A novel mutation of keratin 9 in epidermolytic palmoplantar keratoderma combined with knuckle pads

  • Yong Lu
  • , Chenhong Guo
  • , Qiji Liu
  • , Xiyu Zhang
  • , Lin Cheng
  • , Jiangxia Li
  • , Bingxi Chen
  • , Guimin Gao
  • , Haibin Zhou
  • , Yishou Guo
  • , Yefu Li
  • , Yaoqin Gong

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

Epidermolytic palmoplantar keratoderma (EPPK) is an autosomal dominantly inherited disease. We studied a family from Shandong, China, having patients suffering from EPPK with a unique symptom - knuckle pads. We noticed that both the hyperkeratosis and knuckle pads in the Chinese family were friction-related. Candidate gene analysis was carried out using linkage analysis and direct sequencing. A novel L160F mutation in keratin 9 was found, and its effects on the secondary structure of keratin 9 were studied. We predict that the L160F mutation is also responsible for the knuckle pads in the family. Our study provides a new clue for the study of the function of keratin 9.

Original languageEnglish
Pages (from-to)345-349
Number of pages5
JournalAmerican Journal of Medical Genetics
Volume120 A
Issue number3
DOIs
StatePublished - 30 Jul 2003
Externally publishedYes

Keywords

  • Epidermolytic palmoplantar keratoderma
  • KRT9
  • Keratin 9
  • Knuckle pads
  • Mutation

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