- ICH GCP
- Registre américain des essais cliniques
- Essai clinique NCT07775534
Tear Fluid for the Detection of Tumor-associated Extracellular Vesicles in Glioblastoma Patients
Molecular Analysis of Tear Fluid Collected From Glioblastoma Patients: A Two-Phased Pilot Study
Aperçu de l'étude
Statut
Les conditions
Description détaillée
PRIMARY OBJECTIVE:
I. To assess the feasibility of tear collection from healthy control and glioblastoma (GBM) patients (Phase 1 and 2).
SECONDARY OBJECTIVES:
I. To assess the feasibility of isolating and analyzing tumor-associated extracellular vesicles (TEVs) from tears of GBM patients (Phase 1 and 2).
II. To characterize the composition of tear-derived extracellular vesicles (EVs).
EXPLORATORY OBJECTIVES:
I. To compare EV profiles between patients with GBM and healthy control participants (Phase 1 and 2).
II. To explore longitudinal changes in EV profiles of patients from tears, CSF and plasma (Phase 2), and their association with clinical disease status, including radiographic response and recurrence.
III. To explore concordance between EV profiles and matched tumor molecular pathology as determined by HopeSeq analysis (Phase 2).
OUTLINE: Patients are assigned to 1 of 2 phases.
PHASE 1: Patients and healthy controls undergo collection of tears on study.
PHASE 2: Patients and healthy controls undergo collection of tears and blood samples and patients undergo collection of standard of care CSF samples throughout the study.
After completion of study intervention, patients are followed for up to 2 years.
Type d'étude
Inscription (Estimé)
Phase
- N'est pas applicable
Contacts et emplacements
Lieux d'étude
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California
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Duarte, California, États-Unis, 91010
- City of Hope Medical Center
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Chercheur principal:
- Lisa A. Feldman
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Contact:
- Lisa A. Feldman
- Numéro de téléphone: 626-218-8680
- E-mail: lfeldman@coh.org
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-
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
- Adulte plus âgé
Accepte les volontaires sains
La description
Inclusion Criteria:
- Adults (age ≥ 18)
- Male and female
- All racial and ethnic groups
- Pathologically-proven diagnosis of GBM or healthy volunteers
- For GBM patients, presence of a previously placed Rickham reservoir or shunt
- Able to provide informed consent (or via legal representative)
- Willing to undergo Schirmer strip procedure
Exclusion Criteria:
- Active ocular infection or inflammation
- Recent ocular surgery (within 3 months)
- Chronic dry eyes
- Known allergy or hypersensitivity to topical anesthetics
- Cognitive impairment
- Pregnancy
- Any condition that, in the opinion of the investigator, would interfere with the participant's ability to comply with study procedures or place the participant at undue risk
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Diagnostique
- Répartition: Non randomisé
- Modèle interventionnel: Affectation séquentielle
- Masquage: Aucun (étiquette ouverte)
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
|---|---|
|
Expérimental: Phase 1 (collection of tears)
Patients and healthy controls undergo collection of tears on study.
|
Etudes annexes
Etudes annexes
Undergo collection of tears
Autres noms:
Undergo collection of blood and standard of care CSF samples
Autres noms:
|
|
Expérimental: Phase 2 (collection of tears, blood, CSF)
Patients and healthy controls undergo collection of tears and blood samples and patients undergo collection of standard of care CSF samples throughout the study.
|
Etudes annexes
Etudes annexes
Undergo collection of tears
Autres noms:
Undergo collection of blood and standard of care CSF samples
Autres noms:
|
Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Proportion of samples containing at least 2 uL of tear (feasibility)
Délai: Up to 2 years
|
An exact two-sided 95% confidence interval will be provided as a measure of precision.
P-values and confidence intervals will be interpreted descriptively.
|
Up to 2 years
|
Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
|
Quality and integrity of tear-derived extracellular vesicles (EVs)
Délai: Up to 2 years
|
Will be assessed by the ability to generate interpretable SEVEN imaging data with acceptable signal-to-noise characteristics and vesicle morphology consistent with intact vesicles.
Assay linearity will be evaluated using a dilution series.
|
Up to 2 years
|
|
Successful detection and quantification of tear-derived tumor-associated EVs (TEVs)
Délai: Up to 2 years
|
Will be evaluated using the SEVEN platform, including measurable TEV abundance and detection of glioblastoma-associated markers.
Assay linearity will be evaluated using a dilution series.
|
Up to 2 years
|
|
Characterization of the protein composition of tear-derived EVs
Délai: Up to 2 years
|
Will include detection and relative quantification of central nervous system tumor-associated proteins using enzyme-linked immunosorbent assay.
Will be descriptively summarized.
|
Up to 2 years
|
|
Detection of tumor-associated genetic and epigenetic alterations
Délai: Up to 2 years
|
Will be determined by polymerase chain reaction-based sequencing methods within tear-derived EVs.
Will be descriptively summarized.
|
Up to 2 years
|
Collaborateurs et enquêteurs
Parrainer
Collaborateurs
Les enquêteurs
- Chercheur principal: Lisa A Feldman, City of Hope Medical Center
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Termes MeSH pertinents supplémentaires
- Tumeurs
- Tumeurs par type histologique
- Tumeurs, glandulaires et épithéliales
- Astrocytome
- Gliome
- Tumeurs, neuroépithéliales
- Tumeurs neuroectodermiques
- Tumeurs, cellules germinales et embryonnaires
- Tumeurs, tissu nerveux
- Glioblastome
- Techniques d'investigation
- Techniques de laboratoire clinique
- Techniques et procédures de diagnostic
- Diagnostic
- Manipulation des échantillons
Autres numéros d'identification d'étude
- 25617 (Autre identifiant: City of Hope Medical Center)
- P30CA033572 (Subvention/contrat des NIH des États-Unis)
- NCI-2026-05843 (Identificateur de registre: CTRP (Clinical Trial Reporting Program))
Informations sur les médicaments et les dispositifs, documents d'étude
Étudie un produit pharmaceutique réglementé par la FDA américaine
Étudie un produit d'appareil réglementé par la FDA américaine
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