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Abstract
Interferon-gamma1b (IFN-gamma1b) is a pleiotropic cytokine that displays antifibrotic, antiviral, and antiproliferative activity. A total of 502 patients with compensated liver disease and an Ishak fibrosis score of 4-6 were randomized in a double-blind, placebo-controlled study, and 488 of these patients received subcutaneous injections of IFN-gamma1b 100 microg (group 1, n=169), IFN-gamma1b 200 microg (group 2, n=157), or placebo (group 3, n=162) 3 times a week for 48 weeks. Most patients (83.6%) had cirrhosis at baseline (Ishak score=5 or 6). Posttreatment liver biopsies were assessed in a blinded fashion for a reduction of 1 or more Ishak points (primary endpoint). Four hundred twenty patients with pretreatment and posttreatment liver biopsies were evaluable and showed no improvement in Ishak score between the 3 treatment groups (12.1%, 12.4%, and 16% of patients in groups 1, 2, and 3, respectively; P>0.05). Analysis of IFN-gamma-inducible biomarkers revealed that interferon-inducible T cell-alpha chemoattractant (ITAC), an IFN-gamma-inducible CXCR3 chemokine was an independent predictor of stable or improving Ishak score. IFN-gamma1b was well tolerated. There were similar numbers of deaths in all 3 arms (5, 5, and 4, respectively), and most were related to complications of cirrhosis.IFN-gamma1b therapy was not able to reverse fibrosis in patients with advanced liver disease for 1 year. Subgroups of patients with elevated ITAC levels and perhaps less advanced disease may be considered for future studies with IFN-gamma1b.
View details for DOI 10.1002/hep.21561
View details for Web of Science ID 000244794600004
View details for PubMedID 17326152