CXCL16 and neoplasm: In the current study, the secretion of interleukin-6 (IL-6), granulocyte colony-stimulating factor (GCSF) and chemokine (C-X-C motif) ligand 16 (CXCL16) was increased by the STK24-knockdown tumor cells in comparison to the secretion by the control-pEGFP tumor cells (Fig. 8).