IGF2BP1 and hepatocellular carcinoma: CircMAP3K4, which encodes the peptide circMAP3K4-455aa, was also found in hepatocellular carcinoma, and circMAP3K4-455aa promoted HCC growth in vitro and in vivo, in which circMAP3K4 translation is dependent on m6A modification and is mediated by the recruitment of IGF2BP1, which is an E3 ligase.