Late-onset hereditary axonal neuropathies.

Journal Article

BACKGROUND: Hereditary motor-sensory neuropathy or the Charcot-Marie-Tooth syndrome is known to represent considerable genetic heterogeneity. Onset is usually in childhood, adolescence, or young adulthood. The objective of this study was to define late-onset forms of the disorder. METHODS: A clinical and genetic study of families with uniformly late onset of peripheral neuropathy was performed in a university neurogenetics setting. RESULTS: Six families were identified with consistently late onset of a primarily axonal neuropathy. Median age at symptom onset was 57 years (range 35-85 years) of a mixed motor and sensory neuropathy with electrophysiologic characteristics of an axonal rather than demyelinating condition. There was a possible association with deafness. Two families showed autosomal dominant inheritance whereas four families had only one affected generation with an excess of males. An extensive mutation screen of nine genes known to cause Charcot-Marie-Tooth was negative. CONCLUSIONS: There are late-onset forms of hereditary axonal neuropathies. The genetic causes remain unknown and genetic heterogeneity within this entity is likely.

Full Text

Duke Authors

Cited Authors

  • Bennett, CL; Lawson, VH; Brickell, KL; Isaacs, K; Seltzer, W; Lipe, HP; Weiss, MD; Carter, GT; Flanigan, KM; Chance, PF; Bird, TD

Published Date

  • July 2008

Published In

Volume / Issue

  • 71 / 1

Start / End Page

  • 14 - 20

PubMed ID

  • 18495953

Electronic International Standard Serial Number (EISSN)

  • 1526-632X

International Standard Serial Number (ISSN)

  • 0028-3878

Digital Object Identifier (DOI)

  • 10.1212/01.wnl.0000304048.94023.73

Language

  • eng