The specific role of the cerebellum in this disorder may be related to the cerebellum-specific repeat expansion of several genes that determine ALS pathology, including the NIPA magnesium transporter 1 (NIPA1), chromosome 9 open reading frame 72 (C9ORF72), and ataxin-1 (ATXN1) genes [130]. The gene discussed is ATXN1; the disease is amyotrophic lateral sclerosis.