Targeted therapy is a type of treatment that blocks specific oncogenic molecules to diminish cancer growth and invasiveness, such as, trastuzumab (Herceptin) for human epidermal growth factor receptor 2 in breast cancer (33), imatinib (Gleevec) for BCR-Abl in chronic myelogenous leukemia (34), and bevacizumab (Avastin) for vascular endothelia growth factor (VEGF) in colorectal and lung cancer (35). This evidence concerns the gene VEGFA and chronic myelogenous leukemia, BCR-ABL1 positive.