Active clinical trials for "Hepatitis B"

The present study is conducted in order to assess the acceptability of Hepatitis B vaccination in French general practitioners and peadiatricians before and after reimbursement of the paediatric vaccine InfanrixHexa. Two data measurement time points are planned, first before reimbursement and after reimbursement.

The aim of study is to describe the clinical, immunological, serological, virological and therapeutic characteristics of HIV+ patients harboring isolated anti-HBc profile and to assess the response to vaccination in these patients.

This non-interventional clinical study will be conducted to prospectively collect serial plasma samples from subjects with chronic HBV infection who are initiating antiviral therapy. These samples will be used to estimate clinical utility endpoints for the Aptima HBV Quant assay, which is used as an aid in the management of HBV-infected patients undergoing HBV antiviral therapy.

An exploratory clinical trial to evaluate the pharmacokinetic characteristics of I.V. Hepabig injection used for prevention of hepatitis B relapse after liver transplantation.

Antiviral prophylaxis can prevent the risk of biologic agents-associated HBV reactivation in hepatitis B inactive carriers and patients with past HBV infection

Liver fibrosis is an important public health problem, with a substantial morbidity and mortality due to progression to cirrhosis and hepatocellular carcinoma. All causes of chronic liver disease may lead to fibrosis. The traditional diagnostic approach requires a biopsy for assessing the severity of liver disease prior to therapy. However, liver biopsy has several limitations: cost, sampling error, and procedure-related morbidity and mortality. Considering the high prevalence of viral hepatitis and nonalcoholic fatty liver disease, a condition often associated with obesity and type 2 diabetes, there is an urgent need for noninvasive screening, diagnosis and monitoring strategies of chronic liver disease severity. Our team has the expertise to investigate ultrasound-based and magnetic resonance-based elastographic methods for the noninvasive staging of liver fibrosis. The primary objective of this cross-sectional study is to compare the sensitivity of elastographic methods for detecting histology-determined significant fibrosis. The secondary objectives are to compare the diagnostic accuracy of these elastographic methods and the influence of potential confounders (inflammation, steatosis and iron deposition) on their diagnostic accuracy.

The purpose of this early access protocol is to provide access to adefovir dipivoxil prior to its commercial availability to people with lamivudine-resistant chronic hepatitis B who have limited treatment options.

Transcatheter arterial chemoembolization (TACE) is the traditional method for the palliative management of patients with hepatocellular carcinoma (HCC). Few previous studies had demonstrated that the serum level of anticancer drug from patients treated by TACE was similar to those treated by systemic chemotherapy. Since systemic chemotherapy may have the possibility to influence patient's general defense ability, hepatitis B virus may reactivate after chemotherapy.This study is to investigate the possibility of TACE in the reactivation of hepatitis B virus.

This study will determine the amount of liver scarring (fibrosis) or liver damage in people infected with 1) hepatitis B virus (HBV, a virus that can infect the liver); 2) HIV (the virus that causes AIDS); 3) both HBV and HIV; and 4) neither HBV nor HIV. Liver fibrosis and liver damage can have many causes, including alcohol, certain medicines, exposure to some contaminated foods and infections with viruses that affect the liver (such as HBV). About 25 million people in sub-Saharan Africa are infected with HIV and about 50 million with chronic HBV, yet very little information is available on how many people are infected with both viruses and the medical implications of co-infection. Participants in Uganda s Rakai Health Sciences Program (RHSP) or Infectious Diseases Institute (IDI) clinic who are 18 years of age or older may be eligible for this study. People enrolled in the study come to the clinic for at least one visit and may be asked to return yearly. During the visit, participants undergo the following procedures: Questionnaire and a short interview about their health and quality of life. Physical examination and blood draw. The blood is tested for HBV and other factors that may suggest liver disease. Blood drawn at previous clinic visits or from other studies may also be tested. Liver evaluation using a FibroScan, a medical device that uses elastic waves to measure liver stiffness in a process similar to ultrasound scanning. For this test, the subjects lies flat on the back with the arm extended out. The tip of the machine s probe is covered with gel and placed on the skin between the ribs at the level of the right lobe of the liver. The machine produces a little tap on the skin that sends a wave out and checks how fast the wave moves. The speed of the wave indicates the amount of scarring in the liver.

The aim of this study is to prove usefulness of contrast-enhanced ultrasound (CE-US) using Sonazoid (TM) in the early detection of HCC as compared with conventional B-mode ultrasound (B-mode US) for hepatitis virus related cirrhosis, who are defined as super high-risk patients for hepatocarcinogenesis,Furthermore, to analyze whether early detection of HCC by CE-US has a survival benefit than that by B-mode US.