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Updated: Jun 22, 2026

Cerebellar Regional Dissection for Molecular Analysis

Cerebellar Regional Dissection for Molecular Analysis

Published on: December 5, 2020

Spinocerebellar ataxia 8: variable phenotype and unique pathogenesis.

Amitabh Gupta¹, Joseph Jankovic

¹Department of Neurology, University of Toronto, Toronto, ON, Canada M5T 2S8.

Parkinsonism & Related Disorders

|June 30, 2009

Summary

Spinocerebellar ataxia 8 (SCA8), a rare genetic disorder, presents a wide range of symptoms, complicating diagnosis. Myoclonus and migraines in patients with cerebellar ataxia suggest SCA8, highlighting potential links to channelopathies.

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Cerebellar Regional Dissection for Molecular Analysis

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A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia

A Simple Composite Phenotype Scoring System for Evaluating Mouse Models of Cerebellar Ataxia

Published on: May 21, 2010

Area of Science:

Neurogenetics
Neurology
Molecular Medicine

Background:

Spinocerebellar ataxia 8 (SCA8) is a triplet repeat expansion disorder.
Its genetic distinctness contrasts with a highly variable phenotype, challenging clinical diagnosis.
Other inherited ataxias share some features, further complicating identification.

Observation:

This review details three new genetically confirmed SCA8 cases.
The cases illustrate the broad clinical spectrum of SCA8 symptoms.
Myoclonus and migraine headaches were noted in conjunction with cerebellar ataxia.

Findings:

The variable phenotype of SCA8 necessitates considering it in cerebellar ataxia cases presenting with myoclonus and migraines.
Controversies exist regarding optimal genetic testing strategies for SCA8.
Emerging evidence suggests SCA8 may impact calcium channel function.

Implications:

The findings suggest a potential clinical and pathogenic overlap between SCA8 and channelopathies, particularly episodic ataxias and migraines.
Recognizing these specific symptoms can aid in earlier and more accurate SCA8 diagnosis.
Further research into SCA8's effect on calcium channels may reveal new therapeutic targets.