NFKB1 and borderline ovarian serous tumor: In OC, the expression levels of NF-κB proteins, p65 and p50, are elevated in malignant and borderline serous ovarian tumors [10,11] and the elevated expression of subunits of the NF-κB pathway, such as the activating IκB kinases (IKKs) β and ε, have been associated with worse overall survival in OC [12,13,14,15].