“…Colorectal cancer (CRC) is among the most frequently diagnosed cancer with more than 1 million new cases occurred every year worldwide and the second leading cause of cancer death in developed countries [1,2]. Despite recent advances in the clinical treatment of CRC [3][4][5][6], patients with metastatic CRC still have poor prognosis [7]. Clinical stage based on TNM classification system at diagnosis remains the most remarkable prognosis factor up to present [8], and the molecular mechanism involved in development and progression of CRC remains unclear [9].…”