Objectives: The treatment of epithelial ovarian cancer has been revolutionized by the development of poly ADP-ribose polymerase (PARP) inhibitors which offer maintenance therapy options that extend progression-free survival (PFS). Methods: Patients from sixteen institutions in Turkey who had International Federation of Gynecology and Obstetrics stage III or IV epithelial ovarian cancer and complete or partial response to at least four cycles of platinum-based che motherapy were included in this retrospective study regardless of BRCA status and recurrence disease. Results: A total of 67 patients were evaluated. The median age was 58. The median follow-up was 17.5 months. Median PFS was 8.3 months in BRCAwt and 10.9 months in BRCAmut group (p=0.033). There was no significant difference in mPFS between primary and recurrent patients (10.2 vs. 9.4 months, p=0.328). The most common grade 3/4 adverse events were anemia (32.8%), thrombocytopenia (16.4%), and neutropenia (16.4%). Conclusion: The Turkish EAP's real-world data supports the efficacy and tolerability of niraparib in routine clinical prac tice and complements findings from randomized phase III trials. Keywords: BRCA, maintenance, niraparib, ovarian cancer, toxicity
Corresponding Author: Kadriye Bir Yucel