No known mutations were detected in the genes associated with tauopathies and FTD/amyotrophic lateral sclerosis, including MAPT, LRRK2, C9ORF72, ANG, ARGHEF28, CDH13, CHMP2B, FUS, GRN, HNRNPA1, PSEN1, PSEN2, SOD1, SQSTM1, TARDBP, TREM2, UBQLN2, VAPB, and VCP. Here, CHMP2B is linked to frontotemporal dementia.