The Reduced Predictive Value of Interleukin 28b Gene Polymorphisms in a Cohort of Patients With Thyroiditis Developed During Antiviral Therapy for Chronic Hepatitis C: A Preliminary Study
Authors
Huy A Tran1,*, Tracey L Jones2, Elizabeth A Ianna2, Robert A Gibson2, Glenn E M Reeves1
1Hunter Area Pathology Service, John Hunter Hospital, huy.tran@hnehealth.nsw.gov.au, New South Wales 2310, Australia
2Hepatitis C Service, Gastroenterology Department, John Hunter Hospital, Australia
*Corresponding Author: Pathology Service, John Hunter Hospital, Locked Bag Number 1, Hunter Mail Region Centre, huy.tran@hnehealth.nsw.gov.au, New South Wales 2310, Australia. Tel: +61-249214005. Fax: +61-249214440. Email: huy.tran@hnehealth.nsw.gov.au
How to Cite:Tran H, Jones T, Ianna E, Gibson R, Reeves G. The Reduced Predictive Value of Interleukin 28b Gene Polymorphisms in a Cohort of Patients With Thyroiditis Developed During Antiviral Therapy for Chronic Hepatitis C: A Preliminary Study. Hepat Mon. 2012;12(8):6036. doi: https://doi.org/10.5812/hepatmon.6036
Abstract
Background:
Single nucleotide polymorphism in the interleukin28B (IL28B) gene was recently shown to be associated with a significant increase in response to interferon-? and ribavirin treatment in patients with chronic hepatitis C. Similarly, thyroid disease (TD) occurring during treatment confer an improved sustained virologic response (SVR).
Objectives:
To determine the role of IL28B genotypes in a cohort of hepatitis C patients who develop TD during treatment and its relationship to SVR.
Patients and Methods:
IL28B gene profiles including rs12979860, rs12980275 and rs 8099917 and their genotypes were determined in a cohort of 23 hepatitis C patients who developed TD during treatment and their relationship to SVR.
Results:
Out of 23 studies cases, 19 has one or more favorable genotypes, of which 15 (78.9%) achieved SVR. Eleven has all three unfavorable genotypes and yet achieved 72.7 % SVR. The presence of more than one favorable genotype only correctly predicts SVR vs. non- SVR in ~50 % of cases, i.e. by chance.
Conclusions:
Despite the small number of subjects, the presence of one or more unfavorable IL28B genotype does not portend a poor SVR prognostic outcome. This suggests that TD in this clinical context may be a critical factor in the achievement of SVR, probably above that of the genetic predisposition.
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