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Objectives: The aim of this randomized-controlled trial is to compare Biolimus A9-eluting stent (Nobori) to sirolimus eluting stent (Cypher). Background: The Nobori coronary stent is coated only abluminally with a biodegradable polymer, poly-lactic acid, and the antiproliferative agent Biolimus A9. This stent has been studied in randomized trials versus Taxus Express and Taxus Liberte and showed noninferiority and superiority for in-stent late loss. This is the first randomized trial of Nobori stent versus Cypher stent. Methods: We conducted a randomized (3:2), controlled trial comparing Nobori and Cypher, in 335 patients (198 Nobori and 137 Cypher) at 15 centers in Japan. Patients with de-novo lesions in up to two native coronary arteries were considered for enrollment. The primary endpoint was freedom from target vessel failure (TVF), a composite of cardiac death, myocardial infarction, and target vessel revascularization at 9 months. Results: At 9 months, the primary endpoint of freedom from TVF was 92.6% in Nobori and 93.8% in Cypher arm (noninferiority test P \textless 0.001). As main secondary endpoints, the in-stent late loss was 0.12 +/- 0.30 mm and 0.14 +/- 0.34 mm in Nobori and Cypher stents, respectively. Target lesion revascularization was 0.5% in Nobori and 3.9% in Cypher treated patients (P = 0.04). Definite and probable stent thromboses were not recorded in any patient. Conclusions: Despite the relatively small number of patients, this well controlled clinical trial confirmed the primary hypothesis of non-inferiority of the Nobori Biolimus A9-eluting stent to the Cypher sirolimus-eluting stent for freedom from TVF. Both stents showed excellent midterm results. (c) 2011 Wiley Periodicals, Inc.

Original publication




Journal article


Catheterization and Cardiovascular Interventions

Publication Date





789 - 796