The CSF concentrations of NSE in the 1st and 2nd seizure phase groups and prolonged FS group were 12.6 (range, 6.0–61.0), 81.1 (range, 17.1–366.0), and 7.8 (range, 6.3–13.2) ng/mL, respectively. Here, ENO2 is linked to Feingold syndrome.