ArticleAlzheimer's & dementia : the journal of the Alzheimer's Association2025
Diagnostic accuracy of plasma p-tau217/Aβ42 for Alzheimer's disease in clinical and community cohorts.
Article in Alzheimer's & dementia : the journal of the Alzheimer's Association, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07779863 (Caregiver-administered Acupressure as Long-term Intervention to Slow the Progression of Early/Mild Alzheimer's Disease With Blood Amyloid and Tau Biomarkers), which is not on this map. Cited by 79 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
Caregiver-administered Acupressure as Long-term Intervention to Slow the Progression of Early/Mild Alzheimer's Disease With Blood Amyloid and Tau Biomarkers: a Randomized Controlled Trial
Who cites it
79 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- 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 · 2026Pooled it
- From Cerebrospinal Fluid to Blood Draw: Plasma p-Tau217 as a Non-Invasive Biomarker for Alzheimer's Disease: A Fagan Nomogram-Based Meta-Analytic Study.Molecular neurobiology · 2026Pooled it
- Effect of 6-week tadalafil treatment on blood-based biomarkers of neurodegeneration: A post-hoc analysis of a randomized controlled trial.Journal of Alzheimer's disease : JAD · 2026Trial
- Trial
- Quantitative Relationship Between Lumipulse G Measures of pTau217 in Plasma and the Temporal Cortex.Neurology · 2026Article
- Plasma Glial Fibrillary Acidic Protein and Neurofilament Light Chain Concentrations Are Inversely Associated with Retinal Microvascular Perfusion and Vessel Density in Cognitively Normal Individuals with Familial or Genetic Risk Factors for Alzheimer's Disease.Diagnostics (Basel, Switzerland) · 2026Article
- Overview in Electrochemical and Electrical Biosensors for Determining Blood Protein Biomarkers of Alzheimer's Disease.Biosensors · 2026Review
- Plasma brain-derived p-Tau217 outperforms other p-Tau species in detecting abnormal brain amyloid in an Asian cohort of older people with cerebrovascular disease burden.The journal of prevention of Alzheimer's disease · 2026Observational
- Plasma p-tau217 measured by the Elecsys automated immunoassay: Prospective validation in a heterogeneous memory clinic cohort.Journal of Alzheimer's disease : JAD · 2026Article
- Optimized plasma p-tau217 and p-tau217/Aβ42 cutoffs enhance detection of pre-clinical Alzheimer's disease across diverse participants.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Observational
- Diagnostic performance of an automated plasma p-tau217 chemiluminescent assay for detecting Aβ pathology in a Chinese memory clinic cohort.The journal of prevention of Alzheimer's disease · 2026Article
- Biomarkers in preclinical and early Alzheimer's disease in China: a scoping review.The journal of prevention of Alzheimer's disease · 2026Article
- Optimization and Validation of Plasma-Based Assay for Detection and Quantification of Monoamine Neurotransmitter Metabolites Using LC-MS/MS.ACS omega · 2026Article
- A Comparative Study of Plasma Biomarkers of Neurodegeneration in Rhesus Monkeys (bioRxiv : the preprint server for biology · 2026Article
- Review
- Microglial checkpoint collapse in Alzheimer's disease: a tri-axial framework for biomarker-informed neuroimmune therapy.Journal of neuroinflammation · 2026Review
- Multicenter validation of plasma p-tau217/ amyloid beta 1-42 ratio in symptomatic Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Diagnostic Performance and Clinical Utility of Automated Plasma Amyloid-β 1-42/1-40 Assay.Diagnostics (Basel, Switzerland) · 2026Article
- MRI-to-PET synthesis via deep learning for amyloid-β quantification in Alzheimer's disease.European radiology · 2026Article
- SRSF1 as a promising biomarker and key player in the pathogenesis of Alzheimer's disease.Molecular medicine reports · 2026Article
19 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
27 authors.
Funding
Abstract
introductionThis study was undertaken to evaluate the diagnostic performance of a novel plasma phosphorylated tau (p-tau) 217/amyloid beta (Aβ) 42 ratio test for Alzheimer's disease (AD).
methodsThe diagnostic performance of the Lumipulse G plasma p-tau217/Aβ42 ratio was evaluated using Aβ and tau positron emission tomography (PET) as reference standards in a clinic cohort (n = 391) and a community cohort (n = 121).
resultsPlasma p-tau217/Aβ42 exhibited high performance for abnormal statuses of Aβ PET (area under the curve [AUC]: 0.963 to 0.966) and tau PET (AUC: 0.947 to 0.974), which were clinically equivalent to those of cerebrospinal fluid (CSF) p-tau181/Aβ42 and Aβ42/Aβ40 and higher than those of blood p-tau217, Aβ42/Aβ40, p-tau181, and p-tau181/Aβ42 in both clinic and community cohorts. Applying a two-cutoff approach improved the specificity without reducing sensitivity. The p-tau217/Aβ42 ratio had a lower intermediate percentage than p-tau217 alone in both clinic (10.6% vs 13.0%) and community (16.5% vs 31.4%) cohorts. DISCUSSION: Plasma p-tau217/Aβ42 has high performance in detecting cerebral AD pathologies, thus offering a promising tool for clinical diagnosis and community screening of AD. HIGHLIGHTS: Lumipulse G plasma p-tau217 and the p-tau217/Aβ42 ratio accurately identified abnormal Aβ and tau PET statuses in both clinical and community cohorts. The performance of plasma p-tau217 and p-tau217/Aβ42 ratio were equivalent to CSF tests. Plasma p-tau217/Aβ42 ratio outperformed p-tau217 alone in identifying Aβ PET positivity, and this superiority is more obvious in the community cohort, suggesting an advantage in the early diagnosis of AD. Two cut points of p-tau217/Aβ42 were established in the Chinese population for clinical laboratory and community screening uses.
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