What Is Trisomy 18?

Rick Santorum has canceled campaign events to be with his hospitalized daughter, Bella, who suffers from Trisomy 18.

The study, titled, "Chromosome-Selective Sequencing of Maternal Plasma Cell-Free DNA for First-Trimester Detection of Trisomy 21 and Trisomy 18" was independently conducted and supported by a grant from the Fetal Medicine Foundation.

Rick Santorum has canceled campaign events to be with his hospitalized daughter, Bella, who suffers from Trisomy 18.

Rick Santorum has canceled campaign events to be with his hospitalized daughter, Bella, who suffers from Trisomy 18.

Trisomy 18, the genetic disorder that sent Rick Santorum's daughter Bella to the hospital Saturday evening, kills about 90 percent of children before or during birth and those that do live past birth suffer serious symptoms. Children with Trisomy 18,