Fig. 2

a When comparing patients with a C9orf72 repeat expansion to those without this expansion (C9Plus vs. C9Minus), a heat map is displayed. b A heat map is shown when comparing expansion carriers to control subjects (C9Plus vs. Control). In these heat maps, high expression levels are shown in red and low levels in blue. Both heat maps indicate that most expansion carriers cluster together (purple). Of note, for visualization purposes, only the top differentially expressed genes are displayed (false discovery rate [FDR] < 0.001)