2015, Number 2
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Gac Med Mex 2015; 151 (2)
Clinical and molecular findings of pachyonychia congenita type 2 (PC-2)
Cammarata-Scalisi F, Natsuga K, Toyonaga E, Nishie W, Shimizu H, Stock F, Milano M, Petrosino P, Arenas SA, Medina Y
Language: Spanish
References: 10
Page: 270-272
PDF size: 123.91 Kb.
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-old 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.
REFERENCES
Qiang W, Kaibo W, Tienan L, et al. A novel mutation of keratin 17 gene in a pedigree with pachyonychia congenita type 2. Int J Dermatol. 2013;52(1):117-9.
Duarte GV, Cunha R. Do you know this syndrome? Pachyonychia congenita. An Bras Dermatol. 2011;86(6):1222-7.
Kamra HT, Gadgil PA, Ovhal AG, Narkhede RR. Steatoscystoma multiplex- a rare genetic disorder: a case report and review of the literature. J Clin Diagn Res. 2013;7(1):166-8.
Zang D, Zhou C, He M, Ma X, Zhang J. A novel mutation (p.Arg94Gly) of keratin 17 in a Chinese family with steatocystoma multiplex. Eur J Dermatol. 2011;21(1):142-4.
Roche-Gamón E, Mahiques-Santos L, Vilata-Correll JJ. Paquioniquia congénita. Piel. 2006;21:72-8.
Pinto J. Paquioniquia congénita. Reporte de un caso. Dermatol Venez. 1967;8:186-90.
Eliason MJ, Leachman SA, Feng BJ, Schwarzt ME, Hansen CD. A review of the clinical phenotype of 254 patients with genetically confirmed pachyonychia congenita. J Am Acad Dermatol. 2012;67(4):680-6.
Covello SP, Smith FJ, Sillevis Smitt JH, et al. Keratin 17 mutations cause either steatocystoma multiplex or pachyonychia congenita type 2. Br J Dermatol. 1998;139(3):475-80.
Wang X, Shi Y, Ye Y, et al. [Keratin 17 gene mutation in patients with steatocystoma multiplex]. Zhonghua Yi Xue Za Zhi. 2001;81(9):540-3.
Wilson NJ, Pérez ML, Vahlquist A, et al. Homozygous dominant missense mutation in keratin 17 leads to alopecia in addition to severe pachyonychia congenita. J Invest Dematol. 2012;132(7):1921-4.