Genetic determinants of ASMS pharmacokinetics

Antiepileptic drugGenetic polymorphismsImplicationsReference(s)
Valproic acidCYP2C93, CYP2A64Influence on plasma concentrations may require dosage adjustments[14]
PhenytoinCYP2C92, CYP2C93, CYP2C19*2Reduced metabolism rate, unclear effects on CYP2C19*2, need for dosage adjustments.
CYP2C19 mutations: Carriers may require reduced maintenance doses.
CYP2C93: Associated with increased risk of severe cutaneous adverse reactions
[1517]