Case Series of Nizon-Isidor Syndrome by Heterozygous Variants in MED12L With Further Evidence of Mitotic Instability in One Case With Diploid-Triploid Mosaicism. - Stewart R; Ezell KM; Bell DS; Corner B; McMinn A; Cogan JD; Hamid R; Rives L; Phillips JA 3rd; Paddu N; Srivastava G; Marom R; et al. (American journal of medical genetics. Part A, 2026)