The genetics of cardiac birth defects

Area of Science:

• Cardiology
• Genetics
• Developmental Biology

Background:

• Congenital heart disease (CHD) arises from a combination of genetic and environmental influences.
• Rare single gene mutations are known causes for specific cardiac defects.
• The genetic basis for common forms of CHD remains largely unknown.

Purpose of the Study:

• To review the current understanding of genetic factors in cardiac malformations.
• To explore future strategies for investigating sporadic congenital heart disease as a complex trait.

Main Methods:

• Literature review of genetic causes of congenital heart disease.
• Discussion of approaches for analyzing complex traits in sporadic CHD.

Main Results:

• Established genetic causes for rare forms of CHD are summarized.
• Gaps in knowledge regarding common CHD etiologies are highlighted.

Conclusions:

• Further research is needed to unravel the complex genetic architecture of common congenital heart diseases.
• Treating sporadic CHD as a complex trait is a promising future direction.