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NCT05866458 · ClinicalTrials.gov record · last posted 2026-06-17

Radiation OmisSion in PAtients With CLinically Node Negative Breast Cancer Undergoing Lumpectomy

Study acronym: ROSALIE
StatusRecruiting
PhaseNot specified
Started2024-03-12
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To de-escalate radiation therapy in women with breast cancer.

Amendment record 16 amendments on the ClinicalTrials.gov record

This ClinicalTrials.gov record has been amended 16 times since 2023-05-10; most recent amendment 2026-06-15. 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 ↗

2024-03-12
Status change Not Yet Recruiting→Recruitingv3
Trial Details
NCT Number NCT05866458
Lead Sponsor Ontario Clinical Oncology Group (OCOG)
Collaborators: Canadian Institutes of Health Research (CIHR), Hamilton Health Sciences Corporation
Conditions Breast Cancer
Enrollment 352 participants
Start Date 2024-03-12
Primary Completion 2031-10 (estimated)
Study Completion 2031-10 (estimated)
Updated on ClinicalTrials.gov 2026-06-17