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Comparison of EVEREST II High Surgical Risk and Continued Access High Surgical Risk Patient Cohorts 1 Year Preliminary Results Michael Rinaldi, Saibal.

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Presentation on theme: "Comparison of EVEREST II High Surgical Risk and Continued Access High Surgical Risk Patient Cohorts 1 Year Preliminary Results Michael Rinaldi, Saibal."— Presentation transcript:

1 Comparison of EVEREST II High Surgical Risk and Continued Access High Surgical Risk Patient Cohorts 1 Year Preliminary Results Michael Rinaldi, Saibal Kar, Scott Lim, Ted Feldman, and the EVEREST II Investigators SCAI 2011 Baltimore, MD

2 Disclosures Consulting Fees/Honoraria Abbott Vascular

3 Percutaneous Mitral Valve Repair
MitraClip® System

4 MitraClip Therapy Worldwide Clinical Experience
Over 3,000 patients have been treated with the MitraClip device worldwide: 75% are considered high risk* for mitral valve surgery 67% have functional mitral regurgitation (MR) 1,453 patients have been enrolled in prospective clinical trials worldwide: 50% are considered high risk* for mitral valve surgery 60% have functional MR Estimates of worldwide clinical experience as of March 31, 2011 * Determination of high surgical risk based on: logistic EuroSCORE ≥ 20%, or STS calculated mortality ≥ 12%, or pre-specified high surgical risk comorbidities.

5 EVEREST High Surgical Risk Clinical Trials
High Surgical Risk Patients Treated with the MitraClip Device in EVEREST II Trials EVEREST High Surgical Risk Clinical Trials EVEREST II – High Risk Trial 78 EVEREST II Continued Access – High Risk Trial 294 TOTAL High Surgical Risk Patients 372 As of April 12, 2011

6 Background EVEREST II Outcomes Through 2 Years
Randomized Controlled Trial (RCT) comparing percutaneous device and mitral valve surgery Percutaneous repair provides increased safety Surgery provides more complete MR reduction Both percutaneous and surgical treatment reduced MR and demonstrated significant clinical benefits High Risk study evaluating MitraClip device Patients experienced reduced MR and significant clinical benefits

