Multiple factors including MCP‐1, MCP‐3, hepatocyte growth factor, scatter factor, neurotrophic factors, CXCL12, CSF‐1, and GM‐CSF mediate the chemoattraction of TAMs to the GBM microenvironment.4, 5, 6, 7, 8, 9, 10. The gene discussed is HGF; the disease is glioblastoma.