PEGASUS – Ticagrelor in secondary prevention on patients after a myocardial infarction

Czech version

Authors: Jindřich Špinar ^1,3; Lenka Špinarová ²; Jiří Vítovec ²
Authors‘ workplace: Interní kardiologická klinika LF MU a FN Brno, pracoviště Bohunice, přednosta prof. MUDr. Jindřich Špinar, CSc., FESC ¹; I. interní kardio-angiologická klinika LF MU a FN u sv. Anny Brno, přednostka prof. MUDr. Lenka Špinarová, CSc., FESC ²; Mezinárodní centrum klinického výzkumu – FN u sv. Anny Brno ³
Published in: Vnitř Lék 2015; 61(6): 511-515
Category: Original Contributions

Overview

Background:
Ticagrelor is a P2Y₁₂ receptor antagonist that has been shown to reduce ischemic events for up to a year after an acute coronary syndrome. The efficacy and safety of long-term ticagrelor therapy beyond 1 year after a myocardial infarction is unknown.

Methods:
We randomized 21,162 patients with a history of myocardial infarction within the prior 1–3 years in a double-blind 1 : 1 : 1 fashion to ticagrelor 90 mg twice daily, ticagrelor 60 mg twice daily, or placebo, all with low-dose aspirin, and followed them for a median of 33 months. The primary efficacy endpoint was the composite of cardiovascular death, myocardial infarction, or stroke. The primary safety endpoint was TIMI major bleeding.

Results:
Both doses of ticagrelor significantly reduced the primary combined efficacy endpoint compared to placebo with Kaplan-Meier rates at 3 years of 7.85 % with ticagrelor 90 mg, 7.77 % with ticagrelor 60 mg, and 9.04 % with placebo (HR for ticagrelor 90 mg vs placebo 0.85, 95% CI 0.75–0.96, p = 0.0080; HR for ticagrelor 60 mg vs placebo 0.84, 95% CI 0.74–0.95, p = 0.0043). Rates of TIMI major bleeding were higher with ticagrelor (2.60 % for 90 mg, 2.30 % for 60 mg and 1.06 % for placebo, p < 0.001 for each dose against placebo); the rates of intracranial hemorrhage or fatal bleeding were 0.63 %, 0.71 % and 0.60 % in the 3 arms, respectively.

Conclusions:
Treatment of patients more than 1 year after a myocardial infarction with ticagrelor reduces the risk of cardiovascular death, myocardial infarction, or stroke, and increases the risk of major bleeding.

Key words:
myocardial infarction – secondary prevention – ticagrelor

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