In the BL cell lines, IKKα/β, p65 and p50 were more highly expressed in NAMALWA cells than in Daudi cells, whereas IκBα exhibited lower expression in NAMALWA cells (Supplementary Figure S12a), which suggests that the level of NF-κB activation was higher in NAMALWA cells. Here, NFKB1 is linked to Burkitt lymphoma.