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.