C5 and coronary artery disorder: Associations with CAD significant at 5% level were found for polymorphisms in interleukin 9 [(IL9) C4244T, P = 0.01], nitric oxide synthase 3 [(NOS3) A498G, P = 0.05], complement component 5 [(C5) A2416G, P = 0.04], interleukin 4 receptor [(IL4R T1682C, P = 0.01 and A1902G, P = 0.04] and eotaxin [(SCYA11) G361A, P = 0.04].