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Fine genetic mapping of diffuse non-epidermolytic palmoplantar keratoderma to chromosome 12q11-q13: exclusion of the mapped type II keratins.

Abstract
Diffuse non-epidermolytic palmoplantar keratoderma (NEPPK) belongs to the heterogeneous group of skin diseases characterized by thickening of the stratum corneum of the palms and soles (1). This autosomal dominant PPK is characterized by a diffuse pattern of palmar and plantar hyperkeratosis giving the affected areas a thickened yellowish appearance with a marked erythematous edge. Linkage of diffuse NEPPK to chromosome 12q11-q13 has been demonstrated in two independent reports (2, 3). In this study, we describe detailed haplotyping with microsatellite markers mapping to this chromosomal region in three diffuse NEPPK pedigrees from the south of England. Fine mapping of a previously identified recombination event and the identification of a common disease haplotype segregating in the three pedigrees places the diffuse NEPPK locus proximal to the type II keratin gene cluster.
AuthorsD P Kelsell, H P Stevens, P E Purkis, U Talas, M H Rustin, I M Leigh
JournalExperimental dermatology (Exp Dermatol) Vol. 8 Issue 5 Pg. 388-91 (Oct 1999) ISSN: 0906-6705 [Print] Denmark
PMID10536965 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Keratins
Topics
  • Chromosome Mapping
  • Chromosomes, Human, Pair 12 (genetics)
  • Female
  • Genetic Linkage
  • Haplotypes
  • Humans
  • Keratins (genetics)
  • Keratoderma, Palmoplantar, Diffuse (genetics, pathology)
  • Male
  • Microsatellite Repeats
  • Multigene Family
  • Pedigree

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