Eligibility Criteria:
Inclusion Criteria:
* Participants who have documented chronic HBV infection ≥6 months prior to screening and currently receiving stable NA therapy defined as no changes to their NA regimen from at least 6 months prior to Screening and with no planned changes to the stable regimen over the duration of the study.
* Plasma or serum HBsAg concentration \>100 IU/mL, but no greater than ≤3000 IU/mL.
* Plasma or serum HBV DNA concentration must be adequately suppressed, defined as plasma or serum HBV DNA \<90 IU/mL.
* Alanine aminotransferase (ALT) ≤2 × upper limit of normal (ULN).
* Participants who are willing and able to cease their NA treatment in accordance with the protocol.
Exclusion Criteria:
* Clinically significant abnormalities, aside from chronic HBV infection in medical history (e.g., moderate severe liver disease other than chronic HBV, acute coronary syndrome within 6 months of screening, major surgery within 3 months of screening, significant/unstable cardiac disease, uncontrolled diabetes, bleeding diathesis or coagulopathy) or physical examination.
Co-infection with:
a) Current history of Hepatitis C infection or participants that have been cured for \<12 months at the time of screening b) Human immunodeficiency virus (HIV), c) Hepatitis D virus.
* History of or suspected liver cirrhosis and/or evidence of cirrhosis.
* Diagnosed or suspected hepatocellular carcinoma.
* History of malignancy within the past 5 years except for specific cancers that are cured by surgical resection (e.g., skin cancer). Participants under evaluation for possible malignancy are not eligible.
* History of vasculitis or presence of symptoms and signs of potential vasculitis (e.g., vasculitic rash, skin ulceration, repeated blood detected in urine without identified cause) or history/presence of other diseases that may be associated with vasculitis condition (e.g., systemic lupus erythematosus, rheumatoid arthritis, relapsing polychondritis, mononeuritis multiplex).
* History of extrahepatic disorders possibly related to HBV immune conditions (e.g., nephrotic syndrome, any type of glomerulonephritis, polyarteritis nodosa, cryoglobulinemia, uncontrolled hypertension).
* History of alcohol or drug abuse/dependence.
* Currently taking, or took within 3 months of screening, any immunosuppressing drugs (e.g., prednisone), other than a short course of therapy (≤2 weeks) or topical/inhaled steroid use.
* Participants to whom immunosuppressive treatment, including therapeutic doses of steroids is contraindicated, should not be considered for enrolment in the study.
* Currently taking, or has taken within 12 months of Screening, any interferon containing therapy.
* Participants requiring anti coagulation therapies (e.g., warfarin, Factor Xa inhibitors) or anti-platelet agents (like clopidogrel or aspirin) unless treatment can safely be discontinued throughout duration of the study, by the discretion of the investigator. Occasional use is permitted.
* Prior treatment with any oligonucleotide or siRNA within 12 months prior to the first dosing day.
* Prior treatment with bepirovirsen.