ArticleThe journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG2024
Impact of Age and Concurrent Antiseizure Medication Use on Lacosamide Dose to Concentration Ratio and Dosing in Pediatric Patients.
Article in The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Concentration-to-dose ratio as a predictor of lacosamide efficacy in Chinese children with epilepsy: a single-center retrospective cohort study.Frontiers in pharmacology · 2026Article
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5 authors.
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Abstract
objectiveTo evaluate age, adjunctive antiseizure medication (ASM), and specific ASMs on lacosamide (LCM) weight normalized dose-to-concentration ratio (DCR) and US Food and Drug Administration (FDA) dosing guidelines in pediatric patients.
methodsPatients 1 mo to ≤18 years with a LCM serum concentration between October 2009 and June 2017 were considered. Demographics, LCM DCR, and adjunctive ASM were recorded. LCM DCR/hr was used as a surrogate for clearance. Data were stratified by age (1 mo-< 2 yr; ≥ 2-6 yr; ≥ 6-12 yr; and ≥12-≤18 yr), FDA dosing weights, and ASM potential to interaction with LCM.
resultsThere were 646 sera (380 patients) with median dose 8.36 mg/kg/day (IQR, 5.92-11.16). 50.2% of doses were within FDA-weight guidelines; however, 40.4% exceeded recommendations. Most (81.3%) LCM concentrations were between 2 and 12 mg/L. A difference existed in DCR between ages, with those <2 years having the highest DCR (p < 0.001). Moving across age groups, the DCR decreases by 30.7%, 50.5%, and 63.4%. There was a weak (r
conclusionsThe correlation between age and DCR was weak, accounting for 6% of variability. Strong inducers significantly increased DCR. Synergy may exist when multiple inducers are given. Weak inhibitors did not affect DCR. Those ≥6 to 11 kg, ≥30 to 50 kg, and those given strong inducers may require larger -initial LCM doses. Serum concentrations should be used to individualize dosing, especially in those receiving strong inducers.
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