SCN1A and encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy: An initial series of 41 probands (18 females and 23 males), referred for genetic analysis of Dravet syndrome but negative for point mutation and intragenic rearrangement of SCN1A[15], was screened for genomic rearrangement using Illumina 370CNV microarrays.