The Klinefeltermongolism type of double aneuploidy.
D000782:Aneuploidy; D002875:Chromosomes; D004314:Down Syndrome / Q000235:genetics*; D006801:Humans; D007713:Klinefelter Syndrome / Q000235:genetics*
CHROMOSOMES; KLINEFELTER'S SYNDROME/genetics; MONGOLISM/genetics