A Safety Study Adding Niraparib and Dostarlimab to Radiation Therapy for Rectal Cancers
Public ClinicalTrials.gov record NCT04926324. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase 1b/2 Trial of Preoperative Niraparib, Dostarlimab, and Hypofractionated Radiotherapy for the Treatment of Locally-advanced Rectal Cancers.
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
This clinical trial is designed to determine the maximum tolerated dose of niraparib when combined with dostarlimab and hypofractionated radiation for locally advanced rectal cancer. Once this is determined, this dose will be tested to identify what impact it has on the tumor as well as patient reported outcome measures.
Study identification
- NCT ID
- NCT04926324
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Phase 1
- Enrollment
- 3 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 18 Years and older
- Sex
- All
- Healthy volunteers
- Healthy volunteers not accepted
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Jul 6, 2022
- Primary completion
- Nov 17, 2024
- Completion
- Nov 23, 2025
- Last update posted
- Jun 28, 2026
2022 – 2025
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Holden Comprehensive Cancer Center at the University of Iowa | Iowa City | Iowa | 52242 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04926324, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Jun 28, 2026 · Synced Sep 2, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04926324 live on ClinicalTrials.gov.