Active clinical trials for "Hepatitis, Chronic"

Pegylated-interferon (Peg-IFN) α-2a, entecavir (ETV) and tenofovir disoproxil fumarate (TDF) are current recommended first-line antiviral therapies for chronic hepatitis B (CHB). Compared with Peg-IFN therapy, nucleot(s)ide analogue (NUC) therapy has the advantages of having a potent antiviral effect, and good tolerance without side effect. The long-term safety and efficacy of ETV and TDF therapy had also been identified. However, poor durability of the effectiveness after stopping NUC therapy are encountered in the majority of patients. Previous study identified a high HBV relapse rate of over 50% in HBeAg- positive CHB patients treated with lamivudine. A recent study investigating the post-treatment durability of ETV showed that higher to 45.3% of the HBeAg-negative CHB patients happened a clinical relapse within 1-year after stopping ETV therapy. TDF is another recommended first line NUC with high potency and high genetic barrier. Although the efficacy of long-term TDF therapy had been identified, there is lack of data regarding the off-therapy response in CHB patients with TDF therapy currently. Only a small scale of patients treated with TDF were included in a recent study investigating off-therapy relapse in non-cirrhotic HBeAg-negative CHB patients after greater than 4 years of NUC therapy. In addition, the factors associated with off-therapy response are also still uncertain. The investigators plan to enrolled 400 CHB patients who had received oral antiviral therapy ETV or TDF and achieved the Asia Pacific association of the study of liver (APASL) criteria of stopping NUC therapy. The aims of the study are to investigate the rate of HBV relapse including virological and clinical relapse in all and between patients with ETV and TDF therapy, and to identify the predictive factors of relapse.

This study is a multi-center, prospective, real-world study, males and non-pregnant, non-lactating female HBeAg positive or negative patients (above 18 years of age) who were mono-infected with HBV, either NA treatment-naïve or treatment-experienced, but TAF naïve will be enrolled in this study, and they will be treated with TAF, alone or in combination with other HBV antivirals. During 36 months of treatment, efficacy and safety will be evaluated.

Chronic hepatitis B (CHB) is a serious liver disease worldwide，HBV MTCT is the important reason to keep high prevalence of chronic HBV infection in China. Intrapartum infection is the main period of neonatal HBV infection. Injecting HBIG and hepatitis b vaccine immediately after birth is the most important method of blocking mother-to-child transmission of HBV. However, regular doses of HBIG combined with hepatitis b vaccine blocking measures still have a failure rate as high as 5% ~ 15%.There are numerous studies to explore pregnancy women with HBV positive, especially high viral load of those women during pregnancy being treated with nucleoside analogs to increase the blocking rate of HBV MTCT, but there is still a failure rate of 2.2% to 18%. In this study, we will explore the efficiency of personalized blocking method of HBV maternal-neonatal transmission in high-risk newborns,according to the venous blood HBsAg state of neonatus at birth.

This is a multicenter, prospective cohort study to evaluate the efficacy and safety of sequential combination or switch therapy of pegylated interferon alfa-2a in chronic hepatitis B patients with low HBsAg and HBeAg titers after long-term entecavir therapy, and compared to those who continued on ETV therapy.

Chronic hepatitis B (CHB) is a serious liver disease worldwide, and the leading cause of cirrhosis and hepatocellular carcinoma (HCC). HBeAg seroconversion is considered to be the satisfied endpoint of antiviral therapy in HBeAg-positive chronic hepatitis B patients. However, HBV reaction, even reverse back to HBeAg positive and clinical relapse could occur in some patients who achieved HBeAg seronconversion by interferon treatment. In this study, the long-term efficacy of interferon therapy in HBeAg positive patients achieved HBeAg seronconversion after interferon treatment and the factors associated with viral and clinical relapse will be observed.

The most important method to slow down and stop the liver disease progression in patients with chronic hepatitis B is antiviral therapy, by which to achieve maintaining viral response during treatment or obtain sustained viral response after treatment. The aim of the therapy with interferon is make patients obtain immune control to HBV defined as sustained viral response after treatment, however, most patients can't get this target after 48 weeks of interferon treatment, and some patients need extended treatment in clinical practice to enhance the rate of sustained viral response or HBsAg loss occurred during treatment. In this cohort study, the efficacy of extended therapy of interferon in HBeAg negative chronic hepatitis B patients will be evaluated.

The aim of this study is to investigate the relationships between interleukin 28B genetic variants and the response to treatment of chronic hepatitis C in Chinese children.

The study is to observe the therapeutic effects and long-term follow-up after ending anti-HBV therapy with nucleos(t)ide analogs in patients with chronic hepatitis b.

Recent TAF has introduced to have more safe profiles than TDF in clinical trials. Especially, TDF has the renal safety issue in high risk group including HIV, decompensated cirrhosis (ascites), uncontrolled DM etc. However, there is no available cohort data for treatment efficacy and safety in TDF-TAF switch therapy in treatment-naïve chronic hepatitis B. The aim of this study is to evaluate safety and efficacy of TAF switch therapy in patients with chronic hepatitis B who have been treated with TDF.

Pegylated interferon(IFN) α-2a(Peg-IFN-α) not only inhibit viral replication, but also play an important role in immune regulation, while entecavir(ETV) drugs only inhibit viral replication. In hepatitis B infection, Plasmacytoid Dendritic Cells（pDCs） are the main effector cells in early antiviral innate immune response. This study was aimed at investigating the changes of pDCs frequency and function, and the expression of costimulatory molecules CD86(Cluster of Differentiation antigen 86) during Peg-IFN-αand entecavir(ETV) therapy.Meanwhile, investigators want to verify whether Peg-IFN-α suppressed the virus and the reduction of virus led to the recovery of pDCs function, or Peg-IFN-α enhanced pDCs function which gave rise to the decline of the virus.