Novel Targeted Radiotherapy in Pediatric Patients With Inoperable Relapsed or Refractory HGG

Running, not enrolling · Phase 1

Conditions studied: High-Grade Glioma

In brief

The purpose of this dose finding study is to evaluate the safety and efficacy of 2 different dose levels of CLR 131 in children, adolescents and young adults with relapsed or refractory high-grade glioma (HGG).

Key facts

Study ID

NCT05610891

Run by

Cellectar Biosciences, Inc.

People needed

50

Starts

2023-10-01

Expected to finish

2026-09-01

Last updated by the study team

2026-03-18

Who can join

Age: 10 and older, up to 25. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Previously confirmed (histologically or cytologically) high grade glioma that is clinically or radiographically suspected to be relapsed, refractory, or recurrent
• ≥ 10 years of age and ≤ 25 years of age at time of consent/assent
• If ≥ age 16 years, Karnofsky performance status of ≥ 60. If < age 16 years, Lansky performance status ≥ 60
• Platelets ≥ 75,000/μL (last transfusion, if any, must be at least 1 week prior to study registration, and, unless deemed medically necessary, no transfusions are allowed between registration and dosing)
• Absolute neutrophil count ≥ 750/μL
• Hemoglobin ≥ 8 g/dL (last transfusion must be at least 1 week prior to study registration, and, unless deemed medically necessary, no transfusions are allowed between registration and dosing)
• Using the bedside Schwartz formula, estimated GFR (creatinine clearance) > 60 ml/min/1.73m2
• Alanine aminotransferase < 3 × ULN
• Bilirubin < 2 × ULN
• At least 1 measurable intracranial lesion with longest diameter of at least 10 mm on any imaging sequence.
• Patients with previously known neurological deficits must be clinically stable at time of enrollment and able to complete all study related procedures. Patients with documented or newly diagnosed neurological deficits will be enrolled at the investigator's discretion.
• If patient receives steroids for neurological symptom control, the dose must be stable (unchanged for three weeks prior to registration) or on a steroid tapering regimen. Initiation of steroids per routine care immediately prior to CLR 131 dosing is acceptable
• Patient or his or her legal representative is judged by the Investigator to have the initiative and means to be compliant with the protocol.
• Patient or his or her legal representative has the ability to read, understand, and provide written informed consent for the initiation of any study-related procedures.
• Female patients of childbearing potential must have a negative pregnancy test at screening and within 24 hours of dosing. It is recommended that female caregivers of childbearing potential have a negative pregnancy test within one week of dosing.
• Patients of childbearing potential must practice an effective method of birth control while participating on this study to avoid possible harm to the fetus.

You may not qualify if…

• Antitumor therapy or investigational therapy, within 3-half-lives of the agent preceding the present study. For certain types of radiation (craniospinal, total abdominal, whole lung [spot irradiation to skull-based metastases is not considered craniospinal radiation for the purposes of this study]), at least 3 months must have elapsed. Palliative focal radiation to non-target lesions should be completed at least 2 weeks prior to dosing. Patients participating in non-interventional clinical trials (i.e., non-drug) are allowed to participate in this trial
• History of hypersensitivity to thyroid protection medication (e.g., potassium iodide, Lugol's solution, etc.)
• Any other concomitant serious illness or organ system dysfunction (including cardiac and pulmonary dysfunction) that in the opinion of the Investigator would either compromise patient safety or interfere with the evaluation of the safety of the test drug.
• Major surgery within 6 weeks of enrollment unless delay in therapy poses unacceptable risk to the patient due to clinical progression (enrollment o such patients should be discussed with Medical Monitor)
• Known history of human immunodeficiency virus or uncontrolled, serious, active infection
• Pregnancy or breast-feeding

Where it is running

• Stanford University — Palo Alto, California, United States
• Memorial Sloan Kettering Cancer Center — New York, New York, United States
• Cincinnati Children's Hospital Medical Center — Cincinnati, Ohio, United States
• Children's Hospital of Philadelphia — Philadelphia, Pennsylvania, United States
• UT Southwestern Medical Center — Dallas, Texas, United States
• Texas Children's Cancer Center, Baylor College of Medicine — Houston, Texas, United States
• University of Wisconsin, Carbone Cancer Center — Madison, Wisconsin, United States
• Hospital for Sick Children — Toronto, Ontario, Canada

Full record on ClinicalTrials.gov

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