We describe a unique family in which several individual are affected with episodes of ataxia that best fit the phenotype of episodic ataxia type 2 (EA2). All of the affected family members had episodes typically lasting for several hours, and none of them had muscle abnormalities including myokymia.
Novel mutation in KCNA1 causes episodic ataxia with paroxysmal dyspnea
β Scribed by Steven J. Shook; Hafsa Mamsa; Joanna C. Jen; Robert W. Baloh; Lan Zhou
- Publisher
- John Wiley and Sons
- Year
- 2008
- Tongue
- English
- Weight
- 278 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0148-639X
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## Abstract Episodic ataxia type 2 (EA2) is a dominantly inherited disorder, characterized by spells of ataxia, dysarthria, vertigo, and migraines, associated with mutations in the neuronal calciumβchannel gene __CACNA1A__. Ataxic spells lasting minutes to hours are provoked by stress, exercise, or
With the recent report of mutations in the calcium channel gene CACNA1A in two families with episodic ataxia type 2, we investigated a patient with nonfamilial episodic vertigo and ataxia responsive to acetazolamide for similar mutations. Singlestrand conformation polymorphism (SSCP) analysis of exo