Comparison of Ridaforolimus-Eluting and Zotarolimus-Eluting Coronary Stents: 5-Year Outcomes From the BIONICS and NIREUS Trials.

Background: The BIONICS (BioNIR Ridaforolimus-Eluting Coronary Stent System in Coronary Stenosis) and the NIREUS (BioNIR Ridaforolimus Eluting Coronary Stent System [BioNIR] European Angiography Study) randomized clinical trials showed noninferiority of the ridaforolimus-eluting stent (RES) compared with the zotarolimus-eluting stent (ZES) with respect to 1-year target-lesion failure and 6-month angiographic late lumen loss. We aimed to evaluate clinical outcomes between treatment groups over a 5-year follow-up.

Methods and results: Patient-level data from the BIONICS (n=1919) and NIREUS (n=302) were pooled, comparing the outcomes of patients implanted with RES and ZES. The primary end point was the 5-year rate of target-lesion failure. A total of 2221 patients (63.2±10.3 years, 79.7% men) undergoing percutaneous coronary intervention with RES (n=1159) or ZES (n=1062) were included. Most clinical and angiographic characteristics were similar between groups. At 5 years, the primary end point of target-lesion failure was similar between treatment groups (12.2% RES versus 11.3% ZES, P=0.52). Rates of TLR (7.6% RES versus 6.8% ZES, P=0.42) target-vessel-related myocardial infarction (4.8% RES versus 4.9% ZES, P=0.95) and stent thrombosis (0.9% RES versus 0.9% ZES, P=0.87) also did not differ between groups. Target-vessel revascularization and cardiac death were higher among the RES group (12.3% versus 9.5% P=0.037, and 3.6% versus 2.2% P=0.042, respectively). However, after correction for baseline characteristics, there was no significant difference in cardiac death between groups.

Conclusions: In a pooled analysis of 2 randomized trials, 5-year clinical outcomes were similar between patients undergoing percutaneous coronary intervention with RES and ZES. These results support the long-term safety and efficacy of RES for the treatment of patients with coronary artery disease.