Natural variability in surface antigen and reverse transcriptase domain of hepatitis B virus in treatment-naive chronic HBV-infected Egyptian patients.
Abstract: Additionally, 11 occult samples (19 %) were detected, in which the predominant mutations of HBsAg were S143L (7 samples) followed by D144A and T125M (4 samples each).
Global prevalence and phylogeny of hepatitis B virus (HBV) drug and vaccine resistance mutations.
Method: We also considered eight VEMs (C139S, S/T140I, P142S, S/T143L/M, D144A/E/G/N, G145A/E/R, K141A/I/R and C147S) which are located within the epitope region neutralized by the HBV vaccine (aa139-147).
Result: We considered the distribution of 12 RAMs (S106C/G, D134E, R153W/Q, V173L, L180M, A181T/V, A194T, A200V, PMID: 34210073
2021
Viruses
Introduction: In the following years, other mutations observed on the a-determinant, which are considered as immune escape variants, including T116N, P120S/E, I/T126A/N/I/S, Q129H/R, M133L, K141E, P142S, and D144A/E, have also been reported.
Characterization of Antigen Escape Mutations in Chronic HBV-Infected Patients in Upper Egypt.
Abstract: The observed mutations were T115S (3/20, 15%), P120T/S (3/20, 15%), T126S (1/20, 5%), Q129R (2/20, 10%), M133T (2/20, 10%), S143L (5/20, 25%), D144E/A (3/20, 15%), and G145R/A (4/20, 20%).
Result: The following mutation pairs were observed: T115S (3/20, 15%), P120T/S (3/20, 15%), T126S (1/20, 5%), Q129R (2/20, 10%), M133T (2/20, 10%), S143L (5/20, 25%), D144E/A (3/20, 15%), and G145R/A
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
Discussion: Many studies (Protzer-Knolle et al.,; Beckebaum et al.,; Cheung et al.,) have demonstrated that M133T itself is frequently associated with occult HBV infection and is also often associated with some mutations in the 'a' determinant such as G130N, F134L, D144A, D144G, G145A, G145K, and G145R or failed hepatitis B immune globulin (HBIG) prophylaxis.
In silico functional and structural characterization of hepatitis B virus PreS/S-gene in Iranian patients infected with chronic hepatitis B virus genotype D.
Introduction: Also, mutations may occur in association with either vaccine-induced immune-escape (P120T, K122R, T126S, Q129H, G130N, M133L, and M133T) or in relation to the patients with occult HBV infection (Y100C, C124R, C124Y, K141E, and D144A).
A recombinant human immunoglobulin with coherent avidity to hepatitis B virus surface antigens of various viral genotypes and clinical mutants.
Result: In contrast, the polyclonal anti-HBsAg antibody signal was severely reduced in several mutants within the 2nd loop of 'a' determinant, such as K141I, P142L/S, D144A/E, G145K/R, N146S and T148I.
Effect of hepatitis B virus (HBV) surface-gene variability on markers of replication during treated human immunodeficiency virus-HBV infection in Western Africa.
HBV mutation literature information.
PMID: 
2022
Scientific reports
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