Discussion: Previously, the M1L, Q2K and S182Stop in the pre-S2 region and T105C in the pre-S/S region were reported as specific mutations in OBI patients.
Hepatitis B viral surface mutations in patients with adefovir resistant chronic hepatitis B with A181T/V polymerase mutations.
PMID: 20119580
2010
Journal of Korean medical science
Result: An F46S mutation was observed in Group P (n=2); a Q2K mutation in Groups P (n=1) and C (n=1); an A11T mutation in Groups P (n=2) and C (n=1); and an F22L mutation in Groups P (n=2) and C (n=2).
A study on sequence variations in pre-S/surface, X and enhancer II/core promoter/precore regions of occult hepatitis B virus in non-B, non-C hepatocellular carcinoma patients in Taiwan.
PMID: 19431214
2009
International journal of cancer
Abstract: Compared with the HBsAg-positive HCC controls, occult HBV-infected HCC patients had higher frequencies of M1I and Q2K in pre-S2 gene, G185R and S210N in surface gene, A36T and A44L in X gene, and G1721A in enhancer II gene, and had lower rates of pre-S deletions and A1762T/G1764A,
HBV mutation literature information.
PMID: 
2018
Infectious agents and cancer
