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A New Strategy Regarding Discontinuation of Dual Antiplatelet

This study has been completed.
Information provided by (Responsible Party):
Yonsei University Identifier:
First received: June 14, 2010
Last updated: March 4, 2013
Last verified: March 2013

Drug-eluting stents (DES), markedly reducing the neointimal hyperplasia after stent implantation compared with bare-metal stents (BMS), have improved angiographic and clinical outcomes in the complex lesions and patients with high risks. However, currently, the fatal events related with stent thrombosis still occur and are the major limitation of the use of DES. Especially, late or very late thrombosis after DES implantation is an uncommon but life-threatening fatal complication presented with sudden death or myocardial infarction (MI) causing heart failure. The most powerful predictor for stent thrombosis is the discontinuation of clopidogrel. In consideration of current data regarding stent thrombosis and clinical situation of discontinuation of antiplatelet, zotarolimus-eluting stent (ZES) [Endeavor®, Medtronic Vascular, Santa Rosa, CA] might be anticipated to be safer than other DES during the long-term follow-up owing to healthy endothelialization. Endeavor® stent was consists of zotarolimus, thin-strut, cobalt-chromium alloy stent platform (DriverTM stent; Medtronic Vascular, Santa Rosa, CA), and phosphorylcholine coating. The ENDEAVOR II study demonstrated clinically and statistically significant improvement in all of study endpoints, including a 47 percent reduction in the primary endpoint of target vessel failure (TVF). In addition, the ENDEAVOR II trial showed a 0.5 percent rate of stent thrombosis at 30 days - with no late thrombosis beyond 30 days and no late stent malapposition. Because reendothelialization after ZES implantation may occur within 3 months, 3-month dual antiplatelet therapy is recommended in many clinical trials and real world practice. Shorter maintenance of dual antiplatelet therapy might minimize the risk for stent thrombosis in cases of discontinuation of antiplatelet and prevent waste medications and bleeding complications related with dual antiplatelet therapy. However, there have been no non-inferior or superior data of ZES considering all these circumstances. Therefore, the investigators hypothesize that ZES with 3-month dual antiplatelet therapy may be safe and beneficial in patients with coronary artery disease during follow-up than other DES, in spite of higher late lumen loss. To test this hypothesis, the investigators will perform a multi-center, randomized, prospective trial aimed at demonstrating the efficacy of the ZES versus other DES in patients with coronary artery disease in real world practice.

Condition Intervention Phase
Coronary Artery Disease
Device: Zotarolimus-eluting stent
Device: Zotarolimus-eluting stent for ACS and DM
Device: Everolimus-eluting stent for long lesion
Device: Sirolimus-eluting stent for short lesion
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A New Strategy Regarding Discontinuation of Dual Antiplatelet; Real Safety and Efficacy of a 3-month Dual Antiplatelet Therapy Following Zotarolimus-eluting Stents Implantation (RESET Trial)

Resource links provided by NLM:

Further study details as provided by Yonsei University:

Primary Outcome Measures:
  • Primary Outcome The composite of cardio-vascular death, MI, stent thrombosis, TVR and bleeding (minor or major) following randomly assigned DES implantation [ Time Frame: 12 months after stent implantation ] [ Designated as safety issue: Yes ]

Enrollment: 982
Study Start Date: May 2009
Study Completion Date: January 2012
Primary Completion Date: January 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Endeavor arm Device: Zotarolimus-eluting stent
Zotarolimus-eluting stent
Active Comparator: Endeavor resolute arm Device: Zotarolimus-eluting stent for ACS and DM
Zotarolimus-eluting stent for ACS and DM
Active Comparator: Xience arm Device: Everolimus-eluting stent for long lesion
Everolimus-eluting stent for long lesion
Active Comparator: Cypher arm Device: Sirolimus-eluting stent for short lesion
Sirolimus-eluting stent for short lesion


Ages Eligible for Study:   20 Years to 85 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Coronary artery disease including stable angina, unstable angina, acute non-ST elevation myocardial infarction and acute ST elevation myocardial infarction
  • Age 20 years of older
  • Patients with typical chest pain or evidences of myocardial ischemia (e.g., stable, unstable angina, silent ischemia and positive functional study or reversible changes in the electrocardiogram (ECG) consistent with ischemia
  • Patients with signed informed consent
  • Lesion and stent length for ACS and DM subgroup : Length of single lesion < 24 mm and, Summation of total length of all inserted DES in 3 vessel < 60 mm
  • Lesion and stent length for ACS and DM subgroup : Length of single lesion < 24 mm and, Summation of total length of all inserted DES in 3 vessel < 60 mm
  • Lesion and stent length for long lesion subgroup : Length of single stent per single lesion > 28 mm and, Summation of total length of all inserted DES in 3 vessel ≤ 90 mm, Possible overlapping stent
  • Lesion and stent length for short lesion subgroup : Length of single lesion < 24 mm and, Summation of total length of all inserted DES in 3 vessel < 60 mm
  • Significant coronary artery stenosis (>50% by visual estimate) considered for coronary revascularization with stent implantation
  • Reference vessel diameter of 2.5 to 4.0 mm by operator assessment
  • Lesion success (30% or less residual stenosis by visual assessment over the entire stent length, with TIMI-3 flow and no more than an NHLBI type B peri-stent dissection

Exclusion Criteria:

  • Contraindication to anti-platelet agents & bleeding history within prior 3 months
  • Known hypersensitivity or contraindication to any of the following medications: Heparin, Aspirin, Clopidogrel, limus related drug
  • Prior history of the following presentations : Cerebral vascular accident (not including transient ischemic attack, Peripheral artery occlusive diseases, Thromboembolic disease, Stent thrombosis
  • Severe hepatic dysfunction (3 times normal reference values)
  • Significant renal dysfunction (Serum creatinine > 2.0 mg/dl)
  • Significant leukopenia, neutropenia, thrombocytopenia, anemia, or known bleeding diathesis
  • Cardiogenic shock
  • LVEF < 40%
  • Pregnant women or women with potential childbearing
  • Life expectancy 3 year
  • Overlapped DESs(only long lesion subgroup is possible overlapping)
  • Left main disease requiring PCI
  • Bifurcation lesion with 2-stent technique
  • Target lesions with in-stent restenosis at the stented segment of DES or BMS
  • Lesions with chronic total occlusion
  • History of PCI with DES
  • In-stent restenosis lesion
  Contacts and Locations
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Please refer to this study by its identifier: NCT01145079

Korea, Republic of
Severance Cardiovascular Hospital, Yonsei University College of Medicine
Seoul, Korea, Republic of, 120-752
Sponsors and Collaborators
Yonsei University
Principal Investigator: Myeong Ki Hong, MD, PhD Severance Cardiovascular Hospital, Yonsei University College of Medicine
  More Information

No publications provided by Yonsei University

Additional publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Yonsei University Identifier: NCT01145079     History of Changes
Other Study ID Numbers: 4-2009-0115
Study First Received: June 14, 2010
Last Updated: March 4, 2013
Health Authority: Korea: Food and Drug Administration
Korea: Ministry for Health and Welfare

Additional relevant MeSH terms:
Coronary Artery Disease
Arterial Occlusive Diseases
Cardiovascular Diseases
Coronary Disease
Heart Diseases
Myocardial Ischemia
Vascular Diseases
Anti-Bacterial Agents
Anti-Infective Agents
Antibiotics, Antineoplastic
Antifungal Agents
Antineoplastic Agents
Immunologic Factors
Immunosuppressive Agents
Pharmacologic Actions
Physiological Effects of Drugs
Therapeutic Uses processed this record on March 03, 2015