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  • Title: Efficacy and tolerance of a 6-month treatment course of daily interferon-alpha 2a for chronic hepatitis C with cirrhosis. The Australian Hepatitis C Study Group.
    Author: Farrell G, Cooksley WG, Dudley FJ, Watson K.
    Journal: J Viral Hepat; 1997 Sep; 4(5):317-23. PubMed ID: 9310930.
    Abstract:
    Response to interferon-alpha (IFN-alpha) treatment in hepatitis C is poorer when cirrhosis is present. In the third Australian multicentre hepatitis C trial, Aushep-3, we examined the efficacy and tolerability of an intensive 24-week course of interferon-alpha 2a in Child-Pugh grade A patients with chronic hepatitis C and cirrhosis. This was an open uncontrolled trial of 4.5 million units (MU) of IFN-alpha 2a daily for 24 weeks; follow-up was 48 weeks. Chronic hepatitis C and cirrhosis were confirmed histologically. HCV RNA was determined in serum by reverse transcriptase polymerase chain reaction (PCR), and viral genotyping was by line-probe assay. Treatment response was defined as a reduction of alanine aminotransferase (ALT) to less than 1.5 times the upper limit of normal (and by at least 50% of pretreatment values) at weeks 20 and 24. Sustained response was defined as normal serum ALT after treatment from trial week 28 until week 48. Among the 56 patients, a treatment response occurred in 18 (32% by intention-to-treat; 42% of those who completed treatment) and eight (14%) had a sustained response. At 24 weeks, HCV RNA was not detectable in 12 of 17 treatment responders, and remained negative at 48 weeks in six of eight sustained responders. Treatment response by genotype occurred in 75% of patients with HCV type 2, in 38% with HCV type 3a and in 12% with HCV genotype 1. Sustained response occurred in only one (4%) patient with HCV genotype 1 but in five (20%) with genotypes 2 or 3a. Among 13 patients withdrawn, nine were for adverse effects, most often haematological; 10 others underwent dose reduction for adverse effects. It is concluded that a sustained biochemical and viral response to treatment with IFN-alpha 2a can be obtained in some patients with hepatitis C and cirrhosis, particularly those with genotypes 2 or 3a. Therefore, patients with cirrhosis should be considered for interferon treatment on an individual basis. Genotyping may improve case selection, but vigilance is required for haematological complications.
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