Evidence map›Paper›PMID 39448295›Full record

ArticleThe American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry2025

Where Do Plasma Biomarkers fit in With Current Alzheimer's Disease Detection?

Ariel Gildengers, Andrea M Weinstein, Swathi Gujral, Xuemei Zeng, Jihui L Diaz, Tara K Lafferty, Matthew Cowie, James E Emanuel, Oscar Lopez, Sarah K Royse and 2 more

Erratum issuedAbstract read
In one paragraph

Article in The American journal of geriatric psychiatry : official journal of the American Association for Geriatric Psychiatry, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 12 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

12 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Diagnostic accuracy of plasma p-tau217 against amyloid PET: A meta-analysis of technical platform variability and ratio versus single marker comparisons.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

12 authors.

Ariel GildengersDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA. Electronic address: ariel.gildengers@pitt.edu.
Andrea M WeinsteinDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Swathi GujralDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Xuemei ZengDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Jihui L DiazDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Tara K LaffertyDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Matthew CowieDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
James E EmanuelDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Oscar LopezDepartment of Neurology (OL), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Sarah K RoyseDepartment of Radiology (SKR, BL), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Brian LoprestiDepartment of Radiology (SKR, BL), University of Pittsburgh School of Medicine, Pittsburgh, PA.
Thomas K KarikariDepartment of Psychiatry (AG, AMW, SG, XZ, TKL, MC, JEE, TKK), University of Pittsburgh School of Medicine, Pittsburgh, PA.

Funding

Vascular Moderators of the Impact of Alzheimer's Pathology in the Young-OldP01AG025204 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Milos D Ikonomovic · 2005 to 2026
$56.5M
Longitudinal multicenter head-to-head harmonization of tau PET tracersR01AG073267 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BAKER, SUZANNE L, PASCOAL, THARICK · 2021 to 2025
$41.1M
Research Education ComponentP30AG066468 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI HOWARD J AIZENSTEIN · 2020 to 2026
$29.4M
Investigating Gains in Neurocognition in an Intervention Trial of Exercise SupplementR01AG053952 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI BURNS, JEFFREY MURRAY, ERICKSON, KIRK I · 2016 to 2020
$27.5M
Mild Cognitive Impairment: A Prospective Community StudyR37AG023651 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Carmen Andreescu, MARY GANGULI · 2021 to 2026
$18.2M
Plasma brain-derived tau: a novel Alzheimer’s disease-type neurodegeneration biomarker with potential to complete the AT(N) scheme in bloodR01AG083874 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Thomas K Karikari · 2023 to 2026
$14.5M
Predictors of Altered CNS Structure, Function, and Connectomics in the Elderly using a Health Disparities FrameworkR01AG072641 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Ann D. Cohen · 2022 to 2026
$9.6M
Subclinical vascular disease and AD pathology in the transition from midlife to old ageRF1AG052525 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LOPEZ, OSCAR L., REIS, STEVEN E · 2018 to 2018
$9.3M
Roles of Gray Matter Brain Aging and Small Vessel Disease in AD PathophysiologyRF1AG025516 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI AIZENSTEIN, HOWARD J, VILLEMAGNE, VICTOR LUIS · 2014 to 2021
$9.0M
Alzheimer Diagnosis in older Adults with Chronic Conditions ADACC NetworkU24AG082930 · NIA · WAKE FOREST UNIVERSITY HEALTH SCIENCES · PI Nicole R. Fowler, Thomas K Karikari · 2023 to 2026
$7.3M
Evaluation of Brain and Cognitive Changes in Older Adults with MCI Taking Lithium to Prevent Alzheimer Type DementiaR01AG055389 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GILDENGERS, ARIEL GERARD · 2017 to 2023
$5.4M
Head-to-head comparisons of high-performance plasma phospho-tau epitopes for the detection of Alzheimer's diseaseR01AG075336 · NIA · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Tharick Pascoal · 2022 to 2026
$3.7M
NIA NIH HHS K23 AG076663NIA NIH HHS P01 AG025204NIA NIH HHS P30 AG066468NIA NIH HHS R01 AG053952NIA NIH HHS R01 AG055389NIA NIH HHS R01 AG072641NIA NIH HHS R01 AG073267NIA NIH HHS R01 AG075336NIA NIH HHS R01 AG083874NIA NIH HHS R37 AG023651NIA NIH HHS RF1 AG025516NIA NIH HHS RF1 AG052525NIA NIH HHS U24 AG082930NIMH NIH HHS K23 MH125074
6 · The paper itself

Abstract

objectivesWe examine the clinical utility of plasma-based detection for Alzheimer's disease (AD) pathophysiology in older adults with mild cognitive impairment (MCI) and whether cognitive screening can inform when to use plasma-based AD tests.

methodsSeventy-four community-dwelling older adults with MCI had testing with plasma phosphorylated tau (p-tau) 217 and 181, positron emission tomography (PET) imaging for amyloid beta (Aβ), and cognitive assessment. Receiver operating characteristic (ROC) analysis was used to assess the diagnostic value of plasma p-tau.

resultsPlasma p-tau217 distinguished MCI participants who had PET imaging evidence of Aβ accumulation from those without (AUC of 0.92, specificity of 0.96, and sensitivity of 0.90), outperforming plasma p-tau181 (AUC of 0.76, specificity of 0.87 and sensitivity of 0.59) for the same purpose. Of the 60 MCI participants that were amnestic, 22 were Aβ+. The 14 participants that were nonamnestic were all Aβ-.

conclusionsOur findings support the clinical use of plasma p-tau, particularly p-tau217, for patient detection of AD pathophysiology in older adults with amnestic MCI, but not in those who are nonamnestic.

Indexed as

Alzheimer DiseaseAmyloid beta-PeptidesCognitive Dysfunctiontau ProteinsAgedAged, 80 and overBiomarkersFemaleHumansMaleNeuropsychological TestsPositron-Emission TomographyROC CurveSensitivity and SpecificityAmyloid beta-PeptidesBiomarkersMAPT protein, humantau ProteinsAlzheimer's diseasediagnostic testsmild cognitive impairmentp-tau181p-tau217

Identifiers

PMID39448295
PMCPMC11875946

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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.