Clinical trial Recruiting at 2 sites Interventional Ages 18 to 80

Local targeted alpha therapy using 225Ac‑DOTA‑SP for newly diagnosed WHO grade 3–4 glioma

Official title: Medical Experiment - Assessment of Efficacy & Safety of Local, Targeted Therapy With Neuropeptide Labelled With Alpha Emitter [225Ac]Ac-DOTA-SP (TAT) as Supplementary Therapy Following Standard Treatment Of Glioma (WHO G3-G4)

Run by Medical University of Warsaw · NCT07488754 · Data updated 2026-11-12

This trial tests a local peptide‑guided alpha‑particle treatment (225Ac‑DOTA‑SP) in adults 18–80 with newly diagnosed WHO grade 3–4 glioma after initial surgery and radiochemotherapy to see if it safely targets residual tumor and improves local control.

Quick facts

Study typeInterventional
Ages18 Years to 80 Years
SexAll
Enrollment35 (estimated)
SponsorMedical University of Warsaw
Academic / other
Drugs / interventionschemotherapy, radiation
Locations2 sites (Warsaw, Poland and 1 other locations)
StatusRecruiting
StartedOctober 1, 2025
Main results expectedSeptember 2027
Study endsSeptember 2028
Registry record updatedApril 6, 2026
Trial IDNCT07488754 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults 18–80 with histologically confirmed WHO grade 3–4 glioma who have completed first‑line surgery and radiochemotherapy, have Karnofsky ≥70, no MRI evidence of progression or radiation necrosis, and do not require urgent surgery.

Probably not a fit

Patients with low‑grade glioma, active progression or recurrence, radiation‑induced necrosis, poor performance status, or need for emergency surgery are unlikely to benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Researchers deliver [225Ac]Ac‑DOTA‑SP directly into the tumor cavity or surrounding area after standard surgery and radiochemotherapy so the peptide can bind neurokinin‑1 receptors on glioma cells and emit highly localized alpha radiation. The study is a single‑arm interventional protocol enrolling adults with histologically confirmed WHO grade 3–4 glioma, Karnofsky performance status ≥70, and no imaging evidence of progression or radiation necrosis. Outcomes focus on safety and local tumor control with serial MRI and clinical follow‑up to monitor response and adverse events. Treatment is performed at specialist neurosurgical centers under radiation‑safety procedures.

Why it matters

Potential benefit: If successful, this approach could deliver potent, focused radiation to residual tumor cells while limiting exposure to healthy brain, potentially improving local control and survival.

How similar studies have gone: While alpha‑emitter radiotherapies such as 225Ac‑PSMA have shown promising results in other cancers, intratumoral peptide‑directed alpha therapy for high‑grade glioma remains early and has not yet been validated in large clinical trials.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* age 18-80;
* histologically confirmed diffuse glioma (CNS WHO G3-G4);
* after standard treatment with biopsy or resection, radiotherapy and/or chemotherapy;
* no sign of progression or radiation necrosis;
* functional state \>70 according to Karnofsky's performance scale (KPS);
* ability to give informed consent to participate in the study.

Exclusion Criteria:

* low-grade glioma;
* progression or recurrence defined as: deterioration of the patient's condition according to the Karnofsky Performance Scale, worsening of neurological function, progressive neurological deficit, need to initiate or increase corticosteroid dose by \>50%, progression or recurrence assessed on MRI (RANO criteria);
* radiation-induced necrosis secondary to radiotherapy; may occur within the first 3 months after radiotherapy (exception: a patient after resection of radiation necrosis - not earlier than 4 weeks post-surgery, after a follow-up MRI);
* need for emergency surgery (e.g., acute increase in intracranial pressure);
* significant postoperative complications, e.g., KPS \< 70, wound infection, cerebrospinal fluid leak;
* leak into the ventricular system \>10% during the catheter patency check;
* open/ventricle-connected resection cavity;
* catheter obstruction;
* estimated life expectancy under 3 months;
* patients without preserved logical/verbal contact;
* lack of cooperation from the patient;
* inability to give informed, voluntary consent to participate in the study;
* patients enrolled in another medical trial;
* patients who received any other investigational drug within 1 month prior to the first dose;
* prior treatment with \[225Ac\]Ac-DOTA-SP;
* breastfeeding or pregnant women;
* severe comorbid organ diseases that, in the Investigator's opinion, significantly increase the procedural risk.

Where it's running

  • Department of Neurosurgery, Medical University of Warsaw, Banacha 1a
    Warsaw, Poland, Poland
    Recruiting
  • Department of Neurosurgery, National Instiute of Oncology, W.K. Roentgena 5
    Warsaw, Poland, Poland
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.