cIAP1/2 are functional E3 ligases in ABC DLBCL that promote NF-κB activation
cIAP1/2 reside in the CBM complex and deposit K63-polyubiquitin chains there
cIAP1/2 help to recruit LUBAC and IκB kinase to the CBM complex
SMAC mimetics degrade cIAP1/2 and block growth of BCR-dependent ABC DLBCL xenografts