title: Safety and efficacy of a novel abluminal groove-filled biodegradable polymer sirolimus-eluting stent for the treatment of de novo coronary lesions: 12-month results from the TARGET II trial.
abstract: BACKGROUND
  In the TARGET I randomized controlled trial, the novel abluminal groove-filled biodegradable polymer sirolimus-eluting stent FIREHAWK proved non-inferior to the everolimus-eluting stent in nine-month in-stent late loss in single de novo coronary lesions. This study was aimed at evaluating clinical safety and effectiveness of FIREHAWK in a moderately complex population (including patients with small vessels, long lesions and multi-vessels), and at validating the ability of the SYNTAX score (SS) to predict clinical outcomes in patients treated with this latest generation drug-eluting stent.
  
  
  METHODS
  TARGET II was a prospective, multicenter, single-arm study with primary outcome of 12-month target lesion failure (TLF), including cardiac death, target vessel myocardial infarction (TV-MI) and ischemia-driven target lesion revascularization (TLR). Stent thrombosis was defined according to the Academic Research Consortium (ARC) definition. Patients were grouped by tertiles of SS (≤6, >6 to ≤12, and >12). All patients were exclusively treated with the FIREHAWK stent and were followed up at 1, 6, and 12 months, and annually thereafter up to five years.
  
  
  RESULTS
  A total of 730 patients were included in this registry study. The 12-month incidence of TLF was 4.4% and the incidence of TLF components were, cardiac death 0.5%, TV-MI 3.2%, and TLR 2.2%. One definite/probable stent thrombosis was observed at 12-month follow-up. Mean SS was 10.87±6.87. Patients in the SS >12 tertile had significantly higher TLF (P = 0.02) and TLR (P < 0.01) rates than those in lower SS groups. In COX proportional-hazards regression analyses, TLF incidence was strongly related to lesion length (long lesion vs. non-long lesion patients; HR 3.416, 95% CI, 1.622-7.195), but unrelated to diabetic, small vessel, and multivessel subgroups.
  
  
  CONCLUSIONS
  The low TLF incidence in this study indicates that FIREHAWK is safe and effective in the treatment of moderately complex coronary disease. SS is also able to predict adverse clinical outcomes in FIREHAWK treated patients.
authors.affiliation: Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular Diseases, Beijing 100037, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Xu
authors.affiliation: Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular Diseases, Beijing 100037, China.
authors.forename: Yelin
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular Diseases, Beijing 100037, China.
authors.forename: Yuejin
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Cardiology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China.
authors.forename: Ruiyan
authors.initials: R
authors.lastname: Zhang
authors.affiliation: Department of Cardiology, Daqing Oil Field General Hospital, Daqing, Heilongjiang 163114, China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.affiliation: Department of Cardiology, Affiliated Anzhen Hospital of Capital Medical University, Beijing 100029, China.
authors.forename: Changsheng
authors.initials: C
authors.lastname: Ma
authors.affiliation: Department of Cardiology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, China.
authors.forename: Shaoliang
authors.initials: S
authors.lastname: Chen
authors.affiliation: Department of Cardiology, Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, China.
authors.forename: Jianan
authors.initials: J
authors.lastname: Wang
authors.affiliation: Department of Cardiology, Peking University First Hospital, Beijing 100034, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Huo
authors.affiliation: Columbia University Medical Center/Cardiovascular Research Foundation, New York, USA.
authors.forename: Martin B
authors.initials: MB
authors.lastname: Leon
authors.affiliation: Department of Cardiology, Fu Wai Hospital, National Center for Cardiovascular Diseases, Beijing 100037, China. Email: gaorunlin@citmd.com.
authors.forename: Runlin
authors.initials: R
authors.lastname: Gao
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001672:Biocompatible Materials / Q000737:chemistry*; D002317:Cardiovascular Agents / Q000627:therapeutic use; D023921:Coronary Stenosis / Q000188:drug therapy / Q000628:therapy; D003331:Coronary Vessels / Q000473:pathology*; D054855:Drug-Eluting Stents; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D062645:Percutaneous Coronary Intervention; D011108:Polymers; D016016:Proportional Hazards Models; D020123:Sirolimus / Q000627:therapeutic use*; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D002317:Cardiovascular Agents; D011108:Polymers; D020123:Sirolimus