1-Year Clinical Outcomes of All Comers Treated With 2 Bioresorbable Polymer-Coated Sirolimus-Eluting Stents: Propensity Score-Matched Comparison of the COMBO and Ultrathin-Strut Orsiro Stents.

The aim of this study was to determine 1-year safety and efficacy after treatment with the COMBO and Orsiro stents. The COMBO stainless-steel stent has an anti-CD34+ antibody coating to capture endothelial progenitor cells, thereby promoting faster endothelialization. The Orsiro is an ultrathin-strut cobalt-chromium stent, covered by an extremely thin layer of amorphous silicon carbide to minimize ion leakage. Both devices elute sirolimus from biodegradable polymers. For this analysis we included European patients from the COMBO collaboration, a patient-level pooling of 2 prospective all-comers registries of COMBO stent implantation (n = 2,775), and all patients randomized to the Orsiro stent (n = 1,169) from the Dutch BIO-RESORT (Comparison of Biodegradable Polymer and Durable Polymer Drug-Eluting Stents in an All Comers Population) randomized trial. The main outcome of interest was 1-year target lesion failure, a composite of cardiac death, target vessel myocardial infarction, and clinically driven target lesion revascularization evaluated using propensity score-matched analysis. At baseline, COMBO patients were older and had more insulin-treated diabetes, renal insufficiency, and other comorbidities. However, Orsiro patients included more current smokers and more acute coronary syndrome presentations. Orsiro patients also received longer stents and had more complex target lesions. After propensity score-matched analysis (n = 862/arm), 1-year target lesion failure occurred in 4.1% of COMBO-treated and 2.7% of Orsiro-treated patients (hazard ratio: 1.55; 95% confidence interval: 0.92 to 2.62; p = 0.10). Definite stent thrombosis occurred in 0.5% of COMBO-treated and 0.5% of Orsiro-treated patients (p = 0.99). A propensity score-matched comparison of all comers treated with the COMBO or Orsiro stent showed no statistically significant differences. Stent thrombosis risk was low and similar between the stents. (Comparison of Biodegradable Polymer and Durable Polymer Drug-Eluting Stents in an All Comers Population [BIO-RESORT], NCT01674803; MASCOT-Post Marketing Registry [MASCOT], NCT02183454; Prospective Registry to Assess the Long-term Safety and Performance of the Combo Stent [REMEDEE Reg], NCT01874002).

Chandrasekhar J ，Kok MM ，Kalkman DN ，Aquino MB ，Zocca P ，Woudstra P ，Beijk MA ，Kerkmeijer LS ，Sartori S ，Baber U ，Tijssen JG ，Koch KT ，Dangas GD ，Colombo A ，Pocock S ，von Birgelen C ，Mehran R ，de Winter RJ ，COMBO Collaborators and BIO-RESORT Investigators ... -  《-》

Thin, Very Thin, or Ultrathin Strut Biodegradable or Durable Polymer-Coated Drug-Eluting Stents: 3-Year Outcomes of BIO-RESORT.

The aim of this study was to assess the 3-year safety and efficacy of treating all-comer patients with 3 contemporary drug-eluting stents (DES). The BIO-RESORT (Comparison of Biodegradable Polymer and Durable Polymer Drug-Eluting Stents in an All Comers Population) (TWENTE III) randomized trial (NCT01674803) found similar 1-year safety and efficacy for the 2 biodegradable-polymer DES (i.e., ultrathin-strut cobalt-chromium Orsiro sirolimus-eluting stent [SES] and very-thin-strut platinum-chromium Synergy everolimus-eluting stent) compared with the durable-polymer thin-strut cobalt-chromium Resolute Integrity zotarolimus-eluting stent (ZES). Two-year follow-up suggested that the SES might reduce repeat revascularizations beyond 1 year compared with the ZES. A total of 3,514 all-comer patients were treated at 4 centers for coronary intervention. The main clinical endpoint, target vessel failure, was a composite of safety (cardiac death or target vessel-related myocardial infarction) and efficacy (target vessel revascularization). Secondary endpoints included the individual components of target vessel failure and stent thrombosis. Three-year follow-up data were available for 3,393 of 3,514 patients (96.6%). Target vessel failure occurred in 8.5% with SES and 10.0% with ZES (plog rank = 0.22) and in 8.8% with everolimus-eluting stents (vs. ZES, plog rank = 0.32). Rates of cardiac death, target vessel myocardial infarction, and target vessel revascularization were similar between stent groups. Landmark analyses found no statistically significant between-stent difference in repeat revascularization between 1 and 3 years. Definite or probable stent thrombosis rates were low (SES, 1.1%; everolimus-eluting stent, 1.1%; ZES, 0.9%) and similar with all 3 DES. Despite substantial differences in stent backbone and polymer coating, all 3 DES showed favorable 3-year safety and efficacy in all comers, without significant between-stent differences. Further follow-up is required to definitely answer the question of whether one stent might improve clinical outcomes at a later stage.

