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Case Reports
.1998 May 26;77(4):298-301.
doi: 10.1002/(sici)1096-8628(19980526)77:4<298::aid-ajmg9>3.0.co;2-j.

De novo mutation in CACNA1A caused acetazolamide-responsive episodic ataxia

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Case Reports

De novo mutation in CACNA1A caused acetazolamide-responsive episodic ataxia

Q Yue et al. Am J Med Genet..

Abstract

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. Single-strand conformation polymorphism (SSCP) analysis of exon 23 identified an extra band in the patient that was not present in other relatives or in normal controls. Exon 23 of the patient showed a spontaneous C to T substitution at position 4410 resulting in an early stop codon. Patients with nonfamilial episodic ataxia may respond to acetazolamide and may have mutations in CACNA1A.

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