EWSR1 and amyotrophic lateral sclerosis: Given the recent report that FTLD-FUS is distinguished from ALS-FUS by the presence of Ewing’s Sarcoma protein (EWS) and TATA-binding protein-associated factor 15 (TAF15) colocalising with FUS pathology [41], we also looked for the presence of these proteins in our mice, but found no evidence of pathology or colocalisation of FUS with either protein (Online resource Fig S2).