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To develop an integrated pharmacokinetic/viral kinetic (PK/VK) model to predict long-term virological response rates of daclatasvir (DCV) and asunaprevir (ASV) combination therapy in patients infected with genotype 1 (GT1) chronic hepatitis C virus (HCV).A systematic publication search was conducted for DCV or ASV monotherapy or combination therapy in healthy volunteers or patients infected with GT1 HCV.A total of 635 study-level aggregate concentrations from 11 trials were used to build PK models for DCV and ASV separately.An integrated PK/VK model was sequentially developed to characterize the effect of DCV and ASV on HCV viral RNA load based on 952 individuaMevel data from 71 patients in 4 single or multiple ascending dose studies.