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Table 1 Electroclinical characteristics of GGE patients with presentation of SE

From: Status epilepticus in patients with genetic generalized epilepsy: a case series study

Case

(age, sex)

GGE syndrome

Age of onset in years, type of first seizure

Clinical presentation of SE

EEG characteristics (duration)

Possible cause of SE

ASMs before SE

Treatment at SE

Treatment after SE

Outcome and follow-up time

1(8y, F)

EMA epilepsy

6 years, EM

Eyelid myoclonus, consciousness impairment, occasional limb myoclonus, head jerk

3–5 Hz generalized poly/spike-wave discharges (120 min)

No ASMs

None

MDZ

VPA (0.75 g/day)

Seizure-free (3years)

2(10y, F)

EMA epilepsy

10 years, GTCS

Increased heart rate, occasional eyelid myoclonus

Generalized slow waves admixed with spikes waves (twice, 15 and 19 min, respectively)

Ill-advised ASMs (OXC)

OXC (0.3 g/day)

None

LEV (1 g/day)

Seizure-free (0.25 year)

3(19Y, F)

EMA epilepsy

13 years, GTCS

Eyelid myoclonus, consciousness impairment, secondary GTCS

3–5 Hz generalized poly/spike-wave discharges (46 min)

Ill-advised ASMs (OXC)

OXC (0.6 g/day)

MDZ

VPA (0.5 g/day)

LEV (1.5 g/day)

Seizure-free (2 years)

4(22y, F)

EMA epilepsy

8 years, EMA

Eyelid myoclonus, consciousness impairment, occasional limb myoclonus, head jerk

Paroxysmal 2.5–3 Hz generalized polyspike/spike-wave discharges (60 min)

Insufficient ASMs (LTG)

LTG (0.025 g/day)

MDZ

LEV (1 g/day)

TPM (0.15 g/day)

Infrequent seizures (1 year)

5(24y, F)

EMA epilepsy

15 years, GTCS

Eyelid myoclonus, slight limb myoclonus, consciousness impairment, secondary GTCS

Generalized polyspike/spike-wave discharges (180 min)

Ill-advised ASMs (CBZ)

VPA (1 g/day)

CBZ (0.6 g/day)

None

VPA (1 g/day)

TPM (0.2 g/day)

Seizure-free (2 years)

6(12y, M)

JME

8 years, MJ

Limb myoclonus, consciousness impairment, secondary GTCS

Irregular generalized slow waves admixed with polyspike/spike-wave discharges (35 min)

No ASMs

None

None

VPA (0.5 g/day)

Seizure-free (2 years)

7(18y, F)

JME

15 years, MJ

Limb myoclonus

Paroxysmal 3–4 Hz generalized polyspike/spike-wave discharges (180 min)

Insufficient ASMs (VPA)

VPA (1 g/day)

MDZ

VPA (1.5 g/d)

Seizure-free (6 years)

8(31y, F)

JME

17 years, GTCS

Limb myoclonus, secondary GTCS

Paroxysmal 3–4 Hz generalized polyspike/spike-wave discharges (30 min)

No ASMs

None

None

LTG (0.05 g/d)

Frequent seizures (5 years)

9(7, M)

POMA epilepsy

6 years, PMA

Perioral myoclonus, consciousness impairment

2.5–3 Hz generalized spike-wave discharges (20 s)

No ASMs

None

None

VPA (0.5 g/d)

Seizure free (2 years)

  1. Abbreviations: Female, Male, GGE Genetic generalized epilepsy, SE Status epilepticus, EMA Eyelid myoclonia with absences, JME Juvenile myoclonic epilepsy, POMA Perioral myoclonia with absences, GTCS Generalized tonic-clonic seizure, EM Eyelid myoclonia, MJ Myoclonic jerks, ASMs Antiseizure medications, OXC Oxcarbazepine, LTG Lamotrigine, VPA Valproate, LEV Levetiracetam, TPM Topiramate