Active clinical trials for "Hepatitis C, Chronic"

This trial is designed to assess the safety, tolerability, pharmacokinetics and viral kinetics after multiple infusions of bavituximab in patients co-infected with HCV and HIV.

This study will evaluate the efficacy and safety of different durations of treatment with PEGASYS combined with ribavirin in patients with CHC genotype 2 or 3 infection who have never previously received interferon (IFN) therapy. The anticipated time on study treatment is 3-12 months and the target sample size is 500+ individuals.

Chronic hepatitis C infection is one of the leading causes of chronic liver disease in the United States. Approximately one-third of patients with hepatitis C infection develop cirrhosis of the liver, which can lead to liver failure or liver cancer. The current treatment for hepatitis C infection in previously untreated patients is successful in only about half of patients. There is no established therapy for non-responders. This is a randomized, double-blinded, multicenter trial to determine the effectiveness of thymosin alpha 1 (thymalfasin) 1.6 mg twice weekly plus PEGinterferon alfa-2a 180 ug/wk compared to placebo plus PEGinterferon alfa-2a in adults with chronic hepatitis C without cirrhosis who are non-responders to previous treatment with interferon or interferon plus ribavirin. The definition of non-response requires a positive HCV RNA test at the end of a course of at least 12 weeks of therapy. Patients will receive treatment for 12 months, and will be followed-up for a further 6 months after the end of therapy.

This 4 arm study is designed for patients with CHC who have not responded to peginterferon alfa-2b (12KD)/ribavirin combination therapy. In these patients, the effects of lengthening the duration of treatment, as well as including an initial 12-week period of high-dose PEGASYS (360 micrograms sc), are compared with the standard combination therapy of PEGASYS (180 micrograms sc) and ribavirin (1000-1200mg po). The anticipated time on study treatment is 1-2 years and the target sample size is 500+ individuals.

The purpose of this study is to determine if IDN-6556, when given orally, is safe and effective in patients with chronic hepatitis C virus infection.

This trial is designed to test whether or not the addition of merimepodib (MMPD) to the standard therapy of pegylated interferon and ribavirin will result in a positive treatment response for people who have not previously responded to this therapy. Approximately 315 subjects will be enrolled in this research study at approximately 55 clinical sites in the United States. There will be three study groups. Everyone in the study will receive Pegasys® (pegylated interferon) and Copegus® (ribavirin) at the normally prescribed doses. Two of the groups will also receive the study drug merimepodib (MMPD) twice a day, one group at each dose level being tested. The third group will take a placebo instead of MMPD, with the Pegasys® and Copegus®. After the first 24 weeks of treatment, blood tests will be done to see if subjects are responding to treatment. If they are responding, they will continue receiving study treatment in the study for another 24 weeks. If they are not responding, they will stop study treatment. Everyone who is responding will be monitored for 24 weeks after the last dose of medication, to see how long the response lasts. Evaluations will be performed during the study to look at the safety of the Pegasys®/Copegus® and MMPD or placebo combination, and to see how the combination is working by measuring Hepatitis C Virus in the blood. At some of the clinical sites performing the study, some subjects may also participate in additional testing to look at the metabolism of the drugs, or to look at the immune response to Hepatitis C virus infection and treatment.

The purpose of this study is to determine if the use of epoetin-alpha will allow patients with chronic hepatitis C virus infection to be treated with higher doses of peginterferon-alpha-2b and ribavirin, thus increasing chances at lower viral levels and raising sustained virologic response.

The purpose of this study is to compare three treatment regimens in patients who have received a liver transplant for end-stage liver disease caused by Chronic Hepatitis C infection.

The objective of the study is to evaluate the safety and efficacy of celgosivir for 12 weeks in patients with chronic hepatitis C genotype 1 infection.

This study will test whether gamma interferon is effective in treating chronic hepatitis C infection-a long-lasting viral infection affecting the liver. One-third of patients with hepatitis C infection develop cirrhosis of the liver, which can lead to liver failure or liver cancer. The current treatment for hepatitis C infection is pegylated alpha interferon (peginterferon) plus ribavirin; however, this treatment is successful in only about half of patients. Gamma interferon works similarly to alpha interferon, but through different pathways, and therefore might be helpful in patients who do not respond to alpha interferon. Patients 18 years of age and older with chronic hepatitis C infection, genotype 1, who did not respond to alpha interferon and ribavirin therapy may be eligible for this study. (Genotype 1 is a strain of hepatitis C virus that has a lower treatment success rate.) Potential participants will be admitted to the NIH Clinical Center for 2 to 3 days for a medical evaluation to determine eligibility for the study and, if enrolled, to begin gamma interferon therapy. Screening will include a medical history and physical examination, blood and urine tests, and possibly chest X-ray, abdominal ultrasound, and psychiatric evaluation. Participants will receive injections of gamma interferon under the skin 3 times a week for 4 weeks (a total of 12 injections). They will be randomly assigned to receive either 100 or 200 micrograms of drug per injection. Blood will be drawn just before the first injection and then 6, 12, 24 and 48 hours later to monitor changes in the levels of hepatitis C virus and immune responses to treatment. The amount and rapidity of decrease in virus will be compared with what occurs with alpha interferon treatment to define the relative effectiveness of gamma interferon. (Patients may leave the hospital at any time after the first day, but must return in time for the final blood test.) Patients will be seen in the clinic each week during treatment to report symptoms and drug side effects and to have blood drawn for routine tests and viral levels. After the 4-week treatment is completed, patients will return for follow-up visits at weeks 6 and 8 for routine blood tests.