6Sep/093
Triple X Syndrome
Posted by admin
Triple X Syndrome is a rare chromosomal abnormality that affects only girls, in which the child will have three X chromosomes instead of two. Normally, everyone has 46 chromosomes; two of these 46 chromosomes are sex chromosomes and define whether a person is a boy or girl. Girls typically have two X chromosomes, and boys have one X chromosome and one Y chromosome. Triple X syndrome is also called triplo-X, trisomy X, XXX syndrome, and 47 XXX.
Diagnosis
Triple X may be found during prenatal genetic testing, such as amniocentesis, or it may be identified later as part of an evaluation of developmental delay in a child.