Abstract: The most common point-mutations included N/H51Y/T/S/Q/P (30.4%), V68T/S/I (44.9%), T/N87S/T/P (46.2%) on PreS1 gene; T125S/N/P (30.8%), I150T (42.5%) on PreS2 gene; S53L (37.7%), A184V/G (39.3%), S210K/N/R/S (39.3%) on S gene.
Quasispecies variant of pre-S/S gene in HBV-related hepatocellular carcinoma with HBs antigen positive and occult infection.
Discussion: In the same study, S17A, P32L, W43L/R, H51P/R, and I84T/M of the pre-S1 region and W3R/Stop and S5A of the pre-S2 region were found in occult HBV infections.