The dominantly inherited motor and sensory neuropathies: Clinical and molecular advances

Garth A. Nicholson*

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

27 Citations (Scopus)

Abstract

The rapid advances in the molecular genetics and cell biology of hereditary neuropathy have revealed great genetic complexity. It is a challenge for physicians and laboratories to keep pace with new discoveries. Classification of hereditary neuropathies has evolved from a simple clinical to a detailed molecular classification. However, the molecular classification is not simple to use, as different mutations of the same gene produce a range of phenotypes. The logistics of testing for multiple gene mutations are considerable. This review gives a clinical overview of molecular and clinical advances in the dominant hereditary motor and sensory neuropathies [HM-SNs, Charcot-Marie-Tooth (CMT) neuropathy], which account for some 60%-70% of families with CMT. The dominant forms of CMT have cellular mechanisms different from those of recessive forms and are a separate diagnostic challenge, so they are not included in this review. Diagnostic testing requires accurate clinical information and a selective approach to gene screening until the cost of multiple gene mutation screening falls. Accurate molecular diagnosis is critical to genetic counseling. This review concentrates on how molecular information can be used clinically, on how physicians can keep pace with new developments, and on the relevance of this new knowledge to patients.

Original languageEnglish
Pages (from-to)589-597
Number of pages9
JournalMuscle and Nerve
Volume33
Issue number5
DOIs
Publication statusPublished - May 2006
Externally publishedYes

Keywords

  • Charcot-Marie-Tooth
  • Classification
  • CMT gene mutations
  • Dominant hereditary neuropathy
  • Myelin protein zero
  • Peripheral myelin protein 22
  • Review

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