FUS and amyotrophic lateral sclerosis: Besides cancer, RRM containing proteins are involved in neurodegenerative diseases where the single RRM domain containing FUS and the dual RRM containing Tar DNA‐binding protein 43 (TDP‐43) are both implicated in amyotrophic lateral sclerosis (ALS), while the latter protein is also involved in frontotemporal lobe degeneration (Arai et al. 2006; Kwiatkowski et al. 2009; Neumann et al. 2006; Suk and Rousseaux 2020).