What gender does trisomy X affect?
Triple X syndrome, also called trisomy X or 47,XXX, is a genetic disorder that affects about 1 in 1,000 females. Females normally have two X chromosomes in all cells — one X chromosome from each parent. In triple X syndrome, a female has three X chromosomes.
How is trisomy X female diagnosed?
Trisomy X can be accurately diagnosed during pregnancy by chorionic villus sampling (CVS) or amniocentesis. A prenatal screening test called non-invasive prenatal testing (NIPT) or cell-free DNA testing can also check for trisomy X.