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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

Epilepsy is a chronic neurological disease marked by recurrent, unpredictable seizures. These seizures are caused by abnormal electrical discharges in the brain, leading to behavior, sensation, or consciousness alterations. They can also cause transient impairment of awareness, interfering with daily activities.
Various factors can trigger epilepsy, including genetic factors, brain damage, metabolic causes, and unknown etiology. Diagnosis of epilepsy involves electroencephalography (EEG), which...
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu01:29

Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu

Genetic variations significantly influence drug response through pharmacokinetics, receptor interactions, and biologic milieu modifications. Pharmacokinetic alterations impact drug metabolism and clearance, affecting efficacy and toxicity. Variants in drug-metabolizing enzymes, such as CYP2C9 and CYP2C19, alter drug activation and elimination. For example, CYP2C9 loss-of-function variants require lower warfarin doses to prevent excessive bleeding, while CYP2C19 variants reduce clopidogrel...
Pharmacogenetics of Drug Metabolism: Overview01:27

Pharmacogenetics of Drug Metabolism: Overview

Genetic polymorphism in drug metabolism is crucial to the inter-individual variability observed in drug responses. Drug metabolism primarily involves the chemical modification of drugs and other xenobiotics to enhance their elimination by increasing their polarity. Two main classes of enzymes mediate this biotransformation process: Phase I enzymes, primarily cytochrome P450s, catalyze oxidation and reduction reactions, while other enzymes, such as esterases, mediate hydrolysis, and Phase II...
Antiepileptic Drugs: Potassium Channel Activators01:20

Antiepileptic Drugs: Potassium Channel Activators

Ezocgabine or retigabine, an antiepileptic drug of remarkable efficacy, has revolutionized the management of seizures. It is a potassium channel activator, explicitly targeting the family of Q subtype potassium channels. It enhances the transmembrane potassium currents, regulating neuronal excitability. This action stabilizes the resting membrane potential, a pivotal factor in mitigating the hyperexcitability that characterizes epilepsy.
Ezogabine has gained approval as an adjunctive treatment...
Principles of Pharmacogenetics: Types of Genetic Variants01:27

Principles of Pharmacogenetics: Types of Genetic Variants

The human genome is over 99.9% identical between individuals, yet genetic differences exist at millions of bases. The human genome contains approximately 3 million variant positions per individual, many of which are heterozygous, contributing to genetic diversity and individual traits. Genetic variations include single-nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations (CNVs).SNPs, the most common variation, involve single-base changes in DNA. These can be...
Antiepileptic Drugs: GABAergic Pathway Potentiators01:18

Antiepileptic Drugs: GABAergic Pathway Potentiators

γ-aminobutyric acid or GABA, plays a pivotal role as an inhibitory neurotransmitter in the brain. GABA pathway potentiators, also known as GABAergic drugs, are a class of pharmaceutical agents designed to enhance the functioning of the GABAergic system. These medications primarily treat epilepsy, a neurological disorder characterized by recurrent seizures.
The key GABA pathway potentiators used in epilepsy management are as follows.
Benzodiazepines are a well-known class of drugs used for their...

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Related Experiment Video

Updated: Jun 23, 2026

Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons

Published on: June 6, 2025

Epilepsy pharmacogenetics.

Dalia Kasperaviciūte1, Sanjay M Sisodiya

  • 1Department of Clinical & Experimental Epilepsy, UCL Institute of Neurology, London, UK.

Pharmacogenomics
|May 20, 2009
PubMed
Summary

Pharmacogenomics of anti-epileptic drugs shows large variations in patient response. Future research needs to focus on precise patient phenotyping for effective clinical application of genetic findings in epilepsy treatment.

Area of Science:

  • Pharmacogenomics
  • Neuroscience
  • Clinical Pharmacology

Background:

  • Interindividual variability in anti-epileptic drug (AED) efficacy and adverse effects presents challenges.
  • Despite a decade of research linking genetic polymorphisms to AED dosing, clinical impact remains limited.
  • Previous studies primarily focused on candidate gene selection.

Purpose of the Study:

  • To review the current landscape of epilepsy pharmacogenetics.
  • To highlight the critical role of phenotyping in advancing the field.
  • To discuss essential characteristics for clinically relevant genetic studies in epilepsy.

Main Methods:

  • Review of existing literature on epilepsy pharmacogenetics.
  • Discussion of advancements in genomic technologies (GWAS, WGS).

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Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice
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Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice

Published on: May 16, 2019

Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy
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Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy

Published on: October 19, 2021

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Last Updated: Jun 23, 2026

Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons

Published on: June 6, 2025

Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice
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Electrophoretic Delivery of γ-aminobutyric Acid (GABA) into Epileptic Focus Prevents Seizures in Mice

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Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy
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Behavioral And Physiological Analysis In A Zebrafish Model Of Epilepsy

Published on: October 19, 2021

  • Analysis of phenotyping strategies for genetic association studies.
  • Main Results:

    • Genome-wide association studies and whole-genome sequencing offer hypothesis-free genetic screening.
    • The primary challenge is identifying and studying clinically relevant phenotypes.
    • Current pharmacogenetic findings have had minimal impact on clinical practice.

    Conclusions:

    • Precise phenotyping is crucial for unlocking the clinical potential of epilepsy pharmacogenetics.
    • Future research must focus on defining robust phenotypes to translate genetic discoveries into improved patient care.
    • Integrating genetic information with detailed clinical data is essential for personalized epilepsy therapy.