CCR2 AAA Pilot Study

April 9, 2022 updated by: Washington University School of Medicine

Targeted Molecular Probe for Abdominal Aortic Aneurysm Imaging and Therapy

The purpose of this research study is to look at whether an investigational imaging agent, 64Cu-DOTA-ECL1i, used during Positron Emission Tomography (PET)/ Computed Tomography (CT) scanning, can help to identify conditions that place patients at an increased risk for AAA rupture. The study is also looking more closely at cellular, molecular and inflammatory properties of the aortic wall. Having the ability to identify markers that predict AAA progression/expansion and risk for rupture could allow the physician to manage patients in a more individualized, personal way.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Abdominal aortic aneurysm (AAA) is a life-threatening degenerative vascular disease characterized by transmural aortic macrophage infiltration, elastin degradation, and reduction of smooth muscle cell content. AAAs occurs later in life and are especially prevalent in men over the age of 65. Patients typically remain asymptomatic until rupture, which is associated with high mortality. Currently, surgical repair is the only approach for AAA treatment, and there is no pharmacological intervention. Clinically, ultrasound and computed tomography measurement of aneurysm diameter represents the mainstay of management and the principal determinant of timing for elective surgical repair. However, this anatomy-based approach fails to provide useful information about the cellular and molecular processes associated with aneurysm expansion and rupture. Therefore, developing translatable molecular biomarkers, specifically expressed by aneurysms, is necessary to determine associated status and progression, capture the risk of rupture, and deliver personalized treatment.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
1

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Early Phase 1

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

  • United States
    • Missouri
      • Saint Louis, Missouri, United States, 63110
        • Washington University School of Medicine

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

45 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Non-Aneurysmal Patients, (Aim 2A, n=3)

Inclusion Criteria:

- Patients with aortoiliac occlusive disease causing lifestyle limiting claudication, rest pain, and/or tissue loss that requires aortofemoral bypass

Exclusion Criteria:

- Patients with aortoiliac occlusive disease, we will apply the same exclusion criteria as AAA patients.

Abdominal Aortic Aneurysm (AAA) Patients, (Aim 2B, n=5)

Inclusion Criteria:

  • We will recruit asymptomatic patients with known AAAs by ultrasound, Doppler, and CT (men ≥ 5.5 cm, women ≥ 5.0cm);
  • Both men and women, between the ages of 45 -75;
  • With or without active tobacco use;

Exclusion Criteria:

  • Inability to receive and sign informed consent;
  • Has a history of hypersensitivity to contrast agent, Iopamidol (Isovue)
  • Patients with Stage ≥ 4 chronic renal failure (calculated by modification of diet in renal disease eGFR equation [to minimize confounding imaging variables]);
  • Inability to tolerate 60 minutes in a supine position with arms down at sides, as necessary for PET/CT;
  • Severe claustrophobia;
  • Positive pregnancy test or lactating;
  • Has a history of hypersensitivity to 64Cu-DOTA-ECL1i or any of its excipients;
  • Any condition that, in the opinion of the Sponsor-Investigator or designee could increase risk to the participant, limit the participant's ability to tolerate the research procedures or interfere with collection of the data such as: Symptomatic/recently treated coronary disease, cancer requiring oncologic management, or autoimmune/inflammatory diseases (e.g., rheumatoid arthritis or multiple sclerosis) that are known to have increased associated expression of CCR2.

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

  • Primary Purpose: Diagnostic
  • Allocation: Non-Randomized
  • Interventional Model: Factorial Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Active Comparator: AAA Group

Participants with AAA will undergo routine clinical evaluation of AAA including ultrasound and CT and scheduling of open surgical repair as directed by the treating physician. We will record age and tobacco use of participant. If participant has not had a renal function blood test performed within the past 90 days, we will draw approximately 2 teaspoons of blood for a creatinine test. We will also ask the participant's permission to use a contrast dye for the CT portion of the PET-CT scan. If the participant agrees we will additional questions to gauge eligibility to receive the contrast dye.

If available, we would like to collect any discarded AAA tissue from the surgical procedure. This discarded tissue will be kept as part of a Washington University vascular research repository. If the participant agrees to this there will be a separate consent form to sign allowing the collection of the leftover tissue along with some information about medical history.
Diagnostic test: AAA Group- PET-CT imaging with injection of 64Cu-DOTA-ECL1i
Patients from both genders, all ethnic groups, and between the ages of 45 and 75 will be considered for recruitment. We will recruit patients who have evidence of abdominal aortic aneurysm (AAA) as our study patient cohort. Patients with Abdominal aortic aneurysm (AAA) (n=5) will be enrolled in Aim 2B and undergo Cu-64 DOTA-ECL1i PET/CT and contrast-enhanced CT angiography between 7-14 days of their scheduled elective open repair surgery.
Active Comparator: Aortoiliac Occlusive Disease Group
Participants with non-aneurysmal aortoiliac occlusive disease, will be eligible for the study based on lifestyle limiting claudication (lack of blood flow to muscles causing cramping), pain in the feet or toes at rest, and/or tissue loss (leg or foot ulcers that don't heal or gangrene) that requires aortofemoral bypass. The aortofemoral bypass is not part of this research study.
Diagnostic test: Aortoiliac Occlusive Disease Group - PET-CT imaging with injection of 64Cu-DOTA-ECL1i
Patients from both genders, all ethnic groups, and between the ages of 45 and 75 will be considered for recruitment. We will recruit patients who have evidence of abdominal aortic aneurysm (AAA) as our study patient cohort. Patients with non-aneurysmal, atherosclerotic aortoiliac occlusive disease (n=3) will be enrolled in Aim 2A and undergo Cu-64 DOTA-ECL1i PET/CT.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
First in-person CCR2 molecular imaging using 64Cu-DOTA-ECL1i PET/CT in AAA patient
Time Frame: 1-2 weeks
Determine the background retention of 64Cu-DOTA-ECL1i in the abdominal aorta of patients with non-aneurysmal, atherosclerotic occlusive disease.
1-2 weeks
Perform 64Cu-DOTA-ECL1i PET/CT in AAA patients and correlate imaging readouts with tissue inflammatory biomarkers in patients undergoing open repair
Time Frame: 1-2 weeks prior to surgery
Patients undergoing open AAA repair will be scheduled for PET/CT imaging at 1-2 weeks prior to surgery. This will be first-in-patient molecular imaging using CCR2 targeted 64Cu-DOTA-ECL1i in AAA patients undergoing open repair. The surgically removed aneurysmal tissue will be collected and processed for a complete characterization.
1-2 weeks prior to surgery

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Washington University School of Medicine

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Mohamed M. Zayed, MD, Washington University School of Medicine

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 (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 7, 2020

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 4, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 4, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 5, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 12, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 19, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 15, 2022

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 9, 2022

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2022

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 202004104

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

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