Description | Protein which, if defective, causes Waardenburg syndrome, an autosomal dominant disorder, characterized by sensorineural deafness associated with pigmentary changes of the irides, hair and skin; each of these features may be uni- or bilateral. On the basis of the presence or absence of dystopia canthorum (lateral displacement of the inner corner of the eye), Waardenburg syndrome type 1 (WS1) and type 2 (WS2) are distinguished. Additionally, the association of WS1 with limb anomalies defines Waardenburg syndrome type 3 (WS3), while the association of Waardenburg features with Hirschsprung disease defines Waardenburg syndrome type 4 (WS4) |