Analyzing radiation therapy outcomes in HER2 positive breast cancer

Prospective Cohort for Tumor Bed Boost Radiotherapy in HER2 Positive Breast Cancer

Observational Samsung Medical Center · NCT05893966

This study looks at how well radiation therapy works for women with HER2 positive breast cancer after they have had surgery, to see if it helps prevent cancer from coming back and to track any side effects over seven years.

Quick facts

Study typeObservational
Enrollment400 (estimated)
Ages19 Years and up
SexFemale
SponsorSamsung Medical Center Academic / other
Drugs / interventionsradiation
Locations1 site (Seoul)
Trial IDNCT05893966 on ClinicalTrials.gov

What this trial studies

This observational study focuses on evaluating the treatment outcomes of postoperative radiation therapy, specifically the tumor bed boost, in female patients with HER2 positive breast cancer who have undergone breast conserving surgery. The study aims to assess various outcomes over a seven-year period, including ipsilateral breast tumor recurrence, disease-free survival, locoregional recurrence, overall survival, and adverse events related to radiation therapy. Participants will undergo multi-dimensional assessments to monitor their disease status and any side effects from the treatment.

Who should consider this trial

Good fit: Ideal candidates for this study are female patients aged 19 and older with confirmed HER2 positive invasive breast cancer who have undergone breast conserving surgery.

Not a fit: Patients with ductal carcinoma in situ or those who have previously received radiation therapy to the ipsilateral breast may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into optimizing radiation therapy for HER2 positive breast cancer, potentially improving patient outcomes.

How similar studies have performed: While there have been studies on radiation therapy in breast cancer, this specific focus on tumor bed boost in HER2 positive patients is relatively novel and not extensively tested.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Female patients with age minimum 19
* Pathological confirmation of HER2+ invasive breast cancer
* Eastern Cooperative Oncology Group performance status 0-2
* Informed consent of the participant

Exclusion Criteria:

* Pathological confirmation of ductal carcinoma in situ of the breast
* Previous history of radiation therapy to ipsilateral breast

Where this trial is running

Seoul

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Breast Cancer
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.