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
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Detaljeret beskrivelse
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.
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiesteder
-
-
California
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Duarte, California, Forenede Stater, 91010
- City of Hope Medical Center
-
Ledende efterforsker:
- Lisa A. Feldman
-
Kontakt:
- Lisa A. Feldman
- Telefonnummer: 626-218-8680
- E-mail: lfeldman@coh.org
-
-
Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
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
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Diagnostisk
- Tildeling: Ikke-randomiseret
- Interventionel model: Sekventiel tildeling
- Maskning: Ingen (Åben etiket)
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
|---|---|
|
Eksperimentel: Phase 1 (collection of tears)
Patients and healthy controls undergo collection of tears on study.
|
Hjælpestudier
Hjælpestudier
Undergo collection of tears
Andre navne:
Undergo collection of blood and standard of care CSF samples
Andre navne:
|
|
Eksperimentel: 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.
|
Hjælpestudier
Hjælpestudier
Undergo collection of tears
Andre navne:
Undergo collection of blood and standard of care CSF samples
Andre navne:
|
Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Proportion of samples containing at least 2 uL of tear (feasibility)
Tidsramme: 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
|
Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
|
Quality and integrity of tear-derived extracellular vesicles (EVs)
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
|
Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Samarbejdspartnere
Samarbejdspartnere
Efterforskere
Efterforskere
- Ledende efterforsker: Lisa A Feldman, City of Hope Medical Center
Datoer for undersøgelser
Studer store datoer
Studiestart (Anslået)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
- Neoplasmer
- Neoplasmer efter histologisk type
- Neoplasmer, kirtel og epitel
- Astrocytom
- Gliom
- Neoplasmer, Neuroepithelial
- Neuroektodermale tumorer
- Neoplasmer, kimceller og embryonale
- Neoplasmer, nervevæv
- Glioblastom
- Undersøgelsesteknikker
- Kliniske laboratorieteknikker
- Diagnostiske teknikker og procedurer
- Diagnose
- Håndtering af eksemplar
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 25617 (Anden identifikator: City of Hope Medical Center)
- P30CA033572 (U.S. NIH-bevilling/kontrakt)
- NCI-2026-05843 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter
Studerer et amerikansk FDA-reguleret lægemiddelprodukt
Studerer et amerikansk FDA-reguleret enhedsprodukt
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