Clinical trial NCT05700071: MRS of Glioma Genomics
Official title: Magnetic Resonance Spectroscopy Markers of Glioma Genomics
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: NA
Conditions: Glioma
Keywords: Gliomas
Isocitrate dehydrogenase
1p19q codeletion
MR Spectroscopy
MRI
Diagnosis
Treatment monitoring
Lead sponsor: Institut National de la Santé Et de la Recherche Médicale, France
Sponsor class: OTHER_GOV
First posted: 2023-01-26
Enrollment: 80
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: BASIC_SCIENCE

Brief summary: In France, about 5000 new people with a primary malignant brain tumor are diagnosed each year. The most common primary tumors are gliomas, originating from glial cells (astrocytomas and oligodendrogliomas). Low-grade gliomas are mildly aggressive, but they often evolve into a more malignant form.

Mutations in the genes encoding isocitrate dehydrogenase (IDH) are found in about 80% of low-grade gliomas and are associated with a favorable prognosis. Remarkably, IDH-mutated gliomas are characterized by a specific cellular metabolism causing the accumulation of D-2-hydroxyglutarate (2HG) in tumor cells. 2HG can be detected in vivo using 1H magnetic resonance spectroscopy (MRS) and is recognized as a unique, noninvasive biomarker of IDH-mutated gliomas. Noninvasive detection of IDH mutations via 2HG MRS represents a crucial step for decision-making and patient care.

A subset of IDH-mutated tumors also presents a complete deletion of 1p and 19q chromosome arms (1p/19q codeletion). The 1p/19q codeletion is specifically linked to the oligodendroglial histologic subtype and it has been associated with a better patient outcome. However, the biological effects of this genetic alteration are still unclear and in vivo markers are lacking. Recently, we reported the first in vivo detection of the cystathionine molecule in human brain gliomas using MRS and explored the association between cystathionine accumulation and 1p/19q codeletion in gliomas.

In this project, the investigation team will combine cutting edge MRI and MRS techniques for metabolic and microstructural characterization of brain tumors with the aim of providing novel reliable noninvasive biomarkers of tumor genetic subtypes. These methods will enable noninvasive identification of IDH-mutated gliomas and, potentially, 1p/19q codeleted gliomas. In addition, the researchers will investigate the utility of 2HG, cystathionine and MRI microstructural markers to monitor tumor response to anti-cancer treatments and tumor progression.

The outputs of this project, altogether, may open new avenues to a better understanding of the pathophysiological mechanisms of oncogenesis and the design of new treatments for gliomas.


Eligibility criteria: Inclusion Criteria:

* Affiliation à un régime de sécurité sociale (bénéficiaire ou ayant droit)
* Recueil du consentement écrit et éclairé
* Une des deux situations suivantes :

Groupe 1 : Probable gliome de grade II/III, dont l'exérèse est programmée

Groupe 2 : gliome de grade II ou III prouvé histologiquement avec statut IDH1/IDH2 connu, n'ayant reçu aucun autre traitement que la chirurgie, et devant débuter un traitement autre que la chirurgie.

* Présence d'un résidu tumoral évaluable (\>2 cm de diamètre en FLAIR)
* Index de Karnofsky \> 60
* Contraception efficace pendant la durée de la recherche, complété par un test de grossesse négatif pour les femmes en âge de procréer.

Exclusion Criteria:

* Contrindications à l'IRM:

pace maker ou stimulateur neuronal, corps étranger métallique intraoculaire ou intracérébral, implant cochléaire, valve cardiaque ou matériel artériel chirurgical métallique non compatible IRM, matériel métallique susceptible de concentrer les impulsions de radio fréquence, claustrophobie

* femmes enceintes ou allaitantes
* Critères réglementaires :

Femme enceinte, parturiente, allaitante; Absence de signature du consentement ou refus du participant; Mesure de protection juridique (tutelle, curatelle, sauvegarde de justice); Participation à une autre recherche ne permettant pas de respecter la période; d'exclusion entre les 2 recherches; Personne ne bénéficiant pas d'un régime d'assurance maladie

Primary outcomes:
measure: Metabolite concentrations by MRS
timeFrame: 1.5 hour
Secondary outcomes:
measure: Diffusion MRI metrics
timeFrame: 1,5 hours
measure: Metabolic changes during an anti-tumor treatment
timeFrame: 1 year
measure: Diffusion MRI and amide proton transfer signal changes during an anti-tumor treatment.
timeFrame: 1 year
Other outcomes:
Locations:
city: Paris
country: France
facility: Hôpital Pitié Salpêtrière, 47 Boulevard de l'Hôpital, 75013 Paris
state: Ile de France
city: Paris
country: France
facility: Pitié-Salpetrière Hospital
Study officials:
affiliation: Paris Brain Institute, Paris, France
name: Francesca Branzoli, PhD
role: STUDY_DIRECTOR
affiliation: Paris Brain Institute, AP-HP, Paris, France
name: Marc Sanson, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References: