Moreover, a heterozygous Gabrg2+/Q390X knockin mouse that was generated by Kang24, displayed a variety of phenotypes, such as FS, FS + , GTCSs, GEFS + , Dravet syndrome, or even sudden unexpected death in epilepsy24,37,46. This evidence concerns the gene GABRG2 and encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy.