From 2014 through 2019, the US Food and Drug Administration (FDA) granted approval to six indications for poly (ADP-ribose) polymerase (PARP) inhibitors in advanced epithelial ovarian cancer (EOC). From 2022 through 2023, these six indications were withdrawn or narrowed after observation of a potential detrimental effect on overall survival (OS) in four randomized controlled trials. The indications for niraparib, olaparib, and rucaparib for the treatment of