Impact of Propranolol Strategies on Myocardial Injury After Breast Cancer Surgery (B-BIT)

May 12, 2026 updated by: Chang-Ik Yoon

A Pragmatic Clinical Trial to Evaluate the Impact of Clinical Propranolol Strategies on Myocardial Injury After Non-cardiac Surgery (MINS) in Patients Undergoing Breast Cancer Surgery With Hypertension or Angina

This study aims to evaluate the impact of using propranolol, a non-selective beta-blocker, on preventing myocardial injury after non-cardiac surgery (MINS) in breast cancer patients who also have hypertension or angina. Stress from surgery and anesthesia can increase sympathetic activity and inflammation, which may lead to heart stress. This pragmatic clinical trial will compare patients who are prescribed propranolol as part of their routine care with those who are not. Researchers will analyze blood samples and surgical tissues collected during normal treatment to observe changes in heart health and the tumor microenvironment.

Study Overview

Detailed Description

Breast cancer is the most common malignancy among women in Korea. Perioperative stress and acute physiological stimuli from surgery and anesthesia increase catecholamine secretion, which can lead to Myocardial Injury after Non-cardiac Surgery (MINS). Propranolol is known to stabilize hemodynamic variability by inhibiting sympathetic surge and reducing myocardial oxygen consumption. Recent studies also suggest that beta-blockers may influence the tumor microenvironment (TME) by reducing inflammation and regulating immune cell composition.This prospective, randomized, open-label, single-center pragmatic clinical trial will enroll 100 female patients (aged 20-70) with stage I-III breast cancer and comorbid hypertension or angina. Participants will be randomized 1:1 into two groups:

  1. Propranolol Group: Patients receive propranolol for at least 14 days before surgery.
  2. Non-Propranolol Group: Patients receive usual care without propranolol.The primary objective is to compare the incidence of MINS based on high-sensitivity Troponin T (hs-TnT) levels measured postoperatively. Exploratory objectives include analyzing markers of inflammation (CRP, LDH), tumor proliferation (Ki-67), and tumor-infiltrating lymphocytes (TILs) using blood and tissue samples naturally obtained during the clinical process. Long-term follow-up will be conducted for up to 5 years to evaluate recurrence and survival outcomes.

Study Type

Interventional

Enrollment (Estimated)

100

Phase

  • Phase 4

Contacts and Locations

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

Study Contact

Study Contact Backup

  • Name: Chang Ik Yoon, MD, Ph.D.
  • Phone Number: 82-10-8774-0103
  • Email: fayn@daum.net

Study Locations

    • Seoul
      • Seoul, Seoul, South Korea, 06591
        • Seoul St. Mary's Hospital, The Catholic University of Korea
        • Contact:
        • Contact:
          • Chang Ik Yoon, MD, Ph.D.
          • Phone Number: 82-10-8774-0103
          • Email: fayn@daum.net

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

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Female patients aged 20 to 70 years.
  2. Patients diagnosed with hypertension or angina who require medication.
  3. Patients diagnosed with unilateral, resectable primary breast cancer (ICD-10: C50), Stage I-III.
  4. ECOG performance status of 0-1.
  5. Patients scheduled to receive standard postoperative treatment (including adjuvant radiotherapy
  6. Patients who voluntarily decide to participate and sign the written informed consent form

Exclusion Criteria:

  1. Patients with distant metastases.
  2. Patients with active infectious diseases, autoimmune diseases (including specific rheumatic diseases), coagulation disorders, or cardiovascular diseases other than hypertension or angina pectoris.
  3. Patients with clinically significant hepatic, hematologic, or renal dysfunction, defined as any of the following:

    ① ANC <1,500/mm3

    • Platelets <100,000/mm3

      • Hb <9 g/dL

        • AST and ALT > 2.5 x upper limit of normal (ULN) ⑤ Alkaline phosphatase > 2.5 x ULN ⑥ Total bilirubin > 1 x ULN ⑦ Serum creatinine >1.5 x ULN or estimated creatinine clearance < 60 mL/min (as calculated using the method standard for the institution)
  4. Patients with moderate to severe asthma or chronic obstructive pulmonary disease (COPD).
  5. Patients who are pregnant or breastfeeding at the time of enrollment.
  6. Patients with a history of malignancy within the past 5 years.
  7. Patients for whom data collection is considered difficult at the discretion of the investigator.
  8. Patients who are unable to understand or complete study questionnaires.
  9. Patients who have received β-blockers within 30 days prior to screening.
  10. Patients with systolic blood pressure < 100 mmHg or heart rate < 55 beats per minute.

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: Prevention
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Propranolol Group
Participants with hypertension or angina undergoing breast cancer surgery will receive Propranolol (dosage based on clinical indication) for at least 14 days before surgery until the morning of the operation.
Propranolol (dosage based on clinical indication) for at least 14 days before surgery until the morning of the operation.
Active Comparator: Non-Propranolol Group (Usual Care)
Participants will receive standard clinical care for hypertension or angina without the use of Propranolol or other beta-blockers before surgery
Standard medical management (e.g., CCB, ACEi, ARB, or diuretics) at the physician's discretion, excluding beta-blockers.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Incidence of Myocardial Injury after Noncardiac Surgery (MINS)
Time Frame: From the day of surgery (Day 0) up to 30 days postoperatively

MINS is defined as an elevated high-sensitivity cardiac Troponin T (hs-TnT) level measured for clinical purposes after surgery that exceeds the 99th percentile upper reference limit.

