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Solving the unsolved genetic epilepsies: Current and future perspectives.

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Summary
This summary is machine-generated.

Many epilepsy cases remain genetically undiagnosed after exome/genome sequencing. This review explores advanced genomic and multi-omic approaches to improve genetic diagnoses for epilepsy patients.

Keywords:
DNA methylationepilepsyepilepsy geneticsmetabolomicsnon-coding regionsre-analysissomatic mosaicismtranscriptomics

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Area of Science:

  • Genetics
  • Genomics
  • Epilepsy Research

Background:

  • Exome and genome sequencing are standard epilepsy diagnostics but often yield unsolved cases.
  • Reasons for negative results include non-genetic causes, polygenic inheritance, novel genes, reduced penetrance, mosaicism, and variant classification challenges.

Purpose of the Study:

  • To review diagnostic options beyond standard exome/genome sequencing for epilepsy.
  • To highlight emerging techniques that may improve genetic diagnosis in the near future.

Main Methods:

  • Re-analysis of existing sequencing data with updated knowledge or changing phenotypes.
  • Advanced sequencing techniques like long-read sequencing for mosaicism and structural variants.
  • Exploration of the non-coding genome, including regulatory elements.
  • Complementary methods such as transcriptomics, DNA methylation, and metabolomics.

Main Results:

  • These advanced methods can identify genetic causes missed by traditional sequencing.
  • They offer potential solutions for variants of unknown significance.
  • Emerging tools promise to enhance diagnostic yield for complex epilepsy cases.

Conclusions:

  • Beyond exome/genome sequencing, novel genomic and multi-omic strategies are crucial for undiagnosed epilepsy.
  • These advanced techniques are expected to become increasingly integrated into clinical practice.
  • Improved diagnostic capabilities will facilitate precision medicine for epilepsy patients.