Fig. 2.
Median NfL levels of subgroup with an axonal damage pattern and the subgroup with normal NCS findings; OT: ongoing BTZ treatment; PT: BTZ treatment in the past; normal: no pathological finding; axonal: ≥ 2 pathologic nerves (SNAP/CMAP); Normal OT (N = 13; 74.1 pg/ml), Axonal OT (N = 11; 111.0 pg/ml), Normal PT (N = 7; 47.1 pg/ml), Axonal PT (N = 23; 44.3 pg/ml); Mann–Whitney test was used for pairwise comparison; significance levels: **** < 0.0001