MONDO_0011938 (atrial septal defect 2) is any atrial heart septal defect in which the cause of the disease is a mutation in the GATA4 gene. Also known as: ASD2, GATA4 atrial heart septal defect, atrial heart septal defect caused by mutation in GATA4, atrial heart septal defect type 2, atrial septal defect type 2.