Similarly, in C9orf72 ALS/FTD, polyGR and polyPR form droplet‐like nuclear structures that colocalize with nucleolar markers while polyGA, polyGP, and polyPA show diffuse nuclear and cytoplasmic localization (Wen et al, 2014; Tao et al, 2015). Here, C9orf72 is linked to frontotemporal dementia.