View clinical trials related to Hepatitis B, Chronic.
Filter by:This phase 4 study is designed for the collection of blood biomarker samples from patients who have completed chronic hepatitis B treatment with at least 25 weeks of a Pegasys (peginterferon alfa 2a) containing regimen and at least 24 weeks post-treatment follow-up. Patients may be enrolled from historical studies supported or sponsored by Roche, ongoing studies supported or sponsored by Roche or from general medical practice. The follow-up of patients who choose to participate in this study will be in accordance with the ongoing studies or with the general medical practice of the physician. Data from whole blood DNA samples collected in the GV28555 study or available from previously collected Roche Clinical Repository (RCR) samples will be used for combined analysis with data from other applicable studies. Procedures will include blood sample collection (not applicable for patients who previously have consented and donated RCR DNA samples) and medical record capture.
In Taiwan, 15% of general population had hepatitis B virus (HBV) infection, HBV is the leading cause of liver cirrhosis and hepatocellular carcinoma in Taiwan. After entering immune clearance, 10-30% of patients of chronic HBV develop acute exacerbation (AE) , some are mild but some developed hepatic decompensation or even death. Previous study found that early use of lamivudine before bilirubin level is above 20 mg/dl can improve survival in chornic HBV with severe AE. From the study from Hongkong, lamivudine was found to have better survival than entecavir in chronic HBV with severe AE. Recent study from India found that tenofovir is able to improve survival in chronic HBV with severe AE. The aim of this study is to compare the effect of lamivudine and tenofovir for chronic HBV with severe AE. The study aims to enroll 120 patients with chronic HBV defined as persistence of HBsAg for more than 6 months. Severe AE was defined as ALT > 400 U/L, prolongation of prothrombin time > 3 seconds, bilirubin > 2 mg/dl. Patients with hepatitis A, C, D or HIV infection, drug or alcoholic liver disease, hepatocellular carcinoma, under immuno-suppressive agents use, or previous use of anti-HBV agents are excluded. All enrolled patients are randomized into group A who received tenofovir 300 mg qd for 3 years and group B who received lamivuidne 100 mg qd for 6 months, followed by tenofovir 300mg qd for 30 months. Mortality rate and virological, biochemical and serological response were evaluated at 1,2,4,48,96 and 144 weeks. The values are expressed as mean + SD. Categorical variables were analyzed with Chi-square test or Fisher's exact test as appropriate and continuous variables were analyzed by Mann-Whitney test. Logistic regression test was applied to analyze the independent association of various variables with outcome. A p value < 0.05 was regarded as significant.
The purpose of this study is to evaluate the long-term efficacy and safety of entecavir 0.5 mg/d + adefovir 10 mg/d for treatment experienced chronic hepatitis B patients.
Entecavir (ETV) has shown superior ability to suppress hepatitis B virus (HBV) replication, histology improvement as well as low rate of emergence of resistant mutants. Out of range of clinical recommendations for treatment of chronic hepatitis B (CHB), chronic HBV carriers with persistently normal ALT and viral load more than 10^5 copies/mL have progression of liver disease during long-term follow-up. In addition, certain proportions of these patients do have significant inflammation and fibrosis in liver histology. This study will be able to identify who are at risk of liver disease progression and evaluate efficacy of ETV regarding improvement of liver histology during short-term (1-year) and long-term ETV treatment (3-year).
This study aims to demonstrate that patients with chronic hepatitis C (CHC) and B (CHB) experiencing regression of liver cirrhosis after effective antiviral therapy have decreased risk for hepatocellular carcinoma (HCC). Primary aim is to determine the incidence of HCC in patients with cirrhosis secondary to CHC and CHB, after treatment is provided, and to identify the magnitude of the decreased risk for HCC in patients experiencing regression of fibrosis. As a secondary aim, environmental risk factors for HCC development will be sought, in order to determine a subset of patients in whom it will be safe to stop surveillance.
The purpose of this study is to compare the long-term efficacy and safety of entecavir 1.0 mg/d + adefovir 10 mg/d with entecavir 0.5 mg/d + adefovir 10 mg/d for chronic hepatitis B patients with inadequate response to NUC therapy
This study was to predict 3-month mortality risk of acute-on-chronic hepatitis B liver failure (ACHBLF) on an individual patient level using artificial neural network (ANN) system. The area under the curve of receiver operating characteristic (AUROC) were calculated for ANN and MELD-based scoring systems to evaluate the performances of the ANN prediction.
Background: - There are two forms of chronic hepatitis B. The difference between the forms is whether or not a viral protein called hepatitis B e antigen is present in the blood. Standard approaches to treating both forms of chronic hepatitis B involve different drugs. One drug is called peginterferon, another is called tenofovir DF. These drugs are often given separately and used for different forms of the disease. However, researchers want to see if combining peginterferon and tenofovir DF will be a more effective treatment than tenofovir DF alone. Objectives: - To see whether combining tenofovir DF and peginterferon, or using tenofovir DF alone, is a more effective treatment of chronic hepatitis B. Eligibility: - Individuals at least 18 years of age who have chronic hepatitis B and are in the Hepatitis B Research Network Cohort study. Design: - Participants will be screened with a physical exam and medical history. Blood, urine, and liver tissue samples will be collected. Bone and liver imaging studies will also be performed. - Participants will be divided into two groups. One group will have tenofovir DF alone for 192 weeks (about 4 years). The other group will have tenofovir DF and peginterferon for 24 weeks (about 6 months), and then tenofovir DF alone for 168 weeks (about 3.5 years). - Participants will take the study drugs on the schedule determined by their study doctors. They will keep a diary to record their doses and any side effects. - Participants will have three study visits 4 weeks apart after the starting the treatment. At these visits, they will have a physical exam and provide blood samples. They may also provide urine samples and have imaging studies. - After the first three study visits, participants will continue to have study visits every 12 weeks until the treatment ends at week 192. These visits will have many of the same tests as the first three visits. At some of these visits, they may fill out questionnaires about their quality of life. - Participants who do not respond to the study drugs may have their medications changed. They may also be asked to stop treatment.
Background: The HBsAg clearance rate in interferon-treated responders is significantly higher than that in lamivudine-treated responders, implying immune control is the key to HBsAg clearance. There is a good chance to further increase the cure rate if the investigators can enhance the HBV-specific immune response when the HBsAg level already comes to a low level. Hypothesis: HBsAg-based vaccine can enhance HBsAg clearance in chronic hepatitis B patients whose HBsAg already <=2000 IU/ml. Patients and methods: This pilot study will enroll 20 chronic hepatitis B patients with HBsAg ≦2000 IU/ml, no hepatic decompensation, no HIV coinfection, nor clinical immunodeficiency. Engerix-B vaccine (20μg for <20 years old and 40 μg for ≥ 20 years old) will be given every 2 months for one year. HBsAg quantification, anti-HBs, and HBV DNA will be surveyed regularly before each dose during the treatment period and every 3 months for another year following the last dose. Viral and cellular factors will be studied to discover determinants affecting HBsAg clearance. Aims 1. To elucidate whether HBsAg-based vaccine can reactivate host immunity to eliminate chronic HBV infection in patients with low titer HBsAg. 2. To delineate the doses to response (HBsAg clearance or decline rate) correlation so as to design a feasible schedule for future clinical trials in a larger group of patients. 3. To discover viral and host factors which can be used as biomarkers for personalized vaccine therapy.
The purpose of this study is to examine the immunogenicity and efficacy of HBsAg Vaccine in combination with Entecavir in patients who have been treated with HB110E HBV DNA vaccine.