SCN1A and encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy: Both, a zebrafish and a mouse model of Dravet syndrome provided insights into possible disease‐modifying effects of fenfluramine with an impact on dendritic arborization of GABAergic neurons and on cell hyperproliferation in scn1a mutant zebrafish and an impact on myelin damage, microglia activation, and apoptosis in an Scn1a+/− mouse model.133, 134