Brain TumorNCT06087393
CONVIVO Endomicroscopy
A study testing CONVIVO in people with Brain Tumor, run by Northwell Health at 1 site in United States.
Trial summary
Visualization of the tissue microstructure during neurosurgery using a non destructive handheld imaging technology producing a real time digital image ("optical biopsy") at cellular resolution is a novel method that holds great promise for optimization and improvement of the surgical treatment of brain pathologies… Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Brain Tumor
- What is being tested?
- CONVIVO
- Type of treatment
- Medical device
- How many people
- 30 participants
- Where
- 1 siteUnited States
- Study dates
- 8 Jan 2024to 12 Oct 2026
- Phase
- Interventional
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- . The patient is suffering from an intracranial lesion requiring surgery:
- Patients undergoing neurosurgical resection for intrinsic presumably high grade, invasive tumors.
- Patients undergoing neurosurgical resection for other brain tumors,.
- All patient groups will only be comprised of elective surgical patients who have signed the informed consent prior to use
Who cannot join
- History of hypersensitivity to fluorescein
- History of allergy or bronchial asthma
- Renal failure - Children (patients less than 18 years of age)
- Pregnant women
- Breast feeding women
- Patients with inability to give informed consent
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
United States1 site, 1 recruiting
- Recruiting
Northwell Health
Manhasset, New York, 11030
Betsy Moclair, 516-253-7753, bmoclair@northwell.edu
About this study
Official title: A Feasibility Analysis of an in Vivo CONVIVO Endomicroscopy During Brain Surgery.
Visualization of the tissue microstructure during neurosurgery using a non destructive handheld imaging technology producing a real time digital image ("optical biopsy") at cellular resolution is a novel method that holds great promise for optimization and improvement of the surgical treatment of brain pathologies, brain tumors in particular. The goal of this project is to investigate and assess the ease of use of the CONVIVO FDA cleared system in discriminating healthy and abnormal tissues during in vivo use on the brain during neurosurgery in 30 patients with a working diagnosis of intrinsic brain tumors.
Read the detailed description
During surgery for the removal of brain tumors, frozen-section biopsies are routinely taken intraoperatively to help the surgeon to distinguish abnormal tissue areas from normal tissue, and to assess and guide the extent of tumor or mass resection. Frozen-section analysis is time-consuming and freezing may produce architectural artifacts in the tissue sample that are difficult to interpret. As well, some tumors are heterogeneous in cell composition, so a tissue biopsy in one area may not represent the entire tumor mass. Biopsies acquired at the border regions or margins of the surgical resection are especially crucial, because it is at those regions where decisions based on tissue analysis guide the surgeon to further extend the resection where there is more tumor tissue remaining, or halt the resection for various reasons. In practice, the number of biopsies that can be taken during surgery is limited, because the acquisition procedure is time consuming. A technology which enables intraoperative real-time visualization of tissue at cellular resolution could provide a significant advantage in defining abnormal tissue margins. Such a technology could be used to identify abnormal tissue or at a minimum could screen for the most relevant areas from which formal biopsies should be acquired. It also could help to make the process of taking biopsies more efficient, so that the total number of biopsies needed can be reduced, thus increasing positive biopsy yield. This effort is a follow-up to a previous confocal endomicroscopy in vivo study conducted at the Barrow Neurological Institute in Phoenix. Based on this work, the upgraded version of the confocal laser endomicroscopy (CONVIVO) received 510k clearance from FDA. This study aims to evaluate the learning curve associated with the intraoperative imaging of tissue microstructure and microvasculature during neurosurgical procedures using fluorescein as a contrast agent for 30 patients undergoing surgery for a working diagnosis of brain tumor. The procedure involves a small microscope (about the size of a neurosurgical suction device) which is placed gently into contact with the tissue, providing significant in vivo magnification on a scale similar to that obtained by the pathology laboratory microscope. The focus of this study will be to examine the quality of images taken from the tumor core and tumor margin, and assess the time required for both neurosurgeon and pathologist to agree on a good image. A good image is clear, has well-defined structures, very few artifacts, and is comparable to a standard frozen section biopsy in its diagnostic potential.
- Conditions
- Brain Tumor
- Being tested
- CONVIVO
- Medical subject headings
- Brain Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
CONVIVODevice
Any clinical adverse event (AE), laboratory abnormality, or other medical condition or situation occurs such that continued participation in the study would not be in the best interest of the participant. The participant meets an exclusion criterion (either newly developed or not previously recognized) that precludes further study participation.
What is being measured
The primary outcome is the main question the study is designed to answer.
Investigate ease of CONVIVO.
The outcome is to investigate and assess the ease of use of the CONVIVO FDA cleared system in discriminating healthy and abnormal tissues during in vivo use on the brain during neurosurgery in 30 patients with a working diagnosis of intrinsic brain tumors.
Measured: one year
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted17 Oct 2023
- Study start8 Jan 2024
- Primary completion12 Oct 2026 (estimated)
- Study completion12 Oct 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Brain TumorStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Device feasibility
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- This study is single cohort and plans to enroll a total of 30 patients.
- Masking
- None (open label)
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Northwell Health
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06087393
- Sponsor's protocol ID
- 21-1289
- Status last verified
- Jun 2026
- First submitted
- 12 Oct 2023
- Last updated
- 4 Jun 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- Yes
Publications
Acerbi, F., Pollo, B., De Laurentis, C., Restelli, F., Falco, J., Vetrano, I. G., ... & DiMeco, F. (2020). Ex Vivo Fluorescein-Assisted Confocal Laser Endomicroscopy (CONVIVO® System) in Patients With Glioblastoma: Results From a Prospective Study. Frontiers in Oncology, 10. Belykh, E., Miller, E. J., Patel, A. A., Yazdanabadi, M. I., Martirosyan, N. L., Yağmurlu, K., ... & Preul, M. C. (2018). Diagnostic accuracy of a confocal laser endomicroscope for in vivo differentiation between normal injured and tumor tissue during fluorescein-guided glioma resection. World neurosurgery, 115, e337-e348
Study at a glance
From the registry record, last updated by the sponsor on 4 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Feasibility Analysis of an in Vivo CONVIVO Endomicroscopy During Brain Surgery.
