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Evidence Based Secondary Prevention Christopher Cannon, M.D. TIMI Study Group Cardiovascular Division Brigham and Women’s Hospital Boston, MA.

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Presentation on theme: "Evidence Based Secondary Prevention Christopher Cannon, M.D. TIMI Study Group Cardiovascular Division Brigham and Women’s Hospital Boston, MA."— Presentation transcript:

1 Evidence Based Secondary Prevention Christopher Cannon, M.D. TIMI Study Group Cardiovascular Division Brigham and Women’s Hospital Boston, MA

2 Presenter Disclosure Information DISCLOSURE INFORMATION: The following relationships exist related to this presentation: Research grant support from Accumetrics, AstraZeneca, Merck, Merck/Schering-Plough, and Schering-Plough and has spoken at symposia sponsored by and served on scientific advisory boards for AstraZeneca, Bristol-Myers Squibb, Glaxo Smith Kline, Merck, Pfizer, Sanofi-Aventis, Merck/Schering-Plough, and Schering-Plough Christopher P. Cannon, MD

3 2 Phases of ACS Treatment Libby P. Circ 2001;104:365, Acute Long-term (<24hrs) (Discharge) 1.ASA 2.Clopidogrel 3.Heparin/LMWH 4.GP IIb/IIIa inhibitors 5.Beta-blockers 6.Nitrates 7.ACE inhibitors 1.ASA 2.Clopidogrel 3.Beta-blockers 4.ACE Inhibitors 5.Statins 6.Risk factor + Lifestyle Δ’s

4 Two Targets of Therapy in ACS: Culprit + Multiple “Vulnerable” Plaques ACS, acute coronary syndrome. Asakura M, et al. J Am Coll Cardiol. 2001;37:1284-1288. Angiographic & angioscopic images in 58-year-old man with anterior myocardial infarction Multiple “vulnerable” plaques detected in non-culprit segments 10-12 Culprit lesion (#8) detected with thrombus (red) Multiple “vulnerable” plaques detected in non-culprit segments 1-7

5 1.Smoking cessation 2.Achieve optimal weight 3.Daily exercise 4.AHA Diet 5.HTN control BP < 130/85 6.Tight control of glucose in DM 7.Statin for LDL > 130 mg/dL. 8.Lipid-lowering LDL>100mg/dL 9.A fibrate or niacin if HDL < 40 ACC/AHA UA/NSTEMI Guidelines: UA/NSTEMI 2002 Braunwald E, et al. 2002. Available at: http://www.acc.org Risk Factor ModificationMedical Therapy 1.Aspirin 75 to 325 mg/d 2.Clopidogrel (if ASA not tolerated) 3.ASA + clopidogrel for 9 months 4.  -Blocker 5.Statin and diet if LDL >130 mg/dL 6.Lipid-lowering Rx if LDL >100 p diet 7.ACEI if CHF, EF<0.40, HTN, DM

6 051015202530 0 1 2 3 4 5 Pravastatin 40 mg Atorvastatin 80 mg Hazard ratio = 0.72 (CI 0.52,0.99) P=0.046 Days following randomization % of patients with death, MI or,rehospitalization for ACS Death, MI or ACS Rehospitalization In First 30 days KK Ray et al. JACC 2005

7 CHD Event Rates in Secondary Prevention and ACS Trials Updated from - O’Keefe, J. et al., J Am Coll Cardiol 2004;43:2142-6. y = 0.1629x · 4.6776 R² = 0.9029 p < 0.0001 LDL Cholesterol (mg/dl) CHD Events (%) PROVE-IT-PR PROVE-IT-AT CARE-S LIPID-S HPS-S 4S-S HPS-P CARE-P LIPID-P 4S-P 0 5 10 15 20 25 30 507090110130150170190210 TNT 80 TNT 10A2Z 80 A2Z 20 IDEAL S20/40 IDEAL A80

