- ICH GCP
- Amerikanska kliniska prövningsregistret
- Klinisk prövning 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
Studieöversikt
Status
Betingelser
Detaljerad beskrivning
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.
Studietyp
Inskrivning (Beräknad)
Fas
- Inte tillämpbar
Kontakter och platser
Studieorter
-
-
California
-
Duarte, California, Förenta staterna, 91010
- City of Hope Medical Center
-
Huvudutredare:
- Lisa A. Feldman
-
Kontakt:
- Lisa A. Feldman
- Telefonnummer: 626-218-8680
- E-post: lfeldman@coh.org
-
-
Deltagandekriterier
Urvalskriterier
Åldrar som är berättigade till studier
- Vuxen
- Äldre vuxen
Tar emot friska volontärer
Beskrivning
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
Hur är studien utformad?
Designdetaljer
- Primärt syfte: Diagnostisk
- Tilldelning: Icke-randomiserad
- Interventionsmodell: Sekventiell tilldelning
- Maskning: Ingen (Open Label)
Vapen och interventioner
Deltagargrupp / Arm |
Intervention / Behandling |
|---|---|
|
Experimentell: Phase 1 (collection of tears)
Patients and healthy controls undergo collection of tears on study.
|
Sidostudier
Sidostudier
Undergo collection of tears
Andra namn:
Undergo collection of blood and standard of care CSF samples
Andra namn:
|
|
Experimentell: 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.
|
Sidostudier
Sidostudier
Undergo collection of tears
Andra namn:
Undergo collection of blood and standard of care CSF samples
Andra namn:
|
Vad mäter studien?
Primära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Proportion of samples containing at least 2 uL of tear (feasibility)
Tidsram: 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
|
Sekundära resultatmått
Resultatmått |
Åtgärdsbeskrivning |
Tidsram |
|---|---|---|
|
Quality and integrity of tear-derived extracellular vesicles (EVs)
Tidsram: 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)
Tidsram: 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
Tidsram: 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
Tidsram: 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
|
Samarbetspartners och utredare
Sponsor
Samarbetspartners
Utredare
- Huvudutredare: Lisa A Feldman, City of Hope Medical Center
Studieavstämningsdatum
Studera stora datum
Studiestart (Beräknad)
Primärt slutförande (Beräknad)
Avslutad studie (Beräknad)
Studieregistreringsdatum
Först inskickad
Först inskickad som uppfyllde QC-kriterierna
Första postat (Faktisk)
Uppdateringar av studier
Senaste uppdatering publicerad (Faktisk)
Senaste inskickade uppdateringen som uppfyllde QC-kriterierna
Senast verifierad
Mer information
Termer relaterade till denna studie
Ytterligare relevanta MeSH-villkor
- Neoplasmer
- Neoplasmer efter histologisk typ
- Neoplasmer, körtel och epitel
- Astrocytom
- Gliom
- Neoplasmer, neuroepitelial
- Neuroektodermala tumörer
- Neoplasmer, könsceller och embryonala
- Neoplasmer, nervvävnad
- Glioblastom
- Undersökningstekniker
- Kliniska laboratorietekniker
- Diagnostiska tekniker och procedurer
- Diagnos
- Provhantering
Andra studie-ID-nummer
- 25617 (Annan identifierare: City of Hope Medical Center)
- P30CA033572 (U.S.S. NIH-anslag/kontrakt)
- NCI-2026-05843 (Registeridentifierare: CTRP (Clinical Trial Reporting Program))
Läkemedels- och apparatinformation, studiedokument
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