HMX1 and Oculoauricular syndrome, Schorderet type: Mutations in HMX1 (human NKX5-3) alleles cause ear deformities in multiple species, including the “misplaced ears” phenotype in mice (Munroe et al., 2009), the dumbo (dmbo) phenotype of “fancy” rats (Kuramoto et al., 2010), and oculoauricular syndrome in humans (Kuramoto et al., 2010; Si et al., 2020).