| A subtype of Waardenburg syndrome (WS) with characteristics of congenital deafness, minor defects in structures arising from neural crest resulting in pigmentation anomalies of eyes, hair, and skin, in combination with dystopia canthorum. Caused by a heterozygous mutation in the paired box-containing PAX3 gene on chromosome 2q36.1. In the majority of cases, WS1 is transmitted as an autosomal dominant disorder with a large variable inter and intrafamilial expressivity. Some affected patients present with a de novo mutation. |
