Recent findings indicate that metastasis-associated gene in colon cancer 1 ( MACC1 ) has an abnormal high expression in most malignant tumors.As a key regulator of HGF-MET signal pathway,MACC1 could obviously up-regulate the expression of MET and promote cancer cell's movement,invasion and metastasis.Further studies will shed light on elucidating the mechanisms of metastasis and may provide a new method for targeted therapy.