV, highlighting the need for comprehensive genomic analysis to understand the associated virological intricacies.
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Conceptualization: Tokio Sasaki, Akio Miyasaka. Investigation: Masaharu Takahashi, Hiroaki Okamoto. Writing-original draft: Tokio Sasaki. Writing, review, and editing: Keisuke Kakisaka, Akio Miyasaka, Masao Nishiya, Naoki Yanagawa, Hidekatsu Kuroda, Takayuki Matsumoto, Masaharu Takahashi, and Hiroaki Okamoto. Approval of final manuscript: All authors.
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Sasaki, T., Kakisaka, K., Miyasaka, A. et al. Spontaneous reactivation of hepatitis B virus with multiple novel mutations in an elderly patient with resolved hepatitis B virus infection. Clin J Gastroenterol (2024). https://doi.org/10.1007/s12328-024-01984-1
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DOI: https://doi.org/10.1007/s12328-024-01984-1