O-27 IMPACT OF HBV GENOTYPE F IN THE DIAGNOSIS AND EVOLUTION OF PATIENTS WITH HBEAG-NEGATIVE CHRONIC HBV INFECTION Hugo Fainboim; Nicolas Dibenedeto; Paz Silvia; Mendizabal Manuel; Soledad Campuzano; Micaela Martinez; Luciana Tadey; Gabriel Deluchi; Bouzas Belen; Mammana Lilia; Diego Flichman;

O-22 DIFFERENTIAL MUTATION PATTERN ASSOCIATED WITH HEPATITIS B E ANTIGEN SEROCONVERSION BETWEEN SUBGENOTYPE F1b CLUSTERS: POTENTIAL ROLE IN PATHOGENESIS Micaela Martínez; Mercedes Elizalde; Micaela Speroni; Rodolfo Campos; Diego Flichman;

O-20 MOLECULAR AND BIOLOGICAL CHARACTERIZATION OF HEPATITIS B VIRUS SUBGENOTYPE F1b CLUSTERS: UNRAVELING ITS ROLE IN HEPATOCARCINOGENESIS María Mercedes Elizalde; Laura Mojseijczuk; Micaela Speroni; Luciana Tadey; Belén Bouzas; Lilia Mammana; Rodolfo Héctor Campos; Diego Martín Flichman;