ANXA11 and amyotrophic lateral sclerosis: The aim of this study is to characterize ALS patients with ANXA11 variants (ANXA11-ALS) in an Italian population-based cohort, comparing them with ALS patients without pathogenetic variants of known ALS genes (WT-ALS) and those carrying the C9ORF72 hexanucleotide expansion (C9ORF72-ALS).