Gender and Outcomes following Guided De-Escalation of Antiplatelet Treatment in Acute Coronary Syndrome Patients: The TROPICAL-ACS Gender Substudy

Gross, Lisa; Kupka, Danny; Trenk, Dietmar; Geisler, Tobias; Hadamitzky, Martin; Loew, Anja; Orban, Martin; Huber, Kurt; Kiss, Robert Gabor; Merkely, Bela; Huczek, Zenon; Beuthner, Bo Eric; Hein-Rothweiler, Ralph; Baylacher, Monika; Rizas, Konstantinos; Massberg, Steffen; Aradi, Daniel; Sibbing, Dirk und Jacobshagen, Claudius (2019): Gender and Outcomes following Guided De-Escalation of Antiplatelet Treatment in Acute Coronary Syndrome Patients: The TROPICAL-ACS Gender Substudy. In: Thrombosis and Haemostasis, Bd. 119, Nr. 9: S. 1527-1538

Abstract

ObjectivesThis prespecified analysis of the TROPICAL-ACS trial aimed to assess the impact of gender on clinical outcomes and platelet reactivity (PR) following guided de-escalation of dual antiplatelet treatment (DAPT) in acute coronary syndrome (ACS) patients. BackgroundGuided de-escalation of DAPT was recently identified as an effective alternative treatment strategy in ACS. MethodsWe used Cox proportional hazards models and linear regression analysis to assess the interaction of gender with clinical endpoints and PR. ResultsIn both male (n= 2,052) and female (n= 558) patients, the 1-year incidence of the primary endpoint did not differ in guided de-escalation versus control group patients (male: 7.0% vs. 9.0%;hazard ratio [HR], 0.78, 95% confidence interval [CI], 0.57-1.06,p= 0.11;female: 8.4% vs. 9.2%;HR, 0.92, 95% CI, 0.53-1.62,p= 0.76,p(int)= 0.60). The 1-year incidence of combined ischemic events (male: 2.5% vs. 3.3%;HR, 0.76, 95% CI, 0.46-1.26,p= 0.29;female: 2.2% vs. 2.8%;HR, 0.78,95% CI, 0.27-2.25,p= 0.65,p(int)= 0.96) as well as Bleeding Academic Research Consortium >= 2 bleeding (male: 4.6% vs. 6.0%;HR, 0.77, 95% CI, 0.52-1.12,p= 0.17;female: 6.2% vs. 6.4%;HR, 0.99, 95% CI, 0.51-1.92,p= 0.97,p(int)= 0.51) was similar in the guided de-escalation versus control group for both male and female patients. Interaction testing revealed no significant impact of gender on PR levels (prasugrel or clopidogrel) across treatment groups (p(int)= 0.72). ConclusionGuided de-escalation of DAPT appears to be equally safe and effective in women and men. Especially in patients with increased bleeding risk and independent from gender, a guided DAPT de-escalation strategy may be used as an alternative treatment strategy.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Medizin
• Themengebiete: 600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin und Gesundheit
• ISSN: 0340-6245
• Sprache: Englisch