Neurodevelopmental effects of antiepileptic drugs

Area of Science:

• Neurology
• Teratology
• Genetics

Background:

• Epilepsy affects women of childbearing age, necessitating treatment during pregnancy.
• Antiepileptic drugs (AEDs) are crucial for managing maternal seizures but pose risks to fetal development.
• Children of mothers with epilepsy have an increased risk of congenital anomalies and neurodevelopmental deficits.

Purpose of the Study:

• To review the current evidence on the risks of in utero antiepileptic drug (AED) exposure to fetal development.
• To discuss the interplay between genetic predisposition and AED exposure in causing birth defects.
• To provide recommendations for optimizing AED therapy in pregnant women with epilepsy.

Main Methods:

• Review of existing literature on epilepsy, pregnancy, and teratogenicity of antiepileptic drugs.
• Analysis of studies investigating the mechanisms of AED-induced developmental toxicity.
• Synthesis of clinical recommendations for managing epilepsy during pregnancy.

Main Results:

• While most children are unaffected, in utero AED exposure is linked to increased risks of anatomic and cognitive impairments.
• Genetic predisposition likely contributes to the susceptibility of certain fetuses to AED-related defects.
• AED polytherapy appears to elevate the risk compared to monotherapy, though specific drug risks require further delineation.

Conclusions:

• The benefits of seizure control in pregnant women with epilepsy generally outweigh the risks of AED exposure.
• AED monotherapy at the lowest effective dose is recommended when treatment is necessary.
• Routine prenatal supplementation with folate and multivitamins is advised for women of childbearing age on AEDs.