- Hepatitis status: Diagnosis of chronic hepatitis B, as evidenced by positive Hepatitis B surface antigen (HBsAg) at Screening (Visit 1). Japan only: Subjects positive for HBsAg , antibodies to HBsAg, i.e., HBsAb, or Hepatitis B core antigen, i.e., HBcAb, at Screening (Visit 1). Note: Subjects with antibodies to HBsAg, i.e., HBsAb positive, only (i.e., negative for HBsAg and HBcAb) with a history of hepatitis B vaccination can be included.