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Prasugrel vs. Ticagrelor in acute coronary syndromes: Which one to choose?

Prasugrel vs. Ticagrelor beim akuten Koronarsyndrom: Welche Substanz im klinischen Alltag?

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Zusammenfassung

Das akute Koronarsyndrom (ACS) ist immer noch mit einer erheblichen Morbidität und Mortalität assoziiert. In den letzten beiden Dekaden galt die duale Antiplättchentherapie mit Clopidogrel und Azetylsalizylsäure als medikamentöser Therapiestandard bei Patienten mit ACS. Allerdings hat Clopidogrel auch einige Nachteile wie zum Beispiel ein verzögertes Einsetzen des Therapieeffekts, eine bedeutende interindividuelle Variabilität der Plättchenaggregationshemmung sowie eine reduzierte Wirkung auf Thrombozyten aufgrund von Medikamenteninteraktionen oder Einfluss von genetischen Polymorphismen. Aus diesen Gründen wurden neue Thrombozytenaggregationshemmer entwickelt. Zwei Substanzen der neuen Generation, nämlich Prasugrel und Ticagrelor, wurden von der "European Medicines Agency" (EMA) zugelassen und sind bereits in mehreren Europäischen Ländern verfügbar. Beide Medikamente wurden separat in einem "Mega-Trial" im Vergleich zu Clopidogrel untersucht. Beide Substanzen waren eindeutig effektiver hinsichtlich einer Reduktion eines kombinierten ischämischen Endpunktes im Vergleich zu Clopidogrel und sollten laut aktuellen Richtlinien bei Patienten mit ACS bevorzugt eingesetzt werden. Allerdings existiert bisher keine Studie, die die Wirkung und Sicherheit von Prasugrel und Ticagrelor direkt miteinander verglichen hat. In der Praxis steht die/der klinisch tätige Ärztin/Arzt deshalb vor der Entscheidung, welche Substanz sie/er verwenden sollen. Ziel dieses Manuskripts ist es deshalb, einen Überblick über die vorliegende Literatur zu geben und einen Leitfaden in der Entscheidungsfindung zwischen Prasugrel und Ticagrelor bei Patienten mit ACS für den klinischen Alltag zu liefern.

Summary

Acute coronary syndromes (ACS) are still associated with significant morbidity and mortality. Dual antiplatelet therapy with clopidogrel and acetyl-salicylic acid has become the standard of care for patients with ACS in the last 2 decades. However, clopidogrel has drawbacks including delayed therapeutic effect, significant interindividual variability of platelet aggregation inhibition or reduced action on thrombocytes due to interaction with other drugs or genetic polymorphisms. Consequently, new antiplatelet drugs have been developed. Two of these drugs, namely prasugrel and ticagrelor, have been approved by the European Medicines Agency (EMA) and are already available in many European countries. For each substance a "mega-trial" has been published. Both agents were clearly superior compared to clopidogrel and should be therefore preferred in patients with ACS. However, no study has directly compared efficacy as well as safety of prasugrel and ticagrelor so far. Hence, clinicians will be claimed to decide which one to choose in everyday practice. The aim of this manuscript is to summarize the current literature and to provide a guide for individual decision-making between prasugrel and ticagrelor in ACS in daily routine.

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Correspondence to Matthias Frick.

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Alber, H., Huber, K., Pachinger, O. et al. Prasugrel vs. Ticagrelor in acute coronary syndromes: Which one to choose?. Wien Klin Wochenschr 123, 468–476 (2011). https://doi.org/10.1007/s00508-011-0027-7

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