Buiten RA ，Ploumen EH ，Zocca P ，Doggen CJM ，Danse PW ，Schotborgh CE ，Scholte M ，van Houwelingen KG ，Stoel MG ，Hartmann M ，Tjon Joe Gin RM ，Somi S ，Linssen GCM ，Kok MM ，von Birgelen C ... -  《-》

1-Year Clinical Outcomes of All-Comer Patients Treated With the Dual-Therapy COMBO Stent: Primary Results of the COMBO Collaboration.

The aim of this study was to evaluate 1-year clinical safety and efficacy of the dual-therapy COMBO stent in a large, all-comers patient-level pooled cohort. The COMBO stent (OrbusNeich Medical, Fort Lauderdale, Florida) is a novel stent with abluminal sirolimus elution from a biodegradable polymer and a luminal pro-healing anti-CD34+ antibody layer, which attracts circulating endothelial progenitor cells. These endothelial progenitor cells can quickly mature into normal endothelium, providing rapid endothelialization. The MASCOT (Multinational Abluminal Sirolimus Coated biO-engineered stenT) (N = 2,614, 61 global sites) and REMEDEE (Randomized study to Evaluate the safety and effectiveness of an abluMinal sirolimus coatED bio-Engineered StEnt Post Market Registry) (N = 1,000, 9 European sites) registries are 2 prospective, multicenter studies evaluating clinical outcomes after attempted COMBO stent placement in all-comer patients undergoing percutaneous coronary intervention. In this patient-level pooled analysis we analyzed 1-year target lesion failure (TLF), a composite of cardiac death, target vessel myocardial infarction, or clinically driven target lesion revascularization. Furthermore, we determined predictors of 1-year TLF. A total of 3,614 patients (63.5 ± 11.2 years of age; 23.8% women) were included in this analysis. The prevalence of diabetes mellitus was 29.3%, and 54.3% patients presented with acute coronary syndrome. The primary endpoint of 1-year TLF occurred in 140 (3.9%) patients, with incidence of cardiac death in 1.6%, target vessel myocardial infarction in 1.2%, clinically driven target lesion revascularization in 2.2%, and definite stent thrombosis in 0.5% patients. Insulin-treated diabetes mellitus, chronic renal failure, and American College of Cardiology/American Heart Association lesion type B2/C were independent predictors of 1-year TLF. In this large patient-level pooled analysis of patients treated with the dual-therapy COMBO stent excellent results at 1-year were observed. (MASCOT - Post Marketing Registry [MASCOT]; NCT02183454; Prospective Registry to Assess the Long-term Safety and Performance of the COMBO Stent [REMEDEE Reg]; NCT01874002).

de Winter RJ ，Chandrasekhar J ，Kalkman DN ，Aquino MB ，Woudstra P ，Beijk MA ，Sartori S ，Baber U ，Tijssen JG ，Koch KT ，Dangas GD ，Colombo A ，Mehran R ，MASCOT ，REMEDEE Registry Investigators ... -  《-》

Randomized Comparison of a Biodegradable Polymer Ultrathin Strut Sirolimus-Eluting Stent With a Biodegradable Polymer Biolimus-Eluting Stent in Patients Treated With Percutaneous Coronary Intervention: The SORT OUT VII Trial.

