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Peripheral Vascular DiseasesZilver PTXNCT00120406

Evaluation of the Zilver PTX Drug-Eluting Stent in the Above-the-Knee Femoropopliteal Artery

A study testing Zilver® PTX™ Drug Eluting Vascular Stent and Angioplasty in people with Peripheral Vascular Diseases, run by Cook Group Incorporated at 52 sites in 3 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
Search all trials

Trial summary

The Zilver® PTX™ Drug Eluting Vascular Stent is indicated for the treatment of symptomatic vascular disease of the above-the-knee femoropopliteal artery (ranging from 4 mm to 9 mm in reference vessel diameter) for lesions up to 7 cm long. The clinical trial is stratified by lesion length. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Peripheral Vascular Diseases
What is being tested?
Zilver® PTX™ Drug Eluting Vascular Stent and Angioplasty
Could I receive a placebo?
No, everyone receives an active treatment
How many people
474 participants
Where
52 sitesin 3 countries
Study dates
Mar 2005to Feb 2014
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patient has signed and dated the informed consent.
  • Patient has up to 2 documented stenotic or occluded atherosclerotic lesions (up ro 14 cm long) of the above-the-knee femoropopliteal artery, up to one in each limb, that meet all of the inclusion criteria and none of the exclusion criteria.
  • Patient has a de novo or restenotic lesion(s) with >50% stenosis documented angiographically and no prior stent in the target lesion.
  • Patient has symptoms of peripheral arterial disease classified as Rutherford Category 2 or greater.
  • Patient has a resting Ankle Brachial Index (ABI) <0.9 or an abnormal exercise ABI if resting ABI is normal. Patient with incompressible arteries (ABI >1.2) must have a Toe Brachial Index (TBI) <0.8.
  • Patient agrees to return for a clinical status assessment and duplex ultrasound at 6 months, 12 months, and at 2, 3, 4, and 5 years.
Show all 9Show fewer
  • Patient agrees to return for x-rays at 6 and 12 months.
  • Patient agrees to return for angiography at 12 months.
  • Patient agrees to be contacted by telephone at 1, 3, 9, and 18 months to assess clinical status.

Who cannot join

  • Patient is pregnant or breast-feeding.
  • Patient is simultaneously participating in another investigational drug or device study.
  • Patient has significant stenosis or occlusion of inflow tract not successfully treated before this procedure.
  • Patient has any planned surgical or interventional procedure within 30 days after the study procedure.
  • Patient has had previous stenting of target vessel.
  • Patient in whom antiplatelet and/or anticoagulant therapy is contraindicated.
Show all 10Show fewer
  • Patient has known hypersensitivity or contraindication to aspirin, antiplatelet medication, contrast dye, paclitaxel or nitinol and, in the opinion of the investigator, cannot be adequately premedicated.
  • Patient lacks at least one patent vessel of runoff with <50% stenosis throughout its course.
  • Patient has untreated angiographically-evident thrombus in the target lesion.
  • [Additional criteria may apply.]

Trial locations and contacts

52 sites in 3 countries.

