Five‐Year Outcomes in Patients With Diabetes Mellitus Treated With Biodegradable Polymer Sirolimus‐Eluting Stents Versus Durable Polymer Everolimus‐Eluting Stents

BACKGROUND: The choice of optimal drug‐eluting stent therapy for patients with diabetes mellitus (DM) undergoing percutaneous coronary intervention remains uncertain. We aimed to assess the long‐term clinical outcomes after percutaneous coronary intervention with biodegradable polymer sirolimus‐eluting stents (BP‐SES) versus durable polymer everolimus‐eluting stents (DP‐EES) in patients with DM. METHODS AND RESULTS: In a prespecified subgroup analysis of the BIOSCIENCE (Ultrathin Strut Biodegradable Polymer Sirolimus‐Eluting Stent Versus Durable Polymer Everolimus‐Eluting Stent for Percutaneous Coronary Revascularization) trial (NCT01443104), patients randomly assigned to ultrathin‐strut BP‐SES or thin‐strut DP‐EES were stratified according to diabetic status. The primary end point was target lesion failure, a composite of cardiac death, target vessel myocardial infarction, and clinically indicated target lesion revascularization, at 5 years. Among 2119 patients, 486 (22.9%) presented with DM. Compared with individuals without DM, patients with DM were older and had a greater baseline cardiac risk profile. In patients with DM, target lesion failure at 5 years occurred in 74 patients (cumulative incidence, 31.0%) treated with BP‐SES and 57 patients (25.8%) treated with DP‐EES (risk ratio, 1.23; 95% CI, 0.87–1.73 [P=0.24]). In individuals without DM, target lesion failure at 5 years occurred in 124 patients (16.8%) treated with BP‐SES and 132 patients (16.8%) treated with DP‐EES (risk ratio, 0.98; 95% CI, 0.77–1.26 [P=0.90; P for interaction=0.31]). Cumulative 5‐year incidence rates of cardiac death, target vessel myocardial infarction, clinically indicated target lesion revascularization, and definite stent thrombosis were similar among patients with DM treated with BP‐SES or DP‐EES. There was no interaction between diabetic status and treatment effect of BP‐SES versus DP‐EES. CONCLUSIONS: In a prespecified subgroup analysis of the BIOSCIENCE trial, we found no difference in clinical outcomes throughout 5 years between patients with DM treated with ultrathin‐strut BP‐SES or thin‐strut DP‐EES. CLINICAL TRIAL REGISTRATION: URL: https://www.clinicaltrials.gov/. Unique identifier: NCT01443104.