NFE2L2 and hepatocellular carcinoma: In hepatocellular carcinoma, the degradation of KEAP1 mediated by P62 assists the activation of NAD(P)H quinone dehydrogenase 1 (NQO1), heme oxygenase 1 (HO1), and ferritin heavy chain 1 (FTH1) down-stream of NRF2.