Active clinical trials for "Hepatitis B, Chronic"

This research study is being conducted to compare the safety and effectiveness of the investigational medication, LdT (telbivudine) versus adefovir dipivoxil, a drug approved by the Food and Drug Administration (FDA) for the treatment of hepatitis B infection. The results for patients taking LdT will be compared to results for patients taking adefovir dipivoxil.

The "Chinese PAC" study (CLDT600ACN03) will evaluate the efficacy and safety of open label telbivudine in 2,200 compensated Chronic Hepatitis B (CHB) adults. The primary objective of the study is the proportion of patients achieving undetectable HBV DNA at week 52.

The primary purpose of the study is to evaluate the effectiveness, safety, and tolerability of tenofovir disoproxil fumarate (TDF) in adolescents (aged 12-17 years) with chronic hepatitis B virus (HBV) infection. The optimal treatment for adolescents with chronic HBV infection is currently unknown. Treatment with interferon alfa, lamivudine, and adefovir dipivoxil in pediatric populations has been shown to be less than optimal. Further, the safety and efficacy of entecavir and telbivudine have not been established in patients < 16 years of age. A study evaluating TDF in adolescents (ages 12-17) was needed to assess the safety and efficacy of this agent in the treatment of chronic hepatitis B in this patient population. In addition, the study will help to further elucidate the pharmacokinetic (PK) and resistance profiles of TDF. Through their participation, study participants will help generate critical new information to help guide the most optimal treatment of chronic HBV infection in adolescents. This is a randomized, double-blind study to evaluate the antiviral efficacy, safety, and tolerability of TDF versus placebo in adolescents with chronic HBV infection. TDF treatment-naive participants were randomized in a 1:1 ratio to TDF or placebo. After 72 weeks of blinded treatment, participants were to switch to open-label TDF for an additional 2.5 years of treatment, provided that no safety concerns are identified by the Independent Data Monitoring Committee monitoring the study.

This is an open label, single-arm, multi-centre extension study for Korean patients with chronic hepatitis B and compensated liver disease who have completed one-year adefovir dipivoxil treatment in ADF103814. The objective is to assess clinical efficacy and safety of long term (up to 3 years) adefovir dipivoxil 10mg therapy.

The purpose of this clinical research study is to assess the safety effectiveness of entecavir, as compared to lamivudine, in the treatment of adults with chronic hepatitis B infection who are hepatitis B e antigen positive.

Chronic hepatitis B is a disease of the liver caused by the hepatitis B virus. It affects nearly 1 million Americans. Approximately 25% of patients with chronic hepatitis B will develop liver cirrhosis and 5% of patients will develop liver cancer. Presently, two medications have been shown effective in the treatment of hepatitis B: lamivudine and alpha interferon. Alpha interferon (an antiviral drug that acts through the immune system) is given by injection once daily or three times a week for four to six months. Lamivudine (also known as 3-thiacytidine: 3TC) is an antiviral medication given as a pill once a day for twelve months. These treatments have been known to provide long-term improvement in one third of patients receiving them. In previous research, the drug lamivudine was shown to stop the growth of the hepatitis B virus and to lead marked decreases in the levels of hepatitis B virus and to improvements in the disease in 50 to 70% of patients. However, once lamivudine therapy was discontinued the virus returned to levels noted before the therapy began. In those studies lamivudine was given for 3 to 12 months then discontinued. This study will investigate the safety and effectiveness of long-term therapy with lamivudine. This study will select 60 patients diagnosed with hepatitis B. After a thorough medical examination and liver biopsy, subjects will be given lamivudine. The drug will be taken by mouth in tablet form (100 mg) once a day for up to 5 years. Subjects will undergo regular check-ups and after 1 year of therapy be admitted to the Clinical Center for another medical examination and liver biopsy to assess progress. Patients who have benefitted from the therapy will continue taking the medication for up to 5 years. A third liver biopsy will be done during the last year of treatment. The effectiveness of lamivudine will be determined by whether levels of hepatitis B virus decrease in the blood, whether liver enzymes improve, and whether inflammation and scarring decreases in the liver biopsies.

The changes in liver function, body mass index, controlled attenuation parameters, liver stiffness and HBV-DNA at different time points in each group before and after treatment were counted to explore the clinical efficacy of Ganshuang granules combined with tenofovir in the treatment of CHB complicated with NAFLD.

The investigator aimed to prospectively study the effect of the hepatic fibrosis on quantifying hepatic steatosis using ultrasound attenuation imaging (ATI value) in patients with chronic hepatitis B.

Establishment and validation of the non-invasive model to predict antiviral therapy in the gray zone of chronic hepatitis B

To explore the effective dose and safety of the effect of hydronidone and entecavir on hepatic fibrosis in chronic viral hepatitis B.