HBV Mutation Detail Information

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Mutation Information
Mutation Site D263E
Mutation Type Amino acid level
Gene/Protein/Region Type RT
Genotype/Subtype A;D
Relevant Drug tenofovir (TDF)
Country South Africa
Literature Information
PubMed PMID 32663786
Disease Chronic hepatitis B
Published Year 2020
Journal Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology
Title Evidence of tenofovir resistance in chronic hepatitis B virus (HBV) infection: An observational case series of South African adults.
Author Mokaya J,Maponga TG,McNaughton AL,Van Schalkwyk M,Hugo S,Singer JB,Sreenu VB,Bonsall D,de Cesare M,Andersson M,Gabriel S,Taljaard J,Barnes E,Preiser W,Van Rensburg C,Matthews PC
Evidence This individual also had concurrent large flares in liver enzymes (Figure 2 C Figure 2C). Genomic evidence of TDF resistance Patient ID 209 258 289 Treatment TDF + 3TC + FTC TDF + 3TC + FTC TDF Age range at recruitment 41-50 41-50 61-70 HIV status Positive Positive Negative Elastography score (kPa) 6.9 5.1 9.1 HBV DNA viral load, log10 IU/mL at time of sequencing 8.03 6.77 8.18 HIV RNA viral load, log10 copies/mL at time of sequencing 1.74 4.97 N/A Median coverage/site 4262 1601 14 HBV Genotype A D A Reverse transcriptase (RT) polymorphisms potentially associated with TDF resistance Y9H Y9H Y9H L91I F122L L91I H126Y S223A H126Y R153W* D263E S223A V173L*, V278I C256S L180M*, A317S M204V*, S223A C256S Summary of patient characteristics and HBV sequence data generated from three South African adults.

Contents
Description
Mutation Information Note
  • Gene/Protein/Region Type: Virus Gene (e.g. LMP-1) or Virus Protein (e.g. Rep 68) or Virus Region (e.g. S, X)
Literature Information Note
  • Evidence: sentence contains this mutation information in the citation