In total, 15 children (1.2% of the total cohort (n = 1269), 95%-confidence interval (CI):0.6 to1.8%) were diagnosed with SCN1A-related Dravet syndrome (Table 1, Figure 1). The gene discussed is SCN1A; the disease is encephalopathy, progressive, early-onset, with brain edema and/or leukoencephalopathy.