Upon validation with complementary IHC staining for FFPE HGSOC tissue specimens, we identified six protein biomarkers to predict the prognosis of HGSOC; expression levels of AAT, NFKB, PMVK, VAP1, FABP4, and PF4 in ovarian cancer tissue were associated with PFS. This evidence concerns the gene NFKB1 and ovarian carcinoma.