7 EVEREST II Continued Access Investigators
T Feldman, J Alexander, R Curran, E Chedrawy, S Smart, M Lampert NorthShore University HealthSystem, Evanston, IL A Wang, D Glower, J Jollis Duke University, Durham, NC M Kellett, P Weldner, R Quinn Maine Medical Center, Portland, ME R Quesada, J Lamelas, N Moreno, R Machado Baptist Hospital of Miami, Miami, FL P Grayburn, B Hamman, R Hebeler, M Mack, W Ryan Baylor University Medical Center, Dallas, TX V Rajagopal, J Kauten, W Mashman Piedmont Hospital, Atlanta, GA J Hermiller, D Heimansohn, K Allen, D Segar The Care Group, Indianapolis, IN M Rinaldi, E Skipper, R Steigel, J Cook, G Rose Carolinas Medical Center, Charlotte, NC S Kar, G Fontana, A Trento, R Kass, W Cheng, R Siegel, K Tolstrup Cedars-Sinai Medical Center, Los Angeles, CA P Whitlow, T Mihaljevic, N Smidera, L Svenssen, E Roselli, L Rodriquez, W Stewart The Cleveland Clinic, Cleveland, OH W Gray, A Stewart, M Williams, M Argenziano, S Homma, R Pizzarello, L Gillam Columbia University, New York, NY; Danville, CT D Steinberg, F Crawford, J Ikonimidis, D Gregg, P Zwerner Medical University of South Carolina, Charleston, SC B Whisenant, S Clayson, B Reid, S Horton, J Orford Latter Day Saints Hospital, Salt Lake City, UT R Smalling, G Letsou, J Walkes, C Loghin Memorial Hermann Hospital, Houston, TX W Pedersen, V Kshettry, F Eales, T Flavin, T Kroshus, R Bae Minneapolis Heart Institute, Minneapolis, MN C Rammohan, C Vial, R Beygui, D Nair, A Prakash El Camino Hospital, Mountain View, CA SC Wong, OW Isom, L Girardi, K Krieger, R Devereux, R Mishra New York Presbyterian Hospital, New York, NY J Slater, A Galloway, G Perk, I Kronzon NYU Medical Center, New York, NY C Ruiz, D Loulmet, V Subramanian, I Kronzon, N Marino Lenox Hill Hospital, New York, NY R Kipperman, S Lucas, RM Bodenhamer, J Randolph, J Williams Oklahoma Heart Hospital, Okalahoma City, OK Z Hijazi, R March, K Cao, J Soble Rush University Medical Center, Chicago, IL P Kramer, B Castlemain, A Schwartz, L Crouse, V Pasnoori Shawnee Mission Medical Center, Shawnee Mission, KS A Berke, N Robinson, R Colangelo, P Damus, H Fernandez, J Taylor, N Bercow, A Katz St. Francis Hospital, Long Island, NY T Bajwa, D O’Hair, D Kress, K Sagar St. Luke’s Medical Center, Milwaukee, WI M Sanz, S Tahta, JM Maxwell, B Berry, J Knapp St. Patrick's Hospital & Health Science Ctr, Missoula, MT M Reisman, W Curtis, D Gartman, J Teply, D Warth, K Krabill Swedish Medical Center, Seattle, WA P Fail, K Paape, T Fudge, M Trotter, M Allam, E Feinberg, V Tedesco, D Solet Terrebonne General Medical Center, Houma, LA R Low, N Young, K Shankar, R Calhoun, W Bommer University of California at Davis, Sacramento, CA J Carroll, J Cleveland, R Quaife University of Colorado Health Sciences Center, Denver, CO H Herrmann, M Acker, YJ Woo, F Silvestry, S Wiegers University of Pennsylvania, Philadelphia, PA S Bailey, E Sako, J Erikson University of Texas Health Sciences Ctr, San Antonio, TX DS Lim, I Kron, J Kern, J Dent, H Gutgesell University of Virginia, Charlottesville, VA R Kipperman, J Brown, D Cohen, H Hamrah Morristown Memorial Hospital, Morristown, NJ K Kent, S Boyce. P Sears-Rogan Washington Hospital Center, Washington DC J Lasala, M Moon, R Damiano, B Lindman, A Zajarias, J Madrazo Washington University Medical Center, St. Louis, MO G Hanzel, F Shannon, M Sakwa, A Abbas, M Gallagher, P Markovitz William Beaumont Hospital, Royal Oak, MI Interventional Cardiologist, Cardiac Surgeon, Echocardiologist

8 Purpose To present initial safety and effectiveness data of MitraClip device in Continued Access “real world” high surgical risk patients Enrollment is ongoing To compare initial Continued Access high surgical risk study results to EVEREST II high surgical risk study results To assess the impact of operator learning on outcomes of high surgical risk patients

9 Key Eligibility Criteria EVEREST II and Continued Access High Surgical Risk Patients
All high risk patients were enrolled using the same inclusion/exclusion criteria KEY INCLUSION CRITERIA Predicted procedural mortality risk ≥ 12% (STS calculated or Surgeon estimated based on specific co-morbidities) Symptomatic significant (3+ or 4+) MR Etiology: Degenerative or Functional Primary regurgitant jet originates from leaflet mal-coaptation at A2 / P2 region KEY EXCLUSION CRITERIA Evidence of an AMI in 2 weeks prior EF ≤ 20% and/or LVESD > 60mm Leaflet anatomy which may preclude MitraClip device implantation / proper positioning Prior MV leaflet surgery Echo evidence of intra-cardiac mass, thrombus, vegetation Active endocarditis Clip implant criteria Mitral valve area < 4 cm2 Flail gap ≥ 10 mm, Flail width ≥ 15 mm Coaptation length < 2 mm

10 High Surgical Risk Concurrent Control Group
Control group includes 36 patients screened for EVEREST II – High Surgical Risk All patients met clinical eligibility criteria All patients had significant MR (3+ to 4+) and met high surgical risk criteria Baseline co-morbidities well matched with EVEREST II High Surgical Risk Cohort Management of MR through 1 year 86% medical management 14% mitral valve surgery Of the 5 patients who had MV surgery within 12 months One (DMR) had an MV replacement and died at 7 months post One (FMR) had MV repair and died at 4 months post One (FMR) had MV repair and CABG and died at 3 months Two (DMR) had MV repair and were alive at 12 months post 36 patients retrospectively consented and followed to determine 1 year mortality 86% medical management 14% mitral valve surgery

