Our study found that fibrinogen-like protein 2 (Fgl2) gene silencing activates angiopoietin/Tie system and induces myocardial microvascular endothelial Cells proliferation and cell migration, we also found that serum Fgl2 levels elevated in patients with acute coronary syndrome (ACS), these results are preliminary, but very meaningful [1,2]. This evidence concerns the gene FGL2 and acute coronary syndrome.