Status:

RECRUITING

A Study of 177Lu-PSMA-617 in People With Gliomas

Lead Sponsor:

Memorial Sloan Kettering Cancer Center

Collaborating Sponsors:

Novartis Pharmaceuticals

Conditions:

Glioma

Diffuse Astrocytoma, IDH-Wildtype (Grade 2-4)

Eligibility:

All Genders

18+ years

Phase:

PHASE1

Brief Summary

The researchers are doing this study to find out whether the radiopharmaceutical therapy (RPT) 177Lu-PSMA-617 is a safe treatment for people with IDH wild type glioma.

Eligibility Criteria

Inclusion

  • Confirmed histologic diagnosis of a WHO grade 2-4 glioma that is IDH1 R132H-wildtype, including the following:
  • Diffuse astrocytoma, IDH-wildtype (grade 2-4)
  • Glioblastoma, IDH-wildtype
  • Diffuse midline glioma, H3 K27-altered
  • Diffuse hemispheric glioma, H3 G34-mutant
  • Diffuse pediatric-type high-grade glioma, H3-wildtype and IDH-wildtype PSMA positive pathological stain (by immunohistochemistry) of baseline (pre-radiotherapy) resection or biopsy sample
  • Completion of standard of care therapy including surgery (for resectable tumors) and adjuvant EBRT for glioma
  • Patients must be on a dose of 4 mg or less of dexamethasone (or dexamethasone equivalent steroid) for 5 days prior to first planned dose of radiopharmaceutical
  • Age ≥ 18
  • ECOG ≤ 2
  • Serum creatinine level \< 1.5 x ULN or EGFR \> 60 mL/min
  • Liver laboratory values: ALT and AST ≤ 2.5 x ULN; Albumin \> 2 g/ dL; Bilirubin \< 3 X ULN
  • Normal organ and marrow function as defined as the following
  • Total white blood count \> 3.0 K/mcL
  • ANC ≥ 1.5 K/mcL
  • Platelets ≥ 100 K/mcL
  • Hemoglobin ≥ 9 g/dL
  • Adequate contraception prior to registration (see section 9.0)
  • Ability to understand, and willingness to sign the informed consent.

Exclusion

  • Patient known to harbor any other non-canonical IDH mutations (i.e., non-R132H)
  • Target lesion within 5 mm of either the brainstem, optic chiasm or optic nerves Receipt of bevacizumab as part of the initial treatment for glioma
  • Life expectancy less than 12 weeks
  • Nonhealing wound, ulcer or bone fracture
  • History of severe brain injury
  • Patient not eligible for sequential MRI evaluations
  • Patients with prior RT to \> 25% of the skeleton or prior exposure to prior Radium223, Strontium89 or Samarium153 containing compounds
  • Patients with a prior or concurrent malignancy whose natural history or treatment has the potential to interfere with the safety or efficacy assessment of the investigational regimen
  • Patients with known or suspected history of grade II or higher chronic kidney disease (CKD)
  • Unable to tolerate the PSMA PET/MR or PSMA PET/CT
  • History of viral hepatitis or chronic liver disease with active symptoms
  • History of pituitary or adrenal dysfunction
  • Previously diagnosed active infection (e.g., human immunodeficiency virus \[HIV\] or viral hepatitis)
  • Any condition that in the opinion of the investigator, would preclude participation in this study
  • Receipt of any other investigational agents or participation in a concurrent treatment protocol
  • Known allergies, hypersensitivities, or intolerance to 68Ga-PSMA-11/177Lu-PSMA-617 or its inactive compounding components
  • Current or planned pregnancy
  • Refusal to comply with detailed contraception requirements

Key Trial Info

Start Date :

October 27 2025

Trial Type :

INTERVENTIONAL

Allocation :

ESTIMATED

End Date :

October 1 2027

Estimated Enrollment :

20 Patients enrolled

Trial Details

Trial ID

NCT07223034

Start Date

October 27 2025

End Date

October 1 2027

Last Update

November 4 2025

Active Locations (7)

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Page 1 of 2 (7 locations)

1

Memorial Sloan Kettering Basking Ridge (Limited Protocol Activities)

Basking Ridge, New Jersey, United States, 07920

2

Memorial Sloan Kettering Monmouth (Limited Protocol Activities)

Middletown, New Jersey, United States, 07748

3

Memorial Sloan Kettering Bergen (Limited Protocol Activities)

Montvale, New Jersey, United States, 07645

4

Memorial Sloan Kettering Suffolk - Commack (Limited Protocol Activities)

Commack, New York, United States, 11725