ITGA7 and colorectal carcinoma: To investigate whether miR-766 was responsible for circ_ITGA7-mediated growth and radiosensitivity of CRC cells, miR-766 mimic was transfected into circ_ITGA7-increased HCT116 and DLD1 cells, as expected, miR-766 mimic rescued circ_ITGA7-induced decrease of miR-766 expression level (Figure 4a).