Atrial Septal Defect 7 with or Without Atrioventricular Conduction Defects, also known as asd with or without atrioventricular conduction defects, is related to atrial heart septal defect 7 and ventricular septal defect 3. An important gene associated with Atrial Septal Defect 7 with or Without Atrioventricular Conduction Defects is NKX2-5 (NK2 Homeobox 5). Affiliated tissues include heart and thyroid.