Tc99m Sestamibi Molecular Breast Imaging

March 5, 2026 updated by: M.D. Anderson Cancer Center

Assessment of the Tumor Response to Neoadjuvant Chemotherapy in Women With Locoregional Invasive Breast Cancer Using Tc99m Sestamibi Molecular Breast Imaging: A Prospective Study

This clinical trial studies technetium Tc-99m sestamibi molecular breast imaging in predicting tumor response in patients with locoregional breast cancer that has spread from where it began in the breast to surrounding normal tissue who are receiving neoadjuvant chemotherapy. Comparing results of diagnostic procedures, such as technetium Tc-99m sestamibi molecular breast imaging, done before, during, and after chemotherapy may help doctors predict a patient's response to treatment and help plan the best treatment.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

PRIMARY OBJECTIVE:

I. To evaluate the ability of technetium Tc-99m sestamibi (Tc 99m sestamibi) molecular breast imaging (MBI) to predict early response to neoadjuvant chemotherapy (NAC) and to assess residual disease at the completion of NAC in patients with locoregional invasive breast cancer.

SECONDARY OBJECTIVES:

I. To evaluate and qualitatively characterize Tc 99m sestamibi uptake by tumor on MBI at the baseline, after 2 cycles of NAC and at the completion of NAC.

II. To compare assessment of tumor response to NAC by MBI with digital mammography (DM), and breast ultrasound (US) exams.

III. To compare tumor size and distribution observed from MBI at the completion of NAC with extent of residual disease at surgery by pathological evaluation.

IV. To develop image acquisition and processing algorithm that quantifies the Tc 99m tumor uptake.

EXPLORATORY OBJECTIVE:

I. To determine effect of molecular subtype of cancer (Her2+, ER/PR/Her2- and ER+/Her2-) on diagnostic performance of MBI in predicting treatment response.

OUTLINE:

Patients undergo technetium Tc-99m sestamibi molecular breast imaging over 45 minutes at baseline (before start of NAC), after 2 courses of NAC (6-12 weeks, depending on the regimen), and the completion of NAC but before surgery. Patients also undergo breast ultrasound and mammographic imaging as standard of care at the same time points.

Study Type

Interventional

Enrollment (Actual)

96

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

  • United States
    • Texas
      • Houston, Texas, United States, 77030
        • University of Texas MD Anderson Cancer Center

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Female of 18 years and older of any race
  2. Has biopsy-proven invasive breast cancer (BI-RADS 6) and scheduled for neoadjuvant chemotherapy (NAC).
  3. Newly diagnosed biopsy proven locoregional invasive breast cancer at MD Anderson Cancer Center, or referred to MD Anderson for treatment after initial radiologic (mammographic, sonographic, etc.) exams at an outside institution in whom NAC is planned.
  4. Patients with stage T1 or greater (T1-T4), nodal involvement (N0 - N3), without metastasis (M0) invasive breast cancer, including patients with inflammatory breast cancer.
  5. Patients who agree to sign an informed consent to undergo MBI

Exclusion Criteria:

  1. Is under 18 years of age
  2. Is pregnant (confirmed by the patient as Imaging Clinic standard of care) or nursing mother
  3. Has lesions involving chest wall
  4. Has known allergy to Tc99m sestamibi

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: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Molecular Breast Imaging (MBI) + Tc99m sestamibi
Participants undergo 3 MBI scans with injections of injection of Tc99m sestamibi before each scan. First scan is 7 days before scheduled chemotherapy treatment, after 2 cycles of chemotherapy, and after completion of chemotherapy treatment.
Procedure: Molecular Breast Imaging (MBI)
Participants undergo 3 MBI scans with injections of injection of Tc99m sestamibi before each scan. First scan is 7 days before scheduled neoadjuvant chemotherapy (NAC) treatment, after 2 cycles of chemotherapy, and after completion of chemotherapy treatment.
Other Names:
  • MBI
Drug: Tc99m sestamibi
8 mCi of 99mTc sestamibi by vein before each molecular breast imaging (MBI).

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Detection of Treatment Response using Molecular Breast Imaging (MBI) plus Tc99m sestamibi
Time Frame: 24 weeks
Evaluation of treatment response by molecular breast imaging (MBI) tumor to background ratio (T/B), defined as T/B = ROIt_max/ROIb_mean, calculated.
24 weeks

Collaborators and Investigators

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

Sponsor

M.D. Anderson Cancer Center

Investigators

  • Principal Investigator: Gaiane M. Rauch, MD, PHD, M.D. Anderson Cancer Center

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 (Actual)

June 15, 2015

Primary Completion (Estimated)

March 31, 2028

Study Completion (Estimated)

March 31, 2028

Study Registration Dates

First Submitted

December 11, 2014

First Submitted That Met QC Criteria

December 18, 2014

First Posted (Estimated)

December 24, 2014

Study Record Updates

Last Update Posted (Actual)

March 9, 2026

Last Update Submitted That Met QC Criteria

March 5, 2026

Last Verified

March 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2014-0812
  • NCI-2015-00035 (Registry Identifier: NCI CTRP)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

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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