18F-Floretyrosine Expanded Access Program

May 26, 2026 updated by: Telix Pharmaceuticals (Innovations) Pty Limited

An Expanded Access Program for the Non-invasive Characterization of Glioma or Treatment Related Change Utilizing Fluorine (F-18) Floretyrosine (18F-FET, TLX101-CDx)

The aim of this Expanded Access Program (EAP) is to enable the use of 18F-Floretyrosine with positron emission tomography/computed tomography (PET/CT) or positron emission tomography/magnetic resonance (PET/MR) imaging to noninvasively detect tumor burden or treatment related change to assist in optimal management of patients with glioma.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
No longer available

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.

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.
Expanded Access

Expanded Access Type

Expanded Access Type

Describes the category of expanded access under U.S. Food and Drug Administration (FDA) regulations. There are three types of expanded access:
  • Individual Patients: Allows a single patient, with a serious disease or condition who cannot participate in a clinical trial, access to a drug or biological product that has not been approved by the FDA. This category also includes access in an emergency situation.
  • Intermediate-size Population: Allows more than one patient (but generally fewer patients than through a Treatment IND/Protocol) access to a drug or biological product that has not been approved by the FDA. This type of expanded access is used when multiple patients with the same disease or condition seek access to a specific drug or biological product that has not been approved by the FDA.
  • Treatment IND/Protocol: Allows a large, widespread population access to a drug or biological product that has not been approved by the FDA. This type of expanded access can only be provided if the product is already being developed for marketing for the same use as the expanded access use.
  • Treatment IND/Protocol

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
    • California
      • Orange, California, United States, 92868
        • UC Irvine
    • Colorado
      • Aurora, Colorado, United States, 80045
        • CU Anschutz / University of Colorado
    • Illinois
      • Chicago, Illinois, United States, 60611
        • Northwestern University
    • Maryland
      • Baltimore, Maryland, United States, 21205
        • Johns Hopkins Baltimore
    • Massachusetts
      • Boston, Massachusetts, United States, 02215
        • Dana Farber Cancer Institute
    • New York
      • New York, New York, United States, 10065
        • MSKCC (Memorial Sloan Kettering Cancer Center)
    • Ohio
      • Kettering, Ohio, United States, 45429
        • Kettering Health Main Campus
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19107
        • Thomas Jefferson University
      • Philadelphia, Pennsylvania, United States, 19104
        • University Pennsylvania
    • Wisconsin
      • Madison, Wisconsin, United States, 53705-2275
        • University Wisconsin Madison

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

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

N/A

Description

Inclusion Criteria:

  1. Written and voluntarily given informed consent. Pediatric patients (<18 years of age) will provide assent along with parental/legal guardian /caregiver consent according to IRB requirements.
  2. Male or female ≥ 3 years of age at time of consent/assent
  3. Diagnosis or clinical suspicion of glioma (any grade) in the brain
  4. At the time of screening have undergone therapy for glioma
  5. Indeterminate MR findings for disease recurrence or progression versus treatment related changes (pseudoprogression or pseudoresponse) requiring further diagnostic procedures within 60 days prior to the 18F-Floretyrosine PET imaging
  6. Willing and able to lie still for at least 40 minutes in an enclosed space for the imaging procedure, or if medically necessary, able to tolerate standard institutions procedures for sedation and/or anesthesia.

Exclusion Criteria:

  1. Participant cannot be safely scanned due to devices, implants, foreign and/or metallic objects in or on the body that are not MR compatible, unless a clinical judgement is made that the participant's diagnostic needs can instead be met by diversion to 18F-Floretyrosine imaging by PET/CT (making the magnetic field compatibility an irrelevant safety concern).
  2. Women who are pregnant or breastfeeding.
  3. Women of childbearing potential who are unwilling or unable to use an acceptable method of contraception to avoid pregnancy for the duration of the program (Day 0 to Day 2).
  4. Serious non-malignant disease (e.g., psychiatric, infectious, autoimmune, or metabolic), that may interfere with the objectives of the program or with the safety or compliance of the participant, as judged by the Investigator.
  5. Mental impairment that may compromise the ability to give informed consent/assent and comply with the requirements of the program as judged by the Investigator.
  6. Exposure to any experimental diagnostic or therapeutic drug within 30 days from the date planned administration of 18F-Floretyrosine.
  7. Known hypersensitivity to floretyrosine or tyrosine derivatives.
  8. Unable to tolerate the program procedures.

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?

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.
Telix Pharmaceuticals (Innovations) Pty Limited

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 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).
December 16, 2024

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.
December 16, 2024

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.
December 19, 2024

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 29, 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 26, 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

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.
  • 18F-TLX101-CDX-002

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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