Hypofractionated Pencil-Beam Scanning Intensity-modulated Proton Therapy (IMPT) in Recurrent Rectal Cancer
Public ClinicalTrials.gov record NCT04827732. 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
Hypofractionated Pencil-Beam Scanning Intensity-modulated Proton Therapy (IMPT) in the Reirradiation of Locoregionally Recurrent Rectal Cancer - IMPARC
Study identification
- NCT ID
- NCT04827732
- Recruitment status
- Terminated
- Study type
- Interventional
- Phase
- Not applicable
- Lead sponsor
- Washington University School of Medicine
- Other
- Enrollment
- 15 participants
Conditions and interventions
Conditions
Interventions
- Hypofractionated Pencil-Beam Scanning Intensity-modulated Proton Therapy Radiation
- MEVION S250i Hyperscan and Adaptive Aperture Proton Therapy Machine Device
Radiation · Device
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
- May 3, 2021
- Primary completion
- Jul 28, 2024
- Completion
- Nov 17, 2024
- Last update posted
- Sep 28, 2025
2021 – 2024
United States locations
- U.S. sites
- 1
- U.S. states
- 1
- U.S. cities
- 1
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Washington University School of Medicine | St Louis | Missouri | 63110 | — |
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 NCT04827732, 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 Sep 28, 2025 · Synced Jun 25, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04827732 live on ClinicalTrials.gov.