ALS‐causing FUS and TDP‐43 mutations cause excessive cytoplasmic localization and misfolding (Bosco et al., 2010; Liu‐Yesucevitz et al., 2010; Vance et al., 2009), which might trigger dysregulated assembly of inappropriate fibrillar aggregates that are toxic (Johnson et al., 2009; Sun et al., 2011). Here, FUS is linked to amyotrophic lateral sclerosis.