Ectodermal Dysplasia 9, Hair/nail Type, also known as ectd9, is related to ectodermal dysplasia and ectodermal dysplasia 4, hair/nail type. An important gene associated with Ectodermal Dysplasia 9, Hair/nail Type is HOXC13 (Homeobox C13), and among its related pathways/superpathways is Keratinization. Affiliated tissues include eye, and related phenotypes are nail dystrophy and absent hair