Palmoplantar Keratoderma, Nonepidermolytic, Focal 1, also known as isolated focal non-epidermolytic palmoplantar keratoderma, is related to palmoplantar keratoderma, nonepidermolytic, focal or diffuse and palmoplantar keratosis. An important gene associated with Palmoplantar Keratoderma, Nonepidermolytic, Focal 1 is KRT16 (Keratin 16), and among its related pathways/superpathways are Nervous system development and COPI-independent Golgi-to-ER retrograde traffic. Affiliated tissues include skin, and related phenotypes are palmoplantar keratoderma and follicular hyperkeratosis