title: Identification of the genetic locus for keratosis palmaris et plantaris on chromosome 17 near the RARA and keratin type I genes.
abstract: Familial keratosis palmaris et plantaris (KPPF) is characterized by extreme keratinization and desquamation of the skin of the palmar and plantar surfaces of the hands and feet. We have mapped the causative genetic defect to an 8 cM interval on 17q12-24 in or close to the acidic keratin (type I) gene cluster. We show that KPPF co-segregates with a rare, high molecular weight allele of an insertion-deletion polymorphism in the C-terminal coding region of the keratin 10 gene (Z = 8.36 at theta = 0.00) and segrates as a true autosomal dominant trait. Some pedigrees with familial hyperkeratosis of the palms and soles have co-inherited diseases such as congenital malformations and familial cancers. Our analysis provide a region which should be investigated for contiguous gene syndromes in such pedigrees.
authors.affiliation: Department of Medicine, University of Toronto, Ontario, Canada.
authors.forename: E I
authors.initials: EI
authors.lastname: Rogaev
authors.forename: E A
authors.initials: EA
authors.lastname: Rogaeva
authors.forename: E K
authors.initials: EK
authors.lastname: Ginter
authors.forename: G I
authors.initials: GI
authors.lastname: Korovaitseva
authors.forename: L A
authors.initials: LA
authors.lastname: Farrer
authors.forename: A B
authors.initials: AB
authors.lastname: Shlensky
authors.forename: A N
authors.initials: AN
authors.lastname: Pritkov
authors.forename: V N
authors.initials: VN
authors.lastname: Mordovtsev
authors.forename: P H
authors.initials: PH
authors.lastname: St George-Hyslop
mesh_terms: D001483:Base Sequence; D002874:Chromosome Mapping; D002886:Chromosomes, Human, Pair 17; D004247:DNA; D004252:DNA Mutational Analysis; D005260:Female; D005838:Genotype; D006720:Homozygote; D006801:Humans; D007633:Keratins / Q000235:genetics*; D007645:Keratoderma, Palmoplantar / Q000235:genetics*; D008297:Male; D008969:Molecular Sequence Data; D010375:Pedigree; D010641:Phenotype; D018168:Receptors, Retinoic Acid / Q000235:genetics*; D000072482:Retinoic Acid Receptor alpha
chemical_list: C000607071:RARA protein, human; D018168:Receptors, Retinoic Acid; D000072482:Retinoic Acid Receptor alpha; D007633:Keratins; D004247:DNA