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Parkinsonism & related disorders

Aprataxin (APTX) gene mutations resembling multiple system atrophy.


PMID 17049295

Abstract

Mutations of the aprataxin (APTX) gene cause early-onset ataxia with ocular motor apraxia and hypoalbuminemia (EAOH), also called ataxia with oculomotor apraxia type 1. Recent studies showed clinical heterogeneity in patients with EAOH. We describe 2 patients whose clinical features resembled those of multiple system atrophy of the cerebellar subtype (MSA-C) but without ocular motor apraxia and hypoalbuminemia. Each had a different nucleotide transition in the APTX gene (725G-->A and 457A-->G). These variants on the APTX gene exhibit phenotypic variability.

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