11 Mitral Valve Anatomic Criteria High Surgical Risk Concurrent Control (N=36)
22% who met all criteria were not treated because, a) study stopped before these patients were treated or patients withdrew and did not want to be treated

12 EVEREST II High Surgical Risk Cohort Enrollment
EVEREST High Surgical Risk Trial^ N = 78 Enrolled REALISM High Surgical Risk Trial^ N = 294 Enrolled 1 Year N = 78 1 Year N = 133 EVEREST II High Surgical Risk Cohort With 1 Year Follow-Up^ N = 211 * As of April 12, 2011, ^ Enrolled by February 28, 2010

13 Patient Accountability EVEREST II and Continued Access High Surgical Risk Patients
With 1 Year Follow-up EVEREST II High Surgical Risk Patients N = 78 Continued Access High Surgical Risk Patients N = 133 N = 3 Withdrawals N = 5 Withdrawals N = 75 1 Year Analysis N = 128 1 Year Analysis 96% of patient data available for analysis Enrolled by 28 Feb 2010

14 Baseline Demographics and Co-Morbidities EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (N = 78) Continued Access High Surgical Risk Patients (N = 133) p-value Age, years, Mean ± SD 77 ± 10 76 ±11 0.43 Estimated Mortality Risk* (%) 18 ± 8 19 ± 8 0.73 Gender, male (%) 63 59 0.66 Coronary Artery Disease (%) 84 80 0.47 Atrial Fibrillation (%) 62 65 0.76 Moderate – Severe Renal Disease (%) 23 35 0.07 Prior CV Surgery (%) 58 0.89 Prior MI (%) 56 45 0.15 NYHA Class III/IV (%) 90 0.23 Functional MR (%) 78 0.008 LVEF, Mean ± SD (%) 54 ± 14 46 ± 13 < 0.001 LVID-s, Mean (cm) 3.9 ±1.1 4.5 ± 1.0 *STS risk calculated or surgeon estimate based on prespecified co-morbidities

15 Implant Rate and Procedural Results EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (N = 78) Continued Access High Surgical Risk Patients (N = 133) p-value MitraClip Implant Rate (%) 96 95 0.80 0 MitraClips 4 5 n/a 1 MitraClip 59 62 2 MitraClips 37 33 MR ≤ 2+ at discharge, all patients (%) 72 88 0.009 MR ≤ 2+ at discharge for patients with MR ≥ 3+ at baseline (%) 71 81 0.20 Procedural Results (min) Mean Procedure Time 190 153 < 0.001 Mean Device Time 145 117 0.005 Mean Fluoroscopy Duration 53 39

16 Implant Rate and Procedural Results EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (N = 78) Continued Access High Surgical Risk Patients (N = 133) p-value Post-Procedural Results ICU Duration (hours) 52 25 0.005 Hospital Stay (days) 3.9 2.5 0.05 Discharged To, (%) 0.26 Home 80 87 Home With Home Health Care 10 8 Nursing Facility 3 Died Prior to Discharge 4 2

17 Predicted vs Observed 30 Day Mortality EVEREST II and Continued Access High Surgical Risk Patients
18.2% 18.2% P = 0.34 7.7% 3.8% N = 78 N = 133

18 30 Day MAE EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (N = 78) # (%) Patients Continued Access High Surgical Risk Patients (N = 133) p-value Death 6 (7.7%) 5 (3.8%) 0.34 Major Stroke 2 (2.6%) 4 (3.0%) > 0.99 Re-operation of Mitral-Valve n/a Urgent / Emergent CV Surgery 1 (0.8%) Myocardial Infarction 0.56 Renal Failure 3 (3.8%) 0.14 Deep Wound Infection Ventilation >48 hrs 2 (1.5%) 0.63 New Onset Permanent Atrial Fib Septicemia GI Complication Requiring Surgery 1 (1.3%) 0.37 Transfusions ≥ 2 Units 14 (17.9%) 16 (12.0%) 0.31 Total 21 (26.9%) 22 (16.5%) 0.08 Total Excluding Transfusions 10 (12.8%) 10 (7.5%) 0.23

19 Investigator MitraClip Procedure Experience EVEREST II and Continued Access High Surgical Risk Patients EVEREST II High Surgical Risk Patients (N = 78) Continued Access High Surgical Risk Patients (N = 133) p-value Number of Operators 25 34 Operator Experience: Rolling average number of cases performed 10 23 < Median (Inter-quartile range) 7 (5, 16) 17 (8, 27) * Includes patients treated in all EVEREST studies

