IL6 and ovarian cancer: It is reported that the inflammatory response involved in the pathogenesis of ovarian cancer, for the malignant ascites containing a large number of exfoliated cancerous cells, which may become a source of cancer cells metastasis and peritoneal implantation [7–9]; high concentrations of pro-inflammatory cytokines such as IL-6, IL-8 contained in ascites can promote cancer cell growth and metastasis, which all can accelerate the progress of the disease, reducing the treatment effect and worsening the prognosis [10–12].