Padi3 (Peptidylarginine deiminase type III): Padi3 is essential for hair follicle formation, and mutations in the Padi3 gene are the cause of a rare hair disorder called uncombed hair syndrome, which is associated with centrifugal scarring alopecia of the scalp, a more frequent condition affecting mainly African women [26]. This evidence concerns the gene PADI3 and uncombable hair syndrome.