CDK9 and hepatocellular carcinoma: Furthermore, transient transfection of miR‐206 significantly suppressed HCC cell proliferation, which was dramatically attenuated by cotransfection of miR‐206 inhibitor (Bell7402, P = 0.0143; HepG2, P = 0.0322) (Fig. 5B) or GV230‐CDK9 (Bell7402, P = 0.0236; HepG2, P = 0.0367) (Fig. 5C).