Genome wide associated studies (GWAS) have identified the INK4b-ARF-INK4a locus located on chromosome 9p21 with multiple single nucleotide polymorphisms (SNPs) linked to coronary artery disease (CAD) (39–41), atherosclerosis (42), aortic aneurysm (43), ischemic stroke (41), type II diabetes (44) as well as specific cancer subtypes (45, 46). The gene discussed is CDKN2A; the disease is ischemic stroke.