Porokeratotic Eccrine Ostial and Dermal Duct Nevus, also known as porokeratotic eccrine nevus, is related to nevus, epidermal and porokeratosis. An important gene associated with Porokeratotic Eccrine Ostial and Dermal Duct Nevus is GJB2 (Gap Junction Protein Beta 2). Affiliated tissues include skin.