CXCL12 and acute lymphoblastic leukemia: In vitro, maraviroc inhibited ALL cell growth, induced apoptosis, decreased migration to C-X-C motif chemokine ligand 12 (CXCL12) and CXCL13, decreased adhesion to fibronectin and vascular cell adhesion molecule 1, and down-regulated Jak/STAT signaling.