Active clinical trials for "Hepatitis A"

This is a randomized, open-labelled, prospective 96-week study comparing the antiviral efficacy and safety of switching to entecavir 0.5mg QD from lamivudine versus maintaining lamivudine 100mg QD treatment in CHB patients currently receiving lamivudine monotherapy.

The purpose of this study is to determine the efficacy and safety of two dosages of PegIntron for treating hepatitis B e antigen (HBeAg) positive chronic hepatitis B compared with the approved dosage, which is PegIntron 1.0 microgram (mcg)/kg given once a week for 24 weeks. This study compares dosages of (1) 1.5 mcg/kg once a week for 24 weeks and (2) 1.5 mcg/kg once a week for 48 weeks with the approved dosage. All subjects are followed for 24 weeks after their treatment ends.

The purposes of the PLUS study were to confirm the safety and tolerability of two doses of LocteronTM (320 ug and 640 ug) dosed over four weeks in patients who had failed prior anti-HCV therapies (Panels A and B), and then to continue to study the safety, tolerability, and preliminary efficacy of the same two doses of LocteronTM (320 ug and 640 ug) in treatment-naïve genotype 1 HCV patients when Locteron dosed over 12 weeks (Panel C). All subjects were also to receive oral daily weight-based ribavirin.

The objectives are to determine the immunological profile (CD4+, CD8+ cells, DTH) induced by immunization with HCV antigen peptide vaccine with polyarginine. to document virological (HCV-RNA) and biochemical (ALT) responses following immunization with HCV antigen peptide vaccine with polyarginine. to assess the safety of immunization with HCV antigen peptide vaccine with polyarginine.

To determine the efficacy and safety of Peginterferón alfa-2a (40 KD) plus Ribavirin in patients who have relapsed or not responded to a previous suboptimal therapy based in Interferon.

Antiviral resistance mutations limit the efficacy of therapy for chronic hepatitis B. At year 2, resistance to adefovir may occur as high as 25% in patients with history of lamivudine resistance. Resistance to entecavir is reported to be 10% in lamivudine refractory patients during the same period. However, combination of lamivudine and adefovir decreased the adefovir resistance rate as low as 0% in the recent studies. By overcoming the antiviral resistance, the efficacy of therapy will be maximized. This study is intended to compare the efficacy of two strategies, combination of lamivudine and adefovir vs. entecavir monotherapy in patients with lamivudine resistance.

The purpose of this study is to explore the efficacy, safety, tolerability, pharmacokinetics (the study of the way a drug enters and leaves the blood and tissues over time), and pharmacokinetic-pharmacodynamic relationships of telaprevir administered in two different doses in combination with two standard therapies commercially available for chronic (lasting a long time) genotype 1 Hepatitis (inflammation of the liver) C virus (HCV) infection.

This 3 arm study will compare the efficacy and safety of combination therapy with PEGASYS + adefovir dipivoxil (ADV) versus PEGASYS monotherapy, in HBeAg-negative chronic hepatitis B patients.Patients will be randomized to receive 1)PEGASYS 180 micrograms sc weekly + ADV 10mg po daily for 48 weeks, followed by ADV 10mg po monotherapy for an additional 48 weeks, and a further 48 week treatment-free follow-up, 2)PEGASYS 180 micrograms sc weekly + ADV 10mg po daily for 48 weeks, followed by a 96 week treatment-free follow-up, or 3)PEGASYS 180 micrograms sc monotherapy weekly for 48 weeks, followed by a 96 week treatment-free follow-up. The anticipated time on study treatment is 1-2 years, and the target sample size is <100 individuals.

Phase 1 study in HVC (Hepatitis C Virus) infected subjects to determine pharmacokinetics, safety and efficacy in subjects with no or inadequate response to prior treatment.

By chance the investigators found that iv. silibinin has a potent antiviral effect against the hepatitis C virus. Based on the results of the dose finding study (published) te optima dosing schedule is explored.This study will be evaluate whether the highest active dose given for the optimal time combined with standard of care will result in a sustained virologic response (=cure of hepatitis C).