- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01930968
Definity for Ultrasound of Intraocular Tumors
February 7, 2022 updated by: Hans Grossniklaus, MD, Emory University
Use of Definity® Contrast Agent for Ultrasound of Intraocular Tumors
The study will test the usefulness of a contrast agent to help image tumors in the eye.
In this study, patients with eye melanoma who are going to have their eye removed, will have their eye imaged by ultrasound (sound waves) before and after intravenous injection of microbubbles.
The pathology characteristics of the tumor in the removed eye will be compared with the images.
Study Overview
Status
Withdrawn
Conditions
Detailed Description
The investigators plan to enroll and image 10 patients with intraocular tumors who are going to undergo enucleation of their eye for the tumor.
Definity®, a perflutren containing microsphere manufactured by Lantheus Medical Imaging, Inc., is commercially available and FDA approved for cardiac imaging.
It is contraindicated for use in patients with pulmonary hypertension, unstable cardiopulmonary conditions, and cardiac shunts (right-to-left, bi-directional, or transient right-to left).
After informed consent is obtained, a cardiologist will examine the patient's history, perform lung and heart auscultation, and obtain a blood pressure in order to ensure the patient has no contraindications to using Definity®.
If there are no contraindications, routine ocular ultrasonography, both A and B scans, will be performed using an Ellex Eye Cubed ultrasound machine.
Definity® will be prepared per package instructions and the appropriate dose will be calculated.
If necessary, a second 10 microliter/kg dose may be give 30 minutes after the first IV injection.
A bubble test (intravenous small amount of Definity injected with cardiac echo) will be performed in the cardiology imaging suite, clinical building A, in order to ensure that the patient does not have a right to left shunt.
After that, Definity® will be administered as a slow IV bolus followed by a normal saline 10cc flush.
The ultrasonographer will continue the ocular B scan during administration of Definity®.
Vital signs will be obtained and documented at 30 minutes after administration of the last dose of Definity® and longer if needed.
Study Type
Observational
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Georgia
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Atlanta, Georgia, United States, 30322
- Emory Eye Center
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
20 years and older (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Sampling Method
Probability Sample
Study Population
Adults over 20 years old with intraocular tumors (melanoma, metastasis, retinal tumors) who are going to undergo enucleation diagnosed in the Emory Eye Center Ocular Oncology Service.
Patients will be assessed by a cardiologist or cardiology fellows.
Description
Inclusion Criteria:
- Adults 20 years old or over 18 years old with large uveal melanoma who are going to undergo enucleation
Exclusion Criteria:
- Patient with right-to-left, bi-direction, or transient right-to-left cardiac shunts
- Worsening of or clinically unstable congestive heart failure
- Acute myocardial infarctions or acute coronary syndromes
- Serious ventricular arrhythmias or high risk for arrhythmias, due to prolongation of the QT-interval (>60 msec)
- Respiratory failures marked by signs and symptoms of CO2 retention or hypoxemia
- Severe emphysema, pulmonary emboli, or other conditions that cause pulmonary hypertension due to compromised pulmonary-arterial vasculature
- Known hypersensitivity to perflutren (if the patient has been exposed to perflutren in the past and had an allergic reaction)
- Pregnancy or nursing mothers
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
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Ultrasound measurement
There is only 1 arm in this study.
The ocular tumors will be imaged using ultrasound and the contrast agent.
The patient's history will be noted, lung and heart auscultation will be performed, and blood pressure readings will be obtained to ensure the patient has no contraindications to using Definity®.
If there are no contraindications, routine ocular ultrasonography, both A and B scans, will be performed using an Ellex Eye Cubed ultrasound machine.
Definity® (the microbubble contrast agent) will be prepared per package instruction and the dose calculated according to the following formula: Patient weight (kg) X 10 microliters = Definity® dose.
If necessary, a second 10 microliter/kg dose may be given 30 minutes after the first IV injection.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Quantification of tumor perfusion and visualization of microvasculature using ultrasound enhanced images of intraocular tumors with microbubbles
Time Frame: Up to 2 years
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Ultrasound will be used to acoustically identify microbubbles in vascular channels in the intraocular tumors, including uveal melanoma, metastases and retinal tumors.
Blood vessels in the tumor and retina are identified after IV injection of Definity® microbubbles which is used as the ultrasound contrast agent.
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Up to 2 years
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Correlation between tumor vascularity by contrast enhanced ultrasoungraphy and histologically determined tumor vascular density
Time Frame: Up to 2 years
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The uptake of the Definity® microbubbles by the blood vessels in the tumor as determined by contrast enhanced ultrasoungraphy will be correlated with histologically determined tumor size and mean vascular density.
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Up to 2 years
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Correlation between tumor size by contrast enhanced ultrasoungraphy and histologically determined tumor size
Time Frame: Up to 2 years
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The tumor size as determined by contrast enhanced ultrasoungraphy will be correlated with histologically determined tumor size.
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Up to 2 years
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Anticipated)
February 1, 2022
Primary Completion (Anticipated)
June 1, 2022
Study Completion (Anticipated)
June 1, 2022
Study Registration Dates
First Submitted
February 28, 2013
First Submitted That Met QC Criteria
August 26, 2013
First Posted (Estimate)
August 29, 2013
Study Record Updates
Last Update Posted (Actual)
February 23, 2022
Last Update Submitted That Met QC Criteria
February 7, 2022
Last Verified
February 1, 2022
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB00039493
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
YES
IPD Plan Description
Once research is completed, results of the study will be published in a specialty journal
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
No
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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