Whereas a positive but statistically not significant trend in IL‐8 secretion was observed in 769P (fold‐change: 1.3; n.s.)and, in particular, in the metastatic RCC cell lines Caki‐1 and ACHN (fold‐change: 4.7 and 1.45, respectively; n.s.; Figure S2C). The gene discussed is CXCL8; the disease is renal cell carcinoma.