CXCL8 and neoplasm: Additionally, the median CXCL8 (IL8) gene expression in normal tissue was 177 (Q1: 70, Q3: 469) compared to 3407 (Q1: 1399, Q3: 7577) in tumour tissue and 2070 (Q1: 910.5, Q3: 3912.5) in metastatic tissue (p= 3.48 × 10−132, Kruskal–Wallis test; Figure 5C).