To determine whether the absence of myeloid NF‐κB p50 slows high‐risk neuroblastoma tumor growth, 9464D cells were inoculated into the flanks of p50(f/f), WT, or p50(f/f);Lys‐Cre mice and tumor volumes were monitored (Fig. 1A,B). Here, NFKB1 is linked to neoplasm.