It was reported that Cebpa and Cebpb play pivotal and partially overlapping roles in determining airway epithelial differentiation.30Cebpa suppresses macrophage differentiation by activating QKI‐5 and then down‐regulating CSF1R expression.31 Recently, Mackert and his colleagues also discovered that Cebpa expression was significantly reduced in MDSCs from tumor‐bearing mice compared to tumor‐free animals. Here, CSF1R is linked to neoplasm.