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Related Concept Videos

Epilepsy and Seizures: Overview01:24

Epilepsy and Seizures: Overview

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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...
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Seizures: Classification01:13

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Epilepsy is primarily characterized by unpredictable seizures, either provoked by an identifiable factor, such as injury or illness, or unprovoked, occurring spontaneously without apparent cause.
Seizures are typically classified into two main categories: focal and generalized seizures.
Focal Seizures
Focal seizures originate from specific regions of the brain. These seizures are further sub-classified into two types:
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Related Experiment Video

Updated: Dec 25, 2025

Identification and Classification of Position-specific GABAA Receptor Subunit Missense Variants for Their Role In Hippocampal Pyramidal Neurons
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Recent advances in epilepsy genomics and genetic testing.

Malavika Hebbar1, Heather C Mefford1

  • 1Division of Genetic Medicine, Department of Pediatrics, University of Washington, Seattle, WA, 98105, USA.

F1000Research
|March 24, 2020
PubMed
Summary

Developmental and epileptic encephalopathies (DEEs) are severe early-onset epilepsies. This review explores recent advances in epilepsy genomics and genetic testing to improve diagnosis for patients with DEE.

Keywords:
Chromosomal microarrayDevelopmental and epileptic encephalopathyEpilepsyGene panelsGenetic testingNext generation sequencingNovel genesWhole genome sequencing

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Area of Science:

  • Neuroscience
  • Genetics
  • Pediatric Neurology

Background:

  • Developmental and epileptic encephalopathies (DEEs) are severe early-onset epilepsies.
  • DEEs present with refractory seizures, developmental delays, and poor prognosis.
  • Genetic and phenotypic heterogeneity complicates diagnosis in DEE.

Purpose of the Study:

  • To review recent advances in epilepsy genomics.
  • To discuss current genetic testing options for DEE.
  • To improve understanding of DEE pathogenesis and diagnosis.

Main Methods:

  • Literature review of recent advancements in epilepsy genomics.
  • Analysis of genetic testing strategies for DEE.
  • Synthesis of current knowledge on DEE pathogenesis.

Main Results:

  • Despite advanced genetic testing, over 50% of DEE patients lack a genetic diagnosis.
  • Epilepsy genomics has rapidly expanded the list of known epilepsy genes.
  • Understanding pathogenesis is key to improving diagnostic yield.

Conclusions:

  • Advances in genomics offer new avenues for DEE diagnosis.
  • Further research is needed to identify genetic causes in undiagnosed DEE cases.
  • Improved genetic testing and understanding of pathogenesis are crucial for better patient outcomes.