>>I think it's fair to say that efficacy data are going to be on par between the 2 drugs, but we don't know about safety yet We don't really know this yet - AKBA drug is much less potent and (at least for daily dosing) may be near the top of their dose response curve. Note that Vifor can terminate this agreement completely within 12 months after the topline vada data is disclosed. Note also that this is not a deal with Fresenius US - it is a deal with an associated distributor. Peter