TARDBP and amyotrophic lateral sclerosis: Since we have described TDP-43 pathology in MMC children and young adults (Calderón-Garcidueñas et al., 2022a; Calderón-Garcidueñas et al., 2024a; Calderón-Garcidueñas et al., 2024b; Calderón-Garcidueñas et al., 2020; Calderón-Garcidueñas et al., 2022d) in motor and non-motor areas, we compared magnetic results in MMC motor areas versus ALS cases and found a significant difference in ARM50, SIRM, and IRM300.