Other chemokines and their receptors with a central role in MSC tumor homing are C-C motif chemokine receptor 1 (CCR1), CCR7, CCR9, C-X3-C motif chemokine ligand 1 (CX3CL1), CXCR5, and CXCR6 (Honczarenko et al., 2006; Feng and Chen, 2009; Bao et al., 2012). The gene discussed is CCR1; the disease is neoplasm.