The Role of Large Artery Plaque Imaging Features in Predicting Inflammation and Cognition
Primary Purpose
Cognitive Impairment, Carotid Artery Plaque, Inflammation
Status
Unknown status
Phase
Phase 2
Locations
United States
Study Type
Interventional
Intervention
Imaging with flutemetamol F 18 PET/CT
Sponsored by
About this trial
This is an interventional diagnostic trial for Cognitive Impairment focused on measuring Carotid artery, MRI, PET, Intraplaque hemorrhage
Eligibility Criteria
Inclusion Criteria:
• Patients ≥18 years old and plans for carotid endarterectomy.
Exclusion Criteria:
- Patients with carotid occlusion will be excluded, due to one carotid contributing to both right and left brain blood supply.
- Other known sources of cardioembolism, including atrial fibrillation, mechanical heart valve, left atrial or ventricular thrombus or intracardiac mass, endocarditis, EF <30%
- Known stroke mimics including multiple sclerosis or brain tumor
- MRI contraindications per ACR guidelines, including patients with pacemakers, renal failure with eGFR<30 ml/min/1.73m2, and contrast allergy
- [18F]Flutemetamol contraindications per manufacturer guidelines, including patients with prior reactions
- Known stage IV malignancy
- Pregnancy
Sites / Locations
- University of UtahRecruiting
- George E. Wahlen Department of Veterans Affairs Medical CenterRecruiting
Arms of the Study
Arm 1
Arm Type
Experimental
Arm Label
Carotid atherosclerosis group
Arm Description
This group includes all enrolled subjects (those with carotid disease and plans to undergo surgery).
Outcomes
Primary Outcome Measures
Carotid intraplaque hemorrhage correlation with carotid plaque inflammation on immunohistochemistry.
Carotid plaque inflammation will be calculated with quantitative immunohistochemistry and correlated with intraplaque hemorrhage while controlling for confounders.
Carotid MRI-detected intraplaque hemorrhage and prediction of brain inflammation on PET/CT.
Outcome 2. The primary outcome, brain inflammation will be compared in carotid intraplaque hemorrhage positive and negative sides, controlling for confounders including stenosis and perfusion.
Preoperative MRI-detected carotid intraplaque hemorrhage and prediction of cognitive improvement after endarterectomy.
Outcome 3. The primary outcome, difference in cognitive score will be compared in carotid intraplaque hemorrhage positive and negative patients, controlling for stenosis, perfusion and ischemic symptoms.
Secondary Outcome Measures
Full Information
NCT ID
NCT03068442
First Posted
February 22, 2017
Last Updated
April 26, 2021
Sponsor
Scott Mcnally
Collaborators
American Heart Association
1. Study Identification
Unique Protocol Identification Number
NCT03068442
Brief Title
The Role of Large Artery Plaque Imaging Features in Predicting Inflammation and Cognition
Official Title
Amyloid Deposition and Preexisting Vulnerable Carotid Plaque Features Predicting Cognitive Improvement After Surgery
Study Type
Interventional
2. Study Status
Record Verification Date
April 2021
Overall Recruitment Status
Unknown status
Study Start Date
February 17, 2017 (Actual)
Primary Completion Date
September 10, 2021 (Anticipated)
Study Completion Date
September 10, 2021 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor-Investigator
Name of the Sponsor
Scott Mcnally
Collaborators
American Heart Association
4. Oversight
Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
Yes
5. Study Description
Brief Summary
The invesigators propose a clinical study on patients undergoing carotid surgery (endarterectomy). The invesigators will determine carotid artery imaging features associated with (1) vessel wall inflammation, (2) downstream brain inflammation, and (3) cognitive benefit from surgery. This project will uncover links between inflamed carotid plaque and downstream brain inflammation. The invesigators will also determine carotid plaque imaging features predicting cognitive benefit from carotid surgery.
Detailed Description
This research is directed at a major stroke source, the carotid artery, a major vessel that supplies blood to the brain. It has long been known that carotid narrowing is an important stroke risk factor. However, many patients with narrow carotids do not have strokes, and many patients with seemingly normal carotids have strokes. MRI research now suggests that the carotid wall itself is the stroke source. Using carotid MRI, clinicians can identify previously invisible markers of unstable carotid plaque, including carotid wall bleeds (intraplaque hemorrhage). The working hypothesis is that patients with these unstable carotid plaques may have higher inflammation in both their carotid arteries and brain. This inflammation has been implicated in other diseases, including dementia.
Carotid wall bleeds can easily be seen with carotid MRI, but are often invisible on ultrasound and CT scans. By using MRI, the invesigators have found that this silent killer is an important stroke risk factor even without carotid narrowing. Now that imaging can detect carotid wall bleeds, where do the bleeds come from? Recent research points to inflammation within the carotid wall. The invesigators plan to use histology to detect this inflammation in the vessel wall. Another question is, does inflammation in the carotid wall lead to inflammation in the brain? Using PET scans, the invesigators plan to determine whether inflammation in the brain is linked to carotid disease. Lastly, the invesigators hope to find out if carotid wall inflammation contributes to memory loss and if surgery is beneficial in these patients.
