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First Report of One-Year Outcomes of the REPRISE I Feasibility Study of the Repositionable Lotus Aortic Valve Replacement System Ian T. Meredith.

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Presentation on theme: "First Report of One-Year Outcomes of the REPRISE I Feasibility Study of the Repositionable Lotus Aortic Valve Replacement System Ian T. Meredith."— Presentation transcript:

1 First Report of One-Year Outcomes of the REPRISE I Feasibility Study of the Repositionable Lotus Aortic Valve Replacement System Ian T. Meredith AM MBBS, PhD, FRACP, FCSANZ, FACC On behalf of the REPRISE I Investigators Stephen G. Worthley, MD; Robert J. Whitbourn, MBBS, BMedSc, BSc; Paul Antonis, MBBS; Joseph Montarello, MBBS; Andrew E. Newcomb, MBBS; Dominic J. Allocco, MD; Keith D. Dawkins, MD

2 Disclosures Consultant Fee / Honoraria / Speaker’s Bureau:
Boston Scientific (Modest) Medtronic (Modest) The REPRISE I study is sponsored and funded by Boston Scientific Corporation.

3 Lotus Valve System 1. Preloaded delivery system
3. Central radiopaque marker to aid precise positioning 4. Functions early enabling controlled deployment Fully retrievable and repositionable Adaptive seal designed to minimize paravalvular leak Nitinol Frame Adaptive Seal 2. Simple handle design Locking Mechanism Unsheath, Lock Release Collar Sliding Door Unlock, Resheath Bovine Pericardium Center Marker

4 REPRISE I Study Design OBJECTIVE: Assess acute safety & performance of the Lotus Valve System (23 mm) for TAVR in symptomatic high surgical risk patients with calcified stenotic aortic valves DESIGN: Prospective, single-arm feasibility study PRIMARY ENDPOINT: Device success (VARC-1 definition) without in-hospital MACCE through discharge/7 days SECONDARY ENDPOINTS: Successful repositioning/retrieval of Lotus Valve System, if attempted Incidence of prosthetic aortic valve regurgitation by discharge TTE ”Discharge” is defined as discharge or 7 days post-procedure, whichever comes first MACCE: All-cause mortality, peri-procedural MI ≤72 hours after index procedure, major stroke, urgent or emergent conversion to surgery or repeat procedure. VARC Device Success: Leon, et al. J Am Coll Cardiol 2011, 57:253. TTE=transthoracic echocardiography

5 REPRISE I Key Inclusion Criteria
Age ≥70 years Documented calcified native aortic stenosis AVA <1.0 cm² (or AVA index <0.6 cm²/m²) plus either MPG >40 mmHg or jet velocity >4 m/s (by echocardiography) Symptomatic aortic valve stenosis with NYHA Class ≥II High risk for surgical AVR STS score ≥8% or euroSCORE ≥20% or documented heart team agreement of high risk due to frailty or comorbidities Aortic annulus size mm 23 mm valve size used in study AVA=aortic valve area; MPG=mean pressure gradient; NYHA=New York Heart Association; STS=Society of Thoracic Surgeons

6 Study Flow at 1 Year Intent-To-Treat Population
Intent-To-Treat (N=11) Lotus Valve Implanted (N=11) No Lotus Valve Implanted (N=0) 30-Day Clinical Follow-Up 100% (11/11) 1-Year Clinical Follow-Up 100% (11/11)

7 Baseline Patient Characteristics REPRISE I
Patients (N=11) Age (Years) 83.0±3.6 Gender (Female) 11/11 STS Score (%) 4.9±2.5 Logistic euroSCORE (%) 9.5±4.4 NYHA Class III or IV 5/11 Diabetes, medically treated 2/11 Hypertension, medically treated 10/11 History of coronary artery disease History of PCI or CABG History of cerebrovascular accident Atrial fibrillation CABG=coronary artery bypass graft; PCI=percutaneous coronary intervention; STS=Society of Thoracic Surgeons. Values are mean±SD or n/N

8 Primary Endpoint — Discharge/7 Days REPRISE I
Patients Clinical Procedural Success (per patient) 9/11 Device Success 10/11 Successful access, delivery, deployment, valve positioning, delivery system retrieval 11/11 Intended valve performancea One valve implanted No MACCE through discharge or 7 daysb a: AVA >1.0 cm2 plus either a mean aortic valve gradient <20 mmHg or peak velocity <3m/sec, without moderate/ severe prosthetic valve aortic regurgitation b: Major adverse cardiovascular or cerebrovascular events including all-cause mortality, peri-procedural MI ≤72 hours, major stroke, urgent/emergent conversion to surgery or repeat procedure for valve-related dysfunction Values are mean±SD or n/N

