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

This study has been terminated.
(Sponsor decided to develop the product in collaboration)
Information provided by (Responsible Party):
Siemens Molecular Imaging Identifier:
First received: September 14, 2011
Last updated: July 26, 2013
Last verified: July 2013
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 Intervention Phase
Carotid Stenosis Drug: [F-18]RDG-K5 Phase 2

Study Type: Interventional
Study Design: 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

Further study details as provided by Siemens Molecular Imaging:

Primary Outcome Measures:
  • [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.

Enrollment: 5
Study Start Date: May 2012
Study Completion Date: March 2013
Primary Completion Date: March 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
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

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).


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
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
  Contacts and Locations
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Please refer to this study by its identifier: NCT01602471

United States, Ohio
Cleveland Clinic
Cleveland, Ohio, United States, 44195
Sponsors and Collaborators
Siemens Molecular Imaging
Principal Investigator: Balaji Tamarappoo, MD, PhD The Cleveland Clinic
Study Director: Edward Aten, MD President, Certus International
  More Information

Responsible Party: Siemens Molecular Imaging Identifier: NCT01602471     History of Changes
Other Study ID Numbers: K5-C200
Study First Received: September 14, 2011
Results First Received: July 26, 2013
Last Updated: July 26, 2013

Keywords provided by Siemens Molecular Imaging:
Carotid CT Angiogram

Additional relevant MeSH terms:
Constriction, Pathologic
Carotid Stenosis
Pathological Conditions, Anatomical
Carotid Artery Diseases
Cerebrovascular Disorders
Brain Diseases
Central Nervous System Diseases
Nervous System Diseases
Arterial Occlusive Diseases
Vascular Diseases
Cardiovascular Diseases processed this record on September 21, 2017