Clinical Benefit of 18F-FET in Glioma.

July 7, 2026 updated by: Primo Biotechnology Co., Ltd

The Clinical Benefit of 18F-Fluoroethyl-l-tyrosine(FET) PET/CT in Glioma Patients.

This Phase II clinical trial, sponsored by **Primo Biotechnology Co., Ltd.**, evaluates the clinical benefit of **$^{18}$F-FET PET/CT** in diagnosing glioma. The study aims to compare the diagnostic performance of $^{18}$F-FET PET imaging against traditional brain MRI, using surgical histopathology as the gold standard for verification.

**Study Design and Participants** This is a single-center, open-label, non-randomized trial conducted in Taiwan. The study will enroll a total of **36 participants**, consisting of 6 healthy volunteers (to assess biodistribution and dosimetry) and 30 patients with suspected primary gliomas scheduled for surgery.

**Methodology** The test drug, $^{18}$F-FET, is a radiopharmaceutical that targets large neutral amino acid transporters (LAT). It is administered via intravenous injection at a dosage of 3MBq/kgw.

  • **Volunteers** undergo PET/CT scans immediately and every 20 minutes for 90 minutes.
  • **Patients** receive a static PET scan 40-50 minutes post-injection.

**Endpoints and Safety**

  • **Primary Endpoint:** Diagnostic sensitivity compared to MRI.
  • **Secondary Endpoints:** Specificity, PPV, NPV, tumor-to-background ratios (TBR), and safety (adverse events/vital signs).
  • **Radiation Safety:** The total estimated radiation exposure is **7.63 mSv**, which is well below the international safety threshold of 100 mSv.

**Conclusion** The trial seeks to establish $^{18}$F-FET PET/CT as a safe and effective diagnostic tool for the pre-surgical assessment of gliomas, potentially providing higher sensitivity and more accurate lesion detection than conventional MRI in Asian cancer patients.

Study Overview

Status

Not yet recruiting

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Estimated)

36

Phase

  • Phase 3

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

  • Taiwan
      • Kaohsiung City, Taiwan, 833401
        • Kaohsiung Chang Gung Memorial Hospital
        • Contact:
        • Contact:
        • Sub-Investigator:
          • Ming-Jung Chuang
    • Fuxing St., Guishan Dist.
      • Taoyuan City, Fuxing St., Guishan Dist., Taiwan, 333423
        • Linkou Chang Gung Memorial Hospital
        • Principal Investigator:
          • Kuo-Chen Wei
        • Contact:
        • Contact:
    • Maijin Rd., Anle Dist.
      • Keelung, Maijin Rd., Anle Dist., Taiwan, 204
        • Keelung Chang Gung Memorial Hospital
        • Contact:
        • Contact:
    • Puzi City
      • Chiayi City, Puzi City, Taiwan, 613016
        • Chiayi Chang Gung Memorial Hospital
        • Contact:
        • Sub-Investigator:
          • Chien-Chin Hsu

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

Yes

Description

  • Inclusion criteria： For health volunteers

    1. Participants must be ≥ 20 years old.
    2. Participants are alert and oriented, and able to independently sign ICF. For glioma patients
    1. Participants must be ≥ 20 years old.
    2. Participants with suspected primary gliomas scheduled for surgery.
    3. Participants are alert and oriented, and able to independently sign ICF.

  • Exclusion criteria：

    1. Liver dysfunction within the past 6 months (e.g., AST/ALT ratio > 2, total bilirubin > 1.5 mg/dL).
    2. Chronic kidney disease stage 4 (eGFR < 30 mL/min/1.73 m2) within the last 6 months.
    3. Acute kidney injury within the past 6 months.
    4. Allergic to any radiopharmaceuticals or contrast agents.
    5. Restlessness or inability to lie in a cast for 30 to 60 minutes.
    6. Women who are pregnant, lactating, or planning pregnancy during the study period or before screening.
    7. PI deemed the participant unsuitable.
    8. The patient is not able to understand the treatment options.

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: 18F-FET PET imaging
Diagnostic test: 18F-Fluoroethyl-l-tyrosine
18F-FET PET imaging

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Accuracy Rate
Time Frame: 12 months
12 months

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Positive detection Rate
Time Frame: 12months
12months
AE incidence rate
Time Frame: 7 weeks
Safety
7 weeks
SUVmean in major normal organ
Time Frame: 1 day
Biodistribution
1 day

Collaborators and Investigators

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

Sponsor

Primo Biotechnology Co., Ltd

Collaborators

Chang Gung Memorial Hospital

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 (Estimated)

October 1, 2026

Primary Completion (Estimated)

November 30, 2027

Study Completion (Estimated)

January 31, 2028

Study Registration Dates

First Submitted

July 1, 2026

First Submitted That Met QC Criteria

July 7, 2026

First Posted (Actual)

July 13, 2026

Study Record Updates

Last Update Posted (Actual)

July 13, 2026

Last Update Submitted That Met QC Criteria

July 7, 2026

Last Verified

July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • CBFETglio

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

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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