52 sites in 3 countries

United States44 sites
  • Piedmont Hospital

    Atlanta, Georgia, 30309

  • JFK Memorial Center

    Atlantis, Florida, 33462

  • Bayview Medical Center

    Baltimore, Maryland, 21224

  • Massachusetts General Hospital

    Boston, Massachusetts, 02114

  • Beth Israel Deaconess Medical Center

    Boston, Massachusetts, 02215

  • Carolinas Medical Center

    Charlotte, North Carolina, 28203

  • University of Virginia Medical Center

    Charlottesville, Virginia, 22908

  • Good Samaritan Hospital

    Cincinnati, Ohio, 45220

  • Cleveland Clinic

    Cleveland, Ohio, 44195

  • South Carolina Heart Center

    Columbia, South Carolina, 92904

  • MidWest Cardiology Research Foundation

    Columbus, Ohio, 43214

  • EMH Regional Medical Center

    Elyria, Ohio, 44035

  • Michigan Vascular Research Center

    Flint, Michigan, 48507

  • University of Florida

    Gainesville, Florida, 32610

  • Greenville Memorial Hospital

    Greenville, South Carolina, 29605

  • Pinnacle Health Harrisburg

    Harrisburg, Pennsylvania, 17110

  • Methodist Hospital

    Houston, Texas, 77030

  • St. Vincent Hospital

    Indianapolis, Indiana, 46260

  • The Care Group

    Indianapolis, Indiana, 46290

  • Memorial -- Jacksonville

    Jacksonville, Florida, 32216

  • St. Luke's Hospital Kansas

    Kansas City, Missouri, 64111

  • Christus St. Patrick Hospital

    Lake Charles, Louisiana, 70601

  • Baptist Cardiac & Vascular Institute

    Miami, Florida, 33176

  • St. Luke's Hospital

    Milwaukee, Wisconsin, 53215

  • El Camino Hospital

    Mountain View, California, 94040

  • LDS

    Murray, Utah, 84107

  • Ochsner Clinic Foundation

    New Orleans, Louisiana, 70121

  • NYU Medical Center

    New York, New York, 10016

  • St. Luke's Roosevelt Hospital Center

    New York, New York, 10025

  • New York Presbyterian Hospital

    New York, New York, 10032

  • Lenox Hill

    New York, New York, 10075

  • Tri-City Medical Center

    Oceanside, California, 92056

  • Orlando Regional Medical Center

    Orlando, Florida, 32806

  • OSF St. Francis Medical Center

    Peoria, Illinois, 61637

  • Hospital of the University of Pennsylvania

    Philadelphia, Pennsylvania, 19104

  • Western Pennsylvania Hospital

    Pittsburgh, Pennsylvania, 15224

  • Mayo Clinic

    Rochester, Minnesota, 55905

  • William Beaumont

    Royal Oak, Michigan, 48073

  • Peripheral Vascular Associates (PVA)

    San Antonio, Texas, 78229

  • Prairie Heart

    Springfield, Illinois, 62702

  • Stanford University Hospital and Clinics

    Stanford, California, 94305

  • Montefiore Medical Center

    The Bronx, New York, 10467

  • University of Toledo University Medical Center

    Toledo, Ohio, 43614

  • Washington Hospital Center

    Washington D.C., District of Columbia, 20010

Other trials in United States

Germany4 sites
  • Herz-Zentrum

    Bad Krozingen, 79189

  • Gemeinschaftspraxis

    Leipzig, 04177

  • Heart Center Leipzig, Angiology

    Leipzig, 04289

  • Universitatsklinikum Magdeburg

    Magdeburg, 39120

Other trials in Germany

Japan4 sites
  • Kokura Memorial Hospital

    Kitakyushu, Fukuoka, 802-8555

  • Kyoto University Hospital

    Kyoto, 606-8507

  • Nara Medical University

    Nara, 634-8522

  • The Jikei University Hospital

    Nishi-Shinbashi, Minato-ku

Other trials in Japan

About this study

The Zilver® PTX™ Drug Eluting Vascular Stent is indicated for the treatment of symptomatic vascular disease of the above-the-knee femoropopliteal artery (ranging from 4 mm to 9 mm in reference vessel diameter) for lesions up to 7 cm long. The clinical trial is stratified by lesion length. The trial will be conducted in 2 phases, with Phase 1 enrolling patients with lesions less than 7 cm long. Phase 2 of the trial will include longer lesions (up to 14 cm long) and will be initiated upon approval by the Food and Drug Administration (FDA).

Read the detailed description

The Zilver® PTX™ Drug Eluting Vascular Stent is indicated for the treatment of symptomatic vascular disease of the above-the-knee femoropopliteal artery (ranging from 4 mm to 9 mm in reference vessel diameter) for lesions up to 7 cm long. The above-the-knee femoropopliteal artery is defined as the superficial femoral artery (SFA) and the region of the popliteal artery above the plane of the femoral epicondyles. The clinical trial is stratified by lesion length. The trial will be conducted in 2 phases, with Phase 1 enrolling patients with lesions less than 7 cm long. Phase 2 of the trial will include longer lesions (up to 14 cm long) and will be initiated upon approval by the FDA.

This study will include 480 patients who will receive the Zilver PTX stent or Percutaneous transluminal angioplasty (PTA) at up to 100 investigational sites. Clinical data will be captured on paper and electronic case report forms. Analyses will include evaluation of the composite event-free survival rate and the patency rate at 6- and 12-month follow-up. Event-free survival is defined as freedom from the major adverse events of death, target lesion revascularization, target limb ischemia requiring surgical intervention (bypass or amputation of toe, foot or leg), surgical repair of the target vessel (e.g., dissection requiring surgery), and from worsening of the Rutherford classification by 2 classes or to class 5 or 6. Patency will be assessed by duplex ultrasound in all patients. Patients may be randomized to one or more of the following sub-studies: IVUS and angiography at 6 months (stent patients only), angiography at 12 months, pharmacokinetic substudy (Zilver PTX patients only), or ultrasound (PTA patients only). The trial also includes provisions for patients experiencing PTA failure. These patients may be randomized to receive a Zilver PTX stent or a bare Zilver stent.

