ArticleAnnals of neurology2022
α-Synuclein Seed Amplification in CSF and Brain from Patients with Different Brain Distributions of Pathological α-Synuclein in the Context of Co-Pathology and Non-LBD Diagnoses.
Article in Annals of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.
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Who cites it
84 citing papers in PubMed, 103 citations in OpenAlex.
- Mapping the dual functional organization of the substantia nigra.Molecular psychiatry · 2026Article
- Inter-assay and Inter-site Performance of Alpha-Synuclein Seed Amplification Assays in Synucleinopathies: A Multicenter 2 × 2 Protocol Comparison.Neurology and therapy · 2026Article
- Agentic AI for scaling diagnosis and care in neurodegenerative disease.Nature aging · 2026Review
- Deep learning-based MRI analysis reveals Lewy body co-pathology accelerates brain aging in Alzheimer's disease.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Characterizing the MRI signature of hippocampal sclerosis of aging.Alzheimer's research & therapy · 2026Article
- A Systematic Comparison of Alpha-Synuclein Seed Amplification Assays for Increasing Reproducibility.Annals of clinical and translational neurology · 2026Review
- Effects of α-synuclein pathology on synaptic dysfunction and clinical outcomes in normal aging.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Discordance of Dopaminergic Dysfunction and Subcortical Atrophy by α-Synuclein Status in Sporadic and Genetic Parkinson's Disease.Movement disorders : official journal of the Movement Disorder Society · 2026Article
- Clinical correlates of a negative cerebrospinal fluid α-synuclein seed amplification assay result in Parkinson's disease.NPJ Parkinson's disease · 2026Article
- Biological classification of memory clinic patients.Brain : a journal of neurology · 2026Article
- Skin Biopsy for Phosphorylated α-Synuclein in Mild Cognitive Impairment or Dementia Due to Lewy Body Disease in a Convenience Cohort from a Subspecialty Behavioral Neurology Practice.Movement disorders : official journal of the Movement Disorder Society · 2026Article
- Metabolic brain networks in dementia with Lewy bodies: from prodromal to manifest disease stages.Journal of neurology, neurosurgery, and psychiatry · 2026Article
- α-synuclein positivity is associated with decline in brain microstructure in the Alzheimer's disease spectrum.Alzheimer's research & therapy · 2026Article
- Sex-Specific Associations of α-Synuclein Pathology With Tau Accumulation.JAMA network open · 2026Article
- Alpha-synuclein co-pathology in a real-world early Alzheimer's disease cohort.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026Article
- Analysis of α-synuclein seed amplification assay in carriers ofJournal of Parkinson's disease · 2026Article
- Where do PDD and DLB SYNdromes fit in neuronal alpha-SYNuclein biological frameworks?Journal of neural transmission (Vienna, Austria : 1996) · 2026Review
- Microfluidic nanomagnetically isolated neuron- and astrocyte-derived extracellular vesicles to differentiate Lewy body and Alzheimer's disease.Npj biosensing · 2026Article
- Deep learning for FDG-PET classification in patients with Alzheimer's disease, dementia with Lewy bodies and their mixed pathology: a solution for diagnostic heterogeneity.Frontiers in aging neuroscience · 2026Article
- Plasma multi-miRNA models classify Alzheimer's, Parkinson's, and Lewy body dementia.Frontiers in aging neuroscience · 2026Article
24 more citing papers are in PubMed but not listed here.
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Authors and funding
14 authors at 4 institutions in 1 country.
Funding
Abstract
objectiveThe purpose of this study was to determine the sensitivity and specificity of α-synuclein seed amplification assay (αSyn-SAA) in antemortem and postmortem cerebrospinal fluid (CSF) of autopsy-confirmed patients with different distributions of pathological αSyn, co-pathologies, and clinical diagnoses.
methodsThe αSyn-SAA was used to test antemortem CSF samples from 119 subjects with a variety of clinical syndromes and standardized neuropathological examinations from Oregon Health and Science University (OHSU) and University of California San Diego (UCSD; 56 additional postmortem CSF samples available). The αSyn-SAA was also applied to frontal cortex and amygdala homogenates. Sensitivity and specificity were compared across distributions of αSyn pathology. Clinical data and co-pathologies were compared across αSyn-SAA positive and negative groups.
resultsFifty-three individuals without and 66 with αSyn-pathology (neocortical [n = 38], limbic [n = 7], and amygdala-predominant [n = 21]) were included. There was a sensitivity of 97.8% and specificity of 98.1% of the αSyn-SAA to identify patients with limbic/neocortical pathology from antemortem CSF. Sensitivity to detect amygdala-predominant pathology was only 14.3%. Postmortem CSF and brain tissue αSyn-SAA analyses also showed higher assay positivity in samples from limbic/neocortical cases.
interpretationCSF αSyn-SAA reliably identifies αSyn seeds in patients with diffuse αSyn pathology in the context of co-pathology and non-Lewy body disease (LBD) diagnoses. The analysis of brain homogenates suggests that pathological αSyn in the amygdala might differ from pathological αSyn in the frontal cortex. The αSyn-SAA might facilitate the differential diagnosis of dementias with mixed pathologies. ANN NEUROL 2022;92:650-662.
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