Evidence map›Paper›PMID 34077494›Full record

Trial reportBrain : a journal of neurology2021

Plasma markers predict changes in amyloid, tau, atrophy and cognition in non-demented subjects.

Joana B Pereira, Shorena Janelidze, Erik Stomrud, Sebastian Palmqvist, Danielle van Westen, Jeffrey L Dage, Niklas Mattsson-Carlgren, Oskar Hansson

Open access · hybridAbstract readClinical Trial
In one paragraph

Trial report in Brain : a journal of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 99 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
99citing papers in PubMed, 2 pooled it
16.0field-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

99 citing papers in PubMed, 2 syntheses or guidelines pooled it, 143 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Dulaglutide and neurodegeneration biomarkers: REWIND post hoc analysis.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
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  6. Excitation-inhibition imbalance links amyloid pathophysiology to cognition in non-demented individuals.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
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39 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 2 institutions in 2 countries.

Joana B PereiraClinical Memory Research Unit, Department of Clinical Sciences, Lund University, SE-20502 Malmö, Sweden.ORCID 0000-0002-3579-8804
Shorena JanelidzeClinical Memory Research Unit, Department of Clinical Sciences, Lund University, SE-20502 Malmö, Sweden.
Erik StomrudClinical Memory Research Unit, Department of Clinical Sciences, Lund University, SE-20502 Malmö, Sweden.
Sebastian PalmqvistClinical Memory Research Unit, Department of Clinical Sciences, Lund University, SE-20502 Malmö, Sweden.
Danielle van WestenDiagnostic Radiology, Department of Clinical Sciences Lund, Lund University, 221 85 Lund, Sweden.ORCID 0000-0001-8649-9874
Jeffrey L DageEli Lilly and Company, Indianapolis, IN 46225, USA.
Niklas Mattsson-CarlgrenClinical Memory Research Unit, Department of Clinical Sciences, Lund University, SE-20502 Malmö, Sweden.ORCID 0000-0002-8885-7724
Oskar HanssonClinical Memory Research Unit, Department of Clinical Sciences, Lund University, SE-20502 Malmö, Sweden.
Lund University · SEEli Lilly (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

It is currently unclear whether plasma biomarkers can be used as independent prognostic tools to predict changes associated with early Alzheimer's disease. In this study, we sought to address this question by assessing whether plasma biomarkers can predict changes in amyloid load, tau accumulation, brain atrophy and cognition in non-demented individuals. To achieve this, plasma amyloid-β 42/40 (Aβ42/40), phosphorylated-tau181, phosphorylated-tau217 and neurofilament light were determined in 159 non-demented individuals, 123 patients with Alzheimer's disease dementia and 35 patients with a non-Alzheimer's dementia from the Swedish BioFINDER-2 study, who underwent longitudinal amyloid (18F-flutemetamol) and tau (18F-RO948) PET, structural MRI (T1-weighted) and cognitive testing. Our univariate linear mixed effect models showed there were several significant associations between the plasma biomarkers with imaging and cognitive measures. However, when all biomarkers were included in the same multivariate linear mixed effect models, we found that increased longitudinal amyloid-PET signals were independently predicted by low baseline plasma Aβ42/40 (P = 0.012), whereas increased tau-PET signals, brain atrophy and worse cognition were independently predicted by high plasma phosphorylated-tau217 (P < 0.004). These biomarkers performed equally well or better than the corresponding biomarkers measured in the CSF. In addition, they showed a similar performance to binary plasma biomarker values defined using the Youden index, which can be more easily implemented in the clinic. In addition, plasma Aβ42/40 and phosphorylated-tau217 did not predict longitudinal changes in patients with a non-Alzheimer's neurodegenerative disorder. In conclusion, our findings indicate that plasma Aβ42/40 and phosphorylated-tau217 could be useful in clinical practice, research and drug development as prognostic markers of future Alzheimer's disease pathology.

Indexed as

Neuropsychological TestsAdaptor Proteins, Signal TransducingAdultAgedAged, 80 and overAmyloid beta-PeptidesAtrophyBiomarkersBrainCohort StudiesFemaleHumansLongitudinal StudiesMaleMiddle AgedPeptide FragmentsAdaptor Proteins, Signal TransducingAmyloid beta-Peptidesamyloid beta-protein (1-40)amyloid beta-protein (1-42)BiomarkersPeptide FragmentsTUB protein, humanamyloid-βcognitionMRIPETplasma biomarkerstau PET

Identifiers

PMID34077494
PMCPMC8557344
OpenAlexW3165581912

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.