Stage-Dependent Biomarker Changes in Spinocerebellar Ataxia Type 3
- PMID: 37962377
- DOI: 10.1002/ana.26824
Stage-Dependent Biomarker Changes in Spinocerebellar Ataxia Type 3
Abstract
Spinocerebellar ataxia type 3/Machado-Joseph disease is the most common autosomal dominant ataxia. In view of the development of targeted therapies, knowledge of early biomarker changes is needed. We analyzed cross-sectional data of 292 spinocerebellar ataxia type 3/Machado-Joseph disease mutation carriers. Blood concentrations of mutant ATXN3 were high before and after ataxia onset, whereas neurofilament light deviated from normal 13.3 years before onset. Pons and cerebellar white matter volumes decreased and deviated from normal 2.2 years and 0.6 years before ataxia onset. We propose a staging model of spinocerebellar ataxia type 3/Machado-Joseph disease that includes a biomarker stage characterized by objective indicators of neurodegeneration before ataxia onset. ANN NEUROL 2024;95:400-406.
© 2023 The Authors. Annals of Neurology published by Wiley Periodicals LLC on behalf of American Neurological Association.
Update of
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Stage-dependent biomarker changes in spinocerebellar ataxia type 3.medRxiv [Preprint]. 2023 Apr 25:2023.04.21.23287817. doi: 10.1101/2023.04.21.23287817. medRxiv. 2023. Update in: Ann Neurol. 2024 Feb;95(2):400-406. doi: 10.1002/ana.26824. PMID: 37163081 Free PMC article. Updated. Preprint.
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