9 REPRISE I – VARC-1 Safety Composite No New Events from 30 Days to 1 Year
Through 30 Days VARC safety composite 3/11 MACCE 1/11 All cause mortality 0/11 Peri-procedural MI (≤72 hours) Major stroke Urgent/emergent conversion to surgery or repeat procedure for valve-related dysfunction Life-threatening/disabling bleeding 2/11a Acute kidney injury - Stage 3 Major vascular complication 1/11b 30 Days New Events 30 – 365 Days VARC safety composite 3/11 MACCE 1/11 All cause mortality 0/11 Peri-procedural MI (≤72 hours) Major stroke Urgent/emergent conversion to surgery or repeat procedure for valve-related dysfunction Life-threatening/disabling bleeding 2/11a Acute kidney injury - Stage 3 Major vascular complication 1/11b a: Events at 14 days (pericardial effusion from pacemaker implant) and 20 days (GI bleed) post procedure b: Left femoral artery dissection treated by cross-over contralateral balloon angioplasty

10 REPRISE I – Additional Outcomes Only 1 New Event From 30 Days to 1 Year
Through 30 Days Disabling bleeding (unrelated to valve implant) 2/11 Major bleeding (unrelated to TAVR access) Minor bleeding Major vascular complication 1/11 Conduction disturbance requiring new pacemaker 4/11 Myocardial infarction 0/11 Minor stroke or transient ischemic attack 90 Days New Events 30 – 365 Days Disabling bleeding (unrelated to valve implant) 2/11 Major bleeding (unrelated to TAVR access) Minor bleeding 3/11 1a Major vascular complication 1/11 Conduction disturbance requiring new pacemaker 4/11 Myocardial infarction 0/11 Minor stroke or transient ischemic attack a: Epistaxis, adjudicated as related to clopidogrel treatment, reported at 90-day visit

11 NYHA Assessment REPRISE I P=0.004 n=1 n=3 n=7 n=1 n=4 n=6 n=1 n=5 n=6
NYHA Class (Patients) n=6 n=3 P value: Wilcoxon signed rank test for paired data

12 Mean Aortic Valve Gradient by Patient
REPRISE I Measurement P value Baseline to Discharge <0.001 Baseline to 1 Year Discharge to 30 Days 0.06 30 Days to 90 Days 0.71 90 Days to 180 Days 0.07 180 Days to 1 Year 0.18 Mean: 53.920.9 Mean Aortic Valve Gradient (mm Hg) Mean: 13.73.7 Mean: 11.73.0 Mean: 12.02.2 Mean: 13.93.8 Mean: 15.44.6 Baseline Discharge 30 Days 90 Days 180 Days 1 Year Independent Core Lab Adjudication P values: Repeated measures and random effects ANOVA model

13 Independent Core Lab Adjudication
Effective Orifice Area by Patient REPRISE I Mean: 1.50.2 Mean: 1.6±0.1 Mean: 1.6±0.2 Mean: 1.6±0.2 Mean: 1.5±0.2 Aortic Valve Area (cm2) Measurement P value Baseline to Discharge <0.001 Baseline to 1 Year Discharge to 30 Days 0.08 30 Days to 90 Days 0.21 90 Days to 180 Days 0.28 180 Days to 1 Year 0.43 Mean: 0.70.2 Baseline Discharge 30 Days 90 Days 180 Days 1 Year Independent Core Lab Adjudication P values: Repeated measures and random effects ANOVA model

14 No Moderate / Severe AR by Independent Adjudication
REPRISE 1 – Aortic Regurgitation Transthoracic Echocardiography 20 40 60 80 100 n=1 n=1 n=1 n=2 n=1 Severe n=1 Moderate % of Patients Mild Trivial None n=8 n=10 n=8 n=10 Paravalvular Central Paravalvular Central Discharge 1 Year No Moderate / Severe AR by Independent Adjudication

15 REPRISE I Summary of Data Through 1 Year
MACCE: 1/11 — Major stroke, post-procedure VARC-1 1-year safety composite: 3/11 2 disabling bleeds (not related to valve implant) (<30 days) 1 major vascular complication (femoral dissection) (Day 0) ​No deaths or myocardial infarctions Significant improvements in NYHA class and TTE measures ​No moderate or severe aortic regurgitation 10/11 patients with no or trivial AR, 1/11 with mild AR Only 1 event (minor bleeding at 90 days) from 30 days to 1 year

16 REPRISE I Conclusions Through 1 Year
Lotus Valve can be positioned precisely & successfully with minimal aortic regurgitation after placement The safety & efficacy of the Lotus Valve are sustained out to 1 year Clinical event rates are very low after the first 30 days Good immediate post-procedure results bode well for the long term The ongoing REPRISE II Study is expected to confirm these data in a larger patient population. 30-Day results for the first 60 patients in REPRISE II will be presented in today’s Hot Line Session: First-in-man in valvular heart disease, 15:40 to 16:40, Room 241

17 Thank You!


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