DFMTI can completely block the rmGlu1 L757V glutamate response.In vitro: DFMTI can completely block the rmGlu1 L757V glutamate response, although significantly higher concentrations were required to induce blockade.In vivo: DFMTI is efficacious in disrupting prepulse inhibition when dosed orally in rats. DFMTI exhibits a moderate decrease in human potency of approximately 3-fold when compared to rat, exemplified by DFMTI.