Annexin V staining was used to detect apoptotic cells during the generation of PARPi‐resistant ovarian cancer cells, and the KAT6A level in non‐apoptotic (DTP) cells was much higher than that in apoptotic cells (Figure 1G), indicating that ovarian cancer cells with high KAT6A levels survived PARPi treatment. Here, KAT6A is linked to ovarian cancer.