Coronary drug-eluting stents with biodegradable polymers have been designed to improve safety and efficacy. The Scandinavian Organization for Randomized Trials With Clinical Outcome (SORT OUT) VII trial-a large-scale registry-based randomized, multicenter, single-blind, 2-arm, noninferiority trial-compared 2 biodegradable polymer drug-eluting stents: the thin-strut cobalt-chromium sirolimus-eluting Orsiro stent and the stainless steel biolimus-eluting Nobori stent in an all-comer patient population. The primary end point target lesion failure was a composite of cardiac death, myocardial infarction (not related to other than index lesion), or target lesion revascularization within 1 year, analyzed by intention to treat (noninferiority margin of 3.0%). Clinically driven event detection based on Danish registries was used. A total of 1261 patients were assigned to receive the sirolimus-eluting stent (1590 lesions) and 1264 patients to the biolimus-eluting stent (1588 lesions). At 1 year, the composite end point target lesion failure occurred in 48 patients (3.8%) in the sirolimus-eluting group and in 58 patients (4.6%) in the biolimus-eluting group (absolute risk difference, -0.78% [upper limit of 1-sided 95% confidence interval, 0.61%]; P<0.0001). Rates of definite stent thrombosis occurred in 5 (0.4%) of the sirolimus-eluting group compared with 15 (1.2%) biolimus-eluting stent-treated patients (rate ratio, 0.33; 95% confidence interval, 0.12-0.92; P=0.034), which largely was attributable to a lower risk of subacute definite stent thrombosis: 0.1% versus 0.6% (rate ratio, 0.12; 95% confidence interval, 0.02-1.00; P=0.05). The thin-strut sirolimus-eluting Orsiro stent was noninferior to the biolimus-eluting Nobori stent in unselected patients for target lesion failure at 1 year. URL: http://www.clinicaltrials.gov. Unique identifier: NCT01879358.

Jensen LO ，Thayssen P ，Maeng M ，Ravkilde J ，Krusell LR ，Raungaard B ，Junker A ，Terkelsen CJ ，Veien KT ，Villadsen AB ，Kaltoft A ，Tilsted HH ，Hansen KN ，Aaroe J ，Kristensen SD ，Hansen HS ，Jensen SE ，Madsen M ，Bøtker HE ，Berencsi K ，Lassen JF ，Christiansen EH ... -  《-》

1-Year Results of the REMEDEE Registry: Clinical Outcomes After Deployment of the Abluminal Sirolimus-Coated Bioengineered (Combo) Stent in a Multicenter, Prospective All-Comers Registry.

This registry evaluated the safety and clinical outcomes of the Combo stent in an all-comers population in routine clinical practice. We report 1-year results. Limitations of current generation drug-eluting stents (DES) are 3-fold: stent thrombosis, neoatherosclerosis related to impaired healing, and repeat revascularization due to (late-) in-stent restenosis. The Combo stent combines an abluminal biodegradable coating eluting sirolimus and a luminal anti-CD34(+) antibody layer to attract endothelial progenitor cells in order to promote vessel healing, thus preventing neointima formation and restenosis. The REMEDEE (Randomized study to Evaluate the safety and effectiveness of an abluMinal sirolimus coatED bio-Engineered StEnt) post-market registry was an international, multicenter, prospective trial that evaluated clinical outcomes after deployment of the Combo stent, in an all-comers population of patients treated with a Combo stent in the setting of routine clinical care. Clinical endpoints were target lesion failure (TLF), defined as a composite of cardiac death, nonfatal myocardial infarction (MI), or target lesion revascularization (TLR). Between June 2013 and March 2014, a total of 1,000 patients were included in the registry, 49.9% of whom presented with acute coronary syndrome. Mean age was 65 ± 11 years old (range: 34 to 94 years of age), and 74% of patients were male; 58.9% of 1,255 lesions were American Heart Association type B2 or C lesions. The primary endpoints were 5.7% TLF, 1.7% cardiac death, 0.7% target vessel MI, and 4.4% TLR. Definite stent thrombosis occurred in 0.5% of subjects; no thrombosis occurred after 9 days post-stenting. This registry showed excellent 1-year results of novel Combo bioengineered stent technology in an all-comers patient population. (Prospective Registry to Assess the Long-term Safety and Performance of the Combo Stent [REMEDEE]; NCT01874002).

Woudstra P ，Kalkman DN ，den Heijer P ，Menown IB ，Erglis A ，Suryapranata H ，Arkenbout KE ，Iñiguez A ，van 't Hof AW ，Muller P ，Tijssen JG ，de Winter RJ ... -  《-》