Palmoplantar Keratoderma, Nonepidermolytic, Focal 2, also known as fneppk2, is related to palmoplantar keratoderma, nonepidermolytic, focal 1. An important gene associated with Palmoplantar Keratoderma, Nonepidermolytic, Focal 2 is TRPV3 (Transient Receptor Potential Cation Channel Subfamily V Member 3). Affiliated tissues include skin, and related phenotype is patchy palmoplantar hyperkeratosis.