8 High-dose betterHigh-dose worse Odds Reduction Event Rates No./Total (%) High DoseStd Dose -17% 147/2099 (7.0) 172/2063 (8.3) -15% 205/2265 (9.1) 235/2232 (10.5) -21% 334/4995 (6.7) 418/5006 (8.3) -12% 411/4439 (9.3) 463/4449 (10.4) -16% 1097/13798 (8.0) 1288/13750 (9.4) PROVE IT-TIMI 22 A-to-Z TNT IDEAL Total 0.65845111.51872 OR, 0.84 95% CI, 0.77-0.91 p=0.00003 Odds Ratio (95% CI) Meta-Analysis of Intensive Statin Therapy Coronary Death or MI Cannon CP, et al. Cannon CP, et al. submitted

9 High-dose statin betterHigh-dose statin worse Odds Reduction Event Rates No./Total (%) High DoseStd Dose -16% 3972/13798 (28.8) 4445/13750 (32.3) -16% 1097/13798 (8.0) 1288/13750 (9.4) -12% 462/13798 (3.3) 520/13750 (3.8) +3% 340/13798 (2.5) 331/13750 (2.4) -6% 808/13798 (5.9) 857/13750 (6.2) -18% 316/13798 (2.3) 381/13750 (2.8) Coronary Death or Any Cardiovascular Event Coronary Death or MI Cardiovascular Death Non-Cardiovascular Death Total Mortality Stroke 0.512.5 OR 0.82 95% CI, 0.71-0.96 p=0.012 Odds Ratio (95% CI) Meta-Analysis of Intensive Statin Therapy All Endpoints Cannon CP, et al. OR, 0.94 95% CI, 0.85-1.04 P=0.20 OR, 1.03 95% CI, 0.88-1.20 p=0.73 OR, 0.88 95% CI, 0.78-1.00 p=.054 OR, 0.84 95% CI, 0.77-0.91 p=0.00003 OR, 0.84 95% CI, 0.80-0.89 p<0.0001 Cannon CP, et al. JACC 2006; 48: 438 - 445.

10 Lipids “For LDL: Lower is better”

11 Risk CategoryLDL-C GoalInitiate TLC Consider Drug Therapy Very High risk: ACS, or CHD w/ DM,mult CRF <70 mg/dL  70 mg/dL > 70 mg/dL High risk: CHD or CHD risk equivalents (10-year risk >20%) If LDL <100 mg/dl <100 mg/dL (optional goal: <70 mg/dL) Goal <70 mg/dl  100 mg/dL > 100 mg/dL (<100 mg/dL: consider drug Rx) Moderately high risk: 2+ risk factors (10-year risk 10% to 20%) <100 mg/dL  130 mg/dL > 130 mg/dL (100-129 mg/dL: consider drug Rx) Moderate risk: 2+ risk factors ( risk <10%) <130 mg/dL  130 mg/dL > 160 mg/dL Lower risk: 0-1 risk factor <160 mg/dL  160 mg/dL >190 mg/dL ATP III Update 2004: LDL-C Goals and Cutpoints for Therapy in Different Risk Categories Adapted from Grundy, S. et al., Circulation 2004;110:227-39.

12 Clopidogrel + ASA (N=6259) ASA (N=6303) ASA Dose: 75-100 mg (N=1927) 1.9% 3.0% 0.53 100-200 mg (N=7428) 2.8% 3.4% 200-325 mg (N=2301) 3.7% 4.9% Major Bleeding at 1 year by ASA Dose CURE P-Value Peters RJG, et al. Circulation 2003;108:1682-1687

13 Proportion Event-Free CURE: Benefit of Clopidogrel Therapy at Over first year Months 0.90 0.92 0.94 0.96 0.98 1.00 14681012 Weeks Proportion Event-Free 0.90 0.92 0.94 0.96 0.98 1.00 01234 RRR 21% 95% CI 0.67–0.92 P=0.003 Clopidogrel + ASA Placebo + ASA MI, stroke, CV Death: 0–30 days Yusuf, S. et al for THE CURE Trial Investigators. Circ. 2003;107:966-972. 31 days - 1 year RRR 18% 95% CI 0.70–0.95 P=0.009 Clopidogrel + ASA Placebo + ASA