Being tested
Zilver® PTX™ Drug Eluting Vascular Stent, Angioplasty
Keywords
Peripheral Arterial Disease (PAD), Peripheral Vascular Disease, Drug-Eluting Stent, Drug-Coated Stent
Medical subject headings
Peripheral Vascular Diseases, Peripheral Arterial Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Zilver® PTX™ Drug Eluting Vascular StentDevice

    Stenting of the Superfemoropopliteal Artery

  • AngioplastyProcedure or surgery

    Also called Balloon, PTA

    Angioplasty of the Superfemoropopliteal Artery

Study groups in NCT00120406
Study groupRoleWhat they receive
1ExperimentalZilver® PTX™ Drug Eluting Vascular Stent
Receives: Device: Zilver® PTX™ Drug Eluting Vascular Stent
2Active comparatorAngioplasty
Receives: Procedure: Angioplasty

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Event-free Survival Rate

    Event-free survival is defined as freedom from the major adverse events of death, target lesion revascularization, target limb ischemia requiring surgical intervention (bypass or amputation of toe, foot or leg), surgical repair of the target vessel (e.g., dissection requiring surgery), and from worsening of the Rutherford classification by 2 classes or to class 5 or 6.

    Participant flow is based on initial randomization of Zilver PTX or PTA (Percutaneous balloon angioplasty), and Event-free survival is based on Per-Protocol analysis where only patients who were treated according to their initial randomization are counted.

    Measured: 12 months

  2. Primary Patency

    Primary patency is defined as a Peak systolic velocity (PSV) ratio < 2.0 or angiographic percent diameter stenosis < 50%.

    Measured: 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted18 Jul 2005 (estimated)
  2. Study startMar 2005
  3. Primary completionOct 2009
  4. Study completionFeb 2014

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
474 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00120406
Sponsor's protocol ID
06-026
Other IDs
PS2
Acronym
Zilver PTX
Status last verified
Jul 2014
First submitted
11 Jul 2005
Last updated
11 Aug 2014
Data monitoring committee
Yes

Publications

  • Dake MD, Fanelli F, Lottes AE, O'Leary EE, Reichert H, Jiang X, Fu W, Iida O, Zen K, Schermerhorn M, Zeller T, Ansel GM. Prediction Model for Freedom from TLR from a Multi-study Analysis of Long-Term Results with the Zilver PTX Drug-Eluting Peripheral Stent. Cardiovasc Intervent Radiol. 2021 Feb;44(2):196-206. doi: 10.1007/s00270-020-02648-6. Epub 2020 Oct 6.

    PubMed 33025243
  • Dake MD, Ansel GM, Jaff MR, Ohki T, Saxon RR, Smouse HB, Machan LS, Snyder SA, O'Leary EE, Ragheb AO, Zeller T; Zilver PTX Investigators. Durable Clinical Effectiveness With Paclitaxel-Eluting Stents in the Femoropopliteal Artery: 5-Year Results of the Zilver PTX Randomized Trial. Circulation. 2016 Apr 12;133(15):1472-83; discussion 1483. doi: 10.1161/CIRCULATIONAHA.115.016900. Epub 2016 Mar 11.

    PubMed 26969758
  • Ohki T, Yokoi H, Kichikawa K, Kimura T, Snyder SA, Ragheb AO, O'Leary EE, Jaff MR, Ansel GM, Dake MD. Two-year analysis of the Japanese cohort from the Zilver PTX randomized controlled trial supports the validity of multinational clinical trials. J Endovasc Ther. 2014 Oct;21(5):644-53. doi: 10.1583/14-4753.1.

    PubMed 25290792
  • Dake MD, Ansel GM, Jaff MR, Ohki T, Saxon RR, Smouse HB, Snyder SA, O'Leary EE, Tepe G, Scheinert D, Zeller T; Zilver PTX Investigators. Sustained safety and effectiveness of paclitaxel-eluting stents for femoropopliteal lesions: 2-year follow-up from the Zilver PTX randomized and single-arm clinical studies. J Am Coll Cardiol. 2013 Jun 18;61(24):2417-2427. doi: 10.1016/j.jacc.2013.03.034. Epub 2013 Apr 10.

    PubMed 23583245
  • Dake MD, Ansel GM, Jaff MR, Ohki T, Saxon RR, Smouse HB, Zeller T, Roubin GS, Burket MW, Khatib Y, Snyder SA, Ragheb AO, White JK, Machan LS; Zilver PTX Investigators. Paclitaxel-eluting stents show superiority to balloon angioplasty and bare metal stents in femoropopliteal disease: twelve-month Zilver PTX randomized study results. Circ Cardiovasc Interv. 2011 Oct 1;4(5):495-504. doi: 10.1161/CIRCINTERVENTIONS.111.962324. Epub 2011 Sep 27.

    PubMed 21953370

Questions about this trial

What is this clinical trial studying?

A study testing Zilver® PTX™ Drug Eluting Vascular Stent and Angioplasty in people with Peripheral Vascular Diseases, run by Cook Group Incorporated at 52 sites in 3 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 9 inclusion and 10 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 11 Aug 2014. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 52 sites in United States, Germany, Japan. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 11 Aug 2014). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Event-free Survival Rate (time frame: 12 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00120406, which also lists 5 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Aug 2014.

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