ArticleThe Lancet. Neurology2025
Prediction of amyloid and tau brain deposition and cognitive decline in people with Down syndrome using plasma biomarkers: a longitudinal cohort study.
Article in The Lancet. Neurology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- The link between plasma and cognitive markers for Alzheimer's disease in Down syndrome: a longitudinal study.Journal of neurology · 2026Article
- Longitudinal Dynamics of the Blood Proteome Within the Alzheimer Spectrum in Down Syndrome.Neurology · 2026Article
- CSF and plasma tau biomarkers in the Down syndrome-Alzheimer's disease continuum.EBioMedicine · 2026Article
- Exploring automated plasma phospho-tau217 assays for the diagnosis of Down syndrome-related Alzheimer's disease.Communications medicine · 2026Article
- Role of Pentacyclic Triterpenes in the Management of Neurological Disorders: An Insight into Molecular Mechanisms and Therapeutic Approaches.Molecular neurobiology · 2026Review
- Neuropathological measures of increased tau phosphorylation across the Down syndrome lifespan.Acta neuropathologica · 2026Article
- Blood-based biomarkers for Alzheimer's disease diagnosis: a joint position paper from the Italian Societies of Neurology (SIN) and of Clinical Biochemistry and Clinical Molecular Biology - Laboratory Medicine(SIBioC) and from the Autonomous Association affiliated with SIN for dementia (SINdem).Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026Article
- Limbic-predominant neuroimaging correlates of plasma p-Tau217 in preclinical and clinical Alzheimer's disease.Frontiers in aging neuroscience · 2026Article
- Plasma p-tau217 as a biomarker of Alzheimer's disease pathology in individuals with Down syndrome.Nature communications · 2025Observational
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22 authors.
Funding
Abstract
backgroundPlasma biomarkers associated with Alzheimer's disease could improve prognostic assessment for people with Down syndrome in both clinical practice and research settings. We aimed to identify the plasma biomarkers that most accurately predict longitudinal changes in Alzheimer's disease-related pathology and cognitive functioning in individuals with Down syndrome.
methodsThis longitudinal cohort study included data from 258 adults (aged ≥25 years) with Down syndrome who were followed up prospectively every 16 months as part of the longitudinal Alzheimer's Biomarker Consortium-Down Syndrome study (recruited from seven university sites in the USA and UK between July 13, 2016, and Jan 15, 2019). Participants had baseline and longitudinal assessments of plasma tau phosphorylated at threonine 217 (p-tau217), glial fibrillary acidic protein (GFAP), amyloid β (Aβ)
findingsBaseline p-tau217, as well as GFAP, NfL, or t-tau, were individually associated with longitudinal changes in DS-MSE, Aβ-PET, and tau-PET, and with progression to dementia. However, in combined models, only baseline p-tau217 remained associated with changes in DS-MSE (β -0·30 [95% CI -0·45 to -0·15], p=0·0001, n=220), tau-PET (0·42 [0·14 to 0·70], p=0·0039, n=88), and progression to dementia (hazard ratio 3·51 [95% CI 1·76-7·00], p=0·0004, n=194), whereas baseline p-tau217 (0·29 [0·14-0·45], p=0·0003) and GFAP (0·37 [0·18-0·56], p=0·0003) were associated with changes in Aβ-PET (n=106 for both). Similar associations were shown between longitudinal p-tau217 or GFAP and changes in DS-MSE (p-tau217: β -0·33 [95% CI-0·52 to -0·13], p=0·0015, n=133), tau-PET (p-tau217: 0·61 [0·40 to 0·83], p<0·0001, n=87), and Aβ-PET (p-tau217: 0·35 [0·19 to 0·50], p<0·0001; GFAP: 0·49 [0·27 to 0·70], p<0·0001, n=88).
interpretationBaseline and longitudinal plasma p-tau217 were associated with subsequent decline in global cognition, progression to dementia, and increased tau burden, whereas baseline p-tau217 and GFAP were associated with Aβ accumulation. These findings suggest that plasma p-tau217 and GFAP might be valuable for prognostic assessment of Alzheimer's disease in people with Down syndrome in both clinical and research contexts. The results further support evaluation of these biomarkers for monitoring disease progression in clinical trials of Down syndrome-related Alzheimer's disease.
fundingThe European Research Council and National Institute on Aging (National Institute of Health).
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