α‐Synuclein RT‐QuIC assay in cerebrospinal fluid of patients with dementia with Lewy bodies

α‐Synuclein RT‐QuIC assay in cerebrospinal fluid of patients with dementia with Lewy bodies

Abstract We applied RT‐QuIC assay to detect α‐synuclein aggregates in cerebrospinal fluid (CSF) of patients with suspected Creutzfeldt–Jakob disease who had a neuropathological diagnosis of dementia with Lewy bodies (DLB) (n = 7), other neurodegenerative diseases with α‐synuclein mixed pathology (n ...

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Main Authors: Matilde Bongianni, Anna Ladogana, Stefano Capaldi, Sigrid Klotz, Simone Baiardi, Annachiara Cagnin, Daniela Perra, Michele Fiorini, Anna Poleggi, Giuseppe Legname, Tatiana Cattaruzza, Francesco Janes, Massimo Tabaton, Bernardino Ghetti, Salvatore Monaco, Gabor G. Kovacs, Piero Parchi, Maurizio Pocchiari, Gianluigi Zanusso
Format: Article
Language:English
Published: Wiley 2019-10-01
Series:Annals of Clinical and Translational Neurology
Online Access:https://doi.org/10.1002/acn3.50897
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Summary:Abstract We applied RT‐QuIC assay to detect α‐synuclein aggregates in cerebrospinal fluid (CSF) of patients with suspected Creutzfeldt–Jakob disease who had a neuropathological diagnosis of dementia with Lewy bodies (DLB) (n = 7), other neurodegenerative diseases with α‐synuclein mixed pathology (n = 20), or without Lewy‐related pathology (n = 49). The test had a sensitivity of 92.9% and specificity of 95.9% in distinguishing α‐synucleinopathies from non‐α‐synucleinopathies. When performed in the CSF of patients with DLB (n = 36), RT‐QuIC was positive in 17/20 with probable DLB, 0/6 with possible DLB, and 0/10 with Alzheimer disease. These results indicate that RT‐QuIC for α‐synuclein is an accurate test for DLB diagnosis.
ISSN:2328-9503

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