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, TREM2 is linked to amyotrophic lateral sclerosis.