Platelet reactivity and clinical outcomes in acute coronary syndrome patients treated with prasugrel and clopidogrel

The value of platelet function testing (PFT) in predicting clinical outcomes and guiding P2Y12-inhibitor treatment is uncertain. In a pre-specified sub-study of the TROPICAL-ACS trial, we assessed ischaemic and bleeding risks according to high platelet reactivity (HPR) and low platelet reactivity (L...

Teljes leírás

Elmentve itt :
Bibliográfiai részletek
Szerzők: Aradi Dániel
Gross Lisa
Trenk Dietmar
Geisler Tobias
Merkely Béla Péter
Kiss Róbert Gábor
Komócsi András
Dézsi Csaba András
Ruzsa Zoltán
Ungi Imre
Holdt Lesca
Huber Kurt
Neumann Franz-Josef
Koltowski Lukasz
Huczek Zenon
Dokumentumtípus: Cikk
Megjelent: 2019
Sorozat:EUROPEAN HEART JOURNAL 40 No. 24
doi:10.1093/eurheartj/ehz202

mtmt:30719891
Online Access:http://publicatio.bibl.u-szeged.hu/16893
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520 3 |a The value of platelet function testing (PFT) in predicting clinical outcomes and guiding P2Y12-inhibitor treatment is uncertain. In a pre-specified sub-study of the TROPICAL-ACS trial, we assessed ischaemic and bleeding risks according to high platelet reactivity (HPR) and low platelet reactivity (LPR) to ADP in patients receiving uniform prasugrel vs. PFT-guided clopidogrel or prasugrel.Acute coronary syndrome patients with PFT done 14 days after hospital discharge were included with prior randomization to uniform prasugrel for 12 months (control group, no treatment modification) vs. early de-escalation from prasugrel to clopidogrel and PFT-guided maintenance treatment (HPR: switch-back to prasugrel, non-HPR: clopidogrel). The composite ischaemic endpoint included cardiovascular death, myocardial infarction, or stroke, while key safety outcome was Bleeding Academic Research Consortium (BARC) 2-5 bleeding, from PFT until 12 months. We identified 2527 patients with PFT results available: 1266 were randomized to the guided and 1261 to the control group. Before treatment adjustment, HPR was more prevalent in the guided group (40% vs. 15%), while LPR was more common in control patients (27% vs. 11%). Compared to control patients without HPR on prasugrel (n = 1073), similar outcomes were observed in guided patients kept on clopidogrel [n = 755, hazard ratio (HR): 1.06 (0.57-1.95), P = 0.86] and also in patients with HPR on clopidogrel switched to prasugrel [n = 511, HR: 0.96 (0.47-1.96), P = 0.91]. In contrast, HPR on prasugrel was associated with a higher risk for ischaemic events in control patients [n = 188, HR: 2.16 (1.01-4.65), P = 0.049]. Low platelet reactivity was an independent predictor of bleeding [HR: 1.74 (1.18-2.56), P = 0.005], without interaction (Pint = 0.76) between study groups.Based on this substudy of a randomized trial, selecting prasugrel or clopidogrel based on PFT resulted in similar ischaemic outcomes as uniform prasugrel therapy without HPR. Although infrequent, HPR on prasugrel was associated with increased risk of ischaemic events. Low platelet reactivity was a strong and independent predictor of bleeding both on prasugrel and clopidogrel. 
700 0 1 |a Gross Lisa  |e aut 
700 0 1 |a Trenk Dietmar  |e aut 
700 0 1 |a Geisler Tobias  |e aut 
700 0 1 |a Merkely Béla Péter  |e aut 
700 0 1 |a Kiss Róbert Gábor  |e aut 
700 0 1 |a Komócsi András  |e aut 
700 0 1 |a Dézsi Csaba András  |e aut 
700 0 1 |a Ruzsa Zoltán  |e aut 
700 0 1 |a Ungi Imre  |e aut 
700 0 1 |a Holdt Lesca  |e aut 
700 0 1 |a Huber Kurt  |e aut 
700 0 1 |a Neumann Franz-Josef  |e aut 
700 0 1 |a Koltowski Lukasz  |e aut 
700 0 1 |a Huczek Zenon  |e aut 
856 4 0 |u http://publicatio.bibl.u-szeged.hu/16893/1/2019_Platelet_reactivity_ESC.pdf  |z Dokumentum-elérés