Abstract
Familial paroxysmal dystonic choreoathetosis (PDC) is an autosomal dominant neurological disorder characterized by episodes of involuntary movement precipitated by caffeine, alcohol, or emotional stress. The locus for PDC has recently been mapped to chromosome 2q32-36, but its causative gene has not yet been identified. PDC is most likely a kind of channelopathy, as suggested by the fact that other paroxysmal neurological disorders are caused by various ion channel mutations. Although no ion channel is located in this candidate region, anion exchanger 3 (AE3) has been mapped to 2q36 and has also been reported to be the most promising candidate gene of PDC. In this study we performed sequencing of the coding region of the AE3 gene in patients with familial PDC linked to chromosome 2q and excluded the AE3 gene as the causative gene for PDC. Am. J. Med. Genet. (Neuropsychiatr. Genet.) 88:733-737, 1999.
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