Predominance of pre‐S1 mutated hepatitis B virus in a patient following treatment with adefovir dipivoxil
Erica Villa, Valentina Boarino, Antonella Grottola, Roberta Gelmini, Nicole G. Lama – 30 December 2003 – A liver transplant recipient reinfected with a lamivudine‐resistant mixed wild‐type/pre‐S1–deleted hepatitis B virus (HBV) strain and rescued with adefovir dipivoxil was still HBV DNA positive after more than 1 year of therapy. Analysis of serum HBV DNA, amplified by polymerase chain reaction and directly sequenced by dideoxy nucleotide chain‐termination method, showed that adefovir inhibited the wild type, but not the pre‐S1–deleted HBV.