SCN1A and encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy: Likewise in a genetic mouse model of Dravet syndrome (Scn1a +/−) hallmarked by severe epilepsy with co-morbid motor deficits and autism, anxiety and depression an extended CBD treatment of 100 mg/kg, twice daily for 27 days enhanced survival, and dyadic social interaction relative to vehicle controls (30).