C9orf72 and Tremor: Weakness (18.9%, 0.26 (0.71)) and functional difficulties using hands (16.2%, 0.26 (0.72)) were significantly impaired when CDR® plus NACC FTLD was 0.5 while tremor was the least frequent and severe symptom in C9orf72 mutation carriers (Table 2, Supplementary Table 3).