It is reported that multiple chemokines, cytokines, and growth factors, such as monocyte chemotactic protein-1 (MCP-1), cyclophilin B, hepatoma-derived growth factor (HDGF), urokinase plasminogen activator (uPA), and interleukin (IL)-6, can promote MSCs recruitment to BC cells. The gene discussed is HDGF; the disease is breast cancer.