- ClinicalTrials.gov ID
- NCT06087393
- Acronym / sponsor ID
- 21-1289
- Conditions
- Brain Tumor
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- Northwell HealthUniversity, hospital or other
- Study start
- 8 Jan 2024 (actual)
- Primary completion
- 12 Oct 2026 (estimated)
- Study completion
- 12 Oct 2026 (estimated)
- First posted
- 17 Oct 2023 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Visualization of the tissue microstructure during neurosurgery using a non destructive handheld imaging technology producing a real time digital image ("optical biopsy") at cellular resolution is a novel method that holds great promise for optimization and improvement of the surgical treatment of brain pathologies, brain tumors in particular. The goal of this project is to investigate and assess the ease of use of the CONVIVO FDA cleared system in discriminating healthy and abnormal tissues during in vivo use on the brain during neurosurgery in 30 patients with a working diagnosis of intrinsic brain tumors.
Detailed description
During surgery for the removal of brain tumors, frozen-section biopsies are routinely taken intraoperatively to help the surgeon to distinguish abnormal tissue areas from normal tissue, and to assess and guide the extent of tumor or mass resection. Frozen-section analysis is time-consuming and freezing may produce architectural artifacts in the tissue sample that are difficult to interpret. As well, some tumors are heterogeneous in cell composition, so a tissue biopsy in one area may not represent the entire tumor mass. Biopsies acquired at the border regions or margins of the surgical resection are especially crucial, because it is at those regions where decisions based on tissue analysis guide the surgeon to further extend the resection where there is more tumor tissue remaining, or halt the resection for various reasons. In practice, the number of biopsies that can be taken during surgery is limited, because the acquisition procedure is time consuming. A technology which enables intraoperative real-time visualization of tissue at cellular resolution could provide a significant advantage in defining abnormal tissue margins. Such a technology could be used to identify abnormal tissue or at a minimum could screen for the most relevant areas from which formal biopsies should be acquired. It also could help to make the process of taking biopsies more efficient, so that the total number of biopsies needed can be reduced, thus increasing positive biopsy yield. This effort is a follow-up to a previous confocal endomicroscopy in vivo study conducted at the Barrow Neurological Institute in Phoenix. Based on this work, the upgraded version of the confocal laser endomicroscopy (CONVIVO) received 510k clearance from FDA. This study aims to evaluate the learning curve associated with the intraoperative imaging of tissue microstructure and microvasculature during neurosurgical procedures using fluorescein as a contrast agent for 30 patients undergoing surgery for a working diagnosis of brain tumor. The procedure involves a small microscope (about the size of a neurosurgical suction device) which is placed gently into contact with the tissue, providing significant in vivo magnification on a scale similar to that obtained by the pathology laboratory microscope. The focus of this study will be to examine the quality of images taken from the tumor core and tumor margin, and assess the time required for both neurosurgeon and pathologist to agree on a good image. A good image is clear, has well-defined structures, very few artifacts, and is comparable to a standard frozen section biopsy in its diagnostic potential.
Study design
- Primary purpose
- Device feasibility
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Model description
- This study is single cohort and plans to enroll a total of 30 patients.
Who may qualify
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (4 listed)
- . The patient is suffering from an intracranial lesion requiring surgery:
- Patients undergoing neurosurgical resection for intrinsic presumably high grade, invasive tumors.
- Patients undergoing neurosurgical resection for other brain tumors,.
- All patient groups will only be comprised of elective surgical patients who have signed the informed consent prior to use
Key exclusion criteria (6 listed)
- History of hypersensitivity to fluorescein
- History of allergy or bronchial asthma
- Renal failure - Children (patients less than 18 years of age)
- Pregnant women
- Breast feeding women
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| CONVIVOAny clinical adverse event (AE), laboratory abnormality, or other medical condition or situation occurs such that continued participation in the study would not be in the best interest of the participant. The participant meets an exclusion criterion (either newly developed or not previously recognized) that precludes further study participation. | Device | – |
Primary outcome
Investigate ease of CONVIVO.
Time frame: one year
The outcome is to investigate and assess the ease of use of the CONVIVO FDA cleared system in discriminating healthy and abnormal tissues during in vivo use on the brain during neurosurgery in 30 patients with a working diagnosis of intrinsic brain tumors.
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 4 Jun 2026.
- BackgroundAcerbi, F., Pollo, B., De Laurentis, C., Restelli, F., Falco, J., Vetrano, I. G., ... & DiMeco, F. (2020). Ex Vivo Fluorescein-Assisted Confocal Laser Endomicroscopy (CONVIVO® System) in Patients With Glioblastoma: Results From a Prospective Study. Frontiers in Oncology, 10. Belykh, E., Miller, E. J., Patel, A. A., Yazdanabadi, M. I., Martirosyan, N. L., Yağmurlu, K., ... & Preul, M. C. (2018). Diagnostic accuracy of a confocal laser endomicroscope for in vivo differentiation between normal injured and tumor tissue during fluorescein-guided glioma resection. World neurosurgery, 115, e337-e348
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing CONVIVO in people with Brain Tumor, run by Northwell Health at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 4 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Betsy Moclair (5162537753, bmoclair@northwell.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Investigate ease of CONVIVO. (time frame: one year). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT06087393, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 4 Jun 2026.