MMP2 and neoplasm: The author also reported preferential localization of tumor-derived MCP-1, matrix metalloproteinase-2 (MMP-2), receptor activator of NF-kappaB (RANK), receptor activator of NF-kappaB ligand (RANKL), and tissue inhibitor of matrix metalloproteinase-1 (TIMP-1) and host-derived TNF-α and thrombopoietin (TPO) within host platelets.