The DLBCL cell lines, SU-DHL4 (DHL4), SU-DHL6 (DHL6), OCI-LY7 (LY7), HBL1, TMD8, U-2932, Karpas 422 (K422), Toledo and OCI-LY4 (LY4), were cultured as previously described.25 (link) The identities of the DLBCL cell lines used in this study were confirmed via STR profiling with PowerPlex ®1.2 system (Promega, Madison, WI, USA). DHL4, DHL6, LY7, HBL1 and U-2932 were previously characterized as BCR-dependent and K422, Toledo and LY4 were BCR-independent.3 (link),9 (link)