"4 patients received incorrect RBV doses (3 received <50% of the prescribed dose:1 given RBV in the RBV-free arm); all achieved HCV-RNA <25 IU/mL at FU12
3 patients discontinued early:1 patient at Day 3 (violated protocol inclusion criterion), and 2 patients at Day 22 and Day 35 (withdrew consent – patients had undetectable HCV RNA at the time of discontinuation)"
Re 5172
Tolerability/AEs seemed to be an issue at the higher doses(400/800mg). They're moving forward with 100mg.