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A Randomized Comparison of a Sirolimus-eluting Stent with Biodegradable Polymer versus an Everolimus-eluting Stent with a Durable Polymer for Percutaneous Coronary Revascularization Thomas Pilgrim, MD Swiss Cardiovascular Center Bern University Hospital, Switzerland
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Overall (I-squared = 0·0%, p=0·92) LEADERS 4 years fup ISAR-TEST 4 3 years fup ISAR-TEST 3 2 years fup 20/857 9/1299 1/202 32/850 9/652 2/202 0·58 (0·37, 0·93) 0·62 (0·36, 1·08) 0·50 (0·20, 1·26) 0·50 (0·05, 5·47) 10·10·2250·5 Favours biodegradable polymer DES Favours durable polymer SES BP-DESDP-SES RR (95% CI) Definite ST A Meta-Analysis of Biodegradable Polymer DES versus Durable Polymer Sirolimus Eluting Stents Stefanini G et al. Lancet 2011; 378:1940-8 Overall (I-squared = 0·0%, p=0·79) LEADERS 4 years fup ISAR-TEST 4 3 years fup ISAR-TEST 3 2 years fup 88/857 168/1299 17/202 111/850 95/652 21/202 0·84 (0·71, 0·99) 0·79 (0·60, 1·02) 0·89 (0·70, 1·12) 0·81 (0·44, 1·49) TLR Favours biodegradable polymer DES Favours durable polymer SES 10·10·2250·5 BP-DESDP-SES RR (95% CI)
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Biodegradable Polymer Based DES Platforms Sirolimus – ISAR TEST Biolimus A9 – BioMatrix Nobori, Axxess, XTENT Sirolimus – ORSIRO Sirolimus – Genous Bioengineered R Stent Everolimus - SYNERGYMyolimus – ELIXIR
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Orsiro 1 Hybrid Sirolimus Eluting Stent System Passive component: PROBIO Silicon carbide 2 layer that encapsulates the stent surface, reducing ion release Active component: BIOlute PLLA 3 bioabsorbable polymer matrix Sirolimus (1.4 µg/mm 2 ) Controlled drug release out to 3 months Asymmetric coating with greater drug dose on abluminal side (Ablumial thickness 7.4 µm) Stent platform: PRO-Kinetic Energy Cobalt Chromium, L-605 60 µm struts 1 Manufactured and distributed by BIOTRONIK 2 aSiC:H amorphous silicon carbide 3 Poly-L-lactide In vivo drug release in minipig coronary arteries 0 10 20 30 40 50 60 70 80 90 100 0102030405060708090100 % Drug Release Time (days) Source: Data on file at BIOTRONIK
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BIOSCIENCE Trial NCT01443104 Primary endpoint: Target lesion failure defined as the composite of cardiac death, target vessel myocardial infarction, and clinically-driven target lesion revascularization at 12 months 2100 Patients Orsiro ® Stent system Sirolimus-eluting stent with a biodegradable polymer Xience PRIME ® stent Everolimus-eluting stent with a durable polymer 1:1 Prospective multi-center randomized “all-comers” trial with a non-inferiority design
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Inclusion Criteria 1Age ≥18 years; 2Symptomatic coronary artery disease including patients with chronic stable angina, silent ischemia, and acute coronary syndromes including NSTE-ACS and STE-ACS; 3Presence of one or more coronary artery stenoses >50% in a native coronary artery or a saphenous bypass graft which can be treated with a stent ranging in diameter from 2.25 to 4.0 mm and can be covered with one or multiple stents; 4No limitation on the number of treated lesions, and vessels, and lesion length
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Exclusion Criteria 1Pregnancy; 2Known intolerance to aspirin, clopidogrel, heparin, stainless steel, Sirolimus, Everolimus or contrast material; 3Inability to provide informed consent; 4Currently participating in another trial before reaching first endpoint; 5Planned surgery within 6 months of PCI unless dual antiplatelet therapy is maintained throughout the peri-surgical period
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Follow-up Clinical follow-up (visit) at 12 months; Telephone follow-up at 30 days, 1, 2, and 5 years
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Primary Endpoint Target lesion failure (TLF) in the overall population, defined as the composite of cardiac death, target vessel Q-wave or non-Q wave myocardial infarction (MI) (i.e., Q-wave MI that cannot be attributed to a non-target vessel), clinically driven target lesion revascularization (TLR) and emergent coronary artery bypass grafting (CABG) within 12 months.
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Secondary Endpoints Clinically indicated and not clinically indicated target lesion revascularization (TLR) at 30 days, 1, 2 and 5 years. Clinically indicated and not clinically indicated target vessel revascularization (TVR) at 30 days, 1, 2, and 5 years. TLF composite of cardiac death, target vessel Q-wave or non-Q wave myocardial infarction (MI) (i.e., Q-wave MI that cannot be attributed to a non-target vessel), clinically driven target lesion revascularization (TLR) and emergent coronary artery bypass grafting (CABG)at 30 days, 2, and 5 years. Target Vessel Failure (TVF) at 30 days, 1, 2, and 5 years. Cardiac death at 30 days, 1, 2, and 5 years. All deaths (cardiac and non-cardiac) at 30 days, 1, 2, and 5 years. Myocardial infarction (Q-wave and NQWMI) at 30 days, 1, 2, and 5 years. Definite stent thrombosis at 30 days, 1, 2, 3and 5 years. Definite or probable stent thrombosis at 30 days, 1, 2, and 5 years. Device success, lesion success and procedural success (see definitions).
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Time Schedule EventScreen Procedur e Post -Procedure to Hospital D/c 30 Days1 Yr2 Yrs5 Yrs Type of contactPhoneVisitPhone Inclusion/ exclusion Criteria X Informed consentX Physical examination X Medical and Cardiac history X Anginal StatusXXXXXX CBC, blood chemistry, lipids, X CK, CK-MBXX TroponinXX 12 lead ECGXX Medication regimen XXXXXXX Adverse event and Severe Adverse Event monitoring XXXXXX
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Contacts Dr. med. Thomas Pilgrim Invasive Kardiologie, Inselspital Bern thomas.pilgrim@insel.ch 076 548 44 11
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