Abstract
To explore the incidence and independent risk-factors of secondary carnitine deficiency in Chinese children with epilepsy on valproate monotherapy. The free carnitine and acylcarnitines levels in 299 children with epilepsy on valproate monotherapy between June 2014 and September 2015 were compared with age- and sex-matched 299 healthy controls. Children with valproate monotherapy had lower free carnitine levels [23.86 (10.60) µmol/L] than the controls [36.37 (9.37) µmol/L] (P<0.01). Most acylcarnitines were significantly lower in children with valproate monotherapy than controls. 63 children (21.1%) with epilepsy had carnitine deficiency; 54 were asymptomatic. Female gender (OR 2.1), high alanine aminotransferase levels (OR 1.0) and long duration of VPA treatment (1-12 mo) (OR 1.9) were independent risk factors for secondary carnitine deficiency induced by VPA. Carnitine deficiency with valproate is more likely in females, those with transaminitis, and those receiving the drug for 1-12 months.
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