ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2026
Neurobiological markers across joint profiles of subjective cognitive decline and objective cognitive function in older adults.
Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02875301 (Investigating Gains in Neurocognition in an Intervention Trial of Exercise), which is not on this map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Investigating Gains in Neurocognition in an Intervention Trial of Exercise
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21 authors.
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Abstract
introductionSubjective cognitive concerns frequently diverge from objective cognitive performance in cognitively unimpaired (CU) older adults, yet the neurobiological basis of this mismatch remains unclear.
methodsIn 648 participants from the Investigating Gains in Neurocognition in an Intervention Trial of Exercise (IGNITE), we defined four profiles by integrating subjective and objective cognitive status. We examined associations with plasma neurofilament light chain (NfL), phosphorylated tau 217 (p-tau217), glial fibrillary acidic protein (GFAP), a magnetic resonance imaging-based volumetric Alzheimer's disease (AD) signature reflecting atrophy, and brain-predicted age difference (brain-PAD).
resultsJoint profiles were differentially associated with NfL (P = 0.0427) and brain-PAD (P = 0.0296). Follow-up contrasts further indicated higher NfL and lower volumetric AD signature in the concordant lower functioning profile, and higher brain-PAD in discordant profiles. p-tau217 and GFAP did not differ across profiles. DISCUSSION: Joint subjective-objective cognitive profiles may capture biologically meaningful heterogeneity relevant to neurodegeneration and brain aging in older adults.
trial registrationClinicalTrials.gov: NCT02875301.
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