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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.
Allocation: Randomized, Control: Placebo Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Treatment
Merimepodib, PEG-Interferon-alpha 2a (Pegasys®), Ribavirin (Copegus®)
Joseph L. Cochran, M.D.
Vertex Pharmaceuticals Incorporated
Published on BioPortfolio: 2014-08-27T03:54:11-0400
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Interferon secreted by leukocytes, fibroblasts, or lymphoblasts in response to viruses or interferon inducers other than mitogens, antigens, or allo-antigens. They include alpha- and beta-interferons (INTERFERON-ALPHA and INTERFERON-BETA).
A ubiquitously expressed heterodimeric receptor that is specific for both INTERFERON-ALPHA and INTERFERON-BETA. It is composed of two subunits referred to as IFNAR1 and IFNAR2. The IFNAR2 subunit is believed to serve as the ligand-binding chain; however both chains are required for signal transduction. The interferon alpha-beta receptor signals through the action of JANUS KINASES such as the TYK2 KINASE.
An interferon regulatory factor that binds upstream TRANSCRIPTIONAL REGULATORY ELEMENTS in the GENES for INTERFERON-ALPHA and INTERFERON-BETA. It functions as a transcriptional activator for the INTERFERON TYPE I genes.
A DEAD box RNA helicase that contains two N-terminal CASPASE ACTIVATION AND RECRUITMENT DOMAINS. It functions as a sensor of viral NUCLEIC ACIDS such as DOUBLE-STRANDED RNA and activates the INNATE IMMUNE RESPONSE by inducing the expression of INTERFERON-ALPHA and INTERFERON-BETA. It may also regulate cell growth and APOPTOSIS.
A multimeric complex that functions as a ligand-dependent transcription factor. ISGF3 is assembled in the CYTOPLASM and translocated to the CELL NUCLEUS in response to INTERFERON signaling. It consists of ISGF3-GAMMA and ISGF3-ALPHA, and it regulates expression of many interferon-responsive GENES.
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