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[F-18] RGD-K5 Positron Emission Tomography (PET) in Participants With Carotid Artery Stenosis

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01602471
Recruitment Status : Terminated (Sponsor decided to develop the product in collaboration)
First Posted : May 21, 2012
Results First Posted : September 27, 2013
Last Update Posted : September 27, 2013
Information provided by (Responsible Party):
Siemens Molecular Imaging

Brief Summary:
This trial will be the first trial for the Investigation Product (IP), [F-18]RGD-K5 for carotid plaque imaging and will be conducted as a Phase II trial since this compound has already been tested in humans for phase I and phase II imaging. All study results will be evaluated and analyzed in order to consider the design for future clinical trials.

Condition or disease Intervention/treatment Phase
Carotid Stenosis Drug: [F-18]RDG-K5 Phase 2

Detailed Description:

This investigation will be conducted as a Phase II, open-label, single-center, non-randomized study. The study is planned to be conducted at one Investigative site in the United States. The information collected under this exploratory, Phase II study will not be used for diagnostic purposes, to assess the participant's response to therapy, or for clinical management of the participant. This will be a pilot prospective cohort study where the increased expression of integrin may be seen on the F-18 RGD-K5 PET imaging scans looking at carotid plaque in participants with carotid artery stenosis.

Each completed study participant will undergo one to three visits, including one eligibility study visit, the Computed Tomography (CT) angiogram of the carotid visit (if necessary), the [F-18] RGD-K5 PET imaging visit, and a 24 hour follow up phone call or visit.

Procedures: Informed consent (ICF), eligibility blood labs, collection of demographic information and medical history, physical examination, vital signs, 12-lead Electrocardiograms (ECGs), dosing with [F-18]RGD-K5, PET imaging scan, 24 hour follow up to collect adverse events, and plaque immunohistochemical characterization after Carotid Endarterectomy (CEA).

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 5 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Official Title: An Exploratory, Phase II, Open Label, Single-Center, Non-Randomized Study Of [F-18] RGD-K5 Positron Emission Tomography (PET) In Participants With Carotid Artery Stenosis
Study Start Date : May 2012
Actual Primary Completion Date : March 2013
Actual Study Completion Date : March 2013

Arm Intervention/treatment
Experimental: [F-18]RDG-K5
[F-18]RDG-K5 was administred and PET scan performed
Drug: [F-18]RDG-K5
Approximately fifteen (15) patients with carotid artery stenosis > 69% will undergo an endarterectomy and will be imaged under PET/CT with [F-18]RGD-K5
Other Names:
  • RGD-K5
  • K5
  • [F-18]RGD-K5 PET scan
  • RGD-K5 PET scan
  • K5 PET scan

Primary Outcome Measures :
  1. [F-18]RDG-K5 Uptake by Carotid Plaque on PET Scan [ Time Frame: Participants will be followed for an average of 6 weeks ]
    Based on the small sample size and lack of IHC analyses, no efficacy conclusions can be drawn from this study.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Participant is a female or male of any race / ethnicity >18 years old at the time of the investigational product administration
  • Participant or participant's legally acceptable representative provides written informed consent
  • Participant is capable of complying with study procedures
  • Participant has known carotid artery stenosis of >69% luminal diameter as based on carotid ultrasound and who is deemed to be a surgical candidate for endarterectomy as determined by the vascular surgeon
  • Participant has had a carotid ultrasound and the report is available for collection
  • Participant has had or is scheduled to have a carotid CT angiogram for plaque localization within 30 days of signing ICF (or else scheduled Carotid CT angiogram) CTA must be performed on a separate day and prior to the investigational PET procedure)
  • Participant has consented to have an endarterectomy
  • Participant will be scheduled for an investigational [F-18]RGD-K5 PET/CT scan within 4 weeks prior to endarterectomy
  • Participant must have renal function values as defined by laboratory results within the following ranges:
  • Serum creatinine ≤ 1.5 mg/dL
  • Estimated glomerular filtration rate (eGFR) ≥ 45mL/min

Exclusion Criteria:

  • Participant is nursing
  • Participant is pregnant
  • Participant has been involved in an investigative, radioactive research procedure within the past 14 days
  • Participant has any other condition or personal circumstance that, in the judgment of the investigator, might interfere with the collection of complete data or data quality
  • Participant has a history or current evidence of any condition, therapy, lab abnormality that, in the opinion of the study investigator or treating physicians might confound the results of the study or poses an additional risk to the participants by their participation in the study

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01602471

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United States, Ohio
Cleveland Clinic
Cleveland, Ohio, United States, 44195
Sponsors and Collaborators
Siemens Molecular Imaging
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Principal Investigator: Balaji Tamarappoo, MD, PhD The Cleveland Clinic
Study Director: Edward Aten, MD President, Certus International
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Responsible Party: Siemens Molecular Imaging Identifier: NCT01602471    
Other Study ID Numbers: K5-C200
First Posted: May 21, 2012    Key Record Dates
Results First Posted: September 27, 2013
Last Update Posted: September 27, 2013
Last Verified: July 2013
Keywords provided by Siemens Molecular Imaging:
Carotid CT Angiogram
Additional relevant MeSH terms:
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Carotid Stenosis
Constriction, Pathologic
Pathological Conditions, Anatomical
Carotid Artery Diseases
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Arterial Occlusive Diseases
Vascular Diseases
Cardiovascular Diseases