Evidence map›Paper›PMID 32799383›Full record

ArticleAnnals of neurology2020

Remote Blood Biomarkers of Longitudinal Cognitive Outcomes in a Population Study.

Kumar B Rajan, Neelum T Aggarwal, Elizabeth A McAninch, Jennifer Weuve, Lisa L Barnes, Robert S Wilson, Charles DeCarli, Denis A Evans

Open access · greenAbstract read
In one paragraph

Article in Annals of neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 106 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
106citing papers in PubMed, 3 pooled it
15.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

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.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

106 citing papers in PubMed, 3 syntheses or guidelines pooled it, 152 citations in OpenAlex.

  1. Pooled it
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  4. Trial
  5. Review
  6. Article
  7. The role of polygenic risk in Alzheimer's disease prediction for African Americans.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
    Observational
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  10. Journal of Korean medical science · 2026
    Article
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46 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 5 institutions in 1 country.

Kumar B RajanDepartment of Public Health Sciences, University of California, Davis, CA, USA.ORCID 0000-0001-7685-2101
Neelum T AggarwalRush Alzheimer's Disease Center, Chicago, IL, USA.
Elizabeth A McAninchDepartment of Internal Medicine, Rush University Medical Center, Chicago, IL, USA.
Jennifer WeuveDepartment of Epidemiology, Boston University School of Public Health, Boston, MA, USA.
Lisa L BarnesRush Alzheimer's Disease Center, Chicago, IL, USA.
Robert S WilsonRush Alzheimer's Disease Center, Chicago, IL, USA.
Charles DeCarliDepartment of Neurology, University of California at Davis, Sacramento, CA, USA.
Denis A EvansDepartment of Internal Medicine, Rush University Medical Center, Chicago, IL, USA.
Rush University · USRush University Medical Center · USAlzheimer’s Disease Neuroimaging Initiative · USBoston University · USUniversity of California, Davis · US

Funding

Preserving Cognitive Resilience: A Biracial Parent-Offspring Study (18-4674) - Feasibility StudyR01AG058679 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI EVANS, DENIS A, RAJAN, KUMAR B. · 2019 to 2024
$13.8M
Factors Influencing Decline in AD Trends in a Biracial Population StudyRF1AG057532 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI RAJAN, KUMAR B. · 2017 to 2017
$1.7M
Nonlinear Models of Cognition Preceding AD in a Biracial Population SampleR01AG051635 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI RAJAN, KUMAR B. · 2016 to 2020
$1.5M
NIA NIH HHS R01 AG051635NIA NIH HHS R01 AG058679NIA NIH HHS RF1 AG057532
6 · The paper itself

Abstract

objectiveThe longitudinal association of the blood biomarkers total tau (t-tau), neurofilament light (Nf-L), and glial fibrillary acidic protein (GFAP) with common sporadic Alzheimer disease (AD) and cognitive decline is not established.

methodsUsing a single molecule array technology, ultrasensitive immunoassays for serum concentrations of t-tau, Nf-L, and GFAP were measured in a population sample of 1,327 participants (60% African Americans and women) who had a clinical evaluation for AD, had completed in-home cognitive assessments, and had undergone 1.5T structural magnetic resonance imaging.

resultsHigher concentrations of serum biomarkers were associated with the development of clinical AD; especially, the time-specific associations were notable: t-tau 8 to 16 years, and Nf-L and GFAP 4 to 8 years prior to clinical AD. Serum biomarkers were associated with faster cognitive decline over 16 years; baseline t-tau > 0.40pg/ml had 30% faster decline, Nf-L > 25.5pg/ml had 110% faster decline, and GFAP > 232pg/ml had 130% faster decline compared to those in the lowest quartile. Participants with baseline GFAP > 232pg/ml showed 160% faster decline in hippocampal volume compared to those with values < 160pg/ml. Additionally, higher baseline t-tau was associated with faster increase in 3rd ventricular volume, and baseline Nf-L and GFAP were associated with faster decline in cortical thickness.

interpretationSerum t-tau, Nf-L, and GFAP predict the development of sporadic AD and cognitive decline, and changes in structural brain characteristics, suggesting their usefulness not only as screening and predictive biomarkers, but also in capturing the pathogenesis of Alzheimer dementia. ANN NEUROL 2020;88:1065-1076.

Indexed as

AgedAlzheimer DiseaseBiomarkersCerebral CortexCognitive DysfunctionEarly DiagnosisFemaleGlial Fibrillary Acidic ProteinHippocampusHumansMagnetic Resonance ImagingMaleNeurofilament ProteinsNeuroimagingPredictive Value of Teststau ProteinsBiomarkersGFAP protein, humanGlial Fibrillary Acidic Proteinneurofilament protein LNeurofilament Proteinstau Proteins

Identifiers

PMID32799383
PMCPMC9186023
OpenAlexW3049747840

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.