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EnglishIntroduction: Neurofascin, encoded by NFASC, is a transmembrane protein that plays an essential role in nervous system development and node of Ranvier function. Anti-Neurofascin autoantibodies cause a specific type of chronic inflammatory demyelinating polyneuropathy (CIDP) often characterized by cerebellar ataxia and tremor. Recently, homozygous NFASC mutations were recently associated with a neurodevelopmental disorder in two families. Methods: A combined approach of linkage analysis and whole-exome sequencing was performed to find the genetic cause of early-onset cerebellar ataxia and demyelinating neuropathy in two siblings from a consanguineous Italian family. Functional studies were conducted on neurons from induced pluripotent stem cells (iPSCs) generated from the patients. Results: Genetic analysis revealed a homozygous p.V1122E mutation in NFASC. This mutation, affecting a highly conserved hydrophobic transmembrane domain residue, led to significant loss of Neurofascin protein in the iPSC-derived neurons of affected siblings. Conclusions: The identification of NFASC mutations paves the way for genetic research in the developing field of nodopathies, an emerging pathological entity involving the nodes of Ranvier, which are associated for the first time with a hereditary ataxia syndrome with neuropathy.
Neurofascin (NFASC) gene mutation causes autosomal recessive ataxia with demyelinating neuropathy / E. Monfrini, L. Straniero, S. Bonato, G. Monzio Compagnoni, A. Bordoni, R. Dilena, P. Rinchetti, R. Silipigni, D. Ronchi, S. Corti, G.P. Comi, N. Bresolin, S. Duga, A. Di Fonzo. - In: PARKINSONISM & RELATED DISORDERS. - ISSN 1353-8020. - (2019 Mar 01). [Epub ahead of print]
| Titolo: | Neurofascin (NFASC) gene mutation causes autosomal recessive ataxia with demyelinating neuropathy | |
| Autori: | MONFRINI, EDOARDO (Primo) STRANIERO, LETIZIA (Secondo) DUGA, STEFANO (Penultimo) DI FONZO, ALESSIO BARNABA (Ultimo) (Corresponding) | |
| Parole Chiave: | Hereditary Ataxia; Neurofascin; Neuropathy; NFASC; Nodopathy; Neurology; Geriatrics and Gerontology; Neurology (clinical) | |
| Settore Scientifico Disciplinare: | Settore MED/26 - Neurologia | |
| Data di pubblicazione: | 1-mar-2019 | |
| Rivista: | ||
| Tipologia: | Article (author) | |
| Digital Object Identifier (DOI): | http://dx.doi.org/10.1016/j.parkreldis.2019.02.045 | |
| Appare nelle tipologie: | 01 - Articolo su periodico |
File in questo prodotto:
| File | Descrizione | Tipologia | Licenza | |
|---|---|---|---|---|
| Monfrini 2019 2.pdf | Post-print, accepted manuscript ecc. (versione accettata dall'editore) | Open Access Visualizza/Apri | ||
| 1-s2.0-S1353802019300914-main.pdf | Publisher's version/PDF | Administrator Richiedi una copia |
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