HBV Mutation Detail Information

Virus Mutation HBV Mutation C1766T


Basic Characteristics of Mutations
Mutation Site C1766T
Mutation Site Sentence The occurrences of T1753 V, C1766T, T1768A, G1862T and G1899A mutations were low in the three patients groups and the frequency of almost all of these mutations did not even reach 20 % (Table 2).
Mutation Level Nucleotide level
Mutation Type
Gene/Protein/Region BCP
Standardized Encoding Gene
Genotype/Subtype -
Viral Reference -
Functional Impact and Mechanisms
Disease Acute-On-Chronic Liver Failure     Hepatitis B, Chronic    
Immune -
Target Gene -
Clinical and Epidemiological Correlations
Clinical Information Y
Treatment -
Location China
Literature Information
PMID 26202756
Title Hepatitis B virus genotype B and mutations in basal core promoter and pre-core/core genes associated with acute-on-chronic liver failure: a multicenter cross-sectional study in China
Author Yang G,Han M,Chen F,Xu Y,Chen E,Wang X,Liu Y,Sun J,Hou J,Ning Q,Wang Z
Journal Hepatology international
Journal Info 2014 Oct;8(4):508-16
Abstract BACKGROUND AND AIM: In China, acute-on-chronic liver failure (ACLF) is mostly caused by hepatitis B virus (HBV). However, the mechanism remains unclear. This study aims to investigate the association between both HBV genotype and mutations in basal core promoter (BCP) and pre-core/core (pre-C/C) regions with the development of HB-ACLF. METHODS: A multicenter cross-sectional study was performed in China. Serum samples from 522 patients were analyzed, including 231 patients with mild-chronic hepatitis B (CHB-M), 84 with severe-chronic hepatitis B (CHB-S) and 207 with HB-ACLF. HBV genotype and related mutations in the BCP and pre-C/C regions were determined by direct sequencing. RESULTS: A significantly higher ratio of HBV genotype B to C was detected in HB-ACLF patients than in CHB-M or CHB-S patients. The A1762T/G1764A, A1846T and G1896A mutations were significantly more common in HB-ACLF patients infected with either genotype B or C as compared with CHB-M, whereas the C1913A/G and A2159G mutations were more associated with HB-ACLF in genotype C patients. Comparing with CHB-S, the A1762T/G1764A mutation in genotype B and the A2159G mutation in genotype C were significantly more common in HB-ACLF patients. A multivariate analysis showed that factors such as HBV genotype B, age >/=40 years and A1762T/G1764A, A1846T and G1896A mutations were independently associated with the development of HB-ACLF. CONCLUSION: Chronic HBV infection with genotype B, A1762T/G1764A, A1846T and G1896A mutations has a higher possibility to develop HB-ACLF. These virological factors could serve as possible molecular markers for prediction of the clinical outcomes of chronic HBV infection.
Sequence Data -
Mutation Information
Note
Basic Characteristics of Mutations
  • Mutation Site: The specific location in a gene or protein sequence where a change occurs.
  • Mutation Level: The level at which a mutation occurs, including the nucleotide or amino acid level.
  • Mutation Type: The nature of the mutation, such as missense mutation, nonsense mutation, synonymous mutation, etc.
  • Gene/Protein/Region: Refers to the specific region of the virus where the mutation occurs. Including viral genes, viral proteins, or a specific viral genome region. If the article does not specifically indicate the relationship between the mutation and its correspondence, the main
  • Gene/Protein/Region studied in the article is marked.
  • Genotype/Subtype: Refers to the viral genotype or subtype where the mutation occurs. If the article does not specifically indicate the relationship between the mutation and its correspondence, the main Genotype/Subtype studied in the article is marked.
  • Viral Reference: Refers to the standard virus strain used to compare and analyze viral sequences.
Functional Impact and Mechanisms
  • Disease: An abnormal physiological state with specific symptoms and signs caused by viral infection.
  • Immune: The article focuses on the study of mutations and immune.
  • Target Gene: Host genes that viral mutations may affect.
Clinical and Epidemiological Correlations
  • Clinical Information: The study is a clinical or epidemiological study and provides basic information about the population.
  • Treatment: The study mentioned a certain treatment method, such as drug resistance caused by mutations. If the study does not specifically indicate the relationship between mutations and their correspondence treatment, the main treatment studied in the article is marked.
  • Location: The source of the research data.
Literature Information
  • Sequence Data: The study provides the data accession number.