Abstract
Background & aim: Higher elevation of alanine aminotransferase (ALT) occasionally leads to severe outcomes in hepatitis B virus (HBV)-infected patients. Our aim is to investigate the HBV sequence mutations associated with higher ALT elevation. Materials & methods: We analyzed full-length HBV sequences from patients with or without higher ALT elevation. Results: Nucleotide mutations in precore and core regions, which are associated with severe hepatitis B, were found in two HBV-infected patients with higher ALT elevation. Amino acid mutations within the pre-S1, pre-S2 and S regions were also found in a patient with HBV virologic breakthrough during the use of nucleoside analogs. Conclusion: It may be useful for HBV-infected patients with higher ALT elevation to analyze full-length HBV genome.
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