IL4 and coronary artery disorder: The comparison between the non‐CAD group and the CAD group showed that the CAD group had lower levels of IL‐4 (p < .001), IL‐12p70 (p = .004), IL‐17 (p = .001), IFN‐α (p = .003), and IFN‐γ (p = .011), while having a higher level of IL‐8 (p = .039).