Evidence map›Paper›PMID 30365928›Full record

ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2019

Accurate risk estimation of β-amyloid positivity to identify prodromal Alzheimer's disease: Cross-validation study of practical algorithms.

Sebastian Palmqvist, Philip S Insel, Henrik Zetterberg, Kaj Blennow, Britta Brix, Erik Stomrud, Alzheimer's Disease Neuroimaging Initiative, Swedish BioFINDER study, Niklas Mattsson, Oskar Hansson

Abstract read
In one paragraph

Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing papers in PubMed
–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

46 citing papers in PubMed.

  1. Article
  2. Deep Learning-Based Prediction of PET Amyloid Status Using MRI.AJNR. American journal of neuroradiology · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Observational
  9. New Research on Biomarkers in Alzheimer's Continuum.Reviews on recent clinical trials · 2025
    Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Observational
  19. Article
  20. Predicting amyloid-beta pathology in the general population.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2023
    Article
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

10 authors.

Sebastian PalmqvistClinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden; Department of Neurology, Skåne University Hospital, Lund, Sweden. Electronic address: sebastian.palmqvist@med.lu.se.
Philip S InselClinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden.
Henrik ZetterbergDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden; Department of Molecular Neuroscience, UCL Institute of Neurology, Queen Square, London, United Kingdom; UK Dementia Research Institute at UCL, London, United Kingdom.
Kaj BlennowDepartment of Psychiatry and Neurochemistry, Institute of Neuroscience and Physiology, the Sahlgrenska Academy at the University of Gothenburg, Mölndal, Sweden; Clinical Neurochemistry Laboratory, Sahlgrenska University Hospital, Mölndal, Sweden.
Britta BrixEuroimmun AG, Lübeck, Germany.
Erik StomrudClinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden; Memory Clinic, Skåne University Hospital, Malmö, Sweden.
Alzheimer's Disease Neuroimaging Initiative
Swedish BioFINDER study
Niklas MattssonClinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden; Department of Neurology, Skåne University Hospital, Lund, Sweden.
Oskar HanssonClinical Memory Research Unit, Department of Clinical Sciences, Lund University, Malmö, Sweden; Memory Clinic, Skåne University Hospital, Malmö, Sweden. Electronic address: oskar.hansson@med.lu.se.

Funding

Alzheimer's Disease Neuroimaging Initiative - SupplementU01AG024904 · NIA · NORTHERN CALIFORNIA INSTITUTE RES &EDUC · PI WEINER, MICHAEL W · 2004 to 2015
$121.0M
NIA NIH HHS U01 AG024904
6 · The paper itself

Abstract

introductionThe aim was to create readily available algorithms that estimate the individual risk of β-amyloid (Aβ) positivity.

methodsThe algorithms were tested in BioFINDER (n = 391, subjective cognitive decline or mild cognitive impairment) and validated in Alzheimer's Disease Neuroimaging Initiative (n = 661, subjective cognitive decline or mild cognitive impairment). The examined predictors of Aβ status were demographics; cognitive tests; white matter lesions; apolipoprotein E (APOE); and plasma Aβ

resultsAβ status was accurately estimated in BioFINDER using age, 10-word delayed recall or Mini-Mental State Examination, and APOE (area under the receiver operating characteristics curve = 0.81 [0.77-0.85] to 0.83 [0.79-0.87]). When validated, the models performed almost identical in Alzheimer's Disease Neuroimaging Initiative (area under the receiver operating characteristics curve = 0.80-0.82) and within different age, subjective cognitive decline, and mild cognitive impairment populations. Plasma Aβ DISCUSSION: The algorithms are implemented on http://amyloidrisk.com where the individual probability of being Aβ positive can be calculated. This is useful in the workup of prodromal Alzheimer's disease and can reduce the number needed to screen in Alzheimer's disease trials.

Indexed as

AlgorithmsPredictive Value of TestsAgedAlzheimer DiseaseAmyloid beta-PeptidesApolipoproteins EBiomarkersCognitive DysfunctionFemaleHumansMalePositron-Emission TomographyAmyloid beta-PeptidesApolipoproteins EBiomarkersAlzheimer's diseaseAβ(42)Cerebrospinal fluidDiagnostic accuracyPlasma Aβ(42)/Aβ(40)Position emission tomographyPredictionRisk estimationβ-amyloid

Identifiers

PMID30365928
PMCPMC6374284

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.