Title |
Interleukin 28B polymorphisms are the only common genetic variants associated with low‐density lipoprotein cholesterol (LDL‐C) in genotype‐1 chronic hepatitis C and determine the association between LDL‐C and treatment response
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Published in |
Journal of Viral Hepatitis, February 2012
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DOI | 10.1111/j.1365-2893.2011.01553.x |
Pubmed ID | |
Authors |
P. J. Clark, A. J. Thompson, M. Zhu, D. M. Vock, Q. Zhu, D. Ge, K. Patel, S. A. Harrison, T. J. Urban, S. Naggie, J. Fellay, H. L. Tillmann, K. Shianna, S. Noviello, L. D. Pedicone, R. Esteban, P. Kwo, M. S. Sulkowski, N. Afdhal, J. K. Albrecht, D. B. Goldstein, J. G. McHutchison, A. J. Muir, for the IDEAL investigators |
Abstract |
Low-density lipoprotein cholesterol (LDL-C) levels and interleukin 28B (IL28B) polymorphism are associated with sustained viral response (SVR) to peginterferon/ribavirin (pegIFN/RBV) for chronic hepatitis C (CHC) infection. IL28B has been linked with LDL-C levels using a candidate gene approach, but it is not known whether other genetic variants are associated with LDL-C, nor how these factors definitively affect SVR. We assessed genetic predictors of serum lipid and triglyceride levels in 1604 patients with genotype 1 (G1) chronic hepatitis C virus (HCV) infection by genome-wide association study and developed multivariable predictive models of SVR. IL28B polymorphisms were the only common genetic variants associated with pretreatment LDL-C level in Caucasians (rs12980275, P = 4.7 × 10(-17), poor response IL28B variants associated with lower LDL-C). The association was dependent on HCV infection, IL28B genotype was no longer associated with LDL-C in SVR patients after treatment, while the association remained significant in non-SVR patients (P < 0.001). LDL-C was significantly associated with SVR for heterozygous IL28B genotype patients (P < 0.001) but not for homozygous genotypes. SVR modelling suggested that IL28B heterozygotes with LDL-C > 130 mg/dL and HCV RNA ≤600 000 IU/mL may anticipate cure rates >80%, while the absence of these two criteria was associated with an SVR rate of <35%. IL28B polymorphisms are the only common genetic variants associated with pretreatment LDL-C in G1-HCV. LDL-C remains significantly associated with SVR for heterozygous IL28B genotype patients, where LDL-C and HCV RNA burden may identify those patients with high or low likelihood of cure with pegIFN/RBV therapy. |
X Demographics
Geographical breakdown
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Australia | 1 | 100% |
Demographic breakdown
Type | Count | As % |
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Scientists | 1 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 23 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 4 | 17% |
Researcher | 4 | 17% |
Student > Bachelor | 3 | 13% |
Other | 2 | 9% |
Student > Master | 2 | 9% |
Other | 4 | 17% |
Unknown | 4 | 17% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 9 | 39% |
Medicine and Dentistry | 5 | 22% |
Biochemistry, Genetics and Molecular Biology | 2 | 9% |
Nursing and Health Professions | 1 | 4% |
Mathematics | 1 | 4% |
Other | 0 | 0% |
Unknown | 5 | 22% |