Table 1.

Outflow Tract Defects in Rac1 ^SHF Hearts (E14.5‐P0)

	TGA	PTA	DORV	Overriding Aorta	Aortic Atresia	Vascular Ring
n=64	1	6	23	32	5	12
%	1.6	9.4	35.9	50	7.8	18.8

All 64 Rac1 ^SHF hearts had ≥1 OFT defect. No OFT defects were found in Rac1 ^f/f hearts (n=36). DORV indicates double‐outlet right ventricle; PTA, persistent truncus arteriosus; TGA, transposition of great arteries.