Therefore, our results validated the findings of Zhang et al. and Algars et al. We demonstrated that an altered M1/M2 ratio alone is an independent prognostic indicator for ovarian cancer patients (Table 3, Figure 5), which also implies that the chemotactic effect on monocytes/macrophages is not necessary for some immunosuppressive factors, such as MUC2, to influence patient prognosis. Here, MUC2 is linked to ovarian carcinoma.