Mutations in the KCNA1 gene cause diverse neurological phenotypes, including episodic ataxia, partial epilepsy, and isolated myokymia, driven by impaired potassium channel function.
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Alerts clinicians to KCNA1 variants in mixed ataxia-epilepsy-myokymia syndromes; extends mutation spectrum but remains hypothesis-generating.
Eunson et al. (2000) studied this question.
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