[Clinical and molecular findings of pachyonychia congenita type 2 (PC-2)]
Francisco Cammarata-Scalisi1, Ken Natsuga2, Ellen Toyonaga2
1Unidad de Genética Médica, Departamento de Puericultura y Pediatría, Universidad de Los Andes, Mérida, Venezuela.
Abstract:
Pachyonychia congenita is a group of autosomal dominant inheritance pattern disorders characterized by hypertrophic nail dystrophy There are two main clinical subtypes: type 1 and 2. Pachyonychia congenita type 2 is readily differentiated from type 1 by multiple steatocysts and/or presence of natal teeth and can be confirmed by mutations of KRT6B and KRT17. We report the case of a 33-year-o/d female patient with the missense mutation in KRT17 gene (c.280C> T, p.Arg94Cys) and discuss the several clinical features found with this mutation in the literature.
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