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Tolerability and efficacy of pegylated consensus interferon-α in the treatment of chronic hepatitis C.
Experimental and Therapeutic Medicine 2017 January
This study aimed to explore and evaluate the tolerability and antiviral activity of pegylated recombinant human consensus interferon-α (PEG-CIFN) in adults with hepatitis C virus (HCV) infection. A total of 48 adult subjects chronically infected with HCV were divided into five groups, which were treated separately with PEG-CIFN 1.0 µg/kg (n=10), 1.5 µg/kg (n=10), 2.0 µg/kg (n=9) or 3.0 µg/kg (n=10), or pegylated IFN α-2a (Pegasys) 180 µg (n=9) as controls. Symptoms were observed and laboratory results collected to monitor adverse reactions, adjust drug dosage and evaluate tolerability. The thrombocytopenic effects in all PEG-CIFN dose groups were less than that of pegylated IFN α-2a (at week 14, P<0.05). The rapid virologic response of the PEG-CIFN 1.5, 2.0 and 3.0 µg/kg groups and the pegylated IFN α-2a group were significantly higher than that of the PEG-CIFN 1.0 µg/kg group (P<0.05). Patients who had HCV genotype 1b infections had relatively high responses. The early virologic response of the PEG-CIFN 1.0, 1.5 and 2.0 µg/kg groups and the pegylated IFN α-2a group were 30, 90, 88.8 and 88.8% respectively. PEG-CIFN is well tolerated, and was found to have dose-dependent effectiveness in subjects with chronic hepatitis C. Virological response rates between PEG-CIFN 1.5 or 2.0 µg/kg, and pegylated IFNα-2a were similar, and not significantly different. It is concluded that 1.5 µg/kg PEG-CIFN may be the clinically recommended dose. PEG-CIFN is superior to pegylated IFN α-2a in maintaining platelet levels.
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