Life sciences · Phase 2 Trial
ClinicalTrials.gov · October 7, 2026
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Phase 2 Trial.
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Registry record from ClinicalTrials.gov (NCT04701307). This is a study registration, not published results. Lead sponsor: M.D. Anderson Cancer Center. Recruitment status: ACTIVE_NOT_RECRUITING. Phase: PHASE2. Study type: INTERVENTIONAL. Enrollment: 48 participants (ESTIMATED). Conditions: Lung Small Cell Carcinoma, Neuroendocrine Carcinoma, Stage III Lung Cancer AJCC v8, Stage IIIA Lung Cancer AJCC v8, Stage IIIB Lung Cancer AJCC v8, Stage IIIC Lung Cancer AJCC v8. Interventions: BIOLOGICAL: Dostarlimab; DRUG: Niraparib. Primary outcome measures: 6-month Progression free survival (PFS) , Time from the start of study treatment to the earlier date of assessment of progression or death by any cause in the absence of progression, assessed at 6 months; Objective response rate (ORR) , At 3 months. Brief summary: This phase II trial studies the effect of niraparib and dostarlimab in treating small cell lung cancer and other high-grade neuroendocrine carcinomas. Niraparib is an inhibitor of PARP, an enzyme that helps repair deoxyribonucleic acid (DNA) when it becomes damaged. Blocking PARP may help keep cancer cells from repairing their damaged DNA, causing them to die. PARP inhibitors are a type of targeted therapy. Immunotherapy with monoclonal antibodies, such as dostarlimab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving niraparib and dostarlimab may help to control the diseases.