SCN1A and encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy: In CBD‐treated Scn1a+/− animals, glycine, methionine, and cysteine remained deregulated compared to untreated animals (Figure 6a), consistent with a role of these elevated amino acid levels providing a trait marker for Dravet syndrome, although methionine levels significantly increased (P < .05) following CBD treatment above that of untreated animals.