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A Randomized Trial Comparing the NeoVas Sirolimus-Eluting Bioresorbable Scaffold and Metallic Everolimus-Eluting Stents. | LitMetric

AI Article Synopsis

Article Abstract

Objectives: The authors sought to evaluate the safety and effectiveness of the NeoVas bioresorbable scaffold (BRS) compared with metallic drug-eluting stents.

Background: BRS have the potential to improve very late outcomes compared with metallic drug-eluting stents, but some BRS have been associated with increased rates of device thrombosis before complete bioresorption. NeoVas is a new poly-l-lactic acid BRS that elutes sirolimus from a poly-D, l-lactide coating.

Methods: Eligible patients with a single de novo native coronary artery lesion with a reference vessel diameter 2.5 to 3.75 mm and a lesion length ≤20 mm were randomized 1:1 to NeoVas BRS versus cobalt-chromium everolimus-eluting stents (CoCr-EES). Angiographic follow-up was performed in all patients at 1 year. The primary endpoint was angiographic in-segment late loss (LL), and the major secondary endpoint was the rate of angina. Baseline and follow-up optical coherence tomography and fractional flow reserve were performed in a pre-specified subgroup of patients.

Results: The authors randomized 560 patients at 32 centers to treatment with NeoVas (n = 278) versus CoCr-EES (n = 282). One-year in-segment LL with NeoVas and CoCr-EES were 0.14 ± 0.36 mm versus 0.11 ± 0.34 mm (difference 0.03 mm; upper 1-sided 97.5% confidence interval 0.09 mm; p < 0.0001; p = 0.36). Clinical outcomes at 1 year were similar in the 2 groups, as were the rates of recurrent angina (27.9% vs. 32.1%; p = 0.26). Optical coherence tomography at 1 year demonstrated a higher proportion of covered struts (98.7% vs. 96.2%; p < 0.001), less strut malapposition (0% vs. 0.6%; p <0.001), and a smaller minimal lumen area (4.71 ± 1.64 vs. 6.00 ± 2.15 mm; p < 0.001) with NeoVas compared with CoCr-EES respectively, with nonsignificant differences in fractional flow reserve (0.89 ± 0.08 vs. 0.91 ± 0.06; p = 0.07).

Conclusions: The NeoVas BRS was noninferior to CoCr-EES for the primary endpoint of 1-year angiographic in-segment LL, and resulted in comparable 1-year clinical outcomes, including recurrent angina. (NeoVas Bioresorbable Coronary Scaffold Randomized Controlled Trial; NCT02305485).

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http://dx.doi.org/10.1016/j.jcin.2017.09.037DOI Listing

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