per-cutaneous intervention based paclitaxel and sirolimus-eluting versus bare stents for the treatment of de novo coronary lesions (paint)

Conditions: Coronary Restenosis

Summary: objectives: primary objective: to compare the in-stent late loss at 9 months of paclitaxel- and sirolimus- eluting stents with the late loss of bare metal control stents. secondary objectives: safety: to compare the occurrence of major adverse cardiac events (mace) at 30 days, 9 months, 1 year, 3 years and 5 years among the paclitaxel, sirolimus and control study arms. to compare the occurrence de serious adverse events (saes) within 5 years among the paclitaxel, sirolimus and control study arms. to compare the occurrence of in-stent thrombosis within 5 years among the paclitaxel, sirolimus and control study arms. efficacy: to compare the rate of angiographic success among the study groups to compare the rate of procedural success among the study groups to compare the incidence of clinically driven target lesion revascularization at 9 months, 1 year, 3 years and 5 years among the paclitaxel, sirolimus and control study arms. to compare the incidence of clinically driven target vessel revascularization at 9 months, 1 year, 3 years and 5 years among the paclitaxel, sirolimus and control study arms. to compare the 1-year, 3-year and 5-year cost-effectiveness profile of the paclitaxel, sirolimus and control study arms. to compare the 9-month in-stent late loss of paclitaxel-eluting stents to the in-stent late loss of sirolimus-eluting stents to compare the 9-month in-segment late loss among the study groups to compare the 9-month in-stent and in-segment binary restenosis rate among the study groups to compare the ivus percent neointimal obstruction among the study groups study design: in the present randomized study, the paclitaxel-eluting stent infinnium® and the sirolimus-eluting stent supralimus® will be compared to a metallic stent with the same structure (milennium matrix®) but without drug elution for the treatment of de novo lesions in native coronaries. the study will be a multicenter clinical trial and will include patients for the treatment with one of the three study stents. in total, 275 patients will be enrolled, randomly allocated for the infinnium®, supralimus®, or milennium matrix® stents in a 2:2:1 proportion. patients will be followed-up for 12 months after the index procedure. all patients will undergo a follow-up angiography at 9 months. a subgroup of 55 patients will be evaluated at 9 months with ivus examination. treatment: patients will be treated, according to the randomization groups, with infinnium®, supralimus®, or milennium matrix® stents of 19 mm, 23 mm, or 29 mm and nominal diameters of 2.5, 3.0, and 3.5 mm.


Eligibility criteria:
inclusion criteria: 1. age ≥ 18 years; 2. symptomatic ischemic heart disease and/or objective evidence of myocardial ischemia; 3. de novo coronary lesion (non-restenosis); 4. target lesion located in a native artery; 5. target lesion located in a vessel with diameter between 2.5-3.5 mm (visual analysis); 6. target lesion amenable to treatment with a single stent of up to 29 mm in length; 7. target lesion with a diameter stenosis \> 50% (visual analysis); 8. acceptable candidate for surgical revascularization; 9. signed informed consent term. exclusion criteria: general exclusion criteria 1. q-wave myocardial infarction \< 48 hours before the index procedure 2. recent myocardial infarction, with or without q waves, with cardiac markers levels still above the normal upper limits 3. left ventricle ejection fraction ≤30% 4. renal dysfunction (serum creatinine \> 2.0 mg/dl \[\>177 µmol/l\]) 5. platelet count \ 700,000 cells/mm3 6. white cell count \< 3.000 cells/mm3 7. suspected or known liver disease (including subclinical hepatitis) 8. heart transplant recipient 9. know allergy to aspirin, clopidogrel, ticlopidine, paclitaxel, sirolimus, heparin, or stainless steel 10. life expectancy \< 12 months 11. any medical condition that, in the opinion of the investigator, may interfere with the ideal participation in study 12. current inclusion in another study to investigate drug or other device, or planned inclusion in another study to investigate drug or other device during the follow-up. 13. coronary angioplasty (with or without stent) \< 6 months in any segment of the target vessel 14. previous coronary angioplasty (with or without stent), at any time, in a coronary segment \< 5 mm (proximal or distal) from the target lesion 15. coronary angioplasty (with or without stent) in any segment of the target vessel planned during the next 12 months following the index procedure. angiographic exclusion criteria 1. restenotic target lesion 2. need for treatment of more than one lesion in the target vessel; 3. diameter of the target vessel \ 3.5 mm (visual analysis) 4. long target lesion, not amenable to treatment with a single stent of up to 29 mm in length, according to the operator's discretion 5. significant (\> 50%) unprotected left main lesion 6. angiographic thrombus 7. target lesion located in bypass graft 8. occluded target vessel (antegrade flow timi 0 or 1) 9. target lesion in ostial location; 10. target lesion in a bifurcation site with a side branch \> 2.5 mm or that may require stent implantation; 11. calcified target lesion with anticipated unsuccessful balloon pre-dilatation; 12. severely tortuous target vessel.

Keywords: supralimus®, infinnium®, matrix®, restenosis percutaneous revascularization techniques metallic platform agents antiproliferative properties