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  • Title: Plasma apolipoprotein H limits HCV replication and associates with response to NS3 protease inhibitors-based therapy.
    Author: Sultanik P, Mallet V, Lagaye S, Casrouge A, Dorival C, Barthe Y, Fontaine H, Hézode C, Mottez E, Bronowicki JP, Carrat F, Theodorou I, Abel L, Gayat E, Fontanet A, Pol S, Albert ML, ANRS CO20-CUPIC.
    Journal: Liver Int; 2015 Jul; 35(7):1833-44. PubMed ID: 25556540.
    Abstract:
    BACKGROUND & AIMS: Chronic infection with HCV remains a public health problem with approximately 150 million people infected worldwide. HCV intersects with lipid metabolism for replication and entry; and plasma concentrations of apolipoproteins have been identified as predictors for response to therapy. Herein, we conducted a screen of plasma proteins, including all apolipoproteins, to identify correlates of response to pegylated-interferon/ribavirin (PR) and HCV non-structural protein 3 (NS3) inhibitors (i.e., telaprevir/boceprevir) therapy in treatment-experienced cirrhotic patients from the ANRS CUPIC cohort. METHODS: We analysed 220 baseline plasma protein concentrations in 189 patients using Luminex technology and analyzed results. RESULTS: We identified baseline levels of apolipoprotein H (apoH) as a surrogate marker for sustained virological response (SVR). Notably, increased plasma concentration of apoH, used in combination with known clinical parameters, established a robust model with improved classification of patients as likely to achieve SVR (AUC = 0.77, Se = 66%, Sp = 72%, NRI = 39%). Moreover, we provide mechanistic information that indicates a previously unidentified role for apoH during viral entry. Using a human liver slices HCV infection model, we demonstrate that apoH limits replication. CONCLUSION: These data support testing of new biomarker strategies for the management of cirrhotic HCV patients and expand our understanding of how apoH may intersect with HCV infection.
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