Atrial Septal Defect 8, also known as asd8, is related to acquired laryngomalacia and acquired gastric outlet stenosis. An important gene associated with Atrial Septal Defect 8 is CITED2 (Cbp/P300 Interacting Transactivator With Glu/Asp Rich Carboxy-Terminal Domain 2). Affiliated tissues include heart and lung, and related phenotypes are atrial septal defect and anomalous pulmonary venous return