Get help now — free helplines

You can call any of these for free. You do not need a diagnosis, an appointment, or a crisis to call — questions and plain exhaustion are reasons enough.

  • Alzheimer's Association 24/7 Helpline 800-272-3900 24 hours a day, 365 days a year Free, confidential support and information for people with dementia, caregivers, families and the public. Master's-level clinicians. Also Spanish.
  • 988 Suicide & Crisis Lifeline 988 24/7 Call or text 988, or chat at 988lifeline.org. For anyone in emotional distress or a mental-health crisis, including caregivers.
  • Alzheimer's Foundation of America (AFA) Helpline 866-232-8484 9:00 am - 9:00 pm ET, seven days a week Licensed social workers providing support, info and referrals. Also text message and web chat. Text: 646-586-5283

In a medical emergency, call 911. More numbers, and what each line does, on the help page.

This page is alzhub.org's plain-English summary of a published study, not the paper itself. It is generated from the record we hold for this study, sourced and linked below — check the original for the full text and methods.

✓ Peer-reviewed alzhub usefulness score 72 out of 100. Biomarkers

Topic: Amyloid, tau and blood-test diagnosis

Results Of 343 participants, the mean (SD) age was 72.56 (7.24) years, and 157 (51.1%) were female.

Cite this study APA, Vancouver, BibTeX · download .bib or .ris

APA 7th

Leuzy, A., Smith, R., Cullen, N. C., Strandberg, O., Vogel, J. W., Binette, A. P., et al. (2022). Biomarker-Based Prediction of Longitudinal Tau Positron Emission Tomography in Alzheimer Disease. JAMA neurology. https://doi.org/10.1001/jamaneurol.2021.4654

Vancouver

Leuzy A, Smith R, Cullen NC, Strandberg O, Vogel JW, Binette AP, et al. Biomarker-Based Prediction of Longitudinal Tau Positron Emission Tomography in Alzheimer Disease. JAMA neurology. 2022. doi:10.1001/jamaneurol.2021.4654. PMID: 34928318.

BibTeX

@article{leuzy2022-34928318,
  author  = {Leuzy, A. and Smith, R. and Cullen, N. C. and Strandberg, O. and Vogel, J. W. and Binette, A. P. and Borroni, E. and Janelidze, S. and others},
  title   = {{Biomarker-Based Prediction of Longitudinal Tau Positron Emission Tomography in Alzheimer Disease}},
  journal = {JAMA neurology},
  year    = {2022},
  doi     = {10.1001/jamaneurol.2021.4654},
  pmid    = {34928318},
  url     = {https://doi.org/10.1001/jamaneurol.2021.4654}
}

Built from the record alzhub holds for this paper, not looked up. Volume, issue and page numbers are not held in the record. The record's author list ends in “et al.”, so not every author is named. Check the citation against the original before you use it.

Key findings

Why it matters

The available text reports only the age and sex of 343 participants in a cohort study. It provides no information on treating, curing or preventing Alzheimer disease.

Study details

How this study scored 72/100
How this study's score is builtJournal tier 9 of 10; Journal's citation record 2 of 4; Study design 7 of 12; Strength of evidence 3 of 5; Peer-review validation 10 of 10; How recent 3 of 5; Sample size 2 of 4; Effect reported 2 of 3; Studied in people 3 of 3; Randomised / blinded 0 of 2; Times cited 5 of 7; Citations per year 4 of 5; Impact for its field and year 4 of 6; Cited by studies here 3 of 6; Still being cited 3 of 4; Senior author's track record 4 of 4; Institution's track record 2 of 3; Multi-centre collaboration 2 of 3; Indexed in PubMed 2 of 2; Free to read 2 of 2. Total 72 of 100.72 of 100 points earned28 not earned

Published in a leading specialty journal, and it is a cohort study following people over time. Scored zero for randomised / blinded because the record does not state it.

ComponentPointsWhy
Journal tier 9 / 10 Tier 2 — leading specialty journal (JAMA neurology)
Journal's citation record 2 / 4 JAMA Neurology: journal h-index 235 (OpenAlex, 2026-10-29)
Study design 7 / 12 A cohort study following people over time
Strength of evidence 3 / 5 Rated “moderate” in our summary
Peer-review validation 10 / 10 Peer-reviewed. Published as an article in a named peer-reviewed journal.
How recent 3 / 5 2022 — within 6 year(s) of the newest study here
Sample size 2 / 4 343 participants
Effect reported 2 / 3 Effect reported as a number, without an interval or test
Studied in people 3 / 3 Studied in people (participant count stated)
Randomised / blinded 0 / 2 No randomisation or blinding stated — scores zero (not stated in the record — scored 0)
Times cited 5 / 7 Cited 149 times (OpenAlex, 2026-10-10)
Citations per year 4 / 5 24.8 citations a year over 6 year(s) since 2022
Impact for its field and year 4 / 6 Cited 16.2× the average for papers of its field and year (OpenAlex FWCI)
Cited by studies here 3 / 6 Cited by 16 other studies in this library
Still being cited 3 / 4 Cited 91 times in 2024–2026 (2026 still in progress; OpenAlex)
Senior author's track record 4 / 4 Last-listed author Oskar Hansson: h-index 148 (OpenAlex, whole career)
Institution's track record 2 / 3 University of Pennsylvania: institution h-index 1,859 (OpenAlex)
Multi-centre collaboration 2 / 3 OpenAlex lists 6 institution(s) in 4 countries
Indexed in PubMed 2 / 2 Indexed in PubMed (PMID 34928318)
Free to read 2 / 2 Free to read
Total 72 / 100 —

What each of these 20 components measures, and what this score is not →

Read the original

Full text: free to read — PubMed Central lists this copy as free to read: the link above (checked 10 Oct 2026).

Studies in the library that share something with this one. The line above each title says what.

Studies this one cites

Referenced by this study and also in the alzhub library, so you can read them here. Showing 12 of 35.

Later studies that cite this one

16 studies in the alzhub library list this one in their references. Showing the 8 highest-scoring.

Related studies in Biomarkers

Also tagged “phosphorylated”

733 studies in the library carry the topic tag “phosphorylated”; these are this study's neighbours in a fixed, alphabetical-by-hash tour of them, not the closest in content. All 733 tagged studies.

Studies sharing this one's topic tags

Similar studies

More on Biomarkers

See all studies in Biomarkers →