IFNA1 and Cirrhosis: A total of 181 DAA-naïve patients with GT1 HCV infection without cirrhosis were enrolled and treated in Substudy 1; 129 in Arm A and 52 in Arm B. Of those, 64% and 73% were female and 27% and 29% were treatment-experienced with IFN/pegIFN ± RBV in Arms A and B, respectively.