SYNTAX Substudy Shows Convinced Outcomes For Left Leading Patients Treated With TAXUS R Express2 R Stent System
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Boston Scientific Gathering (NYSE: BSX) announced positive outcomes from a substudy of patients with left main coronary disease who were treated with the TAXUS(R) Express2(R) Paclitaxel-Eluting Coronary Stent System. SYNTAX-LE MANS is a substudy of the landmark SYNTAX trial, the first randomized, controlled clinical research to compare percutaneous coronary intervention (PCI) using the TAXUS Stent to coronary artery bypass scion (CABG) surgery in patients with left main disease and/or significant narrowing of all three coronary arteries (three-vessel disease). The substudy material were presented by A. Pieter Kappetein, M.D., Ph.D., at the annual EuroPCR Scientific Program in Barcelona.
SYNTAX-LE MANS compares unpunctual angiographic and clinical outcomes in 263 patients with left main disease (149 treated with the TAXUS Stent and 114 treated with CABG). It is designed to assess 15-month patency (vessel openness) and the safety of stents and grafts in this high-risk population; it includes separate primary endpoints for each treatment arm. For PCI patients, the primary endpoint is the percentage of long-term patency (defined here as <50% stenosis) of the treated lesion sites. For CABG patients, the essential endpoint is the ratio of obstructed/occluded grafts (defined here as greater than or identical to 50% stenosis) to complete placed grafts. Results were presented separately for everyone group, and no formal statistical inferences between the two groups were prepared due to the deviating primary endpoints. Results were besides broken out by left main lesion location, including distal and non-distal.
For those patients receiving a TAXUS Stent, the patency rate for the treated lesion was 92 percent. Restenosis was besides familiar with distal lesions (90% patency) compared with non-distal lesions (98% patency). Reported in-stent slow loss was low at 0.2 mm for non-distal lesions. The reported 15-month MACCE ratio (all-cause death, stroke, myocardial infarction and revascularization) for the TAXUS Stent patients was 13 percent, driven primarily by a nine percent repeat revascularization rate.
For CABG patients, the overall obstruction/occlusion ratio at 15 months was 16 percent, with six percent of grafts obstructed in the compass of in a superior way than or equal to 50% to <100%, and 10 percent of grafts occluded 100%. On a per patient basis, the obstruction/occlusion ratio was 27 percent, with nine percent of patients having a graft obstructed in the greater than or equal to 50% to <100% range and 18 percent of patients having a graft occluded 100%. The reported MACCE scale for CABG patients at 15 months was nine percent.
"The information announced nowadays from SYNTAX-LE MANS will offer earnest insights for doctors as they evaluate treatment options for challenging left main patients," said Keith Dawkins, M.D., Associate Chief Medical Officer of Boston Scientific. "We are encouraged by the high rise stent patency proportion at 15 months, which increases our confidence in the application of PCI in this high-risk population. The results support formerly announced outcomes with PCI and CABG in patients with left main disease."
The safety and effectiveness of the TAXUS Express2 Stent System own not been established in patients with left main or three-vessel disease.
Boston Scientific is a worldwide developer, manufacturer and marketer of medical devices whose products are used in a wide reach of interventional medical specialties.
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Source: Boston Scientific Corporation
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