Makowska et al. [69] evaluated the relationship between the polymorphisms rs1799853 (430C>T) and rs1057910 (1075A>C) of the CYP2C9 gene and the polymorphism of rs4244285 (c.681G>A) of the CYP2C19 gene, and the incidence of drug-resistant epilepsy in children. Here, CYP2C19 is linked to epilepsy.