Table 1. Clinical characteristics of the study population.

Study samples Patients (N = 135)	FTD (N = 82)	EOAD (N = 32)	Other diagnosis* (N = 21)
Gender (female/male)	48/34	18/14	9/12
Age at onset	56.7±7.3	54 ±11.1	55.8±17.8
Dominant cases (%)	10 (12.2%)	12 (37.5%)	7 (33.3%)
Familial cases (%)	33 (40.2%)	9 (28.1%)	6 (28.6%)
Sporadic cases (%)	30 (36.6%)	7 (21.9%)	5 (23.8%)
Unknown cases (%)	9 (11.1%)	4 (12.5%)	3 (14.3%)

FTD–frontotemporal dementia (FTD group includes all subtypes of FTD); EOAD–early-onset Alzheimer’s disease.

^*the ‘other diagnosis’ group includes 16 other familial/early-onset neurodegenerative/dementia disorders and 5 autosomal dominant late onset-Alzheimer’s disease (LOAD) cases.