CHAMPION-PCI, 2009 | cangrelor up front (cangrelor administered before percutaneous coronary intervention and followed by clopidogrel) (n=4367) vs. clopidogrel up front (clopidogrel followed by placebo) (n=4355) cangrelor then clopidogrel vs clopidogrel then placebo | high risk patients requiring PCI | double blind Parallel groups Sample size: 4367/4355 Primary endpoint: death, MI, ischemia-driven revascularization FU duration: 48 h |