Plain-English translation of NCT04025164 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
Read our Breast Cancer research guide →This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
After breast-conserving surgery, women with invasive breast cancer typically receive radiation therapy to lower the risk of cancer returning. This trial is testing whether a shorter, more intensive radiation schedule (completed in 3 weeks) works just as well as the standard schedule (5 weeks) at preventing the cancer from coming back in the same breast or nearby lymph nodes.
Radiation therapy after breast surgery is important for preventing recurrence, but the standard treatment takes 5 weeks and can be difficult for patients to fit into their lives. Researchers want to know if a faster schedule can deliver the same protection in less time, making treatment more convenient without sacrificing safety or effectiveness.
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If you join this study, you will be randomly assigned to receive either the faster 3-week radiation schedule or the standard 5-week schedule. You will receive radiation therapy 5 days a week to your whole breast and the area where the tumor was removed. The study team will follow you for 10 years with regular visits to check for cancer recurrence, side effects, and how well the treatment worked.
AI-generated summary from trial data · Jun 18, 2026 · Not medical advice
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