CYP2C19 and coronary artery disorder: Similarly, the Tailored Antiplatelet Therapy Following PCI (TAILOR-PCI) is a multi-site, open label, prospective, randomized trial, where 5000 patients with ACS or stable CAD who underwent PCI with stent will be recruited and randomized to receive a conventional therapy or a CYP2C19 genotype-based anti-platelet therapy approach (NCT01742117).