View clinical trials related to Hepatitis B.
Filter by:This is a randomized, open label study evaluating the efficacy and safety of glucocorticoids in patients with HBV associated pre-ACLF. Sponsor: Department of infectious diseases, Southwest Hospital. Indication: HBV associated acute-on-chronic pre-liver failure(pre-ACLF-HBV). Objective: To evaluate the efficacy and safety of glucocorticoids in patients with pre-ACLF-HBV. Trial Design: Randomized, open label study. Patients with pre-ACLF-HBV will be randomized 1:1 to One of the two groups: A)Dexamethasone 10mg were intravenously injected po daily for the first 5 days, in combination with continued lamivudine 100mg po daily and traditional supporting treatments for 13 weeks. B)Control group. Any glucocorticoids will be not given in all patients. Continued lamivudine 100mg po daily and traditional supporting treatments will be given for 13 weeks. Number of patients: Approximate number of patients to be randomized: N=200 (100 patients in each group). Length of study: Screening period: 3 days; treatment period: 13 weeks. Duration of study: 30 months after first patient randomized, including an recruitment period of 26 months. Investigational treated regimen:Dexamethasone 10mg, iv, once day for 5 days. Concomitant and Comparative regimen: Lamivudine 100mg po daily, traditional supporting treatments. Assessments of Efficacy Primary endpoint: the survival rate at week 13. Secondary endpoint:①The levels of serum T-Bil ≤ 51.3µmol/L;②PTA ＞80%. Safety: Adverse events, vital signs, and laboratory tests. Procedures(summary): After signing informed consent and meeting screening parameters, patients will be randomized to one of the two treatment groups as described under trial design above. After randomization patients will be seen for evaluation at days 5,10,14,21,28,42,56,70,84,91. Statistical analysis: Assume 1:1 randomization. The sample size is calculated for the primary efficacy variable, the survival rate. Assuming the survival rate equals to: 90% for group A and 50% for group B. 100 patients in each group are required to yield a 80% chance of detecting such a difference when a two-tailed test is employed at the 0.05 significance levels. Every eligible subject will be assigned with a randomization code and receive one of the two treatments, according to the sequence of enrolled.
The aims of this study are to determine: 1. the degree of immunity against hepatitis B, 2. factors associated with immunity against hepatitis B, 3. if the amount of antigen provided in a booster dose (used to measure the degree of immune memory) affects the body's response to the booster, and 4. if the age at which the vaccination was initiated during infancy affects duration of protection against hepatitis B among adolescents 16-19 years of age born in the United States who were immunized against hepatitis B as infants. These data will be important to evaluate the potential need for a possible booster dose of hepatitis B vaccine among adolescents. Study subjects eligible for enrollment will: - have blood drawn for baseline serologies - receive the hepatitis B booster dose (randomly determined to be either a 10 ug or 20 ug dose) - have blood drawn again 14 days later to determine if the booster dose has engendered an anamnestic response (a response attributed to prior immunity rather than a new response to the vaccine) The primary hypothesis is that the majority of young people will exhibit immune memory for hepatitis B in response to a booster dose of vaccine.
Since the implementation of universal vaccination in 1984, the chronic HBV carier rate in our general population reduced from 15-20%, down to < 1% in the post-vaccination population. However, children born to HBeAg positive mothers still may be infected with HBV despite immunization. To further reducing the HBV infection in our people, strategies in reducing infection rate in this high risk group are mandatory. Previous small scale studies using lamivudine treatment in pregnant woman in the third trimester has proved effective in reducing children infection rate. The aims of the present study are to conduct a clinical trial in using Tenofovir (category B) to reduce mother-to-infant transmission, and to monitor the hepaitits B viral status and mother hepatitis occurrence. The clinical trials will screen cases of HBsAg positive pregnant women aged 20 to 40 years at gestational at 20-32 weeks. They will be tested for HBsAg and HBeAg. In whom both markers are positive, HBV viral load will be tested. An estimated 180 pregnant women with high HBV viral load (>10^8 copies/mL) will be recruited in the study; including 80-100 subjects treated with Tenofovir 300 mg daily starting from 30-32 weeks of gestation (3rd trimester) and continued to 1 month after delivery; and 80-100 pregnant women are enrolled as controls with no drug given to the mother. The newborn babies are given with HBIG within 24 hours after delivery, and HBV vaccines at 0, 1 and 6 months. Maternal complete blood count (CBC) data tested in the first prenatal examination will be recorded. Plasma AST、ALT levels and HBV DNA are tested before Tenofovir treatment, 1 month after treatment, at the time of delivery, and at 1, 2, 4 and 6 months after delivery. HBsAg、HBeAg、anti-HBs and AST、ALT are tested in the children at day 1, 6 moths and 1 year after birth. The primary outcome is reduction of the HBsAg carrier rate of the children at 6 months of age. The secondary outcome is HBsAg carrier rate of the children at 12 months of age, the change of liver function, HBeAg, and viral load in pregnant mother after treatment. A follow-up study for investigating safety of mothers and children that has been exposed to maternal tenofovir disoproxil fumarate (TDF) during pregnancy in reducing mother-to-infant hepatitis B virus (HBV) transmissions is conducted. The follow-up study included mother-children pairs 2-4 years after delivery of the children.
