NCT02691923 · David W. Roberts
Diagnostic Performance of Fluorescein as an Intraoperative Brain Tumor Biomarker
What this study is about
This clinical research will evaluate the diagnostic potential of fluorescein as visualized through an operating microscope relative to 1) contrast enhancement on co-registered preoperative MR scans, 2) intraoperative ALA-induced PpIX fluorescence and 3) gold-standard histology obtained from biopsy sampling during the procedure.
View original scientific description
This clinical research will evaluate the diagnostic potential of fluorescein as visualized through an operating microscope relative to 1) contrast enhancement on co-registered preoperative MR scans, 2) intraoperative ALA-induced PpIX fluorescence and 3) gold-standard histology obtained from biopsy sampling during the procedure. Subjects will include those people with operable brain tumor with first-time presumed pre-surgical diagnosis of high-grade glioma or low-grade glioma.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Preoperative diagnosis of either presumed first-time low or high grade glioma (astrocytoma, oligodendroglioma, mixed oligo-astrocytoma, anaplastic astrocytoma, and glioblastoma multiforme).
- Tumor judged to be suitable for open cranial resection based on preoperative imaging studies.
- Valid informed consent by subject or subject's LAR.
- No serious associated psychiatric illnesses.
- Age ≥ 21 years old.
Exclusion criteria
- Pregnant women or women who are breast feeding.
- History of hypersensitivity to fluorescein.
- History of cutaneous photosensitivity, porphyria, hypersensitivity to porphyrins, photodermatosis, exfoliative dermatitis.
- History of liver disease within the last 12 months.
- Elevated LFTs (AST, ALT, ALP or bilirubin levels greater than 2.5 times the normal limit) from laboratory tests conducted within 30 days prior to surgery.
- Serum creatinine in excess of 180µmol/L (2.04 md/dL) within 30 days prior to surgery.
- Inability to comply with the photosensitivity precautions associated with the study.
Where
- Lebanon, New Hampshire
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Aug 3, 2025 · Source of record for eligibility and locations