We suspected frontotemporal dementia in 4 cases (cases 30, 33,34 and 37) and hereditary ataxia in 2 patient (case 32 and 36) although the findings of genetic analyses were negative for hexanucleotide expansion (C9ORF72), progranulin mutation and/or common dominant hereditary/recessive ataxias (SCA 1,2-3-6,7,8, 17,36, DRPLA and Friedreich). Here, GRN is linked to frontotemporal dementia.