- Conditions
- Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, BRCA-Associated Malignant Neoplasm, BRCA Hereditary Ovarian Carcinoma, Metastatic BRCA Hereditary Breast Carcinoma, Metastatic Breast Carcinoma, Metastatic Fallopian Tube Carcinoma, Metastatic Malignant Solid Neoplasm, Metastatic Ovarian Carcinoma, Metastatic Pancreatic Carcinoma, Metastatic Primary Peritoneal Carcinoma, Prognostic Stage III Breast Cancer AJCC v8, Prognostic Stage IV Breast Cancer AJCC v8, Stage III Fallopian Tube Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage III Pancreatic Cancer AJCC v8, Stage III Primary Peritoneal Cancer AJCC v8, Stage IV Fallopian Tube Cancer AJCC v8, Stage IV Ovarian Cancer AJCC v8, Stage IV Pancreatic Cancer AJCC v8, Stage IV Primary Peritoneal Cancer AJCC v8, Unresectable Breast Carcinoma, Unresectable Fallopian Tube Carcinoma, Unresectable Malignant Solid Neoplasm, Unresectable Ovarian Carcinoma, Unresectable Pancreatic Carcinoma, Unresectable Primary Peritoneal Carcinoma
- Interventions
- Dostarlimab, Niraparib, Biopsy, Biospecimen Collection, Computed Tomography, Magnetic Resonance Imaging
- Biological · Drug · Procedure
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 18 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2026
- U.S. locations
- 1
- States / cities
- Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced May 21, 2026, 10:13 PM EDT