Palmoplantar Keratoderma and Congenital Alopecia 1, also known as autosomal dominant palmoplantar keratoderma and congenital alopecia, is related to palmoplantar keratoderma and congenital alopecia 2 and nail disorder, nonsyndromic congenital, 3. An important gene associated with Palmoplantar Keratoderma and Congenital Alopecia 1 is GJA1 (Gap Junction Protein Alpha 1), and among its related pathways/superpathways are Vesicle-mediated transport and Gap junction trafficking. Affiliated tissues include skin, and related phenotypes are abnormality of the nail and palmoplantar keratoderma