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EARLY MYOCLONIC ENCEPHALOPATHY

GENETICS

PATTERN OF INHERITANCE

The condition is usually de novo, but this depends on the underlying etiology as metabolic disorders may be inherited in Mendelian fashion.

KNOWN GENES

Genetic etiologies are recognized (e.g. ErbB4).

FAMILY HISTORY OF SEIZURES/EPILEPSY

Family history of seizures or epilepsy is usually not present. A positive family history should trigger a search for a genetic or metabolic etiology.

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