20 Baseline Demographics and Co-Morbidities EVEREST II, Continued Access and Concurrent Control
EVEREST II High Risk Patients (N = 78) Continued Access High Risk Patients (N = 133) Concurrent Control (N = 36) Age, years, Mean ± SD 77 ± 10 76 ±11 77 ± 13 Estimated Mortality Risk (%) 18 ± 8 19 ± 8 17 ± 7 Gender, male (%) 63 59 50 Coronary Artery Disease (%) 84 80 71 Atrial Fibrillation (%) 62 65 53 Moderate – Severe Renal Disease (%) 23 35 31 Prior CV Surgery (%) 58 Prior MI (%) 56 45 36 NYHA Class III/IV (%) 90 Functional MR (%) 78 64 LVEF, Mean ± SD (%) 54 ± 14 46 ± 13^ 55 ± 18 LVID-s, Mean (cm) 3.9 ±1.1 4.5 ±1.0^ 3.8 ±1.1 ^p<0.001, REALISM HR vs CC

21 Kaplan-Meier Freedom from Death At 1 Year EVEREST II, Continued Access and Concurrent Control
EVEREST II High Risk 75.6% p = vs CC Continued Access High Risk 75.2% p = vs CC Concurrent Control 55.6% # At Risk EVEREST II High Risk REALISM High Risk Concurrent Control 0 Days 30 Days 6m 1yr 78 72 64 58 133 126 115 53 36 32 28 20

22 Kaplan-Meier Freedom from MV Surgery At 1 Year EVEREST II and Continued Access High Surgical Risk Patients At 1 Year EVEREST II High Risk 100% Continued Access High Risk 96.8% # At Risk EVEREST II High Risk REALISM High Risk 0 Days 30 Days 6m 1yr 78 72 64 58 133 126 115 53

23 Core Lab MR Grade at 1 Year (matched) EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (n=54 matched cases) Continued Access High Surgical Risk Patients (n=69 matched cases) 78% 3+ 4+ 2+ 1+ p < 83% 0+

24 LV End Diastolic and Systolic Volumes EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (n=54 matched cases) Continued Access High Surgical Risk Patients (n=63 matched cases) 158 143 89 80 p = p = 0.011 172 140 82 72 Volume (mL) p < p = Baseline 1 year

25 NYHA Functional Class at 1 Year EVEREST II and Continued Access High Surgical Risk Patients
EVEREST II High Surgical Risk Patients (n=54 matched cases) Continued Access High Surgical Risk Patients (n=89 matched cases) II III IV I P < 74% 84%

26 SF-36 Quality of Life Scores at 1 Year EVEREST II and Continued Access High Surgical Risk Patients
Baseline 1 Year Physical Component Mental Component p < 0.06 p < p < 0.05 p < 0.001 Interesting to observe 2+ control, though sample size is too small to conclude QOLimproves similarly for both mechanisms of MR reduction regardless of the overall reduction in MR achieved. Table 13: Change in SF-36 Quality of Life Score from Baseline 1 year Baseline 1 year Baseline 1 year Baseline 1 year EVEREST II HR n=47 matched Continued Access HR n=70 matched EVEREST II HR n=47 matched Continued Access HR n=70 matched

27 Hospitalization for CHF EVEREST II and Continued Access High Surgical Risk Patients
1 Year Prior to MitraClip 1 Year Post MitraClip EVEREST II High Surgical Risk Patients Continued Access High Surgical Risk Patients p=0.02 p=0.0002 48% Reduction 45% Reduction 1 Year Prior N=78 1 Year Post N=75 1 Year Prior N=133 1 Year Post N=128 *CHF hospitalizations per patient-year

28 Summary Results consistent with previously demonstrated data in high surgical risk patients MitraClip procedure safe MitraClip device provides significant MR reduction and clinical benefits LV function, NYHA Function Class and Quality of Life (SF-36) Procedural safety improved with increased experience Significantly decreased procedure time with comparable effectiveness Significantly decreased post-procedure ICU time and hospital stay Decreased 30-day mortality

29 Conclusion The MitraClip procedure provides significant clinical benefits in select patients with significant MR who are at high risk for surgical mortality.


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