Hepatitis B Immune Globulin (HBIg) to Restore Immune Control in People With Chronic Hepatitis B

In order to be eligible to participate in this study, an individual must meet all of the following criteria:

• Male or female >=18 years of age
• Known serum HBsAg positive with a level \<1,500 IU/mL measured within 144 weeks of screening
• Hepatitis B e antigen negative at the time of screening
• HBV DNA levels \<2000 IU/mL measured on two occasions at least 24 weeks and no more than 48 weeks apart, during screening
• ALT level \<=1.5 ULN measured on two occasions at least 24 weeks and no more than 48 weeks apart, during screening

EXCLUSION CRITERIA:

An individual who meets any of the following criteria will be excluded from participation in this study:

• Any treatment for HBV within the last 48 weeks
• Co-infection with HDV as defined by the presence of anti-HDV
• Co-infection with HCV as defined by the presence of anti-HCV with HCV RNA
• Co-infection with HIV as defined by the presence of anti-HIV
• Presence of anti-HBs
• Cirrhosis either diagnosed by a prior liver biopsy at any time or if not available by a transient elastography score >13 kPa.
• Decompensated liver disease as defined by serum bilirubin >2.5 mg/dL (with direct bilirubin > 0.5 mg/dL), prothrombin time of greater than 2 seconds prolonged, a serum albumin of less than 3.5 g/dL, or a history of ascites, variceal bleeding or hepatic encephalopathy.
• Presence of other causes of liver disease, (i.e. hemochromatosis, Wilson disease, alcoholic liver disease, alpha-1-anti-trypsin deficiency).
• A history of organ transplantation, or in the absence of organ transplantation any medical condition requiring the chronic use of more than 5 mg of prednisone (or its equivalent) daily.
• Severe IgA deficiency
• Severe allergic reaction to any human immunoglobulin product
• Significant systemic illness other than liver diseases including congestive heart failure, renal failure, chronic pancreatitis, and diabetes mellitus with poor control, that in the opinion of the investigator may interfere with therapy.
• Pregnancy or for women of childbearing potential, inability or unwillingness to use an effective form of contraception during study participation.
• Lactating women.
• Hepatocellular carcinoma (HCC), or the presence of a mass on imaging studies of the liver that is suggestive of HCC, or an alpha-fetoprotein level of greater than 500 ng/mL
• eGFR \< 50 ml/min, serum creatinine > 1.3 mg/dL
• History of hypersensitivity to pegylated interferon-alpha
• Platelet count \<90 mm3/dL
• Hgb \<12 g/dL for males and \<11 g/dL for females
• Active ethanol/drug abuse/psychiatric problems such as major depression, schizophrenia, bipolar illness, obsessive-compulsive disorder, severe anxiety, or personality disorder that, in the investigator s opinion, might interfere with participation in the study.
• History of malignancy or treatment for a malignancy within the past 3 years (except adequately treated carcinoma in situ or basal cell carcinoma of the skin).
• History of immune-mediated disease, or cerebrovascular, chronic pulmonary or cardiac disease associated with functional limitation, retinopathy, uncontrolled thyroid disease, poorly controlled diabetes or uncontrolled seizure disorder, as determined by a study physician.
• Presence of conditions that, in the opinion of the investigators, would not allow the patient to be followed in the current study.
• Inability of subject to understand and the unwillingness to sign a written informed consent document.