Several studies reported that tumor necrosis factor α (TNF-α), TGF-β, IL-1/IL-1β, IL-6, IL-7, IL-10, IL-13, IL-19, IL-20, colony-stimulating factor-1, IL-15, IL-17, IL-22, IL-23, and IL-35 are increased in concentrations in patients with BC.29 Here, IL6 is linked to breast cancer.