FOXC2 and Down syndrome: Of these 63 children, 37 children had an isolated RS, while 26 children had additional anomalies (n = 19) or a syndrome (n = 7); 2 children were diagnosed with Stickler syndrome, 1 child with Nager syndrome, 1 child with Shprintzen–Goldberg syndrome, 1 child with acampomelic dysplasia, 1 child with a FOXC2 mutation, and 1 child with a MFDM mutation.