A Study of Niraparib in Patients With Ovarian Cancer Who Have Received Three or Four Previous Chemotherapy Regimens


About this study

This is a Phase 2, open-label, single arm study to evaluate the safety and efficacy of niraparib in ovarian cancer patients who have received three or four previous chemotherapy regimens. Niraparib is an orally active PARP inhibitor. Niraparib will be administered once daily continuously during a 28-day cycle. Health-related quality of life will be measured by Eastern Cooperative Oncology Group performance status (ECOG). Safety and tolerability will be assessed by clinical review of adverse events (AEs), physical examinations, electrocardiograms (ECGs), RECIST tumor assessments and safety laboratory values.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Patients must agree to undergo tumor HRD testing and blood gBRCAmut status testing.
  • Patients of childbearing potential must have negative pregnancy serum test within 72 hours of being dosed
  • Patients must have histologically diagnosed high-grade (Grade 2 or 3) serous epithelial ovarian, fallopian tube, or primary peritoneal cancer with recurrent disease and must have been previously treated with chemotherapy and experienced a response lasting at least 6 months to first-line platinum based therapy.
  • Patients Must have completed 3 or 4 previous chemotherapy regimens.
  • Patients must have completed their last chemotherapy regimen > 4 weeks prior to treatment initiation.
  • Patients must have measurable disease according to RECIST (v.1.1).
  • Patients must have formalin-fixed, paraffin-embedded tumor samples available from the primary or recurrent cancer or agree to undergo fresh biopsy prior to study treatment initiation.
  • Patients must agree to blood samples during screening and at the end of treatment for cytogenetic analysis.

Exclusion Criteria:

  • Patients must not have any known, persistent (> 4 weeks), ≥Grade 3 hematologic toxicity or fatigue from prior cancer therapy requiring treatment with transfusion or growth factors on more than 1 occasion within 1 year prior to study therapy.
  • Patients must not have received pelvic radiotherapy as treatment for primary or recurrent disease within 1 year of the first dose of study treatment.
  • Patients must not have symptomatic uncontrolled brain or leptomeningeal metastases.
  • Patients must not be considered a poor medical risk due to a serious, uncontrolled medical disorder, nonmalignant systemic disease or active, uncontrolled infection.
  • Patients must not have received a transfusion (platelets or red blood cells) within 4 weeks of the first dose of study treatment.
  • Patients must not have known history or current diagnosis of myelodysplastic syndrome (MDS) or acute myeloid leukemia (AML).

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Andrea Wahner Hendrickson, M.D.

Closed for enrollment

Contact information:

Cancer Center Clinical Trials Referral Office


More information


  • Late-line treatment options for patients with ovarian cancer are few, with the proportion of patients achieving an overall response typically less than 10%, and median overall survival after third-line therapy of 5-9 months. In this study (QUADRA), we investigated the activity of niraparib monotherapy as the fourth or later line of therapy. Read More on PubMed

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