68Ga PSMA PET Imaging for the Treatment of Advanced Liver Cancer

February 3, 2026 updated by: Mayo Clinic

Optimizing Outcomes of Patients With Advanced HCC Undergoing Immunotherapy Through Novel 68Ga PSMA PET Imaging

This phase II trial tests whether 68-Gallium prostate specific membrane antigen (68Ga-PSMA) positron emission tomography (PET) imaging can improve the diagnosis and management of liver cancer that has spread to other parts of the body (advanced). PSMA is a protein that appears in large amounts on the surface of liver cancer cells. The radioactive chemical compound (68Ga-PSMA) has been designed to circulate through the body and attach itself to the PSMA protein on liver cancer cells. A PET scan is then used to detect the location of the tumor cells. 68Ga-PSMA PET may improve upon the diagnosis and management of liver cancer.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

PRIMARY OBJECTIVES:

I. To test the performance of novel biomarkers derived from PSMA PET/computed tomography (CT) to measure response compared to Response Evaluation Criteria in Solid Tumors (RECIST) criteria, in advanced hepatocellular carcinoma (HCC) patients treated with immunotherapy.

II. To identify precision imaging biomarkers that can predict response of HCC to novel immunotherapy.

OUTLINE:

Patients undergo 68GA PSMA PET/CT scans at baseline, and after 3, 6, 9, and 12 cycles of standard of care immunotherapy in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed-up every 6 months for 3 years.

Study Type

Interventional

Enrollment (Actual)

29

Phase

  • Phase 2

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
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic in Rochester

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:

  • Patient with pathologically confirmed HCC not amenable to curative resection, transplantation or ablative therapies
  • Have radiographically measurable disease by RECIST
  • Eligible for atezolizumab/bevacizumab front line therapy
  • Male or female with age greater than 18 years, with the capacity and willingness to provide written informed consent

Exclusion Criteria:

  • Pregnant and/or breast-feeding patients. A negative pregnancy test within 48 hours of the PET scan
  • Patients with higher than the weight/size limitations of PET/CT scanner

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

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Treatment (68GA PSMA PET/CT)
Patients undergo 68GA PSMA PET/CT scans at baseline, and after 3, 6, 9, and 12 cycles of standard of care immunotherapy in the absence of disease progression or unacceptable toxicity.
Procedure: Computed Tomography
Undergo 68Ga PSMA PET/CT
Other Names:
  • CT
  • CAT
  • CAT Scan
  • Computed Axial Tomography
  • Computerized Axial Tomography
  • Computerized Tomography
  • CT Scan
  • tomography
Procedure: Positron Emission Tomography
Undergo 68Ga PSMA PET/CT
Other Names:
  • Medical Imaging, Positron Emission Tomography
  • PET
  • PET Scan
  • Positron Emission Tomography Scan
  • Positron-Emission Tomography
  • proton magnetic resonance spectroscopic imaging
  • PT
Drug: Gallium Ga 68 Gozetotide
Undergo 68Ga PSMA PET/CT
Other Names:
  • (68)Ga labeled Glu-NH-CO-NH-Lys(Ahx)-HBED-CC
  • (68)Ga-labeled Glu-urea-Lys(Ahx)-HBED-CC
  • (68)Ga-PSMA Ligand Glu-urea-Lys(Ahx)-HBED-CC
  • (68)Gallium-PSMA Ligand Glu-urea-Lys(Ahx)-HBED-CC
  • (68Ga)Glu-urea-Lys(Ahx)-HBED-CC
  • 68Ga-DKFZ-PSMA-11
  • 68Ga-HBED-CC-PSMA
  • 68Ga-labeled Glu-NH-CO-NH-Lys(Ahx)-HBED-CC
  • 68Ga-PSMA
  • 68Ga-PSMA-11
  • 68Ga-PSMA-HBED-CC
  • [68Ga] Prostate-specific Membrane Antigen 11
  • [68Ga]GaPSMA-11
  • Ga PSMA
  • Ga-68 labeled DKFZ-PSMA-11
  • Ga-68 labeled PSMA-11
  • GA-68 PSMA-11
  • Gallium Ga 68 PSMA-11
  • Gallium Ga 68-labeled PSMA-11
  • GALLIUM GA-68 GOZETOTIDE
  • Gallium-68 PSMA
  • Gallium-68 PSMA Ligand Glu-urea-Lys(Ahx)-HBED-CC
  • GaPSMA
  • PSMA-HBED-CC GA-68

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Time to treatment response
Time Frame: Up to 12 cycles of treatment or 36 weeks
Defined as the time from study registration to complete response/partial response per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 and per PSMA positron emission tomography (PET)/computed tomography (CT).
Up to 12 cycles of treatment or 36 weeks
Progression free survival (PFS) at 6 months
Time Frame: At 6 months
Defined as the length of time during and after treatment that a patient lives with cancer without the disease worsening, per RECIST and PSMA PET/CT
At 6 months
Time to progression
Time Frame: Up to 3 years
Defined as the time from study registration to disease progression per RECIST 1.1 and PSMA PET/CT.
Up to 3 years

Collaborators and Investigators

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

Sponsor

Mayo Clinic

Investigators

  • Principal Investigator: Nguyen H. Tran, MD, Mayo Clinic in Rochester

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)

January 30, 2022

Primary Completion (Actual)

December 31, 2025

Study Completion (Actual)

December 31, 2025

Study Registration Dates

First Submitted

November 22, 2021

First Submitted That Met QC Criteria

January 3, 2022

First Posted (Actual)

January 4, 2022

Study Record Updates

Last Update Posted (Actual)

February 5, 2026

Last Update Submitted That Met QC Criteria

February 3, 2026

Last Verified

February 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 21-007799
  • NCI-2021-12377 (Registry Identifier: CTRP (Clinical Trial Reporting Program))

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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