Table 2.
Main clinical characteristics of patients with different mutations and without known mutations
Abbreviations: fALS = familial amyotrophic lateral sclerosis; FTD = frontotemporal dementia; IQR = interquartile range; NS = not significant; sALS = sporadic amyotrophic lateral sclerosis.
Calculated on 475 cases.
The 2 cases with FUS and OPTN missense mutations are not indicated in the table; both patients had a spinal phenotype and were cognitively normal.