Demographics and clinical data of the amyotrophic lateral sclerosis mimics
| Diagnosis | N (CSF/serum) | m/f | Age | pNfH concentration (pg/mL) | |
| CSF | Serum | ||||
| Radiculopathy, plexopathy | 12 (11/12) | 10/2 | 54 (37–71) | 479 (188–1138) | 37.6 (6.0–375.4) |
| Multifocal motor neuropathy | 5 (4/4) | 4/1 | 49 (28–68) | 385 (36–750) | 29.5 (11.5–81.9) |
| Kennedy disease | 4 (0/4) | 4/0 | 71 (51–80) | – | 37.2 (10.2–95.7) |
| Myasthenia gravis | 2 (2/2) | 1/1 | 73 (72–74) | 630 (546–715) | 19.3 (6.0–32.6) |
| Cervical stenosis | 2 (2/1) | 2/0 | 65 (63–66) | 391 (377–405) | 127.0 |
| Hirayama disease | 1 (1/1) | 1/0 | 23 | 191 | 6.0 |
| Fewdon syndrome | 1 (1/1) | 0/1 | 25 | 402 | 11.0 |
| Functional neurological disorder | 1 (1/0) | 1/0 | 67 | 350 | – |
| Motor neuropathy | 1 (1/1) | 0/1 | 57 | 186 | 6.0 |
| Vascular lesions brainstem | 1 (1/1) | 0/1 | 72 | 422 | 65.3 |
| Primary progressive MS | 1 (1/0) | 0/1 | 64 | 592 | – |
Median and ranges are given.
CSF, cerebrospinal fluid; f, female; m, male; MS, multiple sclerosis; pNfH, phosphorylated neurofilament heavy chain.