GRIN2D and Coffin-Siris syndrome: The results revealed patient was heterozygous for three different sequence variants (KMT2E, ARID1A, and GRIN2D) that were consistent with autosomal dominant genetic disorders (O’Donnell-Luria-Rodan syndrome, Coffin-Siris syndrome, and GRIN2D-related developmental and epileptic encephalopathy).