The previous studies had shown the association of a single nucleotide polymorphism (SNP) in the NOS3 gene (rs1799983) with the risk of coronary artery disease and venous thromboembolism (VTE) [9]–[13], and two other polymorphisms of NOS3 (2786 T/C and intron4, 27 bp repeat) were associated with the susceptibility to VTE in the Caucasian population [14]. The gene discussed is NOS3; the disease is venous thromboembolism.