• Pieter-Jan De Kam, Annelieke C Kruithof, Marie-José van Lierop, Matthijs Moerland, Justin Dennie, Matthew D Troyer, Ronald B Langdon, David E Gutstein, Jacobus Burggraaf, and Rachid El Galta.
• Int J Clin Pharm Th. 2014 Aug 1;52(8):631-41.

ObjectiveTo investigate the potential effect of sugammadex on anti-Xa anticoagulantactivity of enoxaparin and the activated partial thromboplastin time (APTT) of unfractionated heparin (UFH).MethodsThis two-part, randomized, double-blind, placebocontrolled, four-period cross-over study was performed in healthy males (18 - 45 years). In each period, subjects received 40 mg enoxaparin (in part 1), 5,000 units UFH (in part 2), or placebo followed by 4 or 16 mg/kg sugammadex, or placebo. Treatments were separated by ≥ 4 days. Primary endpoints were anti-Xa activity and APTT both time-averaged from 3 to 30 minutes post-dose. Geometric mean ratios (GMRs) and their two-sided 90% confidence limits were calculated for anticoagulant plus sugammadex (4 or 16 mg/kg) vs. anticoagulant plus placebo. The pre-specified threshold for a potential effect of clinical relevance was a 90% upper confidence limit (UCL) > 1.50.ResultsIn part 1 (n = 13), the 90% UCLs were 1.07 and 1.08 for GMRs of anti-Xa activity after dosing with 4 and 16 mg/kg sugammadex, respectively. In part 2 (n = 43), the 90% UCLs for GMRs of APTT were 1.06 and 1.15. Neither sugammadex dose produced a treatment effect that met the pre-specified criterion for potential clinical relevance. Treatments were generally well tolerated.ConclusionsIn healthy subjects, treatment with 4 mg/kg and 16 mg/kg sugammadex did not change either anti-Xa activity or APTT to a clinically meaningful extent following pretreatments with enoxaparin or UFH.

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