MAG and chronic inflammatory demyelinating polyradiculoneuropathy: Major deviations were as follows: compliance not between 80 and 120% (1 patient with anti-MAG); patients without electrophysiological parameters worsening for the past 3 years (7 patients: CIDP, n = 3, anti-MAG, n = 3 and CMT1, n = 1); missing evaluation at W0 or at W48 for motor nerve conduction parameters (1 patient with CIDP); hdPB (investigation medical product) administration duration different from 336 ± 15 days (1 patient with anti-MAG); hdPB administration interruption > 10 consecutive days (1 patient with anti-MAG on his own decision; see supplementary material eTable 1).