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Sirolimus-Eluting Stents for Chronic Total Coronary Occlusions

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: November 24, 2005
Last Update Posted: March 6, 2007
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.
Cordis Corporation
Information provided by:
R&D Cardiologie
Primary intracoronary stent placement after successfully crossing chronic total occlusions (CTO) decreases the high restenosis rate at long-term follow-up compared with conventional balloon angioplasty. Several studies have shown the efficacy of sirolimus-eluting stents in selected groups of patients. Whether sirolimus-eluting stents are superior to bare metal stents in CTO is unknown. In this prospective randomized trial, bare metal stent implantation will be compared with sirolimus-eluting stent implantation for the treatment of chronic total coronary occlusions. A total of 200 patients will be followed up for 6, 12, and 24 months with angiographic follow-up at 6 months. Quantitative coronary analysis will be performed by an independent core laboratory. The primary end point is the binary angiographic restenosis and reocclusion rate at 6 month follow-up.

Condition Intervention Phase
Coronary Artery Disease Coronary Disease Coronary Stenosis Device: sirolimus-eluting stent Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single
Primary Purpose: Treatment
Official Title: Sirolimus-Eluting Stents for Chronic Total Coronary Occlusions: A Randomized Comparison of Bare Metal Stent Implantation With Sirolimus-Eluting Stent Implantation for the Treatment of Chronic Total Coronary Occlusions (PRISON II)

Resource links provided by NLM:

Further study details as provided by R&D Cardiologie:

Primary Outcome Measures:
  • The binary restenosis rate (defined as restenosis >50% on follow-up angiography) at six-month angiography

Secondary Outcome Measures:
  • A composite of: Major adverse cardiac events (death, myocardial infarction, and ischemia driven target lesion revascularization)
  • Target vessel failure (defined as a composite of death from cardiac causes, myocardial infarction, and ischemia-driven target-vessel revascularization) at 6 month
  • In-stent and in-segment minimal lumen diameter
  • Percentage in-stent and in-segment diameter stenosis
  • In-stent and in-segment late luminal loss at six months follow-up

Estimated Enrollment: 200
Study Start Date: January 2003
Estimated Study Completion Date: September 2006
Detailed Description:

Since data from the 2 landmark studies, the BENESTENT and STRESS studies, showed that coronary stenting significantly decreases restenosis as compared with conventional balloon angioplasty, this treatment modality has shown to be superior in an increasing number of indications. Percutaneous coronary intervention of chronic total occlusions (CTO), however, is still limited by high restenosis rates. Although coronary stenting using bare metal stents significantly decreases restenosis in CTO, restenosis rates still reach 32% to 55%.

In 200 patients with CTO randomized in the PRISON I study, we demonstrated a restenosis rate of 22% after bare metal stent implantation as compared with 33% after conventional balloon angioplasty. During the past few years, sirolimus (rapamycin), a cytostatic macrocyclic lactone with anti-inflammatory and antiproliferative properties, delivered from a polymer-encapsulated stent was shown to almost eliminate the risk of restenosis in selected groups of patients.

In this prospective, randomized, single-blind trial we enrolled 200 patients with chronic total occlusions: 100 were randomly assigned to receive bare metal BxVelocity™ stents, and 100 to receive sirolimus-eluting Cypher™ stents. The primary endpoint was angiographic binary restenosis rate at six months follow-up. Secondary endpoints were a composite of major adverse cardiac events, target vessel failure, in-stent and in-segment minimal lumen diameter, percentage diameter stenosis, and late luminal loss at six months follow-up. Clinical long-term follow-up will performed up till 24 months


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

Inclusion Criteria:

  • Estimated duration of the chronic total coronary occlusion of at least two weeks
  • Evidence of ischemia related to the target vessel (signs of ischemia during an abnormal exercise test, defined as ST depression of at least 1.0 mm that is horizontal or down-sloping or up-sloping ST depression of at least 2.0 mm or signs of ischemia found during nuclear imaging with exercise, dobutamine or adenosine).

