We showed no significant disparity in the distribution of PD-L1 and PD-L2 positive myeloid and plasmacytoid DCs in the peripheral blood, peritoneal fluid, and tumor tissue in the different clinicopathological features of the OC patients, i.e., the FIGO stage, grade, and types of OC (p > 0.05). Here, CD274 is linked to neoplasm.