Characterization of the dynamics of hepatitis B virus resistance to adefovir by ultra‐deep pyrosequencing
Christophe Rodriguez, Stéphane Chevaliez, Paul Bensadoun, Jean‐Michel Pawlotsky – 15 March 2013 – Hepatitis B virus (HBV) resistance to nucleoside/nucleotide analogs is frequent. Ultra‐deep pyrosequencing (UDPS) is a powerful new tool that can detect minor viral variants and characterize complex quasispecies mixtures. We used UDPS to analyze the dynamics of adefovir‐resistant HBV variants in patients with chronic HBV infection in whom adefovir resistance occurred during treatment. Amino acid substitutions known to confer resistance to adefovir were detected at baseline in most patients.