CTNND1 and cleft palate: Genetic variation in CTNND1, which encodes for the armadillo-repeat protein p120-catenin (p120), is associated with human birth defects, most notably non-syndromic cleft palate and blepharocheilodontic (BCD) syndrome, which involves eyelid, lip and tooth anomalies [MIM: 617681] (1–3).