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The potential impact of CYP2D6 (*2/*4/*10) gene variants among Egyptian epileptic children: A preliminary study

Afaf M Elsaid1, Rasha F Zahran2, Samar M Elmetwaly2

  • 1Genetics Unit, Children Hospital, Mansoura University, Mansoura, Egypt.

Gene
|May 21, 2022
PubMed

Insights

The study found that CYP2D6*2 and CYP2D6*4 gene variants are linked to an increased risk of epilepsy and drug resistance. These findings highlight the role of genetic variations in epilepsy susceptibility and treatment outcomes.

Area of Science:

  • Pharmacogenomics
  • Neurogenetics
  • Molecular Biology

Background:

  • Cytochrome P450 (CYP) isoenzymes are crucial for drug metabolism in neuropsychiatric disorders.
  • Understanding genetic variations in CYP enzymes can impact epilepsy treatment.
  • CYP2D6 plays a significant role in the metabolism of antiepileptic drugs (AEDs).

Purpose of the Study:

  • To investigate the association between CYP2D6 gene variants (*2, *4, *10) and epilepsy susceptibility.
  • To assess the correlation of these variants with resistance to antiepileptic drugs (AEDs).

Main Methods:

  • Genotyping of CYP2D6 variants (*2, *4, *10) using T-ARMS-PCR.
  • Study included 200 participants: 100 healthy controls, 50 AED-responsive epilepsy patients, and 50 AED-resistant epilepsy patients.
  • DNA analysis was performed on genomic samples.

Main Results:

  • CYP2D6*2 and CYP2D6*4 variants showed a significant correlation with increased epilepsy risk compared to controls (P<0.05).
  • CYP2D6*2 was linked to disease risk in AED-responsive patients.
  • CYP2D6*4 was associated with disease risk in AED-resistant patients.
  • CYP2D6*4 (A allele) and CYP2D6*10 (T allele) were linked to higher risk in AED-resistant vs. AED-responsive patients (P=0.008 and P=0.040).

Conclusions:

  • CYP2D6*2 and CYP2D6*4 variants are identified as independent risk factors for epilepsy.
  • CYP2D6*10 variant was not found to be a significant risk factor.
  • Genetic profiling of CYP2D6 may aid in predicting epilepsy risk and AED response.
Abstract

Keywords:
CYP2D6Cytochrome P450Epileptic syndromeGenetic variants

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