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De novo mutation in CACNA1A caused acetazolamide-responsive episodic ataxia

✍ Scribed by Yue, Qing; Jen, Joanna C.; Thwe, May Myo; Nelson, Stanley F.; Baloh, Robert W.

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 13 KB
Volume: 77
Category: Article
ISSN: 0148-7299
DOI: 10.1002/(sici)1096-8628(19980526)77:4<298::aid-ajmg9>3.0.co;2-j

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✦ Synopsis

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 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 acetazola m i d e a n d m a y h a v e m u t a t i o n s i n

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