Eight immune factors (IFT57, MAL, ANXA4, SCRN1, LTBR, KIFAP3, HSPA5, and LTN1) were positively correlated with poor prognosis of ovarian cancer, whereas six immune factors (PSMB9, FOXJ1, CTSH, MIF, CTSD, and PSMB8) were negatively correlated with poor prognosis of ovarian cancer. This evidence concerns the gene PSMB9 and ovarian cancer.