van Dijkman, SC; Wicha, SG; Danhof, M; Della Pasqua, OE; (2018) Individualised dosing algorithms and therapeutic monitoring for antiepileptic drugs. Clinical Pharmacology & Therapeutics , 103 (4) pp. 663-673. 10.1002/cpt.777.

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Abstract

Pharmacokinetic (PK) models exist for most antiepileptic drugs (AEDs). Yet, their use in clinical practice to assess inter-individual differences and derive individualised doses has been limited. Here we show how model-based dosing algorithms can be used to ensure attainment of target exposure and improve treatment response in patients. Using simulations, different treatment scenarios were explored for 11 commonly used AEDs. For each drug, five scenarios were considered: i. all patients receive the same dose. ii. individual clearance (CL), as predicted by population PK models is used to personalize treatment. iii-v. individual CL, obtained by therapeutic drug monitoring (TDM) according to different sampling schemes is used to personalise treatment. Attainment of steady-state target exposure was used as performance criterion to rank each scenario. In contrast to current clinical guidelines, our results show that patient demographic and clinical characteristics should be used in conjunction with TDM to personalize the treatment of seizures.

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