CST3 and Dravet syndrome: Compared with the survival group, the early death group had more men, a lower incidence of DS, a higher proportion of severe DS, a higher proportion of HGB < 65 g/L at diagnosis, a higher proportion of GFR < 60 ml/min, higher cystatin C levels and higher CRP levels, and the above differences were statistically significant (all P < 0.05).