<unk>  (also called<unk> -Williams syndrome) is a congenital disorder associated with rapid growth beginning in the prenatal period, a characteristic facial appearance and certain skeletal features. It was first described by<unk>  in 1974.
It can be associated with NSD1.
Weaver syndrome
Clark-Baraitser syndrome
Parinaud's syndrome
Bristowe's syndrome
Cohen syndrome
West syndrome
Dorian Gray syndrome
Urban-Rogers-Meyer syndrome