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Updated: Jan 25, 2026
07:33
A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia
Published on: May 21, 2010
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Cognitive and Psychiatric Evaluation in SYNE1 Ataxia
Maria Thereza Drumond Gama1, Pedro Braga-Neto2,3, Livia Almeida Dutra1
1Department of Neurology, Ataxia Unit, Universidade Federal de São Paulo, Sao Paulo, Brazil.
Cerebellum (London, England)
|May 4, 2019
Summary
Mutations in the SYNE1 gene cause cerebellar ataxia with cognitive issues. Patients with SYNE1 ataxia show impaired attention and processing speed, with minimal psychiatric symptoms, suggesting cerebellum
Area of Science:
- Neurogenetics
- Neurology
- Cognitive Neuroscience
Background:
- Mutations in the Spectrin Repeat Containing Nuclear Envelope 1 (SYNE1) gene are linked to late-onset cerebellar ataxia.
- Previous observations noted non-cerebellar symptoms, including cognitive deficits, in SYNE1-related disorders.
Purpose of the Study:
- To provide a detailed cognitive and psychiatric profile of individuals with SYNE1 gene mutations.
- To investigate the impact of SYNE1 ataxia on higher cognitive functions.
Main Methods:
- Neuropsychological and psychiatric evaluations were conducted on six patients diagnosed with SYNE1 ataxia.
- Patient performance was compared against 18 age- and education-matched healthy controls.
Main Results:
- Patients with SYNE1 ataxia exhibited significant cognitive dysfunction, particularly in attention and processing speed.
- Psychiatric assessments revealed low overall behavioral symptoms, with only minor anxiety complaints noted.
Conclusions:
- SYNE1 ataxia patients demonstrate specific cognitive impairments, highlighting the cerebellum's role in higher cognitive functions.
- These findings suggest SYNE1 ataxia may serve as a model for studying cerebellar contributions to cognition.
- Further research may explore cerebellar pathway dysfunction in conditions like schizophrenia, potentially linking to abstract thinking deficits.
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