Exclusion Criteria:

  • The lesion could not be crossed
  • The use of heparin, aspirin and clopidogrel was prohibited
  • Severe renal failure (creatinine>250µmol/L)
  • Patients were unwilling or unable to complete follow-up.
  Contacts and Locations
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 ClinicalTrials.gov identifier (NCT number): NCT00258596

Onze Lieve Vrouwe Gasthuis
Amsterdam, Netherlands, 1090HM
St Antonius Hospital
Nieuwegein, Netherlands, 3435CM
Sponsors and Collaborators
R&D Cardiologie
Cordis Corporation
Principal Investigator: Maarten J. Suttorp, MD, PhD St. Antonius Hospital
  More Information

Rahel BM, Suttorp MJ, Laarman GJ, Kiemeneij F, Bal ET, Rensing BJ, Ernst SM, ten Berg JM, Kelder JC, Plokker HW. Primary stenting of occluded native coronary arteries: final results of the Primary Stenting of Occluded Native Coronary Arteries (PRISON) study. Am Heart J. 2004 May;147(5):e22.
Suttorp MJ, Mast EG, Plokker HW, Kelder JC, Ernst SM, Bal ET. Primary coronary stenting after successful balloon angioplasty of chronic total occlusions: a single-center experience. Am Heart J. 1998 Feb;135(2 Pt 1):318-22.
Serruys PW, de Jaegere P, Kiemeneij F, Macaya C, Rutsch W, Heyndrickx G, Emanuelsson H, Marco J, Legrand V, Materne P, et al. A comparison of balloon-expandable-stent implantation with balloon angioplasty in patients with coronary artery disease. Benestent Study Group. N Engl J Med. 1994 Aug 25;331(8):489-95.
Fischman DL, Leon MB, Baim DS, Schatz RA, Savage MP, Penn I, Detre K, Veltri L, Ricci D, Nobuyoshi M, et al. A randomized comparison of coronary-stent placement and balloon angioplasty in the treatment of coronary artery disease. Stent Restenosis Study Investigators. N Engl J Med. 1994 Aug 25;331(8):496-501.
Rensing BJ, Vos J, Smits PC, Foley DP, van den Brand MJ, van der Giessen WJ, de Feijter PJ, Serruys PW. Coronary restenosis elimination with a sirolimus eluting stent: first European human experience with 6-month angiographic and intravascular ultrasonic follow-up. Eur Heart J. 2001 Nov;22(22):2125-30.
Moses JW, Leon MB, Popma JJ, Fitzgerald PJ, Holmes DR, O'Shaughnessy C, Caputo RP, Kereiakes DJ, Williams DO, Teirstein PS, Jaeger JL, Kuntz RE; SIRIUS Investigators. Sirolimus-eluting stents versus standard stents in patients with stenosis in a native coronary artery. N Engl J Med. 2003 Oct 2;349(14):1315-23.
Sirnes PA, Golf S, Myreng Y, Mølstad P, Emanuelsson H, Albertsson P, Brekke M, Mangschau A, Endresen K, Kjekshus J. Stenting in Chronic Coronary Occlusion (SICCO): a randomized, controlled trial of adding stent implantation after successful angioplasty. J Am Coll Cardiol. 1996 Nov 15;28(6):1444-51.
Rahel BM, Laarman GJ, Suttorp MJ; PRISON II study investigators. Primary stenting of occluded native coronary arteries II--rationale and design of the PRISON II study: a randomized comparison of bare metal stent implantation with sirolimus-eluting stent implantation for the treatment of chronic total coronary occlusions. Am Heart J. 2005 Mar;149(3):e1-3.

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
ClinicalTrials.gov Identifier: NCT00258596     History of Changes
Other Study ID Numbers: RDC-2002-01-PRISON II
First Submitted: November 23, 2005
First Posted: November 24, 2005
Last Update Posted: March 6, 2007
Last Verified: January 2007

Keywords provided by R&D Cardiologie:
drug-eluting stent
chronic total occlusion
sirolimus-eluting stent
zotarolimus-eluting stent

Additional relevant MeSH terms:
Coronary Artery Disease
Myocardial Ischemia
Coronary Disease
Coronary Stenosis
Coronary Occlusion
Heart Diseases
Cardiovascular Diseases
Arterial Occlusive Diseases
Vascular Diseases
Anti-Bacterial Agents
Anti-Infective Agents
Antibiotics, Antineoplastic
Antineoplastic Agents
Antifungal Agents
Immunosuppressive Agents
Immunologic Factors
Physiological Effects of Drugs

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