CXCL12 and head and neck squamous cell carcinoma: Additionally, it is identified that different single nucleotide polymorphisms (SNPs) of CXCL12 participates in various disease such as neck and head squamous cell carcinoma [12], myelodysplastic syndromes [13], multiple sclerosis [14], etc. Here, we choose six SNPs (rs1065297, rs1801157, rs266089, rs197452, rs2839693 and rs10793538) of CXCL12 to explore which SNPs are associated with the risk of CAD.