Ectodermal Dysplasia-Syndactyly Syndrome 1, also known as edss1, is related to chromosome 2q35 duplication syndrome and ectodermal dysplasia. An important gene associated with Ectodermal Dysplasia-Syndactyly Syndrome 1 is NECTIN4 (Nectin Cell Adhesion Molecule 4). Affiliated tissues include skin, and related phenotypes are heat intolerance and alopecia