Ectodermal Dysplasia 4, Hair/nail Type, also known as pure hair and nail ectodermal dysplasia, is related to ectodermal dysplasia 7, hair/nail type and ectodermal dysplasia 9, hair/nail type. An important gene associated with Ectodermal Dysplasia 4, Hair/nail Type is KRT85 (Keratin 85), and among its related pathways/superpathways are Nervous system development and Keratinization. Affiliated tissues include skin, and related phenotypes are sparse body hair and intellectual disability