{Reference Type}: Case Reports {Title}: Aortic valve atresia and type C interrupted aortic arch with circle of Willis dependent circulation: a case of successful biventricular repair in the neonatal period. {Author}: Yang EL;Bohun CM;Muralidaran A; {Journal}: Cardiol Young {Volume}: 33 {Issue}: 5 {Year}: May 2023 19 {Factor}: 1.023 {DOI}: 10.1017/S1047951122002876 {Abstract}: We report a rare case of aortic valve atresia and type C interrupted aortic arch with retrograde filling of the ascending aorta via the right common carotid artery through intracranial collateralisation and a presumed intact circle of Willis, who successfully underwent a complete biventricular repair in the neonatal period.