CXCR4 and acute myeloid leukemia: Two other reports also demonstrate antitumor and apoptosis‐promoting effects of the peptide inhibitor TN140 and anti‐CXCR4 monoclonal antibody (mAb) MDX‐1338 as monotherapy in immunodeficient mouse models engrafted with AML, NHL, or MM cells, respectively 54, 55.