A Study of Switch From Nucleotide to Peginterferon Alfa-2a in CHB Patients Achieving HBeAg Loss and HBV DNA <200IU/ml

Study Overview
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Brief Summary
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A Randomized, open-label, multicenter study. The patients after 1-3 years NAs treatment and having achieved HBeAg loss and HBV DNA <200IU/ml will be switched to Pegasys for 48 or 96 weeks (with a 12 weeks period of overlap with the NA for safety reasons). The subjects will be randomized into 2 groups: Group 1 : 48-week standard treatment by Peginterferon alfa 2a 180µg/week Group 2 : 96-week prolonged treatment by Peginterferon alfa 2a 180µg/week. All the patients will be followed up for 48 weeks after discontinuation of the study medication. Note: NAs will be stratified LAM, ETV and ADV, with the ratio 1:1:1.

Detailed Description
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eligibility criteria: Men and women old of 18 to 65 years with chronic hepatitis B HBeAg positive treated with nucleoside and/or nucleotide analogues for 1-2 years and with partial response (HBeAg loss and HBV DNA <1000copies/ml).

Official Title
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A Randomized, Multicenter Study Evaluating HBsAg Clearance in CHB Patients Achieving HBeAg Loss and HBV DNA <200copies/ml on Treatment With Nucleotide Analogues and Switched to Peginterferon Alfa-2a

Conditions
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Chronic Hepatitis B

Intervention / Treatment
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* Drug: Peginterferon alfa 2a


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Patients on-treatment with NAs (ADV, ETV or LAM) for 1-3 years, having achieved HBeAg loss at screening, and HBV DNA <200IU/ml for at least 48 weeks Male and female patients ≥ 18 to 65 years of age Chronic hepatitis B (positive HBsAg for at least 6 months prior to NA therapy start) Compensated liver disease (Child-Pugh <6) Absence of hepatocellular carcinoma on liver imaging and/or alfa fetoprotein < 50 ng/ml Negative urine or blood pregnancy test for women of childbearing potential within 24 hours of first PEG IFN study medication administration Able and willing to provide informed consent and abide by the requirements of the study Exclusion Criteria: Neutrophil count <1.5 x 109cells/L or platelet count <90 x 109cells/L Co-infections with HIV, HAV, HCV, HDV or HEV Women with ongoing pregnancy or breast feeding, or wishing to become pregnant during the study period Prolonged and excessive alcohol intake (> 40g/day for men and > 30g/day for women) Active intravenous drug abuse History or current treatment with telbivudine Treatment with immunomodulators (e.g. Interferon) for less than one year before study enrollment Treatment with immunosuppressors (including systemic corticosteroids) or anti-neoplastic treatment (including radiation therapy) <=6 months prior to the first dose of study drug or the expectation that such treatment will be needed at any time during the study Serum concentrations of ceruloplasmin or alfa-antitrypsin consistent with an increased risk of metabolic disease History or other evidence of chronic pulmonary disease associated with functional limitation History of severe cardiac disease History of the severe seizure disorder or current anticonvulsivant use History of thyroid disease poorly controlled on prescribed medications. Patients with elevated thyroid stimulating hormone concentrations with elevation of antibodies to thyroid peroxidase and any clinical manifestations of thyroid disease History or other evidence of severe retinopathy History of autoimmune disease or presence of a significant level of auto-antibodies Renal insufficiency (creatinine clearance of < 50 ml/min according to the Cockroft and Gault equation), kidney transplant, hemodialysis History of depression or uncontrolled psychiatric disorders Subjects protected by law or not in a position to give consent Patients with reproductive potential not willing to use an effective method of contraception. Evidence of an active or suspected cancer or a history of malignancy (other than basocellular carcinoma or in-situ cervical carcinoma)

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: 48-week standard treatment<br>48-week standard treatment by Peginterferon alfa 2a 180µg/week | Drug: Peginterferon alfa 2a<br>* Group 1 : 48-week standard treatment by Peginterferon alfa 2a 180µg/week Group 2 : 96-week prolonged treatment by Peginterferon alfa 2a 180µg/week.<br>|
| Active Comparator: 96-week prolonged treatment<br>96-week prolonged treatment by Peginterferon alfa 2a 180µg/week | Drug: Peginterferon alfa 2a<br>* Group 1 : 48-week standard treatment by Peginterferon alfa 2a 180µg/week Group 2 : 96-week prolonged treatment by Peginterferon alfa 2a 180µg/week.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| determine the response rate (HBsAg clearance at Week 48 and 96) | To determine the response rate (HBsAg clearance at Week 48 and 96) in subjects who are being treated by NAs and achieved a combined response which consists of both HBeAg loss and HBV DNA <1000 copies/ml | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| HBsAg/HBeAg/HBV DNA changes/ALT normalization /HBsAg seroconversion at EOT and EOF | HBsAg loss at EOF Quantitative HBe/sAg reduction at every check point. HBeAg seroconversion at EOT and EOF HBV DNA changes over 48 or 96 weeks at every check points ALT normalization at EOT and EOF HBsAg seroconversion at EOT and EOF | 1 year | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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nucleoside, peginterferon alfa-2a