_:vb50940763 "url:https://www.orpha.net/consor/cgi-bin/OC_Exp.php?lng=EN&Expert=402075"^^ . _:vb50940763 . _:vb50940763 . _:vb50940763 . _:vb50940763 "An aortic valve disease that is characterized by the presence of abnormal two-leaflet aortic valve in at least 2 first-degree relatives."^^ . _:vb50940763 . _:vb50940763 .