C9ALS/FTD cases are distinguished from other ALS and FTD cases by specific ubiquitin and p62‐positive but TDP‐43‐negative, neuronal cytoplasmic and intranuclear inclusions in the cerebellum and hippocampus (Al‐Sarraj et al, 2011; Cooper‐Knock et al, 2012; Mackenzie et al, 2014). This evidence concerns the gene TARDBP and frontotemporal dementia.