The analysis showed that apolipoprotein C-II (APOC2), dedicator of cytokinesis protein 2 (DOCK2), ligand 7 (CXCL7) and vitamin D binding protein (VTDB) were activated, and complement 4A (C4A) were suppressed in diabetic patients and were associated with severe coronary artery stenosis. This evidence concerns the gene GC and coronary stenosis.