biomarker in Guillain-Barré syndrome (GBS). Methods We measured NfL in serum (98
samples) and cerebrospinal fluid (CSF)(24 samples) of patients with GBS prospectively
included in the International GBS Outcome Study (IGOS) in Spain using single-molecule
array (SiMoA) and compared them with 53 healthy controls (HCs). We performed
multivariable regression to analyse the association between sNfL levels and functional …