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Impact of IL28B-Related Single Nucleotide Polymorphisms on Liver Transient Elastography in Chronic Hepatitis C Infection
University of Gothenburg.
University of Gothenburg.
University of Gothenburg.
University of Gothenburg.
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2013 (English)In: PLoS ONE, ISSN 1932-6203, E-ISSN 1932-6203, Vol. 8, no 11, e80172- p.Article in journal (Refereed) Published
Abstract [en]

Background and Aims

Recently, several genome-wide association studies have revealed that single nucleotide polymorphisms (SNPs) in proximity to IL28B predict spontaneous clearance of hepatitis C virus (HCV) infection as well as outcome following pegylated interferon and ribavirin therapy among genotype 1 infected patients. Additionally the presence of the otherwise favorable IL28B genetic variants in the context of HCV genotype 3 infection reportedly entail more pronounced liver fibrosis and steatosis. The present study aimed to evaluate the impact of IL28B SNP variability on liver stiffness as accessed by transient elastography.

Methods

Seven hundred and seventy-one Swedish HCV infected patients sequentially undergoing liver stiffness measurement by means of Fibroscan® in the context of a real-life trial had samples available for IL28B genotyping (rs12979860) and HCV genotyping.

Results

CCrs12979860 was more common among HCV genotype 2 or 3 infected treatment-naïve patients than among those infected with genotype 1 (P<0.0001). Additionally CCrs12979860 among HCV genotype 3 infected patients was associated with higher liver stiffness values (P = 0.004), and higher AST to platelet ratio index (APRI; p = 0.02) as compared to carriers of the T allele. Among HCV genotype 1 infected patients, CCrs12979860 was significantly associated with higher viral load (P = 0.001), with a similar non-significant trend noted among HCV genotype 3 infected patients.

Conclusion

This study confirms previous reports that the CCrs12979860 SNP is associated with more pronounced liver pathology in patients chronically infected with HCV genotype 3 as compared to genotype 1, suggesting that IL28B genetic variants differently regulates the course of HCV infection across HCV genotypes.

Place, publisher, year, edition, pages
2013. Vol. 8, no 11, e80172- p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-102375DOI: 10.1371/journal.pone.0080172ISI: 000327143800131OAI: oai:DiVA.org:liu-102375DiVA: diva2:677314
Available from: 2013-12-09 Created: 2013-12-09 Last updated: 2017-12-06

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Cardell, Kristina

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Department of Infectious DiseasesDivision of Microbiology and Molecular MedicineFaculty of Health Sciences
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