Clinical trial Recruiting at 2 sites Observational Ages 18 and up

Amino-acid PET to track tumor response in IDH‑mutant gliomas (APPEAR)

Official title: Positron Emission Tomography-based Response Assessment in Isocitrate Dehydrogenase (IDH)-Mutant Gliomas - a Bicentric, Prospective, Observational Study

Run by LMU Klinikum · NCT07159607 · Data updated 2026-11-12

This project will test whether amino‑acid PET scans can better track tumor activity over time in adults with IDH‑mutant gliomas.

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment100 (estimated)
SponsorLMU Klinikum
Academic / other
Locations2 sites (Vienna and 1 other locations)
StatusRecruiting
StartedJuly 17, 2025
Main results expectedJuly 16, 2030
Study endsJuly 16, 2030
Registry record updatedSeptember 8, 2025
Trial IDNCT07159607 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18) with histologically verified IDH‑mutant astrocytoma or oligodendroglioma who are receiving standard postoperative care and will undergo amino‑acid PET as part of routine follow‑up are ideal candidates.

Probably not a fit

Patients without an IDH‑mutant glioma, those not receiving routine amino‑acid PET scans, or those enrolled in other interventional experimental therapy trials are unlikely to benefit from participation.

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

What this trial studies

This is a prospective, bicentric observational effort collecting longitudinal amino‑acid PET and routine MRI data in adults with histologically confirmed IDH‑mutant astrocytoma or oligodendroglioma. Participating sites will perform PET (including FET PET) during standard postoperative care and follow-up, and imaging will be interpreted using PET RANO recommendations alongside MRI/RANO evaluations. The goal is to describe PET signal changes before, during, and after treatment to distinguish true progression from treatment‑related changes. No experimental therapies are given; the study documents imaging and clinical course under usual care.

Why it matters

Potential benefit: If successful, this work could help doctors tell true tumor growth from treatment effects and reduce unnecessary interventions.

How similar studies have gone: Amino‑acid PET has shown promise in prior glioma research and PET RANO guidelines exist, but well‑annotated longitudinal data specifically in IDH‑mutant gliomas remain limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ≥ 18 years
* Histologically verified diffuse IDH-mutant glioma (astrocytoma, oligodendroglioma) of any grade as defined in the WHO classification of tumors of the central nervous system
* Postoperative treatment according to current standard of care at the time of study inclusion
* Performance of amino acid PET as part of clinical routine

Exclusion Criteria:

* Inclusion in another clinical trial/investigational study involving an experimental therapy or study medication
* Inclusion criteria not met

Where it's running

  • Medical University of Vienna
    Vienna, Austria
    Recruiting
  • LMU Hospital
    Munich, Bavaria, Germany
    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.
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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.