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12-month clinical and 13-month angiographic outcomes from a randomized trial evaluating the Absorb Bioresorbable Vascular Scaffold vs. metallic drug-eluting.

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Presentation on theme: "12-month clinical and 13-month angiographic outcomes from a randomized trial evaluating the Absorb Bioresorbable Vascular Scaffold vs. metallic drug-eluting."— Presentation transcript:

1 12-month clinical and 13-month angiographic outcomes from a randomized trial evaluating the Absorb Bioresorbable Vascular Scaffold vs. metallic drug-eluting stent in de novo native coronary artery lesions ABSORB JAPAN Takeshi Kimura M.D. and Gregg W. Stone M.D. on behalf of the ABSORB Japan Investigators

2 Disclosure Statement of Financial Interest
Within the past 12 months, I or my spouse/partner have had a financial interest/arrangement or affiliation with the organization(s) listed below. Affiliation/Financial Relationship Company Grant/Research Support Consulting Fees/Honoraria ABBOTT Vascular

3 ABSORB Japan Randomized 2:1 BVS
Prospective, randomized, active control, single-blind, non-inferiority, multi-center Japanese study Inclusion: Patients with up to 2 de novo target lesions in separate native coronary arteries Lesion length ≤ 24 mm, Dmax ≥ 2.5 mm to ≤ 3.75 mm, %DS ≥50% to <100% Exclusion: AMI, EF <30%, eGFR <30 mL/min/1.73m2, LMCA, Ostial lesion, Excessive vessel tortuosity, Heavy calcification, Myocardial bridge, Bifurcation with side branch ≥2 mm Randomized 2:1 BVS Tx. with single study device Diameter: 2.5, mm Length: 8, 12, 18, 28 mm CoCr-EES Tx. with single study device Diameter: 2.5, mm Length: 8, 12, 18, 28 mm Primary Clinical Endpoint: Target Lesion Failure (TLF): Cardiac death, TV-MI, ID-TLR at 12 months Major Secondary Angiographic Endpoint: In-segment Late Lumen Loss at 13 months

4 Patient Flow Chart EES (N=1618) BES (N=1617) BVS (N=266) BES (N=1601)
ABSORB Japan Randomized (N=400) Enrollment from 38 Japanese centers Between April 27, 2013 and December 27, 2013 BVS (N=266) CoCr-EES (N=134) Withdraw consent without POCE: 1 Withdraw consent without POCE: 1 EES (N=1618) BES (N=1617) Intention-to-treat Population (N=398) BVS (N=265) CoCr-EES (N=133) BVS (N=266) BES (N=263) 12-Month Clinical FU Complete (N=397: 99.7%) ) BES (N=1601) BVS (N=264) Between May and October 2011, 3241 patients were randomized from 98 Japanese centers. After excluding 6 patients who withdrew consent, the ITT population consisted of 3235 patients. Complete 2-year clinical follow-up was achieved in 98.4% of patients. CoCr-EES (N=133) 13-Month Angiographic FU Qualified (N=378: 95.0%) BVS (N=252) CoCr-EES (N=126)

5 Baseline Patient Characteristics
ABSORB Japan Baseline Patient Characteristics BVS (266 Patients) CoCr-EES (134 Patients) P-value Age (years) 67.1 ± 9.4 67.3 ± 9.6 0.90 Male 79% 74% 0.25 BMI (kg/m2) 24.0 ± 3.0 24.3 ± 3.0 0.41 Current Tobacco Use 20% 22% 0.69 Stable CAD 90% 84% 0.054 Diabetes 36% 0.96 Prior PCI/CABG 38% 0.70 Prior MI 16% 24% 0.06 eGFR <60 (mL/min) 32% 28% 0.37

6 Baseline QCA ABSORB Japan BVS (275 Lesions) CoCr-EES (137 Lesions)
P-value Lesion Length (mm) 13.4 ± 5.3 13.3 ± 5.5 0.87 Pre RVD (mm) 2.71 ± 0.45 2.79 ± 0.46 0.10 Pre MLD (mm) 0.96 ± 0.33 0.99 ± 0.36 0.40 Pre %DS (%) 64.5 ± 11.1 64.7 ± 10.9 0.91

