Here, we used immunohistochemistry (IHC) on tissue microarrays (TMA) to examine the prognostic role of 29 previously identified RNA-based biomarkers for histotype-specific, early-stage ovarian carcinoma [11 biomarkers associated with CCC (ARPC2, CCT5, DDX24, GNB1, KCTD10, NUP155, RPL13A, RPL37, SETD3, SMYD2, TRIO), eight with EC (ABCA12, CECR1, ESRRG, KIF26B, MUC15, PDE4DIP, PIK3CA, RIMBP2), and 10 with MC (CENPI, CHEK1, FOXM1, KIF15, KIF23, KNTC1, MTGR1, NSD2, PARPBP, ZDHHC2)]. This evidence concerns the gene KIF26B and ovarian carcinoma.