Active clinical trials for "Hepatitis B, Chronic"

Although the best treatment choice for chronic hepatitis B is not clarified yet, certain therapeutic concepts could be derived from the experience of treating patients with chronic hepatitis C or human immunodeficiency virus (HIV) infection. A major advancement in treating hepatitis C or HIV infection has been the development of combination therapy. Whether the combination therapy using Peg-IFN alfa-2a plus ETV can achieve a long-term beneficial effect against ETV alone is not clarified. A prior single-arm pilot study suggested that similar combination therapy may be beneficial in patients with chronic hepatitis B. In this proposal, we thus hypothesize that the efficacy by using combination therapy with pegylated IFN alfa-2a plus ETV is superior to that by using ETV alone in that Peg-IFN may restore host immunity against HBV and prolonged ETV can maximize viral suppression. The objective of this clinical trial is to evaluate the efficacy of the combination of Peg-IFN alfa-2a at a dose of 180 mcg administered subcutaneously per week and ETV 0.5 mg daily for 24 weeks followed by ETV 0.5 mg daily monotherapy for an additional 120 weeks versus ETV 0.5 mg daily monotherapy for 144 weeks in patients with HBeAg-positive chronic hepatitis B. It will be an open-label, randomized, comparative, multi-center clinical trial. The recruited patients will be equally randomized into two treatment groups. Treatment-free follow-up period will be 48 weeks in both groups of patients. All subjects will be assessed for loss of HBeAg, presence of anti-HBe, loss of HBsAg, presence of anti-HBs, suppression of HBV DNA, and normalization of serum ALT at the end of treatment and end of follow-up. Genotypic and virologic resistance to ETV will also be assessed at baseline and at end of years 1, 2 and 3. The primary efficacy will be HBeAg seroconversion.

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.

Most patients with Chronic Hepatitis B are on nucleoside analogy (NA) long term, but this leads to HBsAg loss (defined as functional cure) of only 2% at 6 years. Recently a number of studies have shown significant HBsAg loss rates after stopping nucleoside analogues (NA). However, no criteria to select such patients have been evaluated. Consequently, the objective of the study is not only to determine the proportion of patients able to achieve HBsAg loss in those with qHBsAg≤100IU/ml. The study is designed as a randomised control trial with 1:2 parallel arm randomisation to continuing NA or stopping therapy. Patients will be monitored after stopping therapy for Hepatitis B flares and also to document HBsAg loss.

The objective of this study is to identify immunological mechanisms that contribute to normalization of liver inflammation in chronic hepatitis B (CHB) patients starting the antiviral nucleoside analogue, Tenofovir alafenamide (TAF).

A Study to Investigate the Safety, Tolerability, Pharmacokinetics of Single and Multiple Doses of Hepenofovir Fumarate Tablets in Healthy Volunteers

HBeAg-negative chronic hepatitis B (CHB) patients with low Level HBsAg were enrolled. After giving informed consent, patients were treated with nucleoside analog(s) (NAs) once a day and weekly subcutaneous injections of peginterferon alfa-2a 180 micrograms/week or peginterferon alfa-2b 180 micrograms/week for 12 weeks. At week 12, the decrease of HBsAg was evaluated. ①If the decrease of HBsAg is more than 50% compared to baseline level. NAs was stopped, patients were treated with weekly subcutaneous injections of alfa-2a 180 micrograms/week or peginterferon alfa-2b 180 micrograms/week. Treatment endpoint was HBsAg loss(<0.05 IU/ mL). Depending on the decline of HBsAg level, treatment was either continued for a prolonged period (no more than 96 weeks) until the endpoint was achieved, or terminated in week 96. After treatment, all patients were followed up for 48 weeks. ②If the decrease of HBsAg is less than 50% compared to baseline level. The combination therapy of NAs and peginterferon alfa was extended to week 24. Then, the decrease of HBsAg was evaluated again. If the decrease of HBsAg is more than 50% compared to baseline level. NAs was stopped, patients were treated with weekly subcutaneous injections of alfa-2a 180 micrograms/week or peginterferon alfa-2b 180 micrograms/week. Treatment endpoint was HBsAg loss(<0.05 IU/mL). Depending on the decline of HBsAg level, treatment was either continued for a prolonged period (no more than 96 weeks) until the endpoint was achieved, or terminated in week 96. After treatment, all patients were followed up for 48 weeks. If the decrease of HBsAg is less than 50% compared to baseline level. Peginterferon alfa was stopped, patients were treated with NAs once a day and then followed up for 48 weeks. Patients who maintained the original NAs treatment served as a control group.

There are chronic hepatitis B patients with poor antiviral efficacy of entecavir in clinical practice. Tenofovir or interferon alfa is the optimal choice right now. The aim of this study is to investigate the therapeutic effect of using tenofovir of interferon alfa in these patients.

This study evaluates the addition of glycyrrhizin to entecavir in the treatment of patients with chronic hepatitis B in China. Half of participants will receive magnesium isoglycyrrhizinate followed by oral diammonium glycyrrhizinate and entecavir in combination, while the other half will receive a placebo and entecavir.

Pegylated interferon α-2a(Peg-IFN-α) not only inhibit viral replication, but also play an important role in immune regulation, while Nucleoside analog(ue) drugs only inhibit viral replication. In hepatitis B infection, Treg cells Regulatory T cells played a negative role in immune. This study was aimed at investigating the changes of Treg cells frequency and function, and the expression of costimulatory molecules during Peg-IFN-αand nucleoside analog(ue) therapy.Meanwhile, the investigators wanted to verify whether Peg-IFN-α suppressed the virus, which led to the decline of Treg cells frequency and function;negative regulation of Tregs for immune cells diminished, hence, the function of immune cells recovered.

HBeAg-negative chronic hepatitis B (CHB) patients with low Level HBsAg and with a history of drug resistance or suboptimal/partial virological response were enrolled. After giving informed consent, patients were treated with nucleoside analog(s) (NAs) once a day and weekly subcutaneous injections of alfa-2a 180 micrograms/week or peginterferon alfa-2b 80 micrograms/week for 12 weeks. 12 weeks later, NAs was stopped, patients were treated with weekly subcutaneous injections of alfa-2a 180 micrograms/week or peginterferon alfa-2b 80 micrograms/week. Treatment endpoint was HBsAg loss(<0.05 IU/mL).