Common variants in Alzheimer's disease and risk stratification by polygenic risk scores.

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Moreno-Grau, Sonia 
Tesi, Niccolo 
Grenier-Boley, Benjamin 
Andrade, Victor 

Genetic discoveries of Alzheimer's disease are the drivers of our understanding, and together with polygenetic risk stratification can contribute towards planning of feasible and efficient preventive and curative clinical trials. We first perform a large genetic association study by merging all available case-control datasets and by-proxy study results (discovery n = 409,435 and validation size n = 58,190). Here, we add six variants associated with Alzheimer's disease risk (near APP, CHRNE, PRKD3/NDUFAF7, PLCG2 and two exonic variants in the SHARPIN gene). Assessment of the polygenic risk score and stratifying by APOE reveal a 4 to 5.5 years difference in median age at onset of Alzheimer's disease patients in APOE ɛ4 carriers. Because of this study, the underlying mechanisms of APP can be studied to refine the amyloid cascade and the polygenic risk score provides a tool to select individuals at high risk of Alzheimer's disease.


Funder: Funder: Fundación bancaria ‘La Caixa’ Number: LCF/PR/PR16/51110003 Funder: Grifols SA Number: LCF/PR/PR16/51110003 Funder: European Union/EFPIA Innovative Medicines Initiative Joint Number: 115975 Funder: JPco-fuND FP-829-029 Number: 733051061

Age of Onset, Aged, Aged, 80 and over, Alzheimer Disease, Amyloid beta-Protein Precursor, Apolipoproteins E, Case-Control Studies, Cohort Studies, Datasets as Topic, Female, Follow-Up Studies, Genetic Predisposition to Disease, Genome-Wide Association Study, Heterozygote, Humans, Male, Middle Aged, Multifactorial Inheritance, Polymorphism, Single Nucleotide, Risk Assessment, Risk Factors
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Nat Commun
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Springer Science and Business Media LLC
Medical Research Council (G0601022)
Medical Research Council (G9901400)
Economic and Social Research Council (ES/G035954/1)
Arts and Humanities Research Council (AH/R005990/1)
ESRC (ES/V010964/1)