Estimation of the mutation frequencies in Charcot-Marie-Tooth disease type 1 and hereditary neuropathy with liability to pressure palsies: a European collaborative study

Eur J Hum Genet. 1996;4(1):25-33. doi: 10.1159/000472166.


A European collaboration on Charcot-Marie-Tooth type 1 (CMT1) disease and hereditary neuropathy with liability to pressure palsies (HNPP) was established to estimate the duplication and deletion frequency, respectively, on chromosome 17p11.2 and to make an inventory of mutations in the myelin genes, peripheral myelin protein 22 (PMP22), myelin protein zero (MPZ) and connexin 32 (Cx32) located on chromosomes 17p11.2, 1q21-q23 and Xq13.1, respectively. In 70.7% of 819 unrelated CMT1 patients, the 17p11.2 duplication was present. In 84.0% of 156 unrelated HNPP patients, the 17p11.2 deletion was present. In the nonduplicated CMT1 patients, several different mutations were identified in the myelin genes PMP22, MPZ and Cx32.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Charcot-Marie-Tooth Disease / epidemiology
  • Charcot-Marie-Tooth Disease / genetics*
  • Chromosomes, Human, Pair 17
  • Connexins / genetics*
  • Europe
  • Gene Deletion
  • Gene Frequency*
  • Genetic Testing
  • Hereditary Sensory and Motor Neuropathy / epidemiology
  • Hereditary Sensory and Motor Neuropathy / genetics*
  • Humans
  • Multigene Family
  • Mutation*
  • Myelin P0 Protein / genetics
  • Myelin Proteins / genetics*
  • X Chromosome


  • Connexins
  • Myelin P0 Protein
  • Myelin Proteins
  • PMP22 protein, human
  • connexin 32