7 Procedural Information
ABSORB Japan Procedural Information BVS (266 Patients) (275 Lesions) CoCr-EES (134 Patients) (137 Lesions) P-value Single Target Lesion 97% 98% 0.76 Non-study Lesion Treated 7.5% 1.00 % Pre-Dilatation 100% % Post Dilatation 82% 77% 0.25 Bailout Procedure 1.8% (5/275) 0.7% (1/137) 0.67 - By BVS 4 0.31 - By CoCr-EES 1 Total Device Length (mm) 20.2 ± 5.8 19.5 ± 5.8 0.22

8 Acute Success and Procedure Duration
ABSORB Japan Acute Success and Procedure Duration Devise Success Procedure Success Procedure Duration P=1.00 P=0.72 P=0.04 49.8±24.8 min 44.9±21.7 min BVS CoCr-EES BVS CoCr-EES BVS CoCr-EES Device success: Successful deployment of the assigned device at the target lesion with <30% residual stenosis Procedure success: Device success without TLF during the hospital stay (maximum of 7 days)

9 Balloon Diameters and Inflation Pressure
ABSORB Japan Balloon Diameters and Inflation Pressure Nominal Nominal Expected Nominal Expected Expected Pre-dilatation 11.6 ± 3.8 atm. 11.9 ± 3.7 atm. P=0.52 Deployment 10.4 ± 3.0 atm. 11.2 ± 2.7 atm. P=0.003 Post-dilatation 15.5 ± 4.2 atm. 16.0 ± 3.9 atm. P=0.24 Final Balloon 14.7 ± 4.1 atm. 15.1 ± 4.1 atm. P=0.36 Inflation Pressure Pre-dilatation Deployment Post-dilatation Final Expected diameter was calculated based on the compliance chart of the device

10 Post Procedural QCA ABSORB Japan BVS (275 Lesions) CoCr-EES
P-value RVD Post (mm) 2.75 ± 0.42 2.85 ± 0.43 0.03 In-Device MLD Post (mm) 2.43 ± 0.37 2.64 ± 0.40 <0.0001 In-Device %DS Post (%) 11.6 ± 7.5 7.3 ± 8.1 In-Segment MLD Post (mm) 2.20 ± 0.39 2.27 ± 0.43 0.15 In-Segment %DS Post (%) 20.0 ± 6.7 20.6 ± 8.80 0.49 In-Device Acute Gain (mm) 1.47 ± 0.40 1.65 ± 0.40 In-Segment Acute Gain (%) 1.25 ± 0.41 1.28 ± 0.45

11 Primary Endpoint: 12-Month TLF (through 393 days)
ABSORB Japan Primary Endpoint: 12-Month TLF (through 393 days) 12-Month TLF Upper 95% Confidence Limit of the Difference P=0.85 NI Margin = 8.6% Non-inferiority P < 0.39% 3.95% BVS CoCr-EES The one-sided upper 95% confidence limit for the 0.39% observed difference in event rates was 3.95%, suggesting that any absolute difference between the 2 devices is likely to be small. Likelihood score method by Farrington and Manning

12 12-Month Clinical Outcomes (~393-Day )
ABSORB Japan 12-Month Clinical Outcomes (~393-Day ) BVS (N=266) CoCr-EES (N=134) P-value TLF (CD/TV-MI/ID-TLR) 4.2% (11/265) 3.8% (5/133) 0.85 - Cardiac Death 0.0% (0/265) 0.0% (0/133) 1.00 - Target Vessel MI 3.4% (9/265) 2.3% (3/133) 0.76 - Ischemia driven-TLR 2.6% (7/265)

13 12-Month Definite/Probable ST
ABSORB Japan 12-Month Definite/Probable ST 0 days 37 days 208 days 393 days BVS at Risk 266 262 260 257 CoCr-EES at Risk 134 132 131

14 BVS ST Case 1 64 year-old male, Stable angina, Diabetes
ABSORB Japan BVS ST Case 1 64 year-old male, Stable angina, Diabetes Subacute Definite ST Pre Post Day-4 Lesion Length=13.8 mm RVD=2.45 mm %DS=54.5% Pre-dilatation: NCB (2.5 mm, 14 atm) BVS: 2.5x18 mm at 12 atm Post-dilatation NCB (2.75 mm, 18 atm) Final in-scaffold MLD=2.27 mm Final in-segment MLD=2.05 mm Chest pain while playing tennis No APT issue CK: 1259 U/L

