Comparing 3 versus 6 Cycles of Chemotherapy Followed by Niraparib Maintenance in Women with Advanced HRD-Positive High-Grade Ovarian and Related Cancers

What this Trial Is About

Researchers are evaluating treatment options for patients with advanced HRD-positive high-grade ovarian cancer, fallopian tube cancer, primary peritoneal cancer, and clear cell carcinoma of the ovary who have no remaining tumor after primary tumor debulking surgery. This phase II, multicenter, randomized, open-label study aims to compare the recurrence-free survival between patients receiving 3 cycles versus 6 cycles of carboplatin plus paclitaxel chemotherapy, followed by maintenance therapy with niraparib. Participants are randomly assigned to one of two treatment groups one group receives 3 cycles of carboplatin plus paclitaxel chemotherapy followed by niraparib maintenance therapy, while the other group receives 6 cycles of the same chemotherapy followed by niraparib maintenance. Niraparib maintenance therapy starts at a dose of 200 mg or 300 mg once daily and continues until disease progression, unacceptable side effects, or other stopping criteria. Tumor assessments using CT or MRI scans are done at specific intervals, and the tumor marker CA-125 is measured every 12 weeks. Clinical visits for blood tests and toxicity monitoring occur regularly during chemotherapy and niraparib maintenance. During the study, participants will attend clinical visits for safety monitoring, including adverse event tracking, blood counts, physical exams every 12 weeks, and serum pregnancy tests for women of childbearing potential. Tumor evaluations occur 9 to 12 weeks after starting therapy and then every 6 months. The study will follow patients for up to 8 years to measure recurrence-free survival and other outcomes such as overall survival, quality of life, and safety. About 640 patients will be recruited across approximately 60 sites in six European countries over 36 months.

A Phase II Randomized, Open Label Non-inferiority Study of NiraParib Maintenance After 3 vs. 6 Cycles of Platinum-based Chemotherapy in completeLy debUlked Advanced HRDpositive High-grade Ovarian Cancer patientS in First Line Therapy