BIOFLOW-III an all comers registry with a Sirolimus Eluting Stent: Presentation of 1-Year TLF Data in patients with complex lesions Johannes Waltenberger, MD, F.E.S.C. Uniklinik Münster Münster, Germany
Potential conflicts of interest Speaker's name: Johannes L Waltenberger I have the following potential conflicts of interest to report: Honorarium: BIOTRONIK
Orsiro Hybrid DES with Bioabsorbable Polymer The underlying PRO-Kinetic Energy Stent with thin strut (60 μ m) design The hybrid structure: Passive component encapsulates the stent Active component contains bioabsorbable PLLA and sirolimus
Study Design International, prospective, non-randomized, 1,356 ‘All Comers’ patients multicenter, open-label design enrolled between Aug 2011 – March 2012 Primary Endpoint Orsiro Target Lesion Failure* (TLF) at 12-month follow-up * Composite of cardiac death, target vessel Q-wave or non-Q wave MI, Emergent CABG, clinically driven TLR 6-month clinical follow-up Secondary Endpoints 12-month clinical follow-up TLF at 6, 36 and 60 months TVR at 6, 12, 36 and 60 months 36-month clinical follow-up TLR at 6, 12, 36 and 60 months Stent Thrombosis at 6, 12, 36 and 60 months Device & procedural Success 60-month clinical follow-up Coordinating Investigator: Johannes Waltenberger University Hospital Muenster, Germany Source: Waltenberger J. CRT, Washington DC, USA. Oral presentation, February 2015. ClinicalTrials.gov Identifier: NCT01553526 .
Patient and Lesion Characteristics Patient Characteristics Lesion Characteristics N = 1,356 N = 1,738 Age in years (mean ± SD) 66.1 ± 10.7 B2/C type lesions 52.1% (905) Male % (N) 71.6% (971) Bifurcations 16.2% (282) Hypertension 75.9% (1,029) Moderate calcification 23.6% (411) Hypercholesterolemia 60.1% (815) Severe calcification 7.0% (122) 3.0 ± 0.4 Smoking 54.6% (741) RVD (mm) 15.8 ± 9.1 Diabetes mellitus 29.6% (402) Lesion length (mm) 86.3 ± 11.1 Insulin dependent 34.1% (137) Diameter stenosis (%) Non-Insulin dependent 65.9% (265) History of MI 27.7% (376) Stable angina 47.3% (641) Previous PCI 39.6% (537) Source: Waltenberger et al. EuroIntervention 2015; 10-online publish-ahead-of-print March 2015. .
Primary & Major Secondary Endpoint Results TLF at 12 Months – All Subjects 10% 8% TLF 6% 5.1% 4% 2% 0% 0 180 360 Time to Event (days) Major Secondary Endpoints: Device and Procedural Success Devices N = 1,738 Device success 98.8% Procedures N = 1,356 Procedure success 98.2% Source: Waltenberger et at. EuroIntervention 2015; 10-online publish-ahead-of-print March 2015. .
Single & Multivessel Disease (SVD/MVD) Subgroup Analysis Patient Characteristics SVD MVD P-value N = 1050 N = 305 Age in years (mean ± SD) 65.5 ± 10.8 68.0 ± 10.4 0.0003 Hypertension 75.3% (791) 77.7% (237) 0.3942 Hypercholesteremia 59.1% (621) 63.3% (193) 0.1942 Diabetes 29.0% (305) 31.8% (97) 0.3537 Non-Insulin dependent 31.8% (97) 41.2% (40) Insulin dependent 68.2% (208) 58.8% (57) Previous MI 27.7% (291) 27.9% (85) 0.9577 Renal disease 11.9% (125) 11.1% (34) 0.7176 CHF 11.0% (116) 10.5% (32) 0.7841 Previous TIA 5.5% (58) 5.2% (16) 0.8509
Single & Multivessel Disease (SVD/MVD) Subgroup Analysis Lesion and Stent Characteristics SVD MVD P-value N = 1050 N = 305 B2/C type lesions 50.2% (528) 54.8% (377) 0.4669 18.2 ± 5.7 18.0 ± 5.9 Mean stent length (mm) 3.0 ± 0.4 3.0 ± 0.4 Mean stent diameter (mm) Number of Vessels Treated in MVD Group
Multivessel Disease (MVD) Subgroup Analysis 12-month TLF Results 20% MVD SVD 10% 6.7% P=0.1272 4.6% 0% 0 180 360 12-month SVD MVD P-value Secondary Endpoints N = 1050 N = 305 Cardiac Death 1.3% 1.7% 0.5826 MI 2.1% 2.7% 0.5616 TLR 2.8% 3.7% 0.3625 Device Success 98.3% 99.6% 0.0224 Procedural Success 98.4% 97.7% 0.4307
Acute MI Subgroup Analysis Patient Characteristics 12-month TLF Results Acute MI Others P-value N = 442 N = 914 10% Log-rank test: p=0.0128 7.2% 8% Age (mean yrs ± SD yrs) 64.9 ± 12 66.7 ± 11 < 0.0033 6% Hypertension 66.3% (293) 80.5% (736) < 0.0001 4.0% 4% Hypercholesteremia 50.2% (222) 64.9% (593) < 0.0001 2% Diabetes 25.8% (114) 31.5% (288) 0.0326 0% Non-Insulin dependent 61.4% (70) 67.7% (195) 0.1914 0 180 360 Time to Event (days) No Acute MI Insulin dependent 38.6% (44) 32.3% (93) 0.2293 Yes Lesion and Stent Characteristics Device and procedural success Acute MI Others P-value Acute MI Others N = 551 N = 1,187 B2/C type lesions 57.6% (318) 49.5% (587) 0.0013 Device success 98.4% 99.0% 18 ± 6 18 ± 6 Mean stent length (mm) 0.5785 Procedure 97.3% 98.7% success 3.0 ± 0.4 3.0 ± 0.4 Mean stent diameter (mm) 0.0014 Source: Waltenberger. Presentation CRT, USA 2015.
