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Basic Characteristics of Mutations
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Mutation Site
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H580Q |
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Mutation Site Sentence
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These nucleotide mutations included 12 amino acid mutations in the pre-S1 gene (pre-S1_S78I), S gene (S21W, D144A, K160N, S174N, and I226S), P gene (E258D, G294R, I515L, H580Q, and P583S), and X gene (H52Y). |
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Mutation Level
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Amino acid level |
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Mutation Type
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Nonsynonymous substitution |
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Gene/Protein/Region
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RT |
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Standardized Encoding Gene
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P
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Genotype/Subtype
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B1 |
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Viral Reference
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HBVB1:AB287326;AB900104;AB287327;D23678;AB302095;AB931168;AB931169;AB073845;AB073858;AB900112;LC461174;LC461175;AB073852;AB073849;A864210;AB106884;AB882708;AB362933;AB900103;AB900097;D50522;AB073847;AB900105;AB900106;AB900095;AB073844;LC603638;LC603637;AB073843;AB900108;AB073842;AB073846;AB073854;AB073855;AB073857;AB073856;AB073851;AB900102;AB246341;D23679;LC500247;AB010292;AB010291;AB073850;AB602818;AB246342;AB246343;AB073838;AB010289;HBVB2:AB900107;AB073830;AB073837;AB073821;B2-AB073827;B2-AB031266;HBVB3:B3-M54923;B3-AB033555;B3-AB033543;B3-AB033551
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Functional Impact and Mechanisms
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Disease
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Hepatitis B Virus Infection
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Immune
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- |
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Target Gene
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-
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Clinical and Epidemiological Correlations
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Clinical Information
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Y |
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Treatment
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- |
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Location
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Japan |
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Literature Information
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PMID
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38748198
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Title
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Spontaneous reactivation of hepatitis B virus with multiple novel mutations in an elderly patient with resolved hepatitis B virus infection
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Author
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Sasaki T,Kakisaka K,Miyasaka A,Nishiya M,Yanagawa N,Kuroda H,Matsumoto T,Takahashi M,Okamoto H
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Journal
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Clinical journal of gastroenterology
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Journal Info
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2024 Aug;17(4):683-690
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Abstract
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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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Sequence Data
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HB22-1126;LC791220
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