CXCR2 and cancer: The human chemokine receptor (CXCR2) is a G protein-coupled receptor (GPCR) that gained the attention of the drug discovery community due to its promise as a target for the treatment of various inflammatory disorders and different types of cancer (Ha et al., 2017; Poeta et al., 2019; Qiao et al., 2017; Cheng et al., 2019).