Open AccessMarkers of early changes in cognition across cohorts of adults with Down syndrome at risk of Alzheimer's disease
Author(s) -
Aschenbrenner Andrew J.,
Baksh R. Asaad,
Benejam Bessy,
BeresfordWebb Jessica A.,
Coppus Antonia,
Fortea Juan,
Handen Benjamin L.,
Hartley Sigan,
Head Elizabeth,
Jaeger Judith,
Levin Johannes,
Loosli Sandra V.,
Rebillat AnneSophie,
Sacco Silvia,
Schmitt Frederick A.,
Thurlow Kate E.,
Zaman Shahid,
Hassenstab Jason,
Strydom Andre
Publication year - 2021
Publication title -
alzheimer's and dementia: diagnosis, assessment and disease monitoring
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.497
H-Index - 37
ISSN - 2352-8729
DOI - 10.1002/dad2.12184
Subject(s) - cognition , dementia , disease , cognitive decline , alzheimer's disease , cognitive test , medicine , psychology , clinical psychology , gerontology , psychiatry
Down syndrome (DS), a genetic variant of early onset Alzheimer's disease (AD), lacks a suitable outcome measure for prevention trials targeting pre‐dementia stages. Methods We used cognitive test data collected in several longitudinal aging studies internationally from 312 participants with DS without dementia to identify composites that were sensitive to change over time. We then conducted additional analyses to provide support for the utility of the composites. The composites were presented to an expert panel to determine the most optimal cognitive battery based on predetermined criteria. Results There were common cognitive domains across site composites, which were sensitive to early decline. The final composite consisted of memory, language/executive functioning, selective attention, orientation, and praxis tests. Discussion We have identified a composite that is sensitive to early decline and thus may have utility as an outcome measure in trials to prevent or delay symptoms of AD in DS.