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Decline in HCV RNA levels in response to treatment with peg-IFNα/ribavirin among African American participants in the Virahep-C Trial. Genotype for IFNL4-ΔG/TT was a stronger predictor than that for GWAS marker IFNL4-rs12979860 (P = 0.015) (Prokunina-Olsson and others 2013).
