We found that in both OVCAR3 and SKOV3 ovarian cancer cells, Olaparib treatment induced an elevated NF‐κB activation evidenced by both increased phosphorylation of NF‐κB subunit p65 (Figure 2D,E) as well as NF‐κB nuclear translocation (Figure 2E). Here, NFKB1 is linked to ovarian cancer.