KMT2D and Kabuki syndrome: Importantly, the narrow palate phenotype observed in our Mll4-cKO mice closely resembles a common craniofacial phenotype of Kabuki syndrome: the high-arched, narrow palate, reported in 72% (64/89) of individuals with Kabuki syndrome (Matsumoto and Niikawa, 2003; Porntaveetus et al., 2018).