TNF and hepatocellular carcinoma: TNF-α-induced small ubiquitin-like modifier (SUMO) modification of CPAP is required for IκB kinase (IKK)-mediated NF-κB activation in HCC cell lines and promotes the growth of HCC cells, suggesting that CPAP is critical for the association between NF-κB and inflammation-related diseases, such as HCC [34].