Pilot Study of [68Ga]Ga-ABY-025 Imaging in Patients Undergoing Treatment With HER2-targeted Therapy

May 6, 2026 updated by: Eben Rosenthal, Vanderbilt-Ingram Cancer Center
The purpose of this study is to determine if the radiotracer, [68Ga]Ga-ABY-025, used for PET imaging can help us better identify and visualize lesions or tumors, in patients who are receiving standard of care therapy HER2+ cancers.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study will assess a dose of ABY-025 followed by a tracer dose of [68Ga]Ga-ABY-025 in subjects with HER2+ solid cancers, or HER2+ or low breast cancer undergoing or planning to undergo treatment with standard-of-care HER2-targeted therapy for an FDA-approved indication. The study drug will be administered and [68Ga]Ga-ABY-025 PET/CT scan will be obtained the same day after injection of study drug. Patients will have a follow visit 2-7 days post injection of the study drug. Additionally, subjects will undergo standard of care evaluation of their advanced disease per the discretion of their treating physician.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Early Phase 1

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

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Tennessee
      • Nashville, Tennessee, United States, 37232
        • Recruiting
        • Vanderbilt University Medical Center
        • Contact:

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Age ≥ 18 years.
  2. Patients with unresectable locally advanced or metastatic cancer who are eligible for standard of care treatment with HER2-targeted therapy per the discretion of their treating physician for an FDA-approved indication. Patients who are planning to start HER2-targeted therapy at the time of study enrollment. Patients who have recently begun HER2 treatment and have received no more than 6 cycles will be eligible for enrollment.
  3. Must have a previous biopsy demonstrating HER2 expression in at least one lesion (HER2+ solid cancer, or breast cancer patients who are HER2+ or HER2-low) as defined by IHC and FISH studies or with HER2 amplification as defined by a liquid biopsy that was done as standard of care testing for the patient's cancer type.
  4. Measurable disease on CT, FDG-PET, or MRI imaging for RECIST evaluation; patient must have measurable disease outside the liver.
  5. Life expectancy of at least 6 months. Patients with brain metastases are permitted to enroll in this study.

Exclusion Criteria:

  1. Measurable sites of disease only in the liver.
  2. Inability to comply with study procedures.
  3. Hypersensitivity or allergy to any component of [68Ga]Ga-ABY-025.
  4. Pregnant or breastfeeding.
  5. HER2-negative cancers that have no FDA approved indication for treatment with HER2-directed therapy.
  6. Inability to lie flat for 30 minutes during an imaging session.
  7. Medical or psychiatric co-morbidities that, in the opinion of the treating physician, would prevent the patient from successfully participating in the study.

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

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Study Arm (ABY-025)
This is a pilot study of [68Ga]Ga-ABY-025, a radiolabeled affibody, imaging in patients undergoing treatment with HER2-targeted therapy. The PET/CT imaging ("HER2 PET" imaging) will be performed at, prior to, or during the time a patient is receiving treatment with HER2-targeted therapy. A second HER2 PET will be collected at time of therapy treatment discontinuation or 12 months from study consent. Patients will be infused with the study drug, [68Ga]Ga-ABY-025, followed by PET/CT imaging post infusion. Participants will undergo follow-up visits to assess for adverse reactions 2-7 days post infusion and again at the patient's standard of care visit. Participants will undergo standard of care work-up for their malignancy as determined by their treatment team (e.g. biopsy, additional imaging, observation, treatment for metastatic disease). Either at 12 months after enrollment in the study or at the time of treatment discontinuation (whichever comes first), repeat HER2 PET imaging will
Drug: [68Ga]Ga-ABY-025
Subjects receive a tracer dose of [68Ga]Ga-ABY-025 and will receive a PET/CT scan a few hours after the injection.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Determine safety of [68Ga]Ga-ABY-025 PET by assessing for adverse events following the injection and PET imaging.
Time Frame: up to 21± 14 days from second administration of [68Ga]Ga-ABY-025. Assessments will be performed as part of the routine standard of care for patients undergoing HER2-targeted anti-cancer treatment.
Outcome Measure: After study enrollment, subjects will receive [68Ga]Ga-ABY-025 infusion and undergo PET/CT scan. Patients will be immediately assessed for adverse events within the first 30 minutes of infusion and 2-7 days post-infusion from the study coordinator. Adverse events will be monitored up to 21±14 days following the infusion of study drug. Repeat infusion and imaging will be obtained either at the time of treatment discontinuation or at 12 months from study consent and will have the same safety monitoring parameters. While there are expected adverse events related to anti-cancer therapy, we will specifically be reporting adverse events that are "definitely related" or "probably related" to the study agent.
up to 21± 14 days from second administration of [68Ga]Ga-ABY-025. Assessments will be performed as part of the routine standard of care for patients undergoing HER2-targeted anti-cancer treatment.

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Vanderbilt-Ingram Cancer 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)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 16, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
January 29, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 10, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 14, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 8, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • VICCBREP24601

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

IPD Plan Description

It is unknown if and/or how we will plan IPD with outside researchers.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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