15 BVS ST Case 2 55 year-old male, Stable angina Subacute Definite ST
ABSORB Japan BVS ST Case 2 55 year-old male, Stable angina Subacute Definite ST Pre Post Day-4 Lesion Length=12.5 mm RVD=2.8 mm %DS=55.1% Pre-dilatation: SCB (3.0 mm, 6 atm) BVS: 3.0x18 mm at 16 atm Post-dilatation NCB (3.5 mm, 12 atm) Final in-scaffold MLD=2.4 mm Final in-segment MLD=2.11 mm No APT issue CK: 5292 U/L

16 BVS ST Case 3 64 year-old male, Stable angina Subacute Definite ST
ABSORB Japan BVS ST Case 3 64 year-old male, Stable angina Subacute Definite ST Pre Post Day-5 Lesion Length=12.7 mm RVD=2.32 mm %DS=61.2% Pre-dilatation: SCB (2.25 mm, 14 atm) BVS: 2.5x18 mm at 8 atm Post-dilatation NCB (2.75 mm, 18 atm) Final in-scaffold MLD=1.69 mm Final in-segment MLD=1.51 mm No APT issue CK: 2090 U/L

17 BVS ST Case 4 75 year-old female, Silent ischemia, Diabetes
ABSORB Japan BVS ST Case 4 75 year-old female, Silent ischemia, Diabetes Late Definite ST Pre Post Day-139 Lesion Length=20.3 mm RVD=2.00 mm %DS=71.8% Pre-dilatation: SCB (2.5 mm, 10 atm) BVS: 2.5x18 mm at 10 atm No post-dilatation Final in-scaffold MLD=1.84 mm Final in-segment MLD=1.70 mm Discontinuation of both APT CK: 738 U/L

18 Major Secondary Angiographic Endpoint: 13-Month In-Segment LLL
ABSORB Japan Major Secondary Angiographic Endpoint: 13-Month In-Segment LLL 13-Month In-segment LLL Upper 95% Confidence Limit of the Difference NI Margin = mm P=0.74 Non-inferiority P < 0.01 mm 0.13 mm 0.12 mm 0.07 mm BVS CoCr-EES Asymptotic test statistic based on Z test

19 Cumulative Distribution Function Curves for In-segment MLD
ABSORB Japan Cumulative Distribution Function Curves for In-segment MLD Pre 0.96±0.33 mm 0.99±0.36 mm P=0.42 Follow-up 2.08±0.45 mm 2.15±0.50 mm P=0.18 Post 2.21±0.39 mm 2.26±0.43 mm P=0.19

20 ABSORB Japan Imaging Follow-up
Clinical FU Imaging FU The ABSORB Japan had an extensive imaging follow-up protocol including angiography, IVUS, OCT, and MSCT. Post-procedure intracoronary imaging evaluation was mandatory in the IVUS and OCT-1 groups, while it was not allowed in the OCT-2 group.

21 Impact of Post-procedure Intracoronary Imaging
ABSORB Japan Impact of Post-procedure Intracoronary Imaging In-device MLD BVS CoCr-EES P=0.90 P=0.72 P=0.16 P=0.44 Imaging No imaging Post Procedure 13M F/U Post Procedure 13M F/U No complications were noted by the post-procedure intracoronary imaging after BVS implantation. However, in both BVS and EES groups, post-procedure intracoronary imaging did not affect the in-device MLD at post-procedure and at 13-month follow-up.

22 Typical Images – Mid LAD
Excellent BVS MSCT and Matched QCA MSCT QCA Proximal Mean 2.21 2.26 In-device MLD 1.79 1.795 Distal Mean 2.53 2.16 QCA: 2.62 ± 0.45 mm MSCT: 2.01 ± 0.39 mm QCA in-device MLD (mm) QCA: 2.28 ± 0.45 mm MSCT: 2.30 ± 0.44 mm MSCT in-device MLD (mm)

23 Conclusions In the ABSORB Japan trial, BVS demonstrated a similar
mid-term (12-month) clinical safety and efficacy profile as CoCr-EES, with comparable 13-month angiographic outcomes. These positive results lay a solid foundation for continued evaluation of long term outcomes in patients undergoing percutaneous coronary intervention with Absorb BVS.


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