In addition, these dead cells release the characteristic substances (for instance, monocyte chemoattractant protein-1 or MCP-1) which attract various cells (for example, leukocytes) towards them [19, 20], leading to the transfer of monocytes and MDSCs (myeloid-derived suppressor cells) into the tumor microenvironment [21–23]. This evidence concerns the gene CCL2 and neoplasm.