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Table 1 Epilepsy syndromes in the cohort at recruitment

From: Pathogenic copy number variants and SCN1A mutations in patients with intellectual disability and childhood-onset epilepsy

Syndrome

Number

Epileptic encephalopathy (EE)

 Lennox-Gastaut syndrome

9

 Dravet syndrome

3

 West syndrome

2

 Myoclonic astatic epilepsy

2

 Epilepsy of infancy with migrating focal seizures

2

 Ohtahara syndrome

1

 Epilepsy with continuous spikes and waves during sleep

1

 Unclassified EE with onset in infancy

5

Genetic generalised epilepsy with intellectual disability (GGE-ID)

 Myoclonic epilepsy

3

 Progressive myoclonic epilepsy

1

 Other GGE-IDs

18

Non-lesional focal epilepsies

22

Unclassified epilepsy

2

Unknown

9

Total

80