Abstract: We recently found four unique mutations [
G to A at nucleotide 1742 (
G1742A),
C1766T,
T1768A and
T1809C] in the
basal core promoter (
BCP) region of a genotype A hepatitis B virus (HBV) strain (
FH) obtained from a 53-year-old man with fatal
fulminant hepatitis.