C9orf72 and behavioral variant of frontotemporal dementia: Table 1 displays the demographic and clinical features of 173 individuals with bvFTD, comprised of 117 individuals with apparently sporadic disease, 32 with C9orf72 repeat expansions (> 30 repeats), 11 with pathogenic variants in GRN, and 13 with pathogenic variants in MAPT (Supplementary Table 2).