Peter Sinnaeve1, Gregor Fahrni2, Dan Schelfaut3, Alessandro Spirito4, Christian Mueller5, Jean-Marie Frenoux6, Abdel Hmissi6, Corine Bernaud6, Mike Ufer6, Tiziano Moccetti7, Shaul Atar8, Marco Valgimigli9. 1. Department of Cardiovascular Medicine, University Hospitals Leuven, Leuven, Belgium. 2. Department of Cardiology, University Hospital Basel, University Basel, Basel, Switzerland. 3. Cardiovascular Center Aalst, OLV-Clinic Aalst, Aalst, Belgium. 4. Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland. 5. Department of Cardiology and Cardiovascular Research Institute Basel, University Hospital Basel, Basel, Switzerland. 6. Idorsia Pharmaceuticals Ltd., Allschwil, Switzerland. 7. Cardiology Cardiocentro-Ticino, Lugano, Switzerland. 8. Department of Cardiology, Galilee Medical Center, Nahariya, Israel; Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel. 9. Department of Cardiology, Bern University Hospital, University of Bern, Bern, Switzerland. Electronic address: marco.valgimigli@insel.ch.
Abstract
BACKGROUND: Oral P2Y12 receptor antagonists exhibit delayed onset of platelet inhibition in patients with acute myocardial infarction (AMI). Selatogrel is a potent, highly selective, and reversible P2Y12 receptor antagonist with a rapid onset and short duration of action. OBJECTIVES: This study sought to assess inhibition of platelet aggregation following subcutaneous administration of selatogrel in patients with AMI. METHODS:Patients with AMI were randomized to a single subcutaneous dose of selatogrel of 8 or 16 mg. The primary endpoint was response to treatment (P2Y12 reaction units <100; measured by VerifyNow) at 30 min post-dose. Safety was assessed up to 48 h post-injection. RESULTS: Forty-seven patients received selatogrel 8 mg (n = 24) or 16 mg (n = 23) followed by ticagrelor (n = 43) or clopidogrel (n = 1). The proportion of responders 30 min post-dose was 91% (one-sided 97.5% confidence interval [CI]: 80% to 100%) and 96% (97.5% CI: 87% to 100%) with 8 and 16 mg, respectively (p values for responders >85% target; p = 0.142 and p = 0.009, respectively). Response rates were independent from type of AMI presentation, age, or sex. A similar response rate was observed at 15 min (8 mg: 75% [97.5% CI: 58% to 100%]; 16 mg: 91% [97.5% CI: 80% to 100%]), which was sustained at 60 min post-dose (8 mg: 75% [97.5% CI: 58% to 100%]; 16 mg: 96% [97.5% CI: 87% to 100%]). At 15 min, median P2Y12 reaction units was 51 (range: 4 to 208) for 8 mg and 9 (range: 2 to 175) for 16 mg. Selatogrel was well tolerated, without major bleeding complications. CONCLUSIONS: Single-dose subcutaneous administration of selatogrel in patients with AMI was safe and induced a profound, rapid, and dose-related antiplatelet response. (A Medical Research Study to Evaluate the Effects of ACT-246475 in Adults With Heart Attack; NCT03487445, 2018-000765-36 [EudraCT]).
RCT Entities:
BACKGROUND: Oral P2Y12 receptor antagonists exhibit delayed onset of platelet inhibition in patients with acute myocardial infarction (AMI). Selatogrel is a potent, highly selective, and reversible P2Y12 receptor antagonist with a rapid onset and short duration of action. OBJECTIVES: This study sought to assess inhibition of platelet aggregation following subcutaneous administration of selatogrel in patients with AMI. METHODS:Patients with AMI were randomized to a single subcutaneous dose of selatogrel of 8 or 16 mg. The primary endpoint was response to treatment (P2Y12 reaction units <100; measured by VerifyNow) at 30 min post-dose. Safety was assessed up to 48 h post-injection. RESULTS: Forty-seven patients received selatogrel 8 mg (n = 24) or 16 mg (n = 23) followed by ticagrelor (n = 43) or clopidogrel (n = 1). The proportion of responders 30 min post-dose was 91% (one-sided 97.5% confidence interval [CI]: 80% to 100%) and 96% (97.5% CI: 87% to 100%) with 8 and 16 mg, respectively (p values for responders >85% target; p = 0.142 and p = 0.009, respectively). Response rates were independent from type of AMI presentation, age, or sex. A similar response rate was observed at 15 min (8 mg: 75% [97.5% CI: 58% to 100%]; 16 mg: 91% [97.5% CI: 80% to 100%]), which was sustained at 60 min post-dose (8 mg: 75% [97.5% CI: 58% to 100%]; 16 mg: 96% [97.5% CI: 87% to 100%]). At 15 min, median P2Y12 reaction units was 51 (range: 4 to 208) for 8 mg and 9 (range: 2 to 175) for 16 mg. Selatogrel was well tolerated, without major bleeding complications. CONCLUSIONS: Single-dose subcutaneous administration of selatogrel in patients with AMI was safe and induced a profound, rapid, and dose-related antiplatelet response. (A Medical Research Study to Evaluate the Effects of ACT-246475 in Adults With Heart Attack; NCT03487445, 2018-000765-36 [EudraCT]).
Authors: Davide Capodanno; Deepak L Bhatt; C Michael Gibson; Stefan James; Takeshi Kimura; Roxana Mehran; Sunil V Rao; Philippe Gabriel Steg; Philip Urban; Marco Valgimigli; Stephan Windecker; Dominick J Angiolillo Journal: Nat Rev Cardiol Date: 2021-08-23 Impact factor: 32.419
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