FGF21 and Dravet syndrome: When comparing between DS patients and normal controls, mean of log10 FGF‐21 level was significantly higher in DS patients (Mean ± SEM: 2.415 ± 0.2043; n = 22) than normal controls (Mean ± SEM: 1.681 ± 0.1309; n = 22) by unpaired t‐test (two‐tailed P value = .0042) (Figure 1).