Abstract: Strains with sK122R mutants (sK122R, sK122R + D144E, sK122R + C121R + D144E, and sK122R + F134L + D144E) from a follow-up OBI patient all showed significantly lower levels of HBsAg production than a wild-type strain.
Characterization of Novel Hepatitis B Virus PreS/S-Gene Mutations in a Patient with Occult Hepatitis B Virus Infection.