Replication of a genetic-risk variant associated with Alzheimer's disease's Lead Investigator: Judes Poirier Institution : McGill University E-Mail : judes.poirier@mcgill.ca Proposal ID : 894 Proposal Description: Using a population isolate from eastern Canada, we identified a genetic polymorphism that affects tau pathology in the unique cohort of homogenous subjects. Using the GWAS data and pathological measurements from the ADC, we wish to replicate our finding and extend the analyse to the whole region. Using the existing ADC dataset, we wish to replicate the association we recently observed in large cohort of autopsy-confirmed AD and control cases derived from a unique population isolate from Eastern Canada.. To do so, we wish to use the GWAS dataset generated by the ADC from autopsy-confirmed AD and control cases for which, plaques and tangles densities analyses were performed.