Open AccessPrognostic value of blood group specificity and IL-28в genotype for the assessment of liver fibrosis in patients with chronic genotype 1 hepatitis C, non-responders to the treatment with pegylated interferon α-2 and ribavarin
Author(s) -
Elena I. Kukhareva,
Pavel Ogurtsov
Publication year - 2017
Publication title -
kliničeskaâ medicina
Language(s) - English
Resource type - Journals
eISSN - 2412-1339
pISSN - 0023-2149
DOI - 10.18821/0023-2149-2017-95-9-847-854
Subject(s) - medicine , genotype , gastroenterology , pegylated interferon , liver biopsy , odds ratio , hepatitis c virus , immunology , ribavirin , biopsy , biology , virus , gene , biochemistry
Aim. To evaluate the prognostic value of blood group and IL-28B genotype with respect to dynamics of liver fibrosis (LF) in patients with chronic genotype-1 hepatitis C (HCV-1) who did not respond to antiviral therapy (AVT) with pegylated interferon alpha 2 (peg-IFN-α-2) and ribavarin (RBV) Material and methods. The study included 122 primary patients with HCV-1 who underwent paired liver biopsy or elastometry steam. The main group (n=66) consisted of patients who received AVT (peg-IFN-α-2/RBV) but failed to achieve a sustainable virologic response (SVR). Control group (n=56) comprised patients treated without AVT. Results. Negative dynamics of LF in patients of the main group occurred significantly more frequently than in the placebo group (p=0.025, φ2 criterion). LF dynamic patterns in patients of the main group varied depending on the IL-28B genotype and blood group, p=0.001 and p=0.014 respectively. Factorial analysis of negative LP dynamics in the main group revealed the relationship between blood group (fr=0,931) and IL-28B genotype (fr= 0.960) while classification analysis demonstrated the predictive value of combination of gene IL-28B polymorphism and blood group (p<0.0001). The assessment of probability of negative LF dynamics in the main group (logistic analysis) showed that IL-28B gene genotypes ST/TG, TT/TT,TG,GG and blood group A(II) alone or their combination increase the odds ratio of LF negative dynamics in SVR(-) under conditions of interferon therapy. In patients having blood group 0(I) and combination of gene IL-28B genotypes CC/TT, CT/TT with blood group A(II) the odds ratio of negative dynamics in SVR(-) is reduced under the same conditions. Conclusions. Blood group and IL-28B genotype predict dynamics of liver fibrosis in patients with HCV-1 not responding to interferon therapy.