title: Pachyonychia congenita type 2, N92S mutation of keratin 17 gene: clinical features, mutation analysis and pathological view.
abstract: Pachyonychia congenita (PC) type 2 is a rare inherited genetic disease characterized by hypertrophic nail dystrophy, palmoplantar hyperkeratosis and multiple pilosebaceous cysts. In some cases, natal teeth and hair abnormalities may be present. It is caused by mutations in keratin 17 or its expression partner keratin 6b. Here, an N92S (p.Asn92Ser) germline keratin 17 gene mutation in a pachyonychia congenita type 2 female patient is presented. The pedigree includes the 15 members of a family who showed a severe expression of the phenotype for six generations with a similar clinical picture consisting of sebaceous cysts, nail dystrophy, hyperkeratosis, hair abnormalities, natal teeth, hoarseness and hyperhydrosis. In conclusion, we emphasize the importance of diagnosing and managing pachyonychia congenita in childhood for the assistance of affected children and for the development of potential therapies.
authors.affiliation: Department of Pediatrics, Ege University, Faculty of Medicine, 35100 Bornova, Izmir, Turkey. ozgur.cogulu@ege.edu.tr
authors.forename: Ozgur
authors.initials: O
authors.lastname: Cogulu
authors.forename: Huseyin
authors.initials: H
authors.lastname: Onay
authors.forename: Ayca
authors.initials: A
authors.lastname: Aykut
authors.forename: Neil J
authors.initials: NJ
authors.lastname: Wilson
authors.forename: Frances J D
authors.initials: FJ
authors.lastname: Smith
authors.forename: Tugrul
authors.initials: T
authors.lastname: Dereli
authors.forename: Ferda
authors.initials: F
authors.lastname: Ozkinay
mesh_terms: D002675:Child, Preschool; D004252:DNA Mutational Analysis; D005260:Female; D005838:Genotype; D006801:Humans; D053537:Keratin-17 / Q000235:genetics*; D009154:Mutation; D053549:Pachyonychia Congenita / Q000235:genetics* / Q000473:pathology; D010375:Pedigree; D010641:Phenotype
chemical_list: D053537:Keratin-17