Based on their inflammatory activity, cytokines are divided into pro‐inflammatory (IL‐6, IL‐17, IL‐18, TNF‐α, interferon gamma [IFN‐γ], etc) 5 and anti‐inflammatory (Il‐4, IL‐10, IL‐13, etc) ones, whereas several cytokines have a dual role (IL‐10, IL‐22, TGF‐β1).6 Interleukin‐10, an anti‐inflammatory cytokine, has dual functions, being both immune‐suppressive (tumor‐inhibiting) and immune‐stimulating (tumor‐promoting), and may, therefore, influence tumor susceptibility and development. This evidence concerns the gene IL13 and neoplasm.