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Characterization of the Blood-Brain Barrier in High-Grade Glioma Through Immunohistochemical, Transcriptional, Fluorescein and Radiological Analyses

25 juillet 2026 mis à jour par: Patrick Morris
This prospective study aims to characterize blood brain barrier (BBB) disruption in patients with newly diagnosed glioblastoma multiforme undergoing surgical resection. The study integrates advanced MRI, circulating BBB biomarkers, neurocognitive assessment, and molecular analysis of tumor tissue to investigate relationships between BBB integrity, tumor biology, and neurological function. Participants will undergo serial assessments before surgery, after surgery, and following radiotherapy. Tumor tissue collected during standard-of-care resection will undergo immunohistochemical and transcriptional

Aperçu de l'étude

Statut

Recrutement

Les conditions

Intervention / Traitement

Description détaillée

Glioblastoma is characterized by disruption of the blood-brain barrier, which may influence tumor progression, neurological dysfunction, treatment delivery, and clinical outcomes. This study seeks to comprehensively characterize BBB integrity using multimodal approaches.

Participants with newly diagnosed GBM selected for surgical resection will undergo:

  • Clinical and demographic data collection.
  • Neurocognitive assessment using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) and Reading the Mind in the Eyes Test (RMET).
  • High-resolution 3-Tesla MRI with and without gadolinium contrast, including structural and functional imaging sequences.
  • Blood sampling for measurement of biomarkers associated with BBB disruption and neuronal injury, including S100β, GFAP, UCHL1, amyloid beta, phosphorylated tau, and neuron-specific enolase.
  • Collection of tumor tissue during routine surgical resection for immunohistochemical and transcriptional analyses.

Serial evaluations will be performed preoperatively, postoperatively, at 72 hours, at 4 weeks, and 4 weeks following completion of radiotherapy, according to the assessment schedule.

Type d'étude

Interventionnel

Inscription (Estimé)

100

Phase

  • N'est pas applicable

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

  • Irlande
      • Beaumont, Irlande, D09
        • Recrutement
        • Beaumont RCSI Cancer Centre
        • Contact:

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

  • Adulte
  • Adulte plus âgé

Accepte les volontaires sains

Non

La description

Inclusion Criteria:

  • Adult patients aged 18 years or older.
  • Newly diagnosed glioblastoma.
  • Selected for surgical tumor resection.
  • Able and willing to provide written informed consent.
  • Able to undergo study assessments and follow-up procedures.

Exclusion Criteria:

  • Contraindication to magnetic resonance imaging.
  • Confusion, delirium, or altered state of consciousness that interferes with the ability to provide informed consent.
  • Any condition that, in the opinion of the investigator, would prevent completion of study procedures or compromise participant safety.

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Objectif principal: Diagnostique
  • Répartition: N / A
  • Modèle interventionnel: Affectation à un seul groupe
  • Masquage: Aucun (étiquette ouverte)

Armes et Interventions

Groupe de participants / Bras
Intervention / Traitement
Expérimental: Blood Brain Barrier Characterisation Cohort
Participants with newly diagnosed glioblastoma will undergo a standardized Phase 2 multimodal assessment program designed to characterize blood-brain barrier integrity. Study interventions include serial advanced contrast-enhanced MRI, blood biomarker sampling, neurocognitive assessments, and molecular analysis of tumor tissue obtained during standard of care surgical resection. Assessments will be performed longitudinally at predefined time points before surgery, after surgery, at 72 hours, at 4 weeks, and following completion of radiotherapy to evaluate changes in blood-brain barrier function and their association with clinical, radiological, and molecular outcomes.
Test diagnostique: Multimodal Blood Brain Barrier Assessment
A standardised multimodal diagnostic assessment designed to characterize blood brain barrier integrity in patients with newly diagnosed glioblastoma. The intervention includes advanced contrast enhanced MRI, serial blood sampling for measurement of blood-brain barrier and neuronal injury biomarkers (including S100β, GFAP, UCHL1, amyloid beta, phosphorylated tau, and neuron-specific enolase), neurocognitive assessments, and immunohistochemical and transcriptional analyses of tumor tissue obtained during standard-of-care surgical resection. Assessments are performed longitudinally before surgery, after surgery, at 72 hours, at 4 weeks, and following completion of radiotherapy.

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Serum Biomarkers of Blood-Brain Barrier Disruption and Neuronal Injury
Délai: Baseline (within 7 days before surgery), intraoperative, within 24 hours after surgery, 72 hours after surgery, 4 weeks after surgery, and 4 weeks after completion of radiotherapy
Serial measurement of serum biomarkers associated with blood-brain barrier disruption and neuronal injury, including S100β, GFAP, UCHL1, amyloid beta, phosphorylated tau, and neuron-specific enolase. Biomarker concentrations will be assessed longitudinally to characterize changes in blood-brain barrier integrity in patients with newly diagnosed glioblastoma undergoing surgical resection and radiotherapy.
Baseline (within 7 days before surgery), intraoperative, within 24 hours after surgery, 72 hours after surgery, 4 weeks after surgery, and 4 weeks after completion of radiotherapy

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
MRI Based Measures of Blood-Brain Barrier Integrity
Délai: 4 weeks after surgery
Assessment of blood-brain barrier disruption using contrast-enhanced 3-Tesla MRI, including quantitative and qualitative radiological measures of tumour enhancement and permeability. Imaging findings will be evaluated longitudinally and correlated with circulating biomarkers and clinical outcomes.
4 weeks after surgery
Immunohistochemical Characterisation of Blood-Brain Barrier Disruption
Délai: During surgical resection (single assessment)
Expression of blood-brain barrier-associated proteins within resected glioblastoma tissue assessed by immunohistochemical analysis. Findings will be used to characterize blood-brain barrier integrity and correlated with circulating biomarker and imaging measures.
During surgical resection (single assessment)
Transcriptional Characterisation of Blood-Brain Barrier Disruption
Délai: During surgical resection (single assessment)
Gene expression profiling of resected glioblastoma tissue to identify transcriptional signatures associated with blood-brain barrier disruption and tumour biology. Results will be correlated with blood biomarker and imaging findings.
During surgical resection (single assessment)
Neurocognitive Function Assessed by RBANS
Délai: Baseline (within 7 days before surgery), 4 weeks after surgery, and 4 weeks after completion of radiotherapy
Neurocognitive performance measured using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS). Changes in cognitive function will be examined in relation to blood-brain barrier integrity and treatment.
Baseline (within 7 days before surgery), 4 weeks after surgery, and 4 weeks after completion of radiotherapy

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Patrick Morris

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Réel)

1 mars 2022

Achèvement primaire (Estimé)

31 décembre 2029

Achèvement de l'étude (Estimé)

31 décembre 2035

Dates d'inscription aux études

Première soumission

22 juillet 2026

Première soumission répondant aux critères de contrôle qualité

25 juillet 2026

Première publication (Réel)

28 juillet 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

28 juillet 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

25 juillet 2026

Dernière vérification

1 juillet 2026

Plus d'information

Termes liés à cette étude

Mots clés

Termes MeSH pertinents supplémentaires

Autres numéros d'identification d'étude

  • 22-54

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

INDÉCIS

Description du régime IPD

De-identified individual participant data underlying the results reported in publications arising from this study may be shared with qualified researchers upon reasonable request, subject to approval by the study investigators, institutional policies, ethical approvals, and applicable data protection regulations. Data sharing will include relevant clinical, imaging, biomarker, and neurocognitive datasets necessary to support replication of study findings.

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .

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