| Phenotype details |
severe intellectual disability; 6m-onset LGS with atypical absences, myoclonic and focal seizures and GTCS; at time referral daily seizures despite treatment with VPA, LTG, CLZ, phenobarbital (PB) and ethosuximide (ETX); following genetic diagnosis tapered off LTG (10y-duration treatment) went from daily generalized seizures, with a duration up to 20-60 minutes to 5-10 seizures per month, none of them more than a couple of minutes in duration, many focal instead of generalized, increased activity level, attention span and initiative, currently treated with ETX, PB, VPA and CLZ |