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PIoglitazone for PrEvention of Restenosis in Diabetic Patients

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. Identifier: NCT00376870
Recruitment Status : Unknown
Verified June 2008 by University of Rome Tor Vergata.
Recruitment status was:  Recruiting
First Posted : September 15, 2006
Last Update Posted : August 1, 2008
Information provided by:
University of Rome Tor Vergata

Brief Summary:

Restenosis requiring reintervention is still a limitation of percutaneous coronary angioplasty. Despite the use of Drug eluting stent (DES), the rate of restenosis remains 7% to 16% in diabetic patients, making it a challenging problem in interventional cardiology.

Still, in clinical trials, most of these attempts did not successfully limit neointimal formation after coronary stenting.

Thiazolidinediones (TZDs), like pioglitazone (pio) or rosiglitazone, are a novel class of oral antidiabetic agents currently used to treat patients with type 2 diabetes mellitus.

These agents increase insulin sensitivity and, as such, have favorable effects on blood glucose levels and the lipid profile in treated patients.

Beyond their metabolic action, TZDs have been shown to exhibit antiinflammatory and antiatherogenic effects in vascular cells in vitro and to limit lesion development in various animal models of arteriosclerosis.

Moreover, TZDs inhibit VSMC proliferation and migration, 2 critical processes in neointimal formation after coronary stenting.

Data from rodent models suggest that TZDs limit intimal proliferation after vascular injury, and in clinical studies with type 2 diabetic coronary artery disease (CAD) patients, TZDs have been shown to reduce neointimal formation as well as restenosis after coronary stent implantation.

Still, it remains unclear to what extend these effects depend on the metabolic action of these drugs and what might mainly be due to the improvement in glycemic control.

Recently a few reports on prevention of restenosis in type 2 diabetic patients (T2DM) with the use of TZDs as been published. All of them uses BMS as endoprosthetic devices. None of these evaluated the use of TZDs in combination with DES.

Aim of the study is to evaluate the efficacy of pioglitazone in prevention of in-stent restenosis after successful implantation of a sirolimus-eluting coronary stent for treatment of de-novo "complex" coronary vessel disease in patients with T2DM and stable coronary artery disease.

Study primary end-point are late-loss at 9 months.Secondary end-point include binary restenosis MACE at 1, 9 and 12 month, stent thrombosis at 12 months.

Condition or disease Intervention/treatment Phase
Coronary Atherosclerosis Coronary Restenosis Diabetes Drug: Pioglitazone Drug: Placebo Phase 3

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 160 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Prevention of Coronary Artery in STENT Restenosis With the Combined Use of Pioglitazone and Sirolimus-Eluting Coronary Stent
Study Start Date : July 2008
Estimated Primary Completion Date : December 2010
Estimated Study Completion Date : April 2011

Resource links provided by the National Library of Medicine

Arm Intervention/treatment
Active Comparator: Pioglitazone
Pioglitazone 30mg/d
Drug: Pioglitazone
pioglitazone 30 mg/d

Placebo Comparator: Placebo Drug: Placebo
Placebo 30 mg/d

Primary Outcome Measures :
  1. In-Segment Late Loss [ Time Frame: 9 months ]

Secondary Outcome Measures :
  1. Binary restenosis [ Time Frame: 9 months ]
  2. MACE [ Time Frame: 1, 9, 12 month ]
  3. Stent thrombosis [ Time Frame: 12 month ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 70 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

I5.1 Inclusion criteria

  • Patients must be previously diagnosed with type 2 diabetes with documented treatment with insulin, oral hypoglycemics, or diet controlled by medical history. (Undocumented or newly diagnosed diabetics must fulfill the American Diabetes Association Criteria-Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus (Diabetes Care 2003;26:S5-20)).
  • Diagnosis of angina pectoris defined by Canadian Cardiovascular Society Classification (CCS I, II, III, IV) OR unstable angina pectoris (Braunwald Classification B&C, I-II-III) OR patients with documented silent ischemia;
  • Patients with "de novo" coronary lesion (any length) who are eligible for coronary revascularization;
  • Target lesion is ≥2.5 mm to ≤3.5mm in diameter (visual estimate);
  • Target lesion stenosis is ≥50% (visual estimate);
  • Male or Female age >18 years old;
  • Patients with one or more lesions to be treated with a sirolimus eluting stent (Cypher, Cordis);
  • Patient must provide written informed consent prior to the procedure using a form that is approved by the local Institutional Review Board.
  • At least one lesion must be a complex lesion (see below for details)

5.2 Exclusion criteria

  • Patients under age 18 years old;
  • Patient has experienced an ST-segment elevation myocardial infarction within the preceding 30 days;
  • Active liver disease (ALT>2.5 times upper limit of normal);
  • Impaired renal function (creatinine ≥2.5 mg/dL);
  • Previous brachytherapy of target vessel;
  • Lesion of the Left Main trunk > 50%;
  • Target lesion is in a saphenous venous graft or internal mammary graft;
  • Target lesion is due to restenosis ;
  • Recipient of heart transplant;
  • Women who are pregnant or who have the potential to become pregnant during the study;
  • Patients with life expectancy of less than one year or factors making clinical follow-up difficult;
  • Patients with bleeding diathesis in whom anticoagulant or antiplatelet drug is contraindicated;
  • Patient with intolerance/contraindication to Aspirin or Ticlopidine/Clopidogrel or pioglitazone treatment;
  • Currently participating in an investigational drug or another device study;
  • Patients with leukopenia;
  • Patients with neutropenia;
  • Documented peptic ulcer or gastric/intestinal bleeding in the last 6 months;
  • Patients with thrombocytopenia.

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 identifier (NCT number): NCT00376870

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Contact: Fabrizio Clementi, MD, PhD +390620904009
Contact: Ruggiero Mango, MD +393288982448

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Policlinico di Tor Vergata Not yet recruiting
Rome, Italy, 00133
Principal Investigator: Fabrizio Clementi, MD. PhD         
Policlinico di Tor Vergata Recruiting
Rome, Italy, 00133
Contact: Saverio Muscoli, MD    +390620904009   
Principal Investigator: Fabrizio Clementi, MD, PhD         
Sponsors and Collaborators
University of Rome Tor Vergata
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Study Chair: Francesco Romeo, MD University of Rome Tor Vergata
Additional Information:
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Fabrizio Clementi Identifier: NCT00376870    
Other Study ID Numbers: PIPER
First Posted: September 15, 2006    Key Record Dates
Last Update Posted: August 1, 2008
Last Verified: June 2008
Keywords provided by University of Rome Tor Vergata:
Type 2 Diabetes Mellitus
Additional relevant MeSH terms:
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Coronary Artery Disease
Myocardial Ischemia
Coronary Restenosis
Arterial Occlusive Diseases
Vascular Diseases
Cardiovascular Diseases
Coronary Disease
Heart Diseases
Coronary Stenosis
Hypoglycemic Agents
Physiological Effects of Drugs