CXCL1 and cancer: Most up‐regulated genes in subgroup one was implicated in functions related to tumourigenesis such as epithelium–mesenchymal transition (EMT), migration, cell invasion and survival of cancer cells (ITGB1, SNAI1, AXL, HIF1A, SNAI2, LILRB2, TWIST1), and cytokines and chemokines involved in the recruitment of myeloid cells and neutrophils (CXCL8, CXCL1, IL‐6 and CD276).