XCL1 and neoplasm: C-C Motif Chemokine Ligand 20 (CCL20)/C-C Motif Chemokine Receptor 6 (CCR6), C-C Motif Chemokine Ligand 25 (CCL25)/C-C Motif Chemokine Receptor 9 (CCR9), C-X-C Motif Chemokine Ligand 1 (CXCL1)/C-X-C Motif Chemokine Receptor 2 (CXCR2), CXCL8/C-X-C Motif Chemokine Receptor 1-2 (CXCR1-2), C-X-C Motif Chemokine Ligand 12 (CXCL12)/C-X-C Motif Chemokine Receptor 4 (CXCR4), and C-X3-C Motif Chemokine Ligand 1 (CX3CL1)/C-X3-C Motif Chemokine Receptor 1 (CX3CR1) are reported to promote tumor growth and inhibit apoptosis through the PI3K-Akt pathway [4].