The invesigators hope to detect this inflammation in the vessel wall and brain before patients develop stroke, memory loss and dementia. This will be of huge benefit not only in the detection of diseases, but would also allow clinicians to monitor treatment effect on both carotid disease and brain inflammation. The invesigators also hope to use these tools to detect early treatment response. This research will accelerate the pace of future clinical trials to bring important new medications to patients sooner.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Cognitive Impairment, Carotid Artery Plaque, Inflammation
Keywords
Carotid artery, MRI, PET, Intraplaque hemorrhage
7. Study Design
Primary Purpose
Diagnostic
Study Phase
Phase 2
Interventional Study Model
Single Group Assignment
Model Description
This is a diagnostic-interventional cohort study in patients undergoing carotid endarterectomy for atherosclerotic disease.
Masking
None (Open Label)
Allocation
N/A
Enrollment
45 (Anticipated)
8. Arms, Groups, and Interventions
Arm Title
Carotid atherosclerosis group
Arm Type
Experimental
Arm Description
This group includes all enrolled subjects (those with carotid disease and plans to undergo surgery).
Intervention Type
Drug
Intervention Name(s)
Imaging with flutemetamol F 18 PET/CT
Intervention Description
All subjects will undergo diagnostic imaging as the intervention. This imaging will be with flutemetamol F 18 PET/CT
Primary Outcome Measure Information:
Title
Carotid intraplaque hemorrhage correlation with carotid plaque inflammation on immunohistochemistry.
Description
Carotid plaque inflammation will be calculated with quantitative immunohistochemistry and correlated with intraplaque hemorrhage while controlling for confounders.
Time Frame
baseline
Title
Carotid MRI-detected intraplaque hemorrhage and prediction of brain inflammation on PET/CT.
Description
Outcome 2. The primary outcome, brain inflammation will be compared in carotid intraplaque hemorrhage positive and negative sides, controlling for confounders including stenosis and perfusion.
Time Frame
baseline
Title
Preoperative MRI-detected carotid intraplaque hemorrhage and prediction of cognitive improvement after endarterectomy.
Description
Outcome 3. The primary outcome, difference in cognitive score will be compared in carotid intraplaque hemorrhage positive and negative patients, controlling for stenosis, perfusion and ischemic symptoms.
Time Frame
Change from baseline at 3 month followup
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
• Patients ≥18 years old and plans for carotid endarterectomy.
Exclusion Criteria:
Patients with carotid occlusion will be excluded, due to one carotid contributing to both right and left brain blood supply.
Other known sources of cardioembolism, including atrial fibrillation, mechanical heart valve, left atrial or ventricular thrombus or intracardiac mass, endocarditis, EF <30%
Known stroke mimics including multiple sclerosis or brain tumor
MRI contraindications per ACR guidelines, including patients with pacemakers, renal failure with eGFR<30 ml/min/1.73m2, and contrast allergy
[18F]Flutemetamol contraindications per manufacturer guidelines, including patients with prior reactions
Known stage IV malignancy
Pregnancy
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Collin Arsenault
Phone
801-585-1737
Email
Collin.Arsenault@hsc.utah.edu
First Name & Middle Initial & Last Name or Official Title & Degree
Suyi Nui
Phone
801-585-1021
Email
SUYI.NIU@hsc.utah.edu
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Joseph S McNally, MD, PhD
Organizational Affiliation
University of Utah
Official's Role
Principal Investigator
Facility Information:
Facility Name
University of Utah
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84132
Country
United States
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Collin Arsenault
Phone
801-585-1737
Email
Collin.Arsenault@hsc.utah.edu
First Name & Middle Initial & Last Name & Degree
Suyi Nui
Phone
801-585-1021
Email
SUYI.NIU@hsc.utah.edu
First Name & Middle Initial & Last Name & Degree
Joseph S McNally, MD, PhD
Facility Name
George E. Wahlen Department of Veterans Affairs Medical Center
City
Salt Lake City
State/Province
Utah
ZIP/Postal Code
84148
Country
United States
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Collin Arsenault
Phone
801-585-1737
Email
Collin.Arsenault@hsc.utah.edu
First Name & Middle Initial & Last Name & Degree
Suyi Nui
Phone
801-585-1021
Email
SUYI.NIU@hsc.utah.edu
First Name & Middle Initial & Last Name & Degree
Joseph S McNally, MD, PhD
12. IPD Sharing Statement
Plan to Share IPD
Yes
IPD Sharing Plan Description
All data will be made freely and publicly available on ClinicalTrials.gov within 12 months of the end of the funding period (and any no-cost extension).
Carotid intraplaque hemorrhage
Carotid plaque inflammation on histology
Age, stroke status, male sex, smoking and vitamin D level
Statin, antiplatelet, or antihypertensive use
Ipsilateral brain inflammation measured by PET
Carotid stenosis and perfusion parameters
Cognitive score
Learn more about this trial
The Role of Large Artery Plaque Imaging Features in Predicting Inflammation and Cognition
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