CXCL6 and cancer: In agreement with TCGA LUSC biopsies, expression of CXCL8, CXCL2, CXCL6, and CCL20 in individual cancer cell lines was positively correlated, whereas HERVH-CALB1 expression was negatively correlated with CXCL8 and CXCL2 expression (Supplemental Figure 17), consistent with control of neutrophil chemoattractant production by calbindin in a cancer cell–intrinsic manner.