Recurrent E413K mutation of hHb6 in a Japanese family with monilethrix

Dermatology. 2003;206(4):338-40. doi: 10.1159/000069948.


Monilethrix is an autosomal dominant hair disorder characterized by a beaded appearance of the hair due to periodic thinning of the shaft. This disorder has been reported to be caused by mutations in the helix termination motif of two type II cortex keratins, hHb1 and hHb6. Here we describe a Japanese monilethrix family that has the most frequent mutation, the E413K mutation in hHb6, so far found in 26 families. Genotype/phenotype correlation was not obvious in our case or in the previously reported cases.

Publication types

  • Case Reports

MeSH terms

  • Child, Preschool
  • Codon*
  • Female
  • Hair / pathology
  • Humans
  • Hypotrichosis / genetics*
  • Hypotrichosis / pathology
  • Japan
  • Keratins / genetics*
  • Pedigree
  • Point Mutation / genetics*
  • Polymerase Chain Reaction


  • Codon
  • Keratins