Positron Emission Tomography in Women With Advanced HER2-Positive Breast Cancer

November 10, 2025 updated by: City of Hope Medical Center

64 Cu-DOTA-Trastuzumab Positron Emission Tomography in Women With Advanced HER2 Positive Invasive Breast Cancer

RATIONALE: Diagnostic procedures, such as copper Cu 64-DOTA-trastuzumab-labeled PET, may help doctors to plan a better treatment

PURPOSE: This pilot trial is studying copper Cu 64-tetra-azacyclododecanetetra-acetic acid (DOTA)-trastuzumab-labeled positron emission tomography (PET) in women with human epidermal growth factor receptor 2 (HER2)-positive breast cancer.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

PRIMARY OBJECTIVES:

I. Determine the dose of pre-administered cold antibody that optimizes image quality of 64Cu-DOTA-trastuzumab PET without increasing the radiation dose to the heart in women with metastatic HER2 positive breast cancer.

II. Determine whether tumor uptake on 64Cu-DOTA-trastuzumab PET correlates with tumor expression of HER2 in women with metastatic disease.

III. Perform an exploratory analysis of the relationship between uptake on 64Cu-DOTA-trastuzumab PET, HER2 overexpression, and inactivation of the PI3K/Akt pathway.

OUTLINE:

This is a part one dose-determining study followed by a part two study. PART ONE: Patients are randomized to 1 of 3 dose levels. Patients undergo a PET scan 24-48 hours after injection of 64 Cu-DOTA-trastuzumab. PART TWO: Patients undergo a PET scan 24-48 hours after injection of 64 Cu-DOTA-trastuzumab at the optimal dose as determined in part one of the study.

Study Type

Interventional

Enrollment (Actual)

18

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
    • California
      • Duarte, California, United States, 91010
        • City of Hope

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

Eligibility Part I (Determination of the cold dose)

  • Participants must be women who have histological confirmation of metastatic invasive breast cancer that has metastasized outside the region of the primary tumor and axilla. Biopsy must be obtained within 28 days prior to study. Patients must have metastatic disease in lung, liver, soft-tissue or bone to qualify for the study (more than one site is permissible).
  • At least 1 non-hepatic site of metastasis greater than or equal to 2 cm in mean diameter must be identified in addition to the site that was biopsied.
  • The cancer must over express HER2 as determined by IHC and FISH.
  • Patients may have received trastuzumab in the adjuvant, neoadjuvant, or metastatic setting, but cannot have received the drug within the prior 2 months.
  • Participants must have normal cardiac ejection fraction.

Eligibility Part 2 (correlation of HER2 expression with PET uptake)

  • Participants must be women who have histological confirmation of metastatic invasive breast cancer that has metastasized outside the region of the primary tumor and axilla. Biopsy must be obtained within 28 days prior to study. Patients must have metastatic disease in lung, liver, soft-tissue or bone to qualify for the study (more than one site is permissible).
  • At least 1 non-hepatic site of metastasis site greater than or equal to 2 cm in mean diameter must be identified in addition to the site that was biopsied.
  • Participants with HER2 1+, 2+ and 3+ by IHC are eligible.
  • Patients may have received trastuzumab in the adjuvant, neoadjuvant, or metastatic setting, but cannot have received the drug within the prior 2 months.
  • Participants must have normal cardiac ejection fraction.

Ineligibility

  • Participants who have received trastuzumab within the prior 2 months
  • Participants who are not considered candidates for trastuzumab
  • Metastatic disease in a single site
  • No metastatic site greater than or equal to 2 cm
  • Concurrent malignancy other than skin cancer
  • Inability to provide informed consent
  • Participants who are pregnant

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: Arm I
PART ONE: Patients are randomized to 1 of 3 dose levels. Patients undergo a PET scan 24-48 hours after injection of copper Cu 64-DOTA-trastuzumab. PART TWO: Patients undergo a PET scan 24-48 hours after injection of copper Cu 64-DOTA-trastuzumab.
Other: laboratory biomarker analysis
Correlative studies
Procedure: positron emission tomography
PET images performed on a GE Discovery 16 Ste PET-CT scanner
Other Names:
  • PET
  • FDG-PET
  • PET scan
  • tomography, emission computed
Radiation: copper Cu 64-DOTA-trastuzumab
15 mCi of Cu 64-DOTA-trastuzumab, total trastuzumab dose less than 5 mg.
Other Names:
  • 64Cu-DOTA-trastuzumab
Procedure: Biopsy
Correlative Studies
Other Names:
  • biopsies
Other: Immunohistochemistry staining method
Correlative studies
Other Names:
  • immunohistochemistry
Genetic: mutation analysis
Correlative studies

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Tumor Uptake of 64Cu-DOTA-trastuzumab After 24 Hours
Time Frame: 24 hours after injection of 64 CU-DOTA-trastuzumab

Comparison of uptake between the HER2+ and HER2- groups, treating SUVmax measurements for individual tumors as independent observations. Statistical significance of differences in SUVmax between patient groups was assessed via a nonparametric (Wilcoxon rank-sum) test.

Radiolabel uptake for tumors was measured in terms of single-voxel maximum SUV (SUVmax; SUV = tissue activity per mL x body weight [g]/injected activity decay-corrected to time of scan).
24 hours after injection of 64 CU-DOTA-trastuzumab
Tumor Uptake of 64Cu-DOTA-trastuzumab After 48 Hours
Time Frame: 48 hours after injection of 64 CU-DOTA-trastuzumab

Comparison of uptake between the HER2+ and HER2- groups, treating SUVmax measurements for individual tumors as independent observations. Statistical significance of differences in SUVmax between patient groups was assessed via a nonparametric (Wilcoxon rank-sum) test.

Radiolabel uptake for tumors was measured in terms of single-voxel maximum SUV (SUVmax; SUV = tissue activity per mL x body weight [g]/injected activity decay-corrected to time of scan).
48 hours after injection of 64 CU-DOTA-trastuzumab

Collaborators and Investigators

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

Sponsor

City of Hope Medical Center

Investigators

  • Principal Investigator: Joanne Mortimer, City of Hope Medical Center

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 16, 2011

Primary Completion (Actual)

October 23, 2018

Study Completion (Estimated)

September 8, 2026

Study Registration Dates

First Submitted

March 23, 2010

First Submitted That Met QC Criteria

March 25, 2010

First Posted (Estimated)

March 26, 2010

Study Record Updates

Last Update Posted (Estimated)

November 14, 2025

Last Update Submitted That Met QC Criteria

November 10, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 09101
  • NCI-2010-00322 (Registry Identifier: NCI CTRP)
  • BC095002 (Other Grant/Funding Number: Department of Defense)

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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