Background: - Chronic hepatitis B virus infection is a leading cause of morbidity and mortality from end stage liver disease and liver cancer. Although significant progress has been made recently in hepatitis B therapy, current knowledge about how to manage the infection is limited because most treatment trials involve 1 to 2 years of therapy at most, even though most patients require treatment of much longer duration for optimal long-term outcome. To improve current knowledge on the disease and long-term disease progression, the Hepatitis B Research Network is collecting health and disease information from individuals who have been diagnosed with hepatitis B. Objectives: - To study individuals with hepatitis B and identify factors that affect the way the disease progresses. Eligibility: - Individuals at least 18 years of age who have been diagnosed with hepatitis B. Design: - Participants will be screened with a physical examination and medical history. Health information will be collected through questionnaires and surveys on health behaviors, and family history of liver disease. Participants will also provide blood samples, and those who have had a liver biopsy within the past 2 years or have one during the course of the study will provide biopsy material for further study. - Information will be collected during a series of study visits. Each visit will take approximately 1 hour. During the first year, participants will have study visits 12 weeks, 24 weeks, and 48 weeks after entering the study. In subsequent years, participants will have a study visit approximately every 24 weeks (6 months) until the end of the study. - Additional visits will be required of women who are pregnant when enrolled in the study or become pregnant during the course of the study. - Participants whose hepatitis B status changes during the course of the study (for example, a flare of disease activity) may be asked to return for more frequent visits.
The purposes of this study include 1) to compare the seroconversion rate of an intensive standard-dose regimen (0, 1, 2 and 6 months) to a standard-dose regimen (0,1 and 6 months), and 2) to compare the seroconversion rate of an intensive double-dose regimen (40 μg at 0,1,2 and 6 months) to a standard-dose regimen (20 μg at 0,1 and 6 months) of HBV vaccine in HIV-infected adult patients.
No study has reported on the comparative effect of continuing lamivudine plus adefovir versus switching to telbivudine plus adefovir in HBeAg-positive lamivudine-refractory chronic hepatitis B patients who have suboptimal response to lamivudine plus adefovir. The goal of this study is to compare the efficacy of continuing lamivudine plus adefovir versus switching to telbivudine plus adefovir directly in patients with lamivudine-refractory chronic hepatitis B patients who have suboptimal response to lamivudine plus adefovir for at least 12 months.
The outcome of treatment of chronic hepatitis B is determined by viral and host interaction, thus the combination therapy of immunomodulator (PEG-IFN) and potent antiviral drug (entecavir) should improve the response rate. In addition, the simultaneous assessment of viral and host genetic factors associated with SVR may help to identify predictors of treatment outcomes, which will in turn significant reduce the cost/effect of therapy
Evaluate the safety and efficacy of Peginterferon alfa-2a following Entecavir compared with Peginterferon alfa-2a monotherapy in patient with HBeAg positive chronic hepatitis B. - Increased HBeAg seroconversion rate - Increased HBsAg loss rate - To define the best treatment condition for chronic HBV hepatitis patients
To investigate the influence of hepatic steatosis on the anti-viral effect of entecavir in chronic hepatitis B patients.
Entecavir demonstrated superior virologic and biochemical benefits over lamivudine and adefovir. The investigators evaluated the effect of entecavir combined Hepatitis B immune globulin (HBIG) with lamivudine or adefovir or both combined HBIG in Chinese liver transplantation patients with Hepatitis B Virus (HBV) related diseases.