Cited by 141Dementia and Cognitive Impairment ResearchAlzheimer's disease research and treatmentsMedical Imaging Techniques and Applications

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Associations between [ 18 F]AV1451 tau PET and CSF measures of tau pathology in a clinical sample

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Abstract

Objective To assess the relationships between fluid and imaging biomarkers of tau pathology and compare their diagnostic utility in a clinically heterogeneous sample. Methods Fifty-three patients (28 with clinical Alzheimer disease [AD] and 25 with non-AD clinical neurodegenerative diagnoses) underwent β-amyloid (Aβ) and tau ([18F]AV1451) PET and lumbar puncture. CSF biomarkers (Aβ42, total tau [t-tau], and phosphorylated tau [p-tau]) were measured by multianalyte immunoassay (AlzBio3). Receiver operator characteristic analyses were performed to compare discrimination of Aβ-positive AD from non-AD conditions across biomarkers. Correlations between CSF biomarkers and PET standardized uptake value ratios (SUVR) were assessed using skipped Pearson correlation coefficients. Voxelwise analyses were run to assess regional CSF–PET associations. Results [18F]AV1451-PET cortical SUVR and p-tau showed excellent discrimination between Aβ-positive AD and non-AD conditions (area under the curve 0.92–0.94; ≤0.83 for other CSF measures), and reached 83% classification agreement. In the full sample, cortical [18F]AV1451 was associated with all CSF biomarkers, most strongly with p-tau (r = 0.75 vs 0.57 for t-tau and −0.49 for Aβ42). When restricted to Aβ-positive patients with AD, [18F]AV1451 SUVR correlated modestly with p-tau and t-tau (both r = 0.46) but not Aβ42 (r = 0.02). On voxelwise analysis, [18F]AV1451 correlated with CSF p-tau in temporoparietal cortices and with t-tau in medial prefrontal regions. Within AD, Mini-Mental State Examination scores were associated with [18F]AV1451-PET, but not CSF biomarkers. Conclusion [18F]AV1451-PET and CSF p-tau had comparable value for differential diagnosis. Correlations were robust in a heterogeneous clinical group but attenuated (although significant) in AD, suggesting that fluid and imaging biomarkers capture different aspects of tau pathology. Classification of evidence This study provides Class III evidence that, in a clinical sample of patients with a variety of suspected neurodegenerative diseases, both CSF p-tau and [18F]AV1451 distinguish AD from non-AD conditions.

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Metadata

Authors
La Joie, R., Bejanin, A., Fagan, A. M., Ayakta, N., Baker, S. L., Bourakova, V., Boxer, A. L., Cha, J., Karydas, A., Jerome, G., Maass, A., Mensing, A., Miller, Z. A., O'Neil, J. P., Pham, J., Rosen, H. J., Tsai, R., Visani, A. V., Miller, B. L., Jagust, W. J., & Rabinovici, G. D.
Affiliations
  • From the Memory and Aging Center (R.L.J., A.B., N.A., V.B., A.L.B., J.C., A.K., A.M., Z.A.M., J.P., H.J.R., R.T., A.V., B.L.M., G.D.R.), University of California San Francisco; Knight Alzheimer's Disease Research Center (A.M.F., G.J.), Department of Neurology (A.M.F., G.J.), and The Hope Center for Neurological Disorders (A.M.F., G.J.), Washington University in St. Louis, MO; Molecular Biophysics and Integrated Bioimaging Division (S.L.B., J.P.O., W.J.J.), Lawrence Berkeley National Laboratory,...
  • Lawrence Berkeley National Laboratory (US)
Venue
Neurology
Published
2018-01-23
Volume
90
Issue
4
Pages
e282-e290
ISSN
  • 0028-3878 (ISSN-L)
  • 1526-632X
OpenAlex
W2781092115
Cited by
141
References
10
Citations by year
2026: 3 · 2025: 7 · 2024: 13 · 2023: 14 · 2022: 24 · 2021: 28 · 2020: 28 · 2019: 17 · 2018: 7
FWCI
11.68
Type
journal article
Language
en
Open access
Locations
  • Neurology (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • Alzheimer's Association (P50 AG023501, 443577, AARF-16-443577, 16-443577)
  • National Institute on Aging (R01AG045611, K23AG048291, R01AG032306, P50AG005681, P01AG003991, K24AG045333, R01AG038791, P01AG019724, R01AG034570, P01AG026276, P50AG023501)
  • National Institute of Neurological Disorders and Stroke (U54NS092089)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Alzheimer's disease research and treatments
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Medical Imaging Techniques and Applications
Keywords
18F-AV-1451, tau PET, tau pathology, phosphorylated tau, cerebrospinal fluid biomarkers, Alzheimer's disease, differential diagnosis, amyloid-beta, total tau, neurodegenerative diseases, diagnostic accuracy, cognitive impairment, temporoparietal cortex
MeSH terms
Aged, Brain, Carbolines, Cross-Sectional Studies, Diagnosis, Differential, Female, Humans, Male, Middle Aged, Peptide Fragments, Phosphorylation, Retrospective Studies, ROC Curve, Severity of Illness Index, Biomarkers, Amyloid beta-Peptides, tau Proteins, Radiopharmaceuticals, Area Under Curve, Neurodegenerative Diseases

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