P2‐202: VOLUMETRIC MRI RESULTS OF BMS AVAGACESTAT IN A PRODROMAL AD POPULATION. (1st July 2014) - Istace, Audrey; Bracoud, Luc; Berman, Robert M.; Luo, Feng; Roche, Florent; Salloway, Stephen; van Dyck, Christopher; Dubois, Bruno; Andreasen, Niels; Brody, Mark; Curtis, Craig; Soininen, Hilkka; et al.