Neutrophils are another important immune cell type that is attracted by tumor‐derived factors, including G‐CSF and S100 proteins, as well as by the CXCL12/CXCR4 axis (Dumitru et al, 2013; Leach et al, 2019; Gonzalez et al, 2020; Wang et al, 2020). Here, CSF3 is linked to neoplasm.