Specifically, it is defined as:

  1. 0.02-0.065 ng/mL with an absolute change of more than 0.005ng/mL or
  2. any elevation ≥0.065 ng/mL or any absolute change more than 0.014 ng/mL
From the day of surgery (Day 0) up to 30 days postoperatively

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Perioperative Hemodynamic Stability: Systolic Blood Pressure Fluctuation
Time Frame: During surgery and in the recovery room (up to 2hours post-surgery)(Day 0)
Comparison of the fluctuation range of blood pressure during surgery and in the recovery room (up to 2hours post-surgery)
During surgery and in the recovery room (up to 2hours post-surgery)(Day 0)
Perioperative Hemodynamic Stability: Heart rate Fluctuation
Time Frame: During surgery and in the recovery room (up to 2hours post-surgery)(Day 0)
Comparison of the fluctuation range of Heart rate during surgery and in the recovery room (up to 2hours post-surgery)
During surgery and in the recovery room (up to 2hours post-surgery)(Day 0)
Postoperative Cardiovascular and Respiratory Complications Rate
Time Frame: Within 30 days after surgery
Incidence of major cardiovascular and respiratory complications, including MI, CVA, MINS, and pulmonary complications.
Within 30 days after surgery
length of hospital stay
Time Frame: Within 30 days after surgery
Total number of days from the date of surgery to the date of discharge.
Within 30 days after surgery
Change in Patient-Reported Anxiety (HADS-A)
Time Frame: Baseline (Screening), Just before surgery (Day 0), and 6 months after surgery
Evaluation of the change in anxiety levels using the Hospital Anxiety and Depression Scale-Anxiety (HADS-A) subscale. The score ranges from 0 to 21, with higher scores indicating higher anxiety.
Baseline (Screening), Just before surgery (Day 0), and 6 months after surgery

Other Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tumor Microenvironment and Biological Markers: Ki-67 Proliferation Index
Time Frame: At the time of surgery (Day 0)
The percentage of Ki-67 positive tumor cells measured by immunohistochemistry in surgical tissues.
At the time of surgery (Day 0)
Tumor Microenvironment and Biological Markers: Histological Grade
Time Frame: At the time of surgery (Day 0)
Assessment of tumor differentiation using the Modified Bloom-Richardson grade. The scale ranges from 3 to 9, where higher scores indicate a more aggressive tumor/worse outcome.
At the time of surgery (Day 0)
Tumor Microenvironment and Biological Markers: Presence of Lymphovascular Invasion
Time Frame: At the time of surgery (Day 0)
Pathological assessment of the presence or absence of tumor cells within lymphatic or vascular channels in the surgical specimen.
At the time of surgery (Day 0)
Tumor Microenvironment and Biological Markers: Tumor-Infiltrating Lymphocytes (TILs)
Time Frame: At the time of surgery (Day 0)
Percentage of stromal area occupied by mononuclear inflammatory cells in the surgical specimen.
At the time of surgery (Day 0)
Changes in Inflammatory Markers and Serum Tumor Markers: C-Reactive Protein (CRP)
Time Frame: Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Comparison of changes in C-reactive protein (CRP)
Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Changes in Inflammatory Markers and Serum Tumor Markers: lactate dehydrogenase (LDH)
Time Frame: Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Comparison of changes in lactate dehydrogenase (LDH)
Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Changes in Inflammatory Markers and Serum Tumor Markers: Carcinoembryonic Antigen (CEA)
Time Frame: Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Comparison of changes in serum tumor marker CEA
Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Changes in Inflammatory Markers and Serum Tumor Markers: Cancer Antigen 15-3 (CA 15-3)
Time Frame: Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Comparison of changes in serum tumor markers CA 15-3
Baseline (Screening), Day 0 (Surgery), and 6 months after surgery
Long-term Recurrence and Survival Outcomes
Time Frame: Up to 5 years after surgery
Descriptive analysis of recurrence status, invasive disease-free survival (iDFS), and overall survival (OS)
Up to 5 years after surgery
Molecular and Immunological Analysis
Time Frame: Up to 5 years (duration of sample storage and analysis)
Exploration of biological changes related to propranolol use through molecular analysis (e.g., RNA/DNA sequencing) using stored tissue and blood samples.
Up to 5 years (duration of sample storage and analysis)

Collaborators and Investigators

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

Sponsor

Investigators

  • Principal Investigator: Chang Ik Yoon, MD, Ph.D., Seoul St. Mary's Hospital, The Catholic University of Korea

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

Helpful Links

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 (Estimated)

May 26, 2026

Primary Completion (Estimated)

May 23, 2028

Study Completion (Estimated)

May 24, 2033

Study Registration Dates

First Submitted

April 27, 2026

First Submitted That Met QC Criteria

May 6, 2026

First Posted (Actual)

May 13, 2026

Study Record Updates

Last Update Posted (Actual)

May 15, 2026

Last Update Submitted That Met QC Criteria

May 12, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

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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