CSF1 and cancer: Our analysis revealed positive correlations between the HE4 and CA 125 concentrations in the total group of EOC (R = 0.47, p < 0.001), between the M-CSF and CA 125 (R = 0.4, p = 0.046) in patients with stage II cancer as well as between the HE4 and CA 125 levels according to the histopathological sub-types of EOC: endometrioid (R = 0.31, p = 0.037) or serous (R = 0.35, p = 0.008).