ABCB6 and diffuse large B-cell lymphoma: Theophraste et al. developed and validated a new immunohistochemical algorithm for DLBCL classification based on traditional gene expression profiling (GEP), incorporating one GCB marker (CD10) and three ABC markers (FOXP1, Mum-1, IgM) (see Supplementary Table 2 for details) [21].