Analyses were performed on the concentration of all members of the IL-1 family (IL-1α, IL-1β, IL-33, IL-18, IL-37, IL-36α, IL-36β, IL-36γ, IL-38, IL-36Ra and IL-1Ra) in the serum and peritoneal fluid of patients with ovarian cancer (representing the study group) and patients with benign ovarian tumors (representing the reference group). Here, IL18 is linked to ovarian cancer.