title: A randomized comparison of a sirolimus-eluting stent with a standard stent for coronary revascularization.
abstract: BACKGROUND
  The need for repeated treatment of restenosis of a treated vessel remains the main limitation of percutaneous coronary revascularization. Because sirolimus (rapamycin) inhibits the proliferation of lymphocytes and smooth-muscle cells, we compared a sirolimus-eluting stent with a standard uncoated stent in patients with angina pectoris.
  
  
  METHODS
  We performed a randomized, double-blind trial to compare the two types of stents for revascularization of single, primary lesions in native coronary arteries. The trial included 238 patients at 19 medical centers. The primary end point was in-stent late luminal loss (the difference between the minimal luminal diameter immediately after the procedure and the diameter at six months). Secondary end points included the percentage of in-stent stenosis of the luminal diameter and the rate of restenosis (luminal narrowing of 50 percent or more). We also analyzed a composite clinical end point consisting of death, myocardial infarction, and percutaneous or surgical revascularization at 1, 6, and 12 months.
  
  
  RESULTS
  At six months, the degree of neointimal proliferation, manifested as the mean (+/-SD) late luminal loss, was significantly lower in the sirolimus-stent group (-0.01+/-0.33 mm) than in the standard-stent group (0.80+/-0.53 mm, P<0.001). None of the patients in the sirolimus-stent group, as compared with 26.6 percent of those in the standard-stent group, had restenosis of 50 percent or more of the luminal diameter (P<0.001). There were no episodes of stent thrombosis. During a follow-up period of up to one year, the overall rate of major cardiac events was 5.8 percent in the sirolimus-stent group and 28.8 percent in the standard-stent group (P<0.001). The difference was due entirely to a higher rate of revascularization of the target vessel in the standard-stent group.
  
  
  CONCLUSIONS
  As compared with a standard coronary stent, a sirolimus-eluting stent shows considerable promise for the prevention of neointimal proliferation, restenosis, and associated clinical events.
authors.affiliation: Institut Cardiovasculaire Paris Sud, Massy, France.
authors.forename: Marie-Claude
authors.initials: MC
authors.lastname: Morice
authors.forename: Patrick W
authors.initials: PW
authors.lastname: Serruys
authors.forename: J Eduardo
authors.initials: JE
authors.lastname: Sousa
authors.forename: Jean
authors.initials: J
authors.lastname: Fajadet
authors.forename: Ernesto
authors.initials: E
authors.lastname: Ban Hayashi
authors.forename: Marco
authors.initials: M
authors.lastname: Perin
authors.forename: Antonio
authors.initials: A
authors.lastname: Colombo
authors.forename: G
authors.initials: G
authors.lastname: Schuler
authors.forename: Paul
authors.initials: P
authors.lastname: Barragan
authors.forename: Giulio
authors.initials: G
authors.lastname: Guagliumi
authors.forename: Ferenc
authors.initials: F
authors.lastname: Molnàr
authors.forename: Robert
authors.initials: R
authors.lastname: Falotico
mesh_terms: D003327:Coronary Disease / Q000401:mortality / Q000628:therapy*; D023903:Coronary Restenosis / Q000453:epidemiology / Q000517:prevention & control*; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000473:pathology; D003692:Delayed-Action Preparations; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006965:Hyperplasia / Q000517:prevention & control; D007166:Immunosuppressive Agents / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology; D020123:Sirolimus / Q000008:administration & dosage*; D015607:Stents; D017539:Tunica Intima / Q000473:pathology; D018084:Ultrasonography, Interventional
chemical_list: D003692:Delayed-Action Preparations; D007166:Immunosuppressive Agents; D020123:Sirolimus