Monarch Disease Ontology id MONDO_0013201 (Waardenburg syndrome type 4B) is a subtype of Waardenburg syndrome type 4 (Waardenburg-Shah syndrome) caused by mutations in EDN3. Also known as: EDN3 Waardenburg syndrome, WS4B, Waardenburg syndrome caused by mutation in EDN3, Waardenburg syndrome type IVB, Waardenburg syndrome with Hirschsprung disease type 4B.