X-Linked Alpha Thalassemia Mental Retardation Syndrome (ATR-X)
Severe Mental Retardation............100%
Normal Birth Weight...................... 96%
Neonatal Hypotonia....................... 92%
Seizures.......................................... 40%
Characteristic Face........................ 93%
Microcephaly................................. 71%
Genital Abnormalities..................... 96%
Skeletal Abnormalities................... 91%
Short Stature................................... 76%
****All Statistics are taken from a report titled "Clinical and Hematologic Aspects of the X-Linked Alpha Thalassemia/Mental Retardation Syndrome (ATR-X) published in the American Journal of Medical Genetics 55:288-299 (1995).