The baseline serum NfL levels and z-scores were not significantly different between the groups of patients with the demyelinating, axonal, equivocal, inexcitable, and normal electrophysiological subtypes (p = 0.28 and p = 0.32, Kruskal–Wallis test; Supplementary Fig. S5) or the groups of patients with different GBS-DS at entry (p = 0.39 and p = 0.44, Kruskal–Wallis test; Supplementary Fig. S6a and b). The gene discussed is NEFL; the disease is Guillain-Barre syndrome.