VEGFA and colorectal carcinoma: For example, circCCT3 regulates the expression of vascular endothelial growth factor A (VEGFA) and WNT by sponging mir-613 [8], while circ_0056618 promotes the expression of C-X-C chemokine receptor type 4 and VEGFA by sponging mir-206 [9], thus stimulating CRC angiogenesis.