As to your last point BDZ I'm a little unclear about what we should expect....

I understand that the e in eGFR stands for estimated, and that simple GFR is the hard and fast actual number.  Should we be expecting eGFR or GFR?  If its GFR then I would have to assume that any eGFR number is basically worthless...who cares about estimates when you have the actual number.

If it is simply eGFR, is that enough for the FDA to go on in granting another BTD?  I imagine you don't know....that anything is possible, but any thoughts/impressions are always appreciated.