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Neurosci Lett. 2003 Oct 30;350(3):169-72.

A case of adult-onset Alexander disease with Arg416Trp human glial fibrillary acidic protein gene mutation.

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First Department of Internal Medicine, Kurume University School of Medicine, Kurume 830-0011, Japan.


Heterozygous point mutations in the coding region of the human glial fibrillary acidic protein (GFAP) gene have been reported in patients with various forms of Alexander disease (AD). We report a case of genetically confirmed adult-onset AD with palatal myoclonus, pyramidal tract signs, cerebellar signs, and marked atrophy of the medulla oblongata and spinal cord, autonomic dysfunction and heterozygous R416W GFAP mutation. Interestingly, this R416W mutation has also been reported in both infantile and juvenile forms of Alexander disease. The fact that a R416W mutation causes various types of AD suggests that clinical severities of AD are due not only to the different sites and nature of mutations in GFAP, but also to other modifying factor(s).

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