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, s
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, sA128V, and sM133T) were identified.
Evaluation of the pol/S Gene Overlapping Mutations in Chronic Hepatitis B Patients in Northern Cyprus.
PMID: 31880877
2019
Polish journal of microbiology
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.
Hepatitis B infection among HIV infected individuals in Gabon: Occult hepatitis B enhances HBV DNA prevalence.
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.
Result: This is the case of sA128V and sP120S selected with higher prevalence in genotype-D than A (sA128V: 3.3%[19/573] vs 0.8%[2/255], P = 0.032; sP120S: 5.1%[29/573] vs 0.8[2/255], P = 0.003).
Figure: Immune-associated escape mutations (sQ101K, sT114R, sP120S/T/A, sT123A/N, sT126N/S, s
Temporal trend of hepatitis B surface mutations in the post-immunization period: 9 years of surveillance (2005-2013) in eastern China.
Result: In addition, the other six mutations types (P127T, A128V, G130E, T131P, M133I and D144N) were not yet identified as VEMs, and D144N was a newly identified mutation (Table 3).
Table:
Discussion: Additionally, a small amount of P127T, A128V, G130E, T131P/N, M133T/I, F134L and D144N mutations was observed in our study, including the less frequent T131N/M133T double mutations.