ArticleMovement disorders : official journal of the Movement Disorder Society2025
Comparison of Two α-Synuclein Seed Amplification Assays for Discrimination of Parkinson Disease and Atypical Parkinsonism.
Article in Movement disorders : official journal of the Movement Disorder Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
5 citing papers in PubMed.
- Inter-assay and Inter-site Performance of Alpha-Synuclein Seed Amplification Assays in Synucleinopathies: A Multicenter 2 × 2 Protocol Comparison.Neurology and therapy · 2026Article
- Spatial multi-omics identifies early synaptic pruning and context-specific dopaminergic vulnerability in synucleinopathies.Nature communications · 2026Article
- A Systematic Comparison of Alpha-Synuclein Seed Amplification Assays for Increasing Reproducibility.Annals of clinical and translational neurology · 2026Review
- Clinical correlates of a negative cerebrospinal fluid α-synuclein seed amplification assay result in Parkinson's disease.NPJ Parkinson's disease · 2026Article
- Seed amplification of released alpha-synuclein strains reveals genotype-specific differences in Parkinson's disease neurons.Frontiers in aging neuroscience · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors.
Funding
Abstract
backgroundSeed amplification assays (SAAs) for misfolded α-synuclein (syn) have shown inconsistent results in multiple system atrophy (MSA).
objectiveThe objective of this study was to compare a novel syn SAA (synSAA) that distinguishes between Lewy body disease (LBD) and MSA syn-seeds (Amprion-SAA) with an LBD-specific synSAA (IRCCS Istituto delle Scienze Neurologiche di Bologna [ISNB]-SAA).
methodsWe applied both assays to cerebrospinal fluid samples from 114 patients with MSA, 49 patients with Parkinson disease (PD), 40 patients with progressive supranuclear palsy (PSP), and 46 controls.
resultsAmprion-SAA detected type 2 ("MSA-type") syn-seeds in 101 (88.6%) MSA, 3 (6.1%) PD, 4 (10.0%) PSP, and 6 (13.0%) control participants, and type 1 ("LBD-type") syn-seeds in 39 (79.6%) PD, 3 (2.6%) MSA, and 1 (2.5%) PSP participant. ISNB-SAA detected LBD-specific syn-seeds in 40 (81.6%) PD, 4 (3.5%) MSA, and none of the PSP or control participants.
conclusionsAmprion-SAA, performed at ISNB, uniquely discriminated MSA from both PD and PSP participants with good accuracy. However, it showed lower specificity than ISNB-SAA, primarily related to the type 2 profile. © 2025 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.