11. With Dr . Jadassohn, he described an ectodermal dysplasia now known as " Jadassohn-Lewandowsky syndrome ". 12. It is considered a kind of ectodermal dysplasia . 13. It is a type A ectodermal dysplasia . 14. A major focus is basic investigation of ectodermal appendage development and the study of human ectodermal dysplasias . 15. Mutations in the IKBKG gene results in incontinentia pigmenti, hypohidrotic ectodermal dysplasia , and several other types of immunodeficiencies. 16. Hypodontia is often familial, and can also be associated with genetic disorders such as ectodermal dysplasia or Down syndrome. 17. Defects in this gene are a cause of ectodermal dysplasia , anhidrotic, which is also known as X-linked hypohidrotic ectodermal dysplasia. 18. EDA-A1 and EDA-A2 are two isoforms of ectodysplasin that are encoded by the anhidrotic ectodermal dysplasia ( EDA ) gene. 19. Anthony suffers from ectodermal dysplasia , a condition in which his skin, teeth, hair and sweat glands do not develop properly. 20. Defects in this gene are a cause of ectodermal dysplasia, anhidrotic, which is also known as X-linked hypohidrotic ectodermal dysplasia .