On the other hand, the concentrations of serum MCP2 demonstrated an increased trend in patients with CAD and significantly decreased in patients with CAD recovery (control: 13.89 ± 1.36 pg ml−1; CAD: 18.87 ± 1.98 pg ml−1; CAD recovery: 10.25 ± 1.52 pg ml−1, p < 0.05). The gene discussed is CCL8; the disease is coronary artery disorder.