A Clinical Study of [68Ga]Ga-ELI421 Injection PET Imaging in Patients With Prostate Cancer

July 1, 2026 updated by: Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

A Clinical Study on the Safety and Tolerability, Biodistribution, Radiation Dosimetry, and Diagnostic Efficacy of [68Ga]Ga-ELI421 Injection PET Imaging in Patients With Prostate Cancer

Primary Objective:

To evaluate the safety and tolerability of PET imaging following a single intravenous infusion of [⁶⁸Ga]Ga-ELI421 injection in patients with prostate cancer.

Secondary Objectives:

To evaluate the biodistribution characteristics of [⁶⁸Ga]Ga-ELI421 injection; To evaluate the radiation dosimetry characteristics of [⁶⁸Ga]Ga-ELI421 injection; To evaluate the diagnostic efficacy of PET imaging with [⁶⁸Ga]Ga-ELI421 injection.

Study Overview

Status

Recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

50

Phase

  • Phase 2
  • 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 Locations

  • China
    • Hubei
      • Wuhan, Hubei, China, 430000
        • Recruiting
        • Union Hospital, Tongji Medical College, Huazhong University of Science and Technology
        • 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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Has been fully informed about the study and voluntarily provided written informed consent prior to initiation of any study-related procedures;
  2. Aged ≥ 18 years;
  3. In generally good condition with an Eastern Cooperative Oncology Group (ECOG) performance status score of 0-1;
  4. Patients with histopathologically and/or cytologically confirmed prostate cancer;
  5. Has an indication for PSMA PET imaging;
  6. No clinically significant abnormal findings on physical examination, vital signs, laboratory tests, 12-lead ECG, or other examinations that may compromise subject safety or imaging results.
  7. Subjects of reproductive potential agree to refrain from pregnancy, sperm donation, and voluntarily use highly effective contraceptive methods (including by their partner) for 6 months after study drug administration, such as condoms, oral or injectable contraceptives, intrauterine devices (IUDs), etc.

Exclusion Criteria:

  1. Presence of comorbidities that may compromise subject safety or interfere with imaging results;
  2. Concomitant medications that may compromise subject safety or interfere with imaging results;
  3. Insufficient washout period following prior anti-tumor therapies (including cytotoxic chemotherapy, immunotherapy, radiotherapy, etc.), which may compromise subject safety or interfere with imaging results;
  4. Known hypersensitivity to ionizing radiation or alcohol, or hypersensitivity to [⁶⁸Ga]Ga-ELI421 injection or its excipients, or other history of severe allergic reactions;
  5. Inability to complete PET imaging as required;
  6. Any other conditions deemed inappropriate by the investigator for participation in this 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: Diagnostic
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Single Arm with Dual PET Imaging: ELI421 and PSMA PET for Prostate Cancer
Drug: [68Ga]Ga-ELI421 injection
Administration Protocol: A single rapid intravenous bolus injection of [68Ga]Ga-ELI421 injection at a radioactivity dose of about 185 MBq (5 mCi), followed by catheter flushing with approximately 10 mL of 0.9% sterile normal saline. Static scanning and/or dynamic scanning Whole-body PET Imaging will be performed. PSMA PET imaging will be performed in accordance with routine clinical practice.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Adverse Event (AE)
Time Frame: Day1, Day2-3
Any abnormality, medication, or treatment after dosing shall be documented as an adverse event and concomitant medication / non-pharmacological treatment. All adverse events shall be followed up until resolution, stabilization or remission of symptoms, or until abnormal laboratory values return to normal, baseline or a stable state, or until a reasonable explanation is obtained (e.g., loss to follow-up, death).
Day1, Day2-3

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Lesion uptake value
Time Frame: Day1
ROIs shall be delineated to calculate the percentage injected dose (%ID), mean standardized uptake value (SUVmean), and retention time of target organs/tissues at various scanning time points.
Day1
Absorbed dose
Time Frame: Day1
Absorbed dose of target organs/tissues and total-body effective dose.
Day1
Diagnostic performance
Time Frame: Day1
Diagnostic performance of [⁶⁸Ga]Ga-ELI421 for lesion detection compared with PSMA PET, including the number of lesions and diagnostic performance indicators such as accuracy, sensitivity, and specificity.
Day1

Collaborators and Investigators

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

Sponsor

Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Collaborators

Eli Radiopharma

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 8, 2026

Primary Completion (Estimated)

December 30, 2026

Study Completion (Estimated)

December 30, 2026

Study Registration Dates

First Submitted

July 1, 2026

First Submitted That Met QC Criteria

July 1, 2026

First Posted (Actual)

July 8, 2026

Study Record Updates

Last Update Posted (Actual)

July 8, 2026

Last Update Submitted That Met QC Criteria

July 1, 2026

Last Verified

June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Xlan-20260318

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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