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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
Studie Overzicht
Toestand
Conditie
Gedetailleerde beschrijving
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.
Studietype
Inschrijving (Geschat)
Fase
- Niet toepasbaar
Contacten en locaties
Studie Locaties
-
-
California
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Duarte, California, Verenigde Staten, 91010
- City of Hope Medical Center
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Hoofdonderzoeker:
- Lisa A. Feldman
-
Contact:
- Lisa A. Feldman
- Telefoonnummer: 626-218-8680
- E-mail: lfeldman@coh.org
-
-
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
- Oudere volwassene
Accepteert gezonde vrijwilligers
Beschrijving
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
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Diagnostisch
- Toewijzing: Niet-gerandomiseerd
- Interventioneel model: Sequentiële toewijzing
- Masker: Geen (open label)
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Phase 1 (collection of tears)
Patients and healthy controls undergo collection of tears on study.
|
Nevenstudies
Nevenstudies
Undergo collection of tears
Andere namen:
Undergo collection of blood and standard of care CSF samples
Andere namen:
|
|
Experimenteel: 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.
|
Nevenstudies
Nevenstudies
Undergo collection of tears
Andere namen:
Undergo collection of blood and standard of care CSF samples
Andere namen:
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Proportion of samples containing at least 2 uL of tear (feasibility)
Tijdsspanne: 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
|
Secundaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
Quality and integrity of tear-derived extracellular vesicles (EVs)
Tijdsspanne: 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)
Tijdsspanne: 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
Tijdsspanne: 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
Tijdsspanne: 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
|
Medewerkers en onderzoekers
Sponsor
Medewerkers
Onderzoekers
- Hoofdonderzoeker: Lisa A Feldman, City of Hope Medical Center
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Aanvullende relevante MeSH-voorwaarden
- Neoplasmata
- Neoplasmata per histologisch type
- Neoplasmata, glandulair en epitheel
- Astrocytoom
- Glioom
- Neoplasmata, neuro-epitheliaal
- Neuro-ectodermale tumoren
- Neoplasmata, kiemcellen en embryonaal
- Neoplasmata, zenuwweefsel
- Glioblastoom
- Onderzoekstechnieken
- Klinische laboratoriumtechnieken
- Diagnostische technieken en procedures
- Diagnose
- Exemplaarbehandeling
Andere studie-ID-nummers
- 25617 (Andere identificatie: City of Hope Medical Center)
- P30CA033572 (Subsidie/contract van de Amerikaanse NIH)
- NCI-2026-05843 (Register-ID: CTRP (Clinical Trial Reporting Program))
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
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