Epileptic encephalopathy

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Inclusion criteria:

  • Recurrent seizures with onset of epilepsy prior to two years of age AND
  • Negative genome wide microarray copy number analysis

 Exclusion criteria:

  • Major structural brain malformation such as cortical malformation, neuronal migration defect AND/OR
  • Known clear biochemical, enzymatic or molecular genetic evidence of
    underlying metabolic cause, e.g. organic aciduria, vitamin B6 metabolism

Prior Genetic Testing guidance:

  • Results should have been reviewed for all genetic tests undertaken, including disease-relevant genes in exome sequencing data. The patient is not eligible if they have a molecular diagnosis for their condition.
  • Genetic testing should continue according to routine local practice for this phenotype regardless of recruitment to the project; results of these tests must be submitted via the ‘Genetic investigations’ section of the data capture tool to allow comparison of WGS with current standard testing.

PLEASE NOTE: The sensitivity of WGS compared to current diagnostic genetic testing has not yet been established. It is therefore important that tests which are clinically indicated under local standard practice continue to be carried out.

Closing statement
These requirements will be kept under continual review during the main programme and may be subject to change.

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