ArticleActa neuropathologica communications2022
Performance of αSynuclein RT-QuIC in relation to neuropathological staging of Lewy body disease.
Article in Acta neuropathologica communications, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers, 2 of them syntheses that pooled it.
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Who cites it
89 citing papers in PubMed, 2 syntheses or guidelines pooled it, 117 citations in OpenAlex.
- Cerebrospinal fluid biomarkers for diagnosis of Parkinson's disease: a systematic review and network meta-analysis.Journal of neurology · 2025Pooled it
- The Alzheimer's Association clinical practice guideline for the Diagnostic Evaluation, Testing, Counseling, and Disclosure of Suspected Alzheimer's Disease and Related Disorders (DETeCD-ADRD): Executive summary of recommendations for specialty care.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025Guideline
- From a prion seed to a tree of discoveries: Byron Caughey's RT-QuIC legacy in protein misfolding research.Acta neuropathologica · 2026Review
- Pre-dementia clinical trajectories associated with neuronal α-synuclein neuropathologic change: a retrospective cohort study.Research square · 2026Article
- Neuropsychological Profile and Cognitive Trajectories of Patients With Biomarker Evidence of Alzheimer Disease or Dementia With Lewy bodies.Neurology · 2026Article
- 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
- 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
- Brain-Only Versus GI-Only Synucleinopathy: A Comprehensive Autopsy Study With Both IHC and SAA.medRxiv : the preprint server for health sciences · 2026Article
- Prevalence and clinical effects of Lewy Body pathology in non-prion rapidly progressive dementias: a retrospective cohort study.Alzheimer's research & therapy · 2026Article
- Ten-Year Retrospective Study on the Diagnostic Value of Three-Site Skin Biopsy for Detecting pS129-α-Synuclein Biomarker: Cervical and Leg Dual-Site Biopsy as an Effective and Less Invasive Alternative.European journal of neurology · 2026Article
- Diagnostic Performance of the α-Synuclein Seed Amplification Assay for Dementia With Lewy Bodies: A Comparison Across 4 Laboratories.Neurology · 2026Article
- Prodromal Lewy Body Symptoms and α-Synuclein Seeding in Idiopathic Olfactory Dysfunction.Movement disorders clinical practice · 2026Article
- Characteristics and mechanisms of cognitive impairment in Parkinson disease.Nature reviews. Neurology · 2026Review
- Alpha-synuclein seeding activity in postmortem tissues from patients with diffuse and isolated Lewy bodies.Acta neuropathologica communications · 2026Article
- Carriers of LRRK2 pathogenic variants show a milder, anatomically distinct brain signature of Parkinson's disease.Communications medicine · 2026Article
- Microfluidic nanomagnetically isolated neuron- and astrocyte-derived extracellular vesicles to differentiate Lewy body and Alzheimer's disease.Npj biosensing · 2026Article
29 more citing papers are in PubMed but not listed here.
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Authors and funding
10 authors at 4 institutions in 2 countries.
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Abstract
Currently, there is a need for diagnostic markers in Lewy body disorders (LBD). α-synuclein (αSyn) RT-QuIC has emerged as a promising assay to detect misfolded αSyn in clinically or neuropathologically established patients with various synucleinopathies. In this study, αSyn RT-QuIC was used to analyze lumbar CSF in a clinical cohort from the Swedish BioFINDER study and postmortem ventricular CSF in a neuropathological cohort from the Arizona Study of Aging and Neurodegenerative Disorders/Brain and Body Donation Program (AZSAND/BBDP). The BioFINDER cohort included 64 PD/PDD, 15 MSA, 15 PSP, 47 controls and two controls who later converted to PD/DLB. The neuropathological cohort included 101 cases with different brain disorders, including LBD and controls. In the BioFINDER cohort αSyn RT-QuIC identified LBD (i.e. PD, PDD and converters) vs. controls with a sensitivity of 95% and a specificity of 83%. The two controls that converted to LBD were αSyn RT-QuIC positive. Within the AZSAND/BBDP cohort, αSyn RT-QuIC identified neuropathologically verified "standard LBD" (i.e. PD, PD with AD and DLB; n = 25) vs. no LB pathology (n = 53) with high sensitivity (100%) and specificity (94%). Only 57% were αSyn RT-QuIC positive in the subgroup with "non-standard" LBD (i.e., AD with Lewy Bodies not meeting criteria for DLB or PD, and incidental LBD, n = 23). Furthermore, αSyn RT-QuIC reliably identified cases with LB pathology in the cortex (97% sensitivity) vs. cases with no LBs or LBs present only in the olfactory bulb (93% specificity). However, the sensitivity was low, only 50%, for cases with LB pathology restricted to the brainstem or amygdala, not affecting the allocortex or neocortex. In conclusion, αSyn RT-QuIC of CSF samples is highly sensitive and specific for identifying cases with clinicopathologically-defined Lewy body disorders and shows a lower sensitivity for non-standard LBD or asymptomatic LBD or in cases with modest LB pathology not affecting the cortex.
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