What are the characteristics of Trisomy 18?
The genetic material from the extra eighteenth chromosome can cause a variety of problems with varying severity. Just as children with Down syndrome can range from mildly to severely affected, the same is true for children with Trisomy 18. This means that there is no hard and fast rule about what Trisomy 18 will mean for your child. However, statistics show that there is a high mortality rate for children with Trisomy 18 before or shortly after birth.
