Atrial septal defect is one of the most common forms of congenital heart malformation (cardiac malformations).
Etiology
Locus 14q12: mutations in the alpha-myosin heavy chain gen MYH6
References
Packham EA, David Brook J. Interaction makes the heart grow stronger. Trends Mol Med. 2003 Oct;9(10):407-9. PMID: #14557051#