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Monosomy 21
What is Monosomy 21?
Monosomy 21 is a chromosomal anomaly characterized by the loss of variable portions of a segment of the long arm of chromosome 21 that leads to an increased risk of birth defects, developmental delay and intellectual deficit.
Other condition names
21q deletion syndrome
21q- syndrome
Partial 21q monosomy
Prevalence
Worldwide: <1 in 1,000 000
Age of Onset
Antenatal
Neonatal
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on
"https://www.orphadata.com"
. Data version 1.3.16 / 4.1.7.