1 research outputs found
Recommended from our members
Alzheimer's polygenic risk scores are associated with cognitive phenotypes in Down syndrome
Funder: NeuroGenomics and Informatics CenterFunder: Washington University School of MedicineFunder: Chan Zuckerberg Initiative; doi: http://dx.doi.org/10.13039/100014989Funder: Washington UniversityFunder: National Institute on Aging; doi: http://dx.doi.org/10.13039/100000049Funder: German Center for Neurodegenerative Diseases; doi: http://dx.doi.org/10.13039/501100005224Funder: FLENIFunder: Japan Agency for Medical Research and Development; doi: http://dx.doi.org/10.13039/100009619Funder: KHIDI; doi: http://dx.doi.org/10.13039/501100003710Funder: National Institute of Biomedical Imaging and Bioengineering; doi: http://dx.doi.org/10.13039/100000070Funder: NICHD; doi: http://dx.doi.org/10.13039/100009633INTRODUCTION: This study aimed to investigate the influence of the overall Alzheimer's disease (AD) genetic architecture on Down syndrome (DS) status, cognitive measures, and cerebrospinal fluid (CSF) biomarkers. METHODS: AD polygenic risk scores (PRS) were tested for association with DSârelated traits. RESULTS: The AD risk PRS was associated with disease status in several cohorts of sporadic lateâ and earlyâonset and familial lateâonset AD, but not in familial earlyâonset AD or DS. On the other hand, lower DS Mental Status Examination memory scores were associated with higher PRS, independent of intellectual disability and APOE (PRS including APOE, PRS APOE , p = 2.84 Ă 10â4; PRS excluding APOE, PRS nonAPOE , p = 1.60 Ă 10â2). PRS APOE exhibited significant associations with Aβ42, tTau, pTau, and Aβ42/40 ratio in DS. DISCUSSION: These data indicate that the AD genetic architecture influences cognitive and CSF phenotypes in DS adults, supporting common pathways that influence memory decline in both traits. Highlights: Examination of the polygenic risk of AD in DS presented here is the first of its kind. AD PRS influences memory aspects in DS individuals, independently of APOE genotype. These results point to an overlap between the genes and pathways that leads to AD and those that influence dementia and memory decline in the DS population. APOE Îľ4 is linked to DS cognitive decline, expanding cognitive insights in adults