Result: T118A/R/V, A128V and S/T143L/M had the highest prevalence in genotype D and in Europe, being present >3% of the sequences.
Result: Other VEMs that had an overall prevalence of >1% were T118A/R/V, M133I/L/T, A128V, Q129H/N/R, G145A/R, P120S/T and S/T143L/M (Figure 2A).
Discussion: For example, T118A/R/V, A128V and D144A/E/G/N variants are more common in Europe, which may relate to better vaccine c
Detection of circulating hepatitis B virus immune escape and polymerase mutants among HBV-positive patients attending Institut Pasteur de Bangui, Central African Republic.
PMID: 31682960
2020
International journal of infectious diseases
Abstract: Potential IEMs sY100C, sA128V, and sM133T, and several polymerase mutants were identified.
Result: Six of these (sL127I, sA128V, sG130S, sM133T, sF134I, and S140T) were located in the 'a' determinant region, among which three immune escape mutants (IEMs) (sY100C
Case Report: Application of hepatitis B virus (HBV) deep sequencing to distinguish between acute and chronic infection.
Method: In addition, we looked for Vaccine Escape Mutants (VEMs) and polymorphic mutations outside (Y100C, Q101H, S117N, T118R and P120S) and within the HBsAg immuno-dominant 'a' determinant (I/T126A/N, A128V, Q129H/R, G130N, M133L/T, K141E, S143L, D144A/H/E and G145R).
Analysis of HBV basal core promoter/precore gene variability in patients with HBV drug resistance and HIV co-infection in Northwest Ethiopia.
Immune-escape mutations and stop-codons in HBsAg develop in a large proportion of patients with chronic HBV infection exposed to anti-HBV drugs in Europe.
Abstract: Additionally, the complete genome has a frameshift deletion of nine nucleotides from overlapping Surface and Polymerase genes, and a vaccine escape mutation, A128 V, in the surface protein.
HIV therapy with unknown HBV status is responsible for higher rate of HBV genome variability in Ethiopia.
Abstract: In particular, the 'a' determinant surface gene mutations (sT125S, sA128V, sQ129H/R, sT131I, sC137S, sT143M, sD144D/E, sG145R, sT148P) and the majority of clustered/multiple as well as drug selected immune escape HBsAg mutations were more prevalent