Abstract
Background
The extent of P2Y12 inhibition during coronary intervention is an important determinant of ischemic complications. The currently available oral P2Y12 inhibitors are limited by a relatively slow onset of action and variable on-treatment response.
Objective
Our objective was to determine the pharmacodynamic (PD) dose–antiplatelet response relationship and the pharmacokinetics of MDCO-157, an intravenous formulation of clopidogrel complexed with sulphobutylether betacyclodextrin, and to identify the dose level of MDCO-157 that matches the PD effect of oral clopidogrel 300 mg.
Methodology
A randomized open-label crossover study was performed in 33 healthy adult volunteers to determine the pharmacokinetic (clopidogrel and clopidogrel H4 thiol active metabolite) and the PD (vasodilator-stimulated phosphoprotein [VASP]) effects of MDCO-157 at doses of 75, 150, and 300 mg and of oral clopidogrel 300 mg.
Results
Data are presented as %, mean (standard deviation). The maximum effect of P2Y12 receptor inhibition assessed by flow cytometry using VASP was 70.42 (6.7), 69.45 (7.1), and 65.58 (12.6) for intravenous MDCO-157 at doses of 75, 150, and 300 mg, respectively, compared with 56.6 (17.5) with oral clopidogrel 300 mg administration (p < 0.0001). Intravenous administration of MDCO-157 led to a stepwise increase in plasma exposure of clopidogrel, higher than with administration of an oral dose of 300 mg (p < 0.0001). Plasma exposure of H4-thiol also increased with intravenous dose (3.6 ± 2.6, 6.9 ± 4.6, and 12.4 ± 9.1 h·ng/ml for intravenous 75, 150, and 300 mg, respectively) but was lower than with oral administration of a 300-mg dose (34.0 ± 16.0 h.ng/ml; pairwise p < 0.0001).
Conclusions
MDCO-157, an intravenous formulation of clopidogrel complexed with sulphobutylether betacyclodextrin, did not show significant platelet inhibition when administered at doses up to 300 mg. Higher doses with longer infusion may be needed to reach a sufficient threshold of active metabolite generation.
Trial Registration: ClinicalTrials.gov identifier: NCT01860105.
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Dr. Montalescot reports receiving consulting fees from Acuitude, Amgen, AstraZeneca, Bayer, Berlin Chimie AG, Boehringer Ingelheim, Bristol-Myers-Squibb, Brigham Women’s Hospital, Cardiovascular Research Foundation, CME resources, Conway, Daiichi-Sankyo, Eli-Lilly, Europa, Evidera, GLG, Hopitaux Universitaires Genève, Lead-Up, McKinsey & Company, Medcon International, Menarini, Medtronic, MSD, Pfizer, Sanofi-Aventis, Stentys, The Medicines Company, TIMI Study Group, Universität Basel, WebMD, Williams & Connolly, and Zoll Medical; and grant support from ADIR, Amgen, AstraZeneca, Bristol-Myers-Squibb, Celladon, Daiichi-Sankyo, Eli-Lilly, Fédération Française de Cardiologie, Gilead, ICAN, Janssen-Cilag, Pfizer, Recor, Sanofi-Aventis, Stentys. Dr. Silvain reports receiving research grants to the institution from Boehringer-Ingelheim, Daiichi-Sankyo, Eli Lilly, BRAHMS, and Sanofi-Aventis, Fédération Française de Cardiologie and Société Française de Cardiologie, INSERM; consultant fees from Daiichi-Sankyo, Eli Lilly, AstraZeneca, and The Medicines Company; and lecture fees from AstraZeneca, Cordis, Daiichi-Sankyo, Eli Lilly, Iroko Cardio, and STENTYS. Jayne Prats is an employee of The Medicines Company; Ming-yi Hu and Kan He were employees of The Medicines Company. Dr. Collet has received research grants from Bristol-Myers Squibb, Sanofi-Aventis, Eli Lilly, Guerbet Medical, Medtronic, Boston Scientific, Cordis, Stago, Centocor, Fondation de France, INSERM, Fédération Française de Cardiologie, and Société Française de Cardiologie; consulting fees from Sanofi-Aventis, Eli Lilly, and Bristol-Myers Squibb; and lecture fees from Bristol-Myers Squibb, Sanofi-Aventis, and Eli Lilly. Dr. Hulot discloses the following relationships: Data Monitoring Committees: Assistance Publique Hôpitaux de Paris; Honoraria: American College of Cardiology Foundation (Lecturer), Eli Lilly (Steering Committee), Servier (Lecturer); Consulting fees: Daiichi Sankyo (consultant), Imaxio (consultant); Research Grants: Bayer Pharma, Celladon, Cellectis Stem Cells, French Ministry of Health (AOM09191), Institute for Cardiometabolism and Nutrition Foundation, NIH/NHLBI (R01 HL113497), NIH/NGRI (1U01HG006380). The other authors declare no conflicts of interest.
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N. Nicolas: Deceased.
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Collet, JP., Funck-Brentano, C., Prats, J. et al. Intravenous Clopidogrel (MDCO-157) Compared with Oral Clopidogrel: The Randomized Cross-Over AMPHORE Study. Am J Cardiovasc Drugs 16, 43–53 (2016). https://doi.org/10.1007/s40256-015-0145-0
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DOI: https://doi.org/10.1007/s40256-015-0145-0