Alzheimer's disease risk variants modulate endophenotypes in mild cognitive impairment

Abstract: Introduction
We evaluated the effect of Alzheimer's disease (AD) susceptibility loci on endophenotypes closely related with AD pathology in patients with mild cognitive impairment (MCI).

Methods
We selected 1730 MCI patients from four independent data sets. Weighted polygenic risk scores (PGS) were constructed of 18 non-apolipoprotein E (APOE) AD risk variants. In addition, we determined APOE genotype. AD endophenotypes were cognitive decline over time and cerebrospinal fluid (CSF) biomarkers (aβ, tau, ptau).

Results
PGS was modestly associated with cognitive decline over time, as measured by mini-mental state examination (MMSE) (β ± SE:−0.24 ± 0.10; P = .012), and with CSF levels of tau and ptau (tau: 1.38 ± 0.36, P = 1.21 × 10−4; ptau: 1.40 ± 0.36, P = 1.02 × 10−4).

Discussion
In MCI, we observed a joint effect of AD susceptibility loci on nonamyloid endophenotypes, suggesting a link of these genetic loci with neuronal degeneration in general rather than with Alzheimer-related amyloid deposition

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch
Notes
Alzheimer's and dementia. - 12, 8 (2016) , 872-881, ISSN: 1552-5279

Event
Veröffentlichung
(where)
Freiburg
(who)
Universität
(when)
2021

DOI
10.1016/j.jalz.2016.01.006
URN
urn:nbn:de:bsz:25-freidok-1750480
Rights
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Last update
25.03.2025, 1:53 PM CET

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Associated

Time of origin

  • 2021

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