However, analysis of single‐cell RNA‐sequencing (RNA‐seq) of GB patient tumors revealed that tumor cells do not express CIITA nor genes encoding for MHC‐II antigen processing (CD74, HLA‐DMA, HLA‐DOA) and presentation (HLA‐DQA1, HLA‐DQB1, HLA‐DRA, HLA‐DRB1, HLA‐DRB5) (Fig. 1B). The gene discussed is CIITA; the disease is neoplasm.