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NCT05417516 · ClinicalTrials.gov record · last posted 2026-07-07

A Randomized Trial of Five Fraction Partial Breast Irradiation (RAPID2)

StatusRecruiting
PhasePhase 3
Started2023-11-20
View on ClinicalTrials.gov ↗
from the ClinicalTrials.gov record
The primary objective of this study is to determine in women with node negative BC ≤3cm in size, if PBI compared to WBI, both given once-a-day over 1 week following BCS, is non-inferior for LR and reduces adverse cosmesis. The primary outcomes are LR and patient-assessed cosmesis at 3 years post randomization.

Amendment record 26 amendments on the ClinicalTrials.gov record

This ClinicalTrials.gov record has been amended 26 times since 2022-06-09; most recent amendment 2026-07-03. DataLookout shows field-level changes from the day a trial enters its daily monitoring; earlier amendments are counted here from the ClinicalTrials.gov version history. See every version on ClinicalTrials.gov ↗

2023-12-01
Status change Not Yet Recruiting→Recruitingv5
Trial Details
NCT Number NCT05417516
Lead Sponsor Ontario Clinical Oncology Group (OCOG)
Collaborators: Canadian Institutes of Health Research (CIHR)
Conditions Breast Neoplasm Female, Radiotherapy, Cosmetic Outcome
Enrollment 910 participants
Start Date 2023-11-20
Primary Completion 2029-11 (estimated)
Study Completion 2031-11 (estimated)
Updated on ClinicalTrials.gov 2026-07-07