The cytokine IL‐6 and chemokines CCL20, CXCL8, CXCL9, and CCL8 have previously been linked to overall survival in various cancers (Denkert et al., 2010; Farmaki et al., 2016, p. 8; Knüpfer and Preiß, 2007; Todorović‐Raković and Milovanović, 2013). This evidence concerns the gene CXCL9 and cancer.