We conducted a PubMed search for relevant studies published up to October 08, 2024, using the search terms ((“PARP inhibitor” [All Fields] OR “rucaparib” [All Fields] OR “olaparib” [All Fields] OR “niraparib” [All Fields]) AND “maintenance therapy” [All Fields] AND (“ovarian cancer” [All Fields]) AND (“BRCA” [All Fields] OR “BRCA1” [All Fields] OR “BRCA2” [All Fields] OR “BRCA1/2” [All Fields])), without language restrictions. Here, BRCA1 is linked to ovarian cancer.