Trisomy 13, also called Patau syndrome, is not usually on your radar or even discussed in most pregnancies. Unfortunately for some, though, it might be detected in prenatal screening. If you are in ...

The recurrence risk with trisomy is 1% to 2% or the maternal age risk, whichever is greater. [2] There is a recurrence risk of 5% to 10% for an affected live-born infant in cases when a parent has ...