STEMI Subgroup Analysis Patient Characteristics STEMI NSTEMI All others P-value N = 144 N = 293 N = 437 Age in years (mean ± SD) 61.5 ± 11.0 66.7 ± 11.8 66.7 ± 10.2 <0.0001 Hypertension 57.6% (83) 71.0% (208) 80.3% (738) <0.0001 Hypercholesteremia 45.8% (66) 52.6% (154) 64.7% (595) <0.0001 Diabetes 23.6% (34) 27.0% (79) 31.4% (289) 0.0839 Non-Insulin dependent 64.7% (22) 60.8% (48) 67.5% (195) 0.5301 Insulin dependent 35.3% (12) 39.2% (31) 32.5% (94) Previous MI 11.1% (16) 23.9% (70) 31.6% (200) <0.0001 Renal disease 5.6% (8) 15.0% (44) 11.6% (107) 0.0651 CHF 7.6% (11) 7.5% (22) 12.5% (115) 0.0235 Previous TIA 5.6% (8) 7.8% (23) 4.7% (43) 0.1146
STEMI Subgroup Analysis Lesion and Stent Characteristics STEMI NSTEMI All others P-value N = 144 N = 293 N = 919 B2/C type lesions 66.3% (110) 54.0% (204) 49.5% (591) 0.0002 18.6 ± 5.5 17.8 ± 5.8 18.2 ± 5.8 0.2820 Mean stent length (mm) 3.1 ± 0.4 3.0 ± 0.4 3.0 ± 0.4 0.0048 Mean stent diameter (mm) TIMI Flow
STEMI Subgroup Analysis 12-month TLF Results All others STEMI NSTEMI STEMI NSTEMI P-value = 0.0109 8.3% 5.0% 4.0% 12-month STEMI NSTEMI All others P-value Secondary Endpoints N=144 N=293 N = 437 Cardiac Death 2.1% 3.1% 0.7% 0.0047 MI 2.1% 5.6% 1.9% 0.0029 TLR 2.2% 3.6% 2.9% 0.7005 95.8% 99.5% Device Success 99.0% 0.0007 Procedural Success 96.5% 97.6% 98.7% 0.1234
TLF/MACE Rates in STEMI cohorts Orsiro Xience Cypher BioMatrix Nobori BMS BIOFLOW-III BIOSCIENCE BIOSCIENCE LEADERS SORT-OUT V LEADERS COMFORTABLE SORT-OUT V COMFORTABLE N=144 N=211 N=196 N=140 N=225 N=135 AMI N=225 AMI 12m 12m N=575 N=582 12m 9m 12m 9m 12m 12m 12m Source: Pilgrim et al. Lancet 2014. Windecker et al. Lancet 2008. Christiansen et al. Lancet 2013. Raeber et al. JAMA 2012. .
Conclusions In this all-comers setting a low TLF rate of 5.1% was observed within the first 12 months, which implies safety and effectiveness of the Orsiro Hybrid Stent The results observed in this “real world” population demonstrate a low TLF rate comparable to other state of the art DES at 12 months. The low TLF rate is not only observed in the overall cohort, but also in patients with STEMI and multi-vessel disease as seen in this post-hoc analysis In comparison with other published trials in patients with STEMI, the Orsiro Hybrid Stent shows a low TLF rate.
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