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TerminatedNCT01602471Updated Sep 27, 2013Results posted

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

A Phase 2 interventional study of [F-18]RDG-K5 in Carotid Stenosis, sponsored by Siemens Molecular Imaging. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2013-09-27.

Sponsored by Siemens Molecular Imaging · Phase 2 and Interventional

Why this study was terminated
Sponsor decided to develop the product in collaboration
Phase
Phase 2
Study type
Interventional
Enrollment
5
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study 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.

Read the 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).

02

Conditions studied

  • Carotid Stenosis

Keywords

  • Endarterectomy
  • K5-C200
  • RGD-K5
  • angiogenesis
  • Carotid CT Angiogram
03

In context

Carotid Stenosis

339 studies on the registry are indexed under Carotid Stenosis; 81 are open to participants now.

This study's enrollment of 5 is below the median of 106 across 182 interventional studies indexed under Carotid Stenosis.

Browse Carotid Stenosis studies →

Lead sponsor

Siemens Molecular Imaging is the lead sponsor of 12 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
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

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
05

Study design

Phase
Phase 2
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
5 participants (actual)

Study arms

  • Experimental
    [F-18]RDG-K5

    \[F-18\]RDG-K5 was administred and PET scan performed

    Drug: [F-18]RDG-K5

Interventions

  • 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

    Also known as: RGD-K5, K5, [F-18]RGD-K5 PET scan, RGD-K5 PET scan, K5 PET scan

06

What researchers measure

Primary outcomes

  1. [F-18]RDG-K5 Uptake by Carotid Plaque on PET Scan

    Based on the small sample size and lack of IHC analyses, no efficacy conclusions can be drawn from this study.

    Time frame: Participants will be followed for an average of 6 weeks

07

Results

Posted Sep 27, 2013

Participant flow

Five participants enrolled, four complete and one withdrawal prior to receiving the investigational product. Study was terminated early by the sponsor.

Participant flow — Overall Study
Milestone[F-18]RDG-K5
Started4
Completed4
Not completed0

Outcome measures

Primary[F-18]RDG-K5 Uptake by Carotid Plaque on PET Scan

Based on the small sample size and lack of IHC analyses, no efficacy conclusions can be drawn from this study.

Time frame:
Participants will be followed for an average of 6 weeks

No measurements were reported for this outcome.

Adverse events

Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
[F-18]RDG-K5—0/4 (0%)0/4 (0%)

Baseline characteristics

Five participants enrolled, four complete and one withdrawal prior to receiving the investigational prodcut. Study was terminated early by the sponsor.

Age, Categorical
Age, Categorical(Participants)[F-18]RDG-K5
<=18 years0
Between 18 and 65 years2
>=65 years2
Age Continuous
Age Continuous(years)[F-18]RDG-K5
Mean70.8 ± 10.1
Sex: Female, Male
Sex: Female, Male(Participants)[F-18]RDG-K5
Female0
Male4
Region of Enrollment
Region of Enrollment(participants)[F-18]RDG-K5
United States4
08

Study locations

1 site
  • Cleveland Clinic
    Cleveland, Ohio 44195, United States
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 27, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01602471
Lead sponsor
Siemens Molecular Imaging
Responsible party
Sponsor
First posted
May 21, 2012
Start date
May 2012
Primary completion
Mar 2013
Completion
Mar 2013
Results posted
Sep 27, 2013
Last update
Sep 27, 2013

Study contacts

Balaji Tamarappoo, MD, PhD
principal investigator · The Cleveland Clinic
Edward Aten, MD
study director · President, Certus International

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Jul 2013. You cannot join it, but the record below documents what was studied.

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