Among MMPs, MMP-2 (gelatinase A) and MMP-9 (gelatinase B) are vital enzymes involved in the degradation of gelatin, collagen and laminin, main components of ECM [9] and high expressions of them are indicators of high invasive potential of cancer cells and are related to poor prognosis of patients [3, 10, 11]. This evidence concerns the gene MMP9 and cancer.