The only unresolved puzzle IF (?) FDA/EMA approves 8/12-week regimens without RBV is how much GILD is going to price sofosbuvir/ledipasvir FDC relative to Sovaldi. If it prices 1/3 higher, 8-week FDC is close to same price as 12-week Sovaldi. It does make ABBV/ENTA 12-week regimen pricing trickier.