HMSN III phenotype due to homozygous expression of a dominant HMSN II gene

Sghirlanzoni, A.; Pareyson, D.; Balestrini, M.R.; Bellone, E.; Berta, E.; Ciano, C.; Mandich, P.; Marazzi, R.

Neurology 42(11): 2201-2204

1992


ISSN/ISBN: 0028-3878
PMID: 1436537
Document Number: 397531
We describe two siblings with hereditary motor and sensory neuropathy (HMSN) type III. Their parents were both affected with autosomal dominant axonal HMSN. The neuropathy in the siblings probably resulted from homozygous expression of the HMSN II gene. Together with other reports of homozygous HMSN I, this family suggests that HMSN III is heterogeneous and encompasses the most severe homozygous expression of neuropathic genes.

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