A century after Down syndrome was first described, scientists discovered that the root cause of this disorder is a condition called trisomy 21 ... displayed a range of symptoms, and he sought ...

What is trisomy 18 and why is it fatal? Trisomy 18 — also known as Edwards syndrome — is a chromosomal condition that is fatal in all but very rare cases, Dr. Silvana Ribaudo, an ob-gyn at ...

Antenatal diagnosis of Trisomy 13 is often made by karyotyping. This is typically performed after an assessment of risk for a chromosomal disorder is made by the maternal healthcare provider.

Recognition of the clinical features of Trisomy 13 syndrome, a common autosomal trisomy, provides the basis for diagnostic testing and counseling of families. This article provides a systematic ...