CD4 and neuroblastoma: 11q‐deleted NB displayed higher absolute proportion (score) of CD8+ T cells, Tregs, Tfh cells, γδ T cells, M0, M1, and M2 macrophages compared to MYCN‐amplified NB and higher resting CD4+ memory T cells and activated NK cells compared to MYCN‐amplified NB and others (P < 0.05) (Fig. 1B).