title: De novo translocation involving chromosomes 2, 8, and 20.
mesh_terms: D000015:Abnormalities, Multiple / Q000235:genetics*; D002675:Child, Preschool; D002869:Chromosome Aberrations / Q000235:genetics*; D025063:Chromosome Disorders; D002900:Chromosomes, Human, 1-3 / Q000648:ultrastructure*; D002903:Chromosomes, Human, 19-20 / Q000648:ultrastructure*; D002906:Chromosomes, Human, 6-12 and X / Q000648:ultrastructure*; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D008297:Male; D014178:Translocation, Genetic