Among these, expression levels for ten genes (including CD74, CLU, MFAP2, MFSD6, PSMB9, LAMC2, CXCR4, CXCL1, CCL20, and PAG1) were significantly increased in ovarian cancer (p < 0.001, Figure 4A). Here, PSMB9 is linked to ovarian carcinoma.