As genome-wide association studies (GWASs) revealed an association of locus in the CXCL12 (CXC ligand 12), also known as stromal cell-derived factor 1 alpha and beta (SDF-1α and β), region with myocardial infarction (MI), a study was done to assess this clinically. This evidence concerns the gene CXCL12 and myocardial infarction.