Chronic Hepatitis C Clinical Trial
Official title:
Effect of High Dose vs. Standard Dose of Ribavirin in Patients With Chronic Hepatitis C, Genotype 3, High Viral Load Without Rapid Virological Response
The rate of sustained virological response (SVR) in patients with chronic hepatitis C, genotype 3, high viral load and without rapid virological response (RNA-HCV negative at week 4) is low. Standard of care of these patients include treatment with weekly peginterferon plus 800 mg/day of ribavirin (RBV). Extended treatment to 48 weeks does not provide more clinical benefit than the standard duration. The main hypothesis is that higher dose of ribavirin may be better in terms of SVR than the standard dose.
Aims:
1. Efficacy 1.1) Rate of RNA-HCV negative at week 4 and 24 in each arm. 1.2) Rate of SVR
in each arm.
2. Safety 2.1) Rate of adverse effects in each arm.
Design: Randomized controlled trial.
Patients will be randomly allocated into three arms:
Arm A : Peginterferon α-2a (180 μg/week)SC. plus Ribavirin (800 mg/day) p.o. over 24 weeks.
Arm B: Peginterferon α-2a (180 μg/week) plus Ribavirin (1600 mg/day) with support of Epoetin
β (450 IU/kg/week) SC over 4 weeks:
B1.- If RNA-HCV undetectable at week 4, standard of care will be continued (Peginterferon
α-2a, 180 μg/wee plus Ribavirin (800 mg/day) over 20 additional weeks).
B2.- If RNA-HCV were detectable at week 4, treatment will be continued with peginterferon
α-2a (180 μg/week) plus RBV(1,600 mg/day) plus Epoetin β (450 UI/kg/week) over 20 additional
weeks.
Sample size: 111 patients. To increase the SVR from 50% to 75%. Beta: 0.1; alfa: 0.05; Loss:
15%.
Randomization will be 1:2, 37 patients in Group A and 74 patients in group B.
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
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