CTNND1 and cleft lip: Others have previously noted that epithelial loss of p120-catenin results in cleft lip in mice (Cox et al., 2018), and we recapitulated this in embryos with conditional deletion of Ctnnd1 driven by the craniofacial ectoderm Cre, Crect, which we confirmed mediated loss of p120-catenin specifically within the epithelium in Ctnnd1f/f; CrectTg/0 mutant embryos (Fig. S2).