Tetrasomy X syndrome
ORPHA:9· ICD-10 Q97.1
Definition
Tetrasomy X is a sex chromosome anomaly caused by the presence of two extra X chromosomes in females (48,XXXX instead of 46,XX).
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
ORPHA:9· ICD-10 Q97.1
Tetrasomy X is a sex chromosome anomaly caused by the presence of two extra X chromosomes in females (48,XXXX instead of 46,XX).