Pure versus complex phenotype of the 67 SPAST patients based on clinical and/or imaging features
| No (%) of patients n=67 | |
| Pure | 52 (77.6) |
| Complicated | 15 (22.4) |
| Tremor | 7 (10.4) |
| Optic atrophy | 2 (3.0) |
| Polyneuropathy | 2 (3.0) |
| Thin corpus callosum | 2 (3.0) |
| Mental retardation | 1 (1.5) |
| Dementia | 1 (1.5) |
| Epilepsy | 1 (1.5) |
| Cerebellar atrophy | 1 (1.5) |