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HLA-B, HLA-C and KIR improve the predictive value of IFNL3 for Hepatitis C spontaneous clearance.

HLA-B, HLA-C and KIR improve the predictive value of IFNL3 for Hepatitis C spontaneous clearance.
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Frias M, Rivero-Juárez A, Rodriguez-Cano D, Camacho Á, López-López P, Risalde MÁ, Manzanares-Martín B, Brieva T, Machuca I, Rivero A,


Frias M, Rivero-Juárez A, Rodriguez-Cano D, Camacho Á, López-López P, Risalde MÁ, Manzanares-Martín B, Brieva T, Machuca I, Rivero A, (click to view)

Frias M, Rivero-Juárez A, Rodriguez-Cano D, Camacho Á, López-López P, Risalde MÁ, Manzanares-Martín B, Brieva T, Machuca I, Rivero A,

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Scientific reports 2018 01 128(1) 659 doi 10.1038/s41598-017-17531-7
Abstract

IFNL3 is the strongest predictor of spontaneous resolution (SR) of hepatitis C virus (HCV), however, consideration of IFNL3 genotype alone is of limited clinical value for the prediction of SR or chronic HCV infection. The objective of this study was to analyze the impact of HLA-B, HLA-C and KIRs on SR, as well as their additive effects on the predictive value of the IFNL3 genotype. We conducted a retrospective study of HIV patients that included both SR and chronic HCV patients. In our study, 61.6% of patients with IFNL3 CC achieved SR, and 81.5% with non-CC genotypes did not achieve SR. HLA-B*44, HLA-C*12, and KIR3DS1 were identified as predictive factors for SR, with percentages of 77.4%, 85.7% and 86.2%, respectively, for patients who did not experience SR. The presence of at least one of these three markers, defined as a genetically unfavorable profile (GUP), combined with the IFNL3 non-CC genotype showed a value of 100% for non-SR. The absence of the three markers, defined as a genetically favorable profile (GFP), in addition to the IFNL3 CC genotype showed a percentage of 74.1% for SR. The combination of these markers in addition to the IFNL3 genotype improves the predictive value of IFNL3 for SR of acute HCV infection in HIV patients, which would be clinically valuable.

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