The chemokines CXCL1, -2, -3, -5, and IL8 (CXCL8) were among the top-210 genes that were observed to be upregulated in metastases compared with primary tumours, and they showed highly correlated expression patterns (Figure 1, Supplementary Table 1, and Supplementary Figure 1). The gene discussed is CXCL8; the disease is neoplasm.