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Exp Ther Med. 2011 Jul;2(4):715-718. Epub 2011 Apr 7.

Interleukin-28B polymorphisms are associated with an early viral response in patients receiving hepatitis C therapy.

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  • 1Department of Medicine, and.


Prediction of the efficacy of pegylated interferon (PEG-IFN) plus ribavirin (RBV) therapy against hepatitis C (HCV) infection is valuable for determining its applications. This study investigated the relationship between the early response of HCV to PEG-IFN/RBV therapy and the inter-leukin (IL)-28B genetic polymorphism in patients with HCV infection. The genotypes of IL-28B rs8099917 T>G single nucleotide polymorphism were determined in 144 patients with HCV infection. Among them, 59 were treated with PEG-IFN/RBV. The frequency of IL-28B TT homozygosity was 75.2% in patients with HCV serotype 1 and 84.6% in patients with serotype 2. Multivariate analysis showed that IL-28B TT homozygosity (P=0.014) and the platelets number (P=0.030) was associated with the early suppression of HCV-RNA at 12 weeks after the start of PEG-IFN/RBV therapy. The IL-28B polymorphism was a significant pre-treatment predictor of the response to PEG-IFN/RBV therapy in patients with HCV infection.

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