pDC is the main subtype of DCs in the tumor sites of ovarian cancer (33), and the infiltration of pDCs in the ovarian cancer microenvironment has a negative association with the prognosis (34), but the pDC in response to TLR could release IFN-α, although such type of function is weaker than that in the peripheral blood (35). The gene discussed is PDC; the disease is neoplasm.