Sustained Viral Response in Patients Achieved HBsAg Level≤100 IU/ml After Completed Interferon Treatment

Study Overview
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Brief Summary
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Chronic hepatitis B (CHB) is a serious liver disease worldwide, and the leading cause of cirrhosis and hepatocellular carcinoma (HCC). HBsAg loss/seroconversion is considered to be the ideal endpoint of antiviral therapy in both HBeAg-positive and -negative patients, and the ultimate treatment goal in CHB, However HBsAg loss occurred rarely by interferon treatment. Although It was reported that in nature history HBsAg level≤100 IU/ml can bring good long term outcomes in patients with chronic hepatitis B. it was not clear whether patients who achieved HBsAg level≤100 IU/ml by interferon treatment could maintain sustained viral response and the state of HBsAg level≤100 IU/ml.

Detailed Description
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The patients with chronic hepatitis B and achieved HBsAg level≤100 IU/ml after completed interferon treatment will be enrolled and observed for 96 weeks. Serum HBV DNA, HBsAg, anti-HBs, HBeAg, and anti-HBe will be measured every 3 months during the observation period, liver function tests were performed every 3 months also. The liver ultrasonic examination would be taken every 3-6 months. The primary endpoint is HBV DNA reaction. The secondary endpoints is HBsAg loss.

Official Title
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Sustained Viral Response and HBsAg Level Changes in Chronic Hepatitis B Patients Who Achieved HBsAg Level≤100 IU/ml After Completed Interferon Therapy

Conditions
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Chronic Hepatitis B

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients who had chronic hepatitis B and achieved HBsAg level≤100 IU/ml with undetectable HBV DNA level by interferon treatment Exclusion Criteria: Active consumption of alcohol and/or drugs Co-infection with human immunodeficiency virus, hepatitis C virus, or hepatitis D virus History of autoimmune hepatitis Psychiatric disease Evidence of neoplastic diseases of the liver
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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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the rate of sustained viral response | The serum HBV DNA will be tested every 3 month for 96 weeks after completed treatment in chronic hepatitis B patients who achieved serum HBsAg level≤100 IU/ml with HBV DNA undetectable by interferon therapy. The rate of sustained viral response defined HBV DNA level maintaining undetectable during observation period will be evaluated, and HBV reaction is defined as serum HBV DNA reverse back to detectable level. | 96 weeks | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| the rate of HBsAg loss | The serum HBsAg level will be tested every 3 month after completed treatment. The rate of HBsAg loss defined as HBsAg level reached the value lower than the low limited value will be evaluated after 96 weeks follow-up. | 96 weeks | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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HBsAg loss, interferon, HBV reaction, Hepatitis B