Palmoplantar keratoderma and congenital alopecia 1 - CISMeF
Palmoplantar keratoderma and congenital alopecia 1OMIM Phenotype
Preferred Label : Palmoplantar keratoderma and congenital alopecia 1;
Symbol : PPKCA1;
CISMeF acronym : PPKCA1;
Type : Phenotype, molecular basis known;
Alternative titles and symbols : Keratoderma-hypotrichosis-leukonychia totalis syndrome; Ppkca, stevanovic type;
Description : In a review of ectodermal dysplasia syndromes characterized by palmoplantar keratoderma
(PPK) and congenital alopecia, Castori et al. (2010) suggested that there are 2 main
types of unclassified syndromes that combine these 2 features. A more severe recessive
disorder (212360) shows progressive hyperkeratosis resulting in sclerosis, severe
contractures and tapering of the digits, and pseudoainhum formation. The less severe
autosomal dominant disorder, described here, does not have significant hand complications,
although keratosis is present.;
Inheritance : Autosomal dominant;
Molecular basis : Caused by mutation in the alpha-1 gap junction protein gene (GJA1, 121014.0023);