Active clinical trials for "Hepatitis A"

This study will examine the effectiveness of 28 days of triple combination therapy including SCY-635 with peginterferon alfa 2a and ribavirin in reducing serum HCV RNA levels. An additional 20 weeks of treatment with the currently approved standard of care will be offered to all participants. The Week 24 visit will be the last on-study visit. After the Week 24 visit, all subjects with undetectable HCV RNA will be given the option to continue treatment with standard of care for an additional 24 weeks (out to Week 48) under the care of their Principal Investigator.

Objective(s) The primary study objective is to assess the antiviral effect of 12 weeks of adefovir dipivoxil treatment in Korean patients with chronic hepatitis B and compensated liver disease. The secondary study objectives are to assess the antiviral effect, clinical benefit and safety of 52 weeks of adefovir dipivoxil treatment. Endpoint(s) The primary efficacy endpoint is "Mean log10 reduction in serum HBV DNA level from baseline to Week 12". The secondary efficacy endpoints include (a) the proportion of patients achieving serum ALT normalization at Week 52, (b) other assessments of antiviral effects (the proportion of patients achieving HBV DNA no less than 300 copies per mL at Week 52), (c)HBeAg loss, HBeAg seroconversion, HBsAg loss and HBsAg seroconversion, (d)the proportion of patients achieving serum ALT normalization at Week 12. Study Design This is an open label, multi centre phase IV study for Korean patients with chronic hepatitis B and compensated liver disease, assessing the antiviral effect of 12 weeks treatment of Adefovir dipivoxil as a primary objective and antiviral effect, clinical benefit and safety of 52 weeks treatment as secondary objectives. Patients will be screened for eligibility criteria and the baseline visit for the treatment initiation should occur no more than 4 weeks after screening. Total treatment period will be 52 weeks and patients will return to the clinic for assessments as scheduled during treatment period. After the 52 week study period, it is likely that the patient will benefit from continued treatment with commercial adefovir. If in the investigator's clinical judgement this is the case, the investigator should ensure that a routine prescription is available in a timely manner, and that no unnecessary interruption in treatment occurs. Study Population A minimum of 100 male or female Korean patients more than 18 years of age with HBeAg positive chronic hepatitis B and compensated liver disease who meet the eligibility criteria will be enrolled. Study Assessments and Procedures Potential patients will be screened prior to study entry and eligible patients who have given their consent will have further baseline assessments. Following the screening, the first doses of study medications will be given at baseline and patients will return to the clinic for assessment as scheduled during treatment period. Patients who discontinue treatment prematurely will be followed up every 4 weeks for 12 weeks following the withdrawal visit. The following key assessment and or measurement will be made at one or more visits during the study. (See section 14.1 Appendix 1. Time and event schedule): Pregnancy test (females of child-bearing potential only) Haematology and serum chemistry profile including prothrombin time(PT) and AFP HBV DNA (Roche COBAS AMPLICOR HBV MONITOR Test, LLOD 300 copies per ml) Hepatitis B markers: HBeAg(Anti HBe will be tested if HBeAg is negative), HBsAg(Anti HBs will be tested if HBsAg is negative) Investigational Product(s) Adefovir dipivoxil 10mg tablets will be supplied by GlaxoSmithKline and presented as a white to off white, round tablets, packaged in the bottle containing 30 tablets

Raltegravir is the first integrase inhibitor used in humans. It has been shown to be highly efficacious and well tolerated in phase III clinical trials in multidrug experienced human immunodeficiency virus(HIV)-infected patients, as well as initial therapy in untreated patients. Pharmacokinetic studies in healthy adult subjects indicate that the major mechanism of clearance of the drug is glucuronidation mediated by UGT1A1, with a minor contribution of renal excretion of unchanged parent compound. Unlike CYP-based metabolism, glucuronidation is generally found to be relatively unaffected by hepatic disease. A single dose pharmacokinetic study of raltegravir in patients with mild to moderate hepatic insufficiency (Steigbigel et al. 2008) found no clinically important effect on the drug pharmacokinetic profile, with no dosage adjustment being necessary. The liver safety and tolerability of boosted atazanavir (ATV/r) has been evaluated in human immunodeficiency virus and hepatitis C virus (HIV/HCV) coinfected patients with advanced liver disease (decompensated cirrhosis) (Hermida JM et al. 4th IAS: Sidney, 2007). Similar to Raltegravir, ATV is also mainly metabolized by conjugation through UGT1A1. There is an urgent need for potent and efficacious ARV drugs with a clean safety liver profile even in patients with severe liver disease. The investigators hypothesized that pharmacokinetics will not be altered in HIV/HCV patients with advanced (Child-Pugh grade C) cirrhosis or in those with no histologic liver damage.

The purpose of this study is to investigate the effectiveness and safety of TMC435 compared with placebo in participants who are infected with genotype 1 hepatitis C virus who have never received treatment before. Participants will also receive peginterferon alfa-2a or peginterferon alfa-2b and ribavirin as part of their treatment.

The purpose of this study is to evaluate the efficacy and safety of TMC435 in combination with peginterferon alfa-2a (PegIFNα-2a) and ribavirin in genotype 1 hepatitis C virus (HCV)-infected participants who failed to respond to previous interferon (IFN)-based therapy in Japan.

This phase 2b study will evaluate the efficacy and safety of 16 and 24 weeks of response-guided duration of therapy with GS-9190 and GS-9256 in combination with Peginterferon Alfa-2a (Pegasys®) and Ribavirin (Copegus®). Additionally, the efficacy and safety of 24 weeks of GS-9256 in combination with Peginterferon Alfa-2a (Pegasys®) and Ribavirin (Copegus®) will be evaluated.

This clinical trial compares the efficacy of peginterferon plus tenofovir for 24 weeks followed by monotherapy with tenofovir for a further 3.5 years to the efficacy of tenofovir alone given for 4 years in patients with chronic hepatitis B. The primary measure of outcome will be HBsAg loss in serum at 48 weeks after stopping all antiviral therapy (sustained off-treatment response).

The purpose of this study is to determine the effectiveness of silymarin 700 mg thrice daily and assess the safety in patients with hepatitis C virus infection compared to a placebo.

The aim of the study is to investigate in subjects receiving their first course of peg-interferon α-2b plus ribavirin therapy for chronic HCV infection

Genotype 4 hepatitis C virus is the cause of approximately 20% of the 170 million cases of chronic hepatitis C in the world. Although rare in western nations, genotype 4 is the most common variant of the hepatitis C virus in Egypt and is also found throughout Africa and the Middle East. Early reports on the treatment of patients with genotype 4 chronic hepatitis C with interferon-alfa (IFN)-alfa monotherapy indicate poor rates of sustained viral response (SVR). With the introduction of ribavirin combination therapy and with pegylation of the IFN alfa molecule, however, response rates have improved dramatically, and current clinical trial data indicate that SVR rates between 43 and 79% are attainable in genotype 4 patients who are receiving pegylated IFN alfa plus ribavirin for 48 weeks. Clinical advances to optimize treatment for each patient have also been made, and tailored treatment options are now being developed that are comparable to the treatment approaches for genotype 1, 2, and 3 patients. A treatment duration of between 36 and 48 weeks appears to be optimal for most patients with chronic hepatitis C genotype 4.The aim of this study is to assess the efficacy and safety of pegylated interferon alpha 2a in patients with chronic hepatitis C genotype 4 in comparison to a historical cohort of patients treated with pegylated interferon alpha 2b