Palmoplantar Keratosis, also known as palmoplantar keratoderma, is related to keratoderma, palmoplantar, with deafness and palmoplantar keratoderma, nonepidermolytic, focal 1. An important gene associated with Palmoplantar Keratosis is CTSC (Cathepsin C), and among its related pathways/superpathways are Nervous system development and Cytoskeletal Signaling. The drugs Carbamide peroxide and Aspartic acid have been mentioned in the context of this disorder. Affiliated tissues include skin and heart, and related phenotypes are homeostasis/metabolism and growth/size/body region