Yan et al. investigated the association of NOS2 SNVs (see Section 2.3.6 on “Ischemic Stroke” regardingNOS2), and NOS3 SNVs G>T(D298E)(rs1799983) andT>C(rs2070744) with a risk of IS in 558 patients with IS and 557 healthy controls. Here, NOS2 is linked to ischemic stroke.