Long-Term Efficacy and Safety of Biodegradable-Polymer Biolimus-Eluting Stents: Main Results of the Basel Stent Kosten-Effektivitäts Trial-PROspective Validation Examination II (BASKET-PROVE II), A Randomized, Controlled Noninferiority 2-Year Outcome Trial

Christoph Kaiser, Soeren Galatius, Raban Jeger, Nicole Gilgen, Jan Skov Jensen, Christoph Naber, Hannes Alber, Maria Wanitschek, Franz Eberli, David J Kurz, Giovanni Pedrazzini, Tiziano Moccetti, Hans Rickli, Daniel Weilenmann, André Vuillomenet, Martin Steiner, Stefanie Von Felten, Deborah R Vogt, Kim Wadt Hansen, Peter RickenbacherDavid Conen, Christian Müller, Peter Buser, Andreas Hoffmann, Matthias Pfisterer, BASKET-PROVE II Study group**

87 Citationer (Scopus)

Abstract

BACKGROUND: Biodegradable-polymer drug-eluting stents (BP-DES) were developed to be as effective as second-generation durable-polymer drug-eluting stents (DP-DES) and as safe >1 year as bare-metal stents (BMS). Thus, very late stent thrombosis (VLST) attributable to durable polymers should no longer appear.

METHODS AND RESULTS: To address these early and late aspects, 2291 patients presenting with acute or stable coronary disease needing stents ≥3.0 mm in diameter between April 2010 and May 2012 were randomly assigned to biolimus-A9-eluting BP-DES, second-generation everolimus-eluting DP-DES, or thin-strut silicon-carbide-coated BMS in 8 European centers. All patients were treated with aspirin and risk-adjusted doses of prasugrel. The primary end point was combined cardiac death, myocardial infarction, and clinically indicated target-vessel revascularization within 2 years. The combined secondary safety end point was a composite of VLST, myocardial infarction, and cardiac death. The cumulative incidence of the primary end point was 7.6% with BP-DES, 6.8% with DP-DES, and 12.7% with BMS. By intention-to-treat BP-DES were noninferior (predefined margin, 3.80%) compared with DP-DES (absolute risk difference, 0.78%; -1.93% to 3.50%; P for noninferiority 0.042; per protocol P=0.09) and superior to BMS (absolute risk difference, -5.16; -8.32 to -2.01; P=0.0011). The 3 stent groups did not differ in the combined safety end point, with no decrease in events >1 year, particularly VLST with BP-DES.

CONCLUSIONS: In large vessel stenting, BP-DES appeared barely noninferior compared with DP-DES and more effective than thin-strut BMS, but without evidence for better safety nor lower VLST rates >1 year. Findings challenge the concept that durable polymers are key in VLST formation.

CLINICAL TRIAL REGISTRATION URL: http://www.clinicaltrials.gov. Unique identifier: NCT01166685.

OriginalsprogEngelsk
TidsskriftCirculation (Baltimore)
Vol/bind131
Udgave nummer1
Sider (fra-til)74-81
Antal sider8
ISSN0009-7322
DOI
StatusUdgivet - 6 jan. 2015

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