Blood-based multivariate methylation risk score for cognitive impairment and dementia
Author:
Koetsier JarnoORCID, Cavill RachelORCID, Reijnders RickORCID, Harvey JoshuaORCID, Deckers KayORCID, Köhler SebastianORCID, Eijssen LarsORCID, Smith Rebecca G., Smith Adam R., Burrage JoeORCID, Walker Emma M., Shireby GemmaORCID, Hannon EilisORCID, Dempster EmmaORCID, Frayling Tim, Mill JonathanORCID, Dobricic ValerijaORCID, Sommerer YasmineORCID, Johannsen PeterORCID, Wittig Michael, Franke AndreORCID, Vandenberghe RikORCID, Schaeverbeke JolienORCID, Freund-Levi YvonneORCID, Frölich Lutz, Scheltens PhilipORCID, Teunissen CharlotteORCID, Frisoni GiovanniORCID, Blin Olivier, Richardson Jill, Bordet RégisORCID, Engelborghs SebastiaanORCID, de Roeck EllenORCID, Martinez-Lage PabloORCID, Tainta MikelORCID, Lleó AlbertoORCID, Sala IsabelORCID, Popp JuliusORCID, Peyratout Gwedoline, Verhey FransORCID, Tsolaki Magda, Andreasson UlfORCID, Blennow KajORCID, Zetterberg HenrikORCID, Streffer JohannesORCID, Vos Stephanie J. B., Lovestone SimonORCID, Visser Pieter-JelleORCID, Bertram LarsORCID, Lunnon KatieORCID, Pishva EhsanORCID
Abstract
ABSTRACTINTRODUCTIONGiven the established association between DNA methylation and the pathophysiology of dementia and its plausible role as a molecular mediator of lifestyle and environment, blood-derived DNA methylation data could enable early detection of dementia risk.METHODSIn conjunction with an extensive array of machine learning techniques, we employed whole blood genome-wide DNA methylation data as a surrogate for 14 modifiable and non-modifiable factors in the assessment of dementia risk in two independent cohorts of Alzheimer’s disease (AD) and Parkinson’s disease (PD).RESULTSWe established a multivariate methylation risk score (MMRS) to identify the status of mild cognitive impairment (MCI) cross-sectionally, independent of age and sex. We further demonstrated significant predictive capability of this score for the prospective onset of cognitive decline in AD and PD.DISCUSSIONOur work shows the potential of employing blood-derived DNA methylation data in the assessment of dementia risk.
Publisher
Cold Spring Harbor Laboratory
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