Table 1.

Schematic overview of the different types of carrier screening, including examples

Type	Targeted	Expanded
Ancestry‐based	Beta‐thalassaemia (Mediterranean region) Tay–Sachs disease (Ashkenazi Jewish population)	Ashkenazi Jewish screening panels
Universal	Cystic fibrosis (U.S. population)	Broad‐scope screening panels for a general population