Waardenburg SyndromeReceptor, Endothelin AReceptors, EndothelinSOXE Transcription FactorsReceptor, Endothelin BMicrophthalmia-Associated Transcription FactorPigmentation DisordersEndothelinsHypopigmentationEndothelin-3Paired Box Transcription FactorsEndothelin-1Hirschsprung DiseaseAnophthalmosDeafnessAnisocoriaLaryngomalaciaIris DiseasesHigh Mobility Group ProteinsChromosomes, Human, Pair 2Neural CrestAbnormalities, MultiplePedigreeMelanocytesEndothelin-2Genes, DominantPeptides, CyclicMutationTranscription FactorsViper VenomsDNA-Binding ProteinsPhenotypePhenylpropionatesDNA Mutational Analysis