14 Benefit of Clopidogrel in PCI With and Without a Stent Days of Follow up Placebo 300 100 200 0 0.0 0.02 0.04 0.06 0.08 0.10 0.12 Clopidogrel RR: 0.73 (95% CI 0.56-0.95) p=0.02 Clopidogrel Placebo RR: 0.56 (95% CI 0.34-0.95) P=0.03 300 100 200 0 0.0 0.05 0.10 0.15 0.20 Days of Follow up CV Death/MI STENT CV Death/MI NO STENT Mehta SR. ACC 2003 0.14

15 CHARISMA: Treatment Effect on Primary and Secondary Endpoints Bhatt DL, et al. N Engl J Med. 2006;354: Published online. Cumulative incidence of MI, stroke, CV death; N = 15,603 7% RRR RR 0.93 (0.83–1.05) P=0.22 Months 10 8 6 4 2 0 0612182430 Placebo Clopidogrel Events (%) 20 15 10 5 0 0612182430 Months Placebo Clopidogrel 8% RRR RR 0.92 (0.86-0.995) Events (%) P=0.04 Cumulative incidence of MI, stroke, CV death, hospitalization for UA, TIA, revascularization ; * N=15,603 *Coronary, cerebral, or peripheral

16 CHARISMA: Bleeding Endpoints Event rate number of patients (%) Clopidogrel + ASA Placebo + ASAP Severe bleeding Fatal bleeding Intracranial hemorrhage 130 (1.7) 26 (0.3) 104 (1.3) 17 (0.2) 27 (0.3).09.17.89 Moderate bleeding164 (2.1)101 (1.3)<.001 Bhatt DL, et al. N Engl J Med. 2006;354: Published Online. GUSTO criteria; N = 15,603 GUSTO = Global Utilization of Streptokinase and t- PA for Occluded Coronary Arteries.

17 n=3284 n=12,153 N=15,603 CHARISMA: Primary Endpoint Treatment Effect by Asymptomatic vs Symptomatic MI, stroke, CV death *Multiple atherothrombotic risk factors † Documented coronary, cerebrovascular, or peripheral arterial disease ‡ P = 0.046 0.51.01.5 Placebo better Clopidogrel better Asymptomatic* Symptomatic † All patients Hazard ratioRR (95% CI) 1.20 (0.91–1.59) 0.88 (0.77–0.998) ‡ 0.93 (0.83–1.05) Bhatt DL, et al. N Engl J Med. 2006;354:.

18 Primary Endpoint (MI/Stroke/CV Death) in Patients with Previous MI, IS, or PAD “CAPRIE-like Cohort” RRR: 17.1 % [95% CI: 4.4%, 28.1%] p=0.01 Primary outcome event rate (%) 0 2 4 6 8 10 Months since randomization 0 612182430 Clopidogrel + ASA 7.3 % Placebo + ASA 8.8 % Bhatt DL. Presented at ACC 2006. N=9478

19 Nordman AJ, et al. Hot Line Session. World Congress of Cardiology, September 3, 2006, Barcelona.

20 Incidence of Late Stent Thrombosis: > 1 Year RR = 5.7 p = 0.049 RR = 5.0 p = 0.02 p = 0.22 Per 1,000 pts 0 1 2 3 4 5 6 7 DES/BMSSES/BMSPES/BMS Bavry, Kumbhani, Helton, Borek, Mood, Bhatt. AJM 2006. In press

21 Conclusions ACS is a manifestation of diffuse atherothrombosis ACS is a manifestation of diffuse atherothrombosis –Multiple plaques, inflammation + thrombosis Long-term medical Rx to prevent events: 5 drugs “Athero + thrombosis”Long-term medical Rx to prevent events: 5 drugs “Athero + thrombosis” Statins (high-dose) ASA (low-dose) ACE Inhibitor Clopidogrel Statins (high-dose) ASA (low-dose) ACE Inhibitor Clopidogrel Beta-blocker Beta-blocker


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