Table 2:

Trials of prasugrel and ticagrelor in acute coronary syndromes

Trial Study population Study groups Outcome/adverse event Intervention; % of patients p value
Prasugrel Clopidogrel
TRITON– TIMI 38 ( 21 ) 13 608 patients with acute coronary syndromes scheduled to have PCI
  • Prasugrel: 60-mg loading dose; 10 mg/d thereafter

  • Clopidogrel: 300-mg loading dose; 75 mg/d thereafter

Cardiac death, MI or stroke (primary outcome) 9.9 12.1 < 0.0012
Death, any cause 3.0 3.2 0.64
Major bleeding 2.4 1.8 0.03
Life-threatening bleeding 1.4 0.9 0.01
TRILOGY ACS ( 22 ) 7 243 patients with unstable angina or acute coronary syndromes without ST-segment elevation without scheduled revascularization
  • Prasugrel: 30-mg loading dose; 10 mg/d thereafter (5 mg/d if age > 75 yr)

  • Clopidogrel: 300-mg loading dose; 75 mg/d thereafter

Cardiac death, MI or stroke (primary outcome) 18.7 20.3 0.45
Major bleeding 2.5 1.8 0.29
Ticagrelor Clopidogrel
PLATO ( 23 ) 18 624 patients with acute coronary syndromes
  • Ticagrelor: 180-mg loading dose; 90 mg twice daily thereafter

  • Clopidogrel: 300–600-mg loading dose; 75 mg/d thereafter

Death, MI or stroke (primary outcome) 9.8 11.7 < 0.001
Death, any cause 4.0 5.1 0.001
Stent thrombosis 2.9 3.8 0.01
Major bleeding 11.6 11.2 0.43
Bleeding unrelated to CABG 4.5 3.8 0.03
Dyspnea 13.8 7.8 < 0.001
Ventricular pauses > 3 s 5.8 3.6 0.01
High-dose ASA Low-dose ASA
CURRENT– OASIS 7 ( 13 ) 25 086 patients with acute coronary syndromes scheduled to have PCI
  • High-dose ASA: 300–325 mg/d

  • Low-dose ASA: 75–100 mg/d

Cardiac death, MI or stroke (primary outcome) 4.2 4.4 0.61
Major bleeding 2.3 2.3 0.90
  • Double-dose clopidogrel: 600-mg loading dose; then 150 mg/d for 6 d and 75 mg/d thereafter

  • Standard-dose clopidogrel: 300-mg loading dose; 75 mg/d thereafter

Double-dose clopidogrel Standard-dose clopidogrel
Cardiac death, MI or stroke (primary outcome) 4.2 4.4 0.30
Major bleeding 2.5 2.0 0.01
  • Note: ASA = acetylsalicylic acid, CABG = coronary artery bypass graft surgery, CURRENT–OASIS 7 = Clopidogrel and Aspirin Optimal Dose Usage to Reduce Recurrent Events–Seventh Organization to Assess Strategies in Ischemic Syndromes, MI = myocardial infarction, PCI = percutaneous coronary intervention, PLATO = Study of Platelet Inhibition and Patient Outcomes, TRILOGY ACS = Targeted Platelet Inhibition to Clarify the Optimal Strategy to Medically Manage Acute Coronary Syndromes, TRITON–TIMI = Trial to Assess Improvement in Therapeutic Outcomes by Optimizing Platelet Inhibition with Prasugrel–Thrombolysis in Myocardial Infarction.