Atrial Septal Defect 1, also known as atrial heart septal defect 1, is related to atrial heart septal defect and autism spectrum disorder. An important gene associated with Atrial Septal Defect 1 is BMP2 (Bone Morphogenetic Protein 2), and among its related pathways/superpathways are Mesenchymal Stem Cells and Lineage-specific Markers and Sulfur amino acid metabolism. Affiliated tissues include heart and lung, and related phenotypes are atrial septal defect and bicuspid aortic valve