Comparison Between IORT and Postoperative Radiotherapy in Breast Conserving Surgery

May 28, 2025 updated by: Xiangyun Zong

Comparison of Satisfaction With Conserved Breast, Postoperative Complications and Tumor Control Between IORT and Postoperative Radiotherapy in Breast Conserving Surgery

To compare the satisfaction with conserved breast, acute and chronic postoperative complications and tumor control between intraoperative radiotherapy(IORT) and traditional postoperative radiotherapy following breast-conserving surgery (BCS).

Study Overview

Study Type

Interventional

Enrollment (Actual)

80

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Shanghai
      • Shanghai, Shanghai, China, 200233
        • Shanghai Jiao Tong University Affiliated Sixth People's Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Primary invasive breast cancer confirmed by pathology.
  • Maximum tumor diameter ≤3.5cm.
  • Clinical lymph nodes are negative.
  • Single or multiple tumors are located on the same side of the nipple and in the same quadrant.
  • ECOG status score ≤ 2.
  • With informed Consents.

Exclusion Criteria:

  • Previous history of breast cancer or other malignant tumors.
  • Inflammatory breast cancer; 3. Previous radiotherapy history.
  • Other diseases affecting radiotherapy, such as connective tissue disease, heart disease, lung disease and so on.
  • Patients who are not going to have the axillary lymph node surgery (including SLN and ALND) were excluded.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: IORT
intraoperative radiotherapy(IORT) in BCS.
intraoperative radiotherapy
Active Comparator: PORT
traditional postoperative radiotherapy following BCS.
postoperative radiotherapy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Rate of successful surgical procedure
Time Frame: immediately after surgery
the rate of successful breast conserving surgery
immediately after surgery
satisfaction with conserved breast
Time Frame: 1 month after surgery
the patients' satisfaction to postoperative breast including shape and feeling(Harvard/NSABP/RTOG BREAST COSMETIC SCALE: excellent, good, fair, poor)
1 month after surgery

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Rate of acute and chronic postoperative complications(CTCAE 3.0)
Time Frame: 1-month, 6-month after surgery
The incidence of adverse reactions at 1 and 6 months after operation
1-month, 6-month after surgery
DFS
Time Frame: 2-3 years after surgery
long-term postoperative disease-free survival
2-3 years after surgery
OS
Time Frame: 2-3 years after surgery
long-term postoperative overall survival
2-3 years after surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Investigators

  • Study Director: ZONG, MD, PhD, Shanghai Jiao Tong University affiliated 6th Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 1, 2021

Primary Completion (Actual)

February 28, 2025

Study Completion (Actual)

February 28, 2025

Study Registration Dates

First Submitted

March 2, 2021

First Submitted That Met QC Criteria

March 8, 2021

First Posted (Actual)

March 10, 2021

Study Record Updates

Last Update Posted (Actual)

June 2, 2025

Last Update Submitted That Met QC Criteria

May 28, 2025

Last Verified

January 1, 2023

More Information

Terms related to this study

Other Study ID Numbers

  • JTU-6H-20210227001

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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