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Aiming4

01/31/07 7:21 PM

#3520 RE: neuroinv #3518

Neuro - is there any chance the FDA could mandate long term safety trials for CX-717 before it could progress to a Phase III?... Aiming4.

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striaterminalis

01/31/07 7:44 PM

#3522 RE: neuroinv #3518

Anybody have a guess at the molar concentration of the drug in the brain at the highest doses?

We are assuming the high concentrations that presumably led to a signal were present when the animal was sacrificed. If not, and animals were sacrificed at some long duration after the last drug treatment, then all speculations about drug/metabolite-fixative interactions are not relevant.