Integrin subunit alpha M (ITGAM) gene encodes Integrin αM (CD11b), which might promote the development and progression of abdominal aortic aneurysm via mediating the adhesion of endothelial cells and the transendothelial migration of circulating monocytes/macrophages (53). The gene discussed is ITGAM; the disease is abdominal aortic aneurysm.