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  • Title: Two-year follow-up of the Genous™ endothelial progenitor cell capturing stent versus the Taxus Liberté stent in patients with de novo coronary artery lesions with a high-risk of restenosis: a randomized, single-center, pilot study.
    Author: Beijk MA, Klomp M, van Geloven N, Koch KT, Henriques JP, Baan J, Vis MM, Tijssen JG, Piek JJ, de Winter RJ.
    Journal: Catheter Cardiovasc Interv; 2011 Aug 01; 78(2):189-95. PubMed ID: 21542109.
    Abstract:
    BACKGROUND: In the prospective randomized TRIAS pilot study, the bio-engineered Genous™ endothelial progenitor cell capturing stent was compared with the Taxus Liberté™ SR paclitaxel-eluting stent. At 1 yr, a statistically nonsignificant difference in the rates of target vessel failure (cardiac death, myocardial infarction, or target vessel revascularization) was observed. We have evaluated the safety and efficacy up to 2 yr. METHODS: A total of 193 patients with de novo coronary artery lesions carrying a high risk of restenosis were randomized to a Genous stent versus a Taxus stent. Dual antiplatelet therapy was prescribed for ≥1 month after Genous stent implantation and for ≥6 months after a Taxus stent. RESULTS: Between 1 and 2 yr, patients treated with the Genous stent tended to have fewer episodes of target lesion revascularization (2.0% versus 5.3%), but nearly similar rates of cardiac death (1.0% versus 0%), myocardial infarction (0% versus 1.1%), and stent thrombosis (0% versus 1.1%) when compared with the Taxus stent. As a result, at 2-yr follow-up treatment with the Genous stent compared with the Taxus stent resulted in a nonsignificant difference in target vessel failure (TVR) (20.4% versus 15.8%; risk difference 4.6%, 95% CI -6.2-15.5%). No stent thrombosis was observed in the Genous group compared to five cases (in four patients) in the Taxus group, resulting in a difference as compared with the Taxus stent (risk difference -4.2%; 95%CI -8.2% to -0.2%). CONCLUSIONS: In the TRIAS pilot study, treatment of coronary artery lesions carrying a high risk of restenosis with the Genous compared with the Taxus stent resulted in a nonsignificant difference of TVR at 2-yr follow-up, with convergence of the Kaplan-Meier curves between 1 and 2 yr. Stent thrombosis was only observed after Taxus stent implantation.
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