Abstract

Pachyonychia congenita (PC) is a rare inherited disorder of keratinization characterized by hypertrophic nail dystrophy, painful palmoplantar blisters, cysts, follicular hyperkeratosis and oral leukokeratosis. These pathological clinical features are resulting from mutations in keratin proteins including KRT6A, KRT6B, KRT6C, KRT16, and KRT17. We present a 6-year-old girl with hypertrophic nail dystrophy, follicular hyperkeratosis, circumscribed plantar keratoderma and oral leukokeratosis. The features were consistent with the diagnosis of PC. The patient has been registered in the International Pachyonychia Congenita Research Registry (IPCRR) and is waiting for a detailed genetic analysis. The IPCRR has contributed to publication of numerous papers which emphasized the importance of the mutation type affecting various clinical presentations of PC. Based on recent data, a new classification system has been developed for PC, and it is gradually replacing the earlier classifications. It is based almost exclusively on the mutated genes. In this report we have raised the hypothesis that distinctive clinical features may be highly suggestive of a specific keratin mutation.

Details

Title
Pachyonychia Congenita - Can a Specific Phenotype be a Clue to a Genetic Defect? - a Case Report and Literature Review
Author
Lalošević, Jovan 1 ; Gajić-Veljić, Mirjana 2 ; Stojković-Filipović, Jelena 2 ; Bosić, Martina 3 ; Nikolić, Miloš 2 

 Clinic of Dermatovenereology, Clinical Center of Serbia, Belgrade, Serbia 
 Clinic of Dermatovenereology, Clinical Center of Serbia, Belgrade, Serbia; University of Belgrade, School of Medicine, Belgrade, Serbia 
 University of Belgrade, School of Medicine, Belgrade, Serbia 
Pages
119-123
Publication year
2017
Publication date
2017
Publisher
De Gruyter Poland
ISSN
18210902
e-ISSN
24060631
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
3157751534
Copyright
© 2017. This work is published under http://creativecommons.org/licenses/by-nc-nd/4.0 (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.