TAXUS II: A Randomized, Double-Blind, Controlled Study of the Safety and Performance of the NIRx™ Paclitaxel-Coated Conformer Coronary Stent
试验速览
- 阶段
- 2 期
- 状态
- 已完成
- 入组人数
- 532
- 试验地点
- 2
- 主要终点
- Mean percent in-stent net volume obstruction at 6 months post-procedure as measured by IVUS
研究概览
简要总结
The clinical investigation is an international, prospective, double-blind, randomized safety and efficacy study. The purpose of this study is to evaluate the safety and performance of the NIRx(TM) Paclitaxel-Coated Stent (1.0µg/mm2 of paclitaxel incorporated into slow- and moderate-release formulation of a triblock copolymer carrier system)in patients who present for stenting of de novo lesions of a native coronary artery.
详细描述
The primary objective of this study is to evaluate the safety and performance of coronary artery stenting with the NIRx(TM) Paclitaxel-Coated Stent (1.0µg/mm2 of paclitaxel incorporated into slow- and moderate-release formulation of a triblock copolymer carrier system) for the treatment of de novo lesions in native vessels. Patients in 2 sequential cohorts will be randomised to receive either the NIRx(TM) Paclitaxel-Coated Stent or the uncoated control stent. In cohort 1, the slow-release formulation NIRx(TM) Paclitaxel-Coated Stent will be studied. If the safety profile is acceptable, the moderate-release formulation NIRx(TM) Paclitaxel-Coated Stent will be studied in Cohort 2. In each f the 2 cohorts, 133 patients will be treated with the NIRx(TM) paclitaxel-Coated Stent and 133 with the uncoated control stent (1.1 ratio), for a total of 532 patients in study.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Patient >= 18 years old.
- •Eligible for percutaneous transluminal coronary angioplasty (PTCA).
- •Patient (or legal guardian) understands the study requirements and the stent treatment procedure and provides written Informed Consent before any study-specific tests or procedures are performed.
- •Willing to comply with all specified follow-up evaluations.
- •Documented stable angina pectoris (Canadian Cardiovascular Society Classification [CCS] 1, 2, 3, or 4), unstable angina pectoris with documented ischemia (Braunwald Class IB - C, IIB - C, or IIIB - C), or documented silent ischemia.
- •Acceptable candidate for CABG.
- •Angiographic Inclusion Criteria:
- •Target lesion is located within a native coronary vessel.
- •Target lesion is de novo (i.e., a coronary lesion not previously treated).
- •Target lesion diameter stenosis >= 50% and <= 99% (visual estimate or on-line QCA).
- •Target lesion <= 12 mm in length (visual estimate or on-line QCA).
- •Target vessel >= 3.0 mm and <= 3.5 mm in diameter (visual estimate or on-line QCA).
排除标准
- •Known sensitivity to paclitaxel.
- •Patient has received paclitaxel or other anti-mitogenic agent within 12 months prior to planned enrollment in the study.
- •Patient has previous stent procedure with any drug-coated or drug-eluting stent device.
- •Patient has undergone any coronary intervention within 30 days prior to stent placement associated with this protocol.
- •Patient anticipates planned additional intervention (staged procedure) to any non-target coronary vessel within 45 days after the stent placement associated with this protocol.
- •MI within 72 hours of planned stent placement.
- •Left ventricular ejection fraction (LVEF) of < 30%.
- •Stroke within the past 6 months.
- •Acute or chronic renal dysfunction (creatinine >1.7 mg/mL or >150 µmol/L).
- •Acetylsalicylic acid and/or clopidogrel and/or ticlopidine are contraindicated.
- •Leukopenia (leukocytes <3.5 x 109/liter).
- •Thrombocytopenia (platelets <100,000/mm3).
- •Active peptic ulcer or active gastrointestinal (GI) bleeding.
- •Known allergy to stainless steel.
- •Previously enrolled in the NIRx(TM) Coronary Stent Clinical Safety and Performance Study.
- •Currently enrolled in another investigational device or drug study and has not completed the required follow-up period, or has completed all other study-required follow-up less than 30 days prior to enrollment in this study.
- •Patient is lactating, has a positive pregnancy test within 7 days of planned stent placement, or intends to become pregnant during the study (only applies to female patients of child-bearing potential).
- •Life expectancy of less than 24 months because of other medical conditions.
- •Co-morbid condition(s) that could limit the patient's ability to participate in the study or comply with follow-up requirements or co-morbid condition(s) that could impact the scientific integrity of the study.
- •Angiographic Exclusion Criteria:
- •Unprotected left main coronary artery disease (or obstruction greater than 50% in the left main coronary artery that is not protected by at least 1 non-obstructed bypass graft to the left anterior descending [LAD] or circumflex artery or a branch thereof).
- •Target lesion is in a previously stented segment.
- •Target vessel was treated with directional coronary atherectomy, laser, or transluminal extraction catheter prior to stent placement.
- •Target lesion is ostial in location (within 3 mm of vessel origin).
- •Target site of stent placement has side branches >2.0 mm in diameter.
- •Target lesion is severely calcified (by visual estimate)
- •Target vessel has closed abruptly or is threatening closure.
- •Target lesion is located within or immediately distal to a >60° bend in the vessel.
- •Target vessel has diffuse disease requiring more than one 15 mm stent for full lesion coverage.
- •Target lesion involves a bifurcation where a branch vessel greater than 2.0 mm in diameter originates (either stenosis of both main vessel and major branch or stenosis of just major branch).
- •Target lesion has excessive tortuosity unsuitable for stent delivery and deployment.
- •Target lesion is located within a saphenous vein bypass graft.
- •Target lesion is located in a vessel section supplied by distal graft.
结局指标
主要结局
Mean percent in-stent net volume obstruction at 6 months post-procedure as measured by IVUS
次要结局
未报告次要终点