Table 4.
Description of cohort phenotypes, number of individuals for each sex and mean age at onset, and last clinic visit for all individuals studied (n=124)
| Phenotype | Total # individuals (M|F) | Mean age at onset (±SD) | Mean age at last clinic visit (±SD) |
|---|---|---|---|
| MCI | 22 (13|9) | 70.0 (±7.7) | 74.0 (±7.0) |
| AD | 58 (20|38) | 65.1 (±8.8) | 69.8 (±10.0) |
| FTD | 27 (15|12) | 56.5 (±11.1) | 56.4 (±15.9) |
| Dementia | 1 (0|1) | NA | 74.0 (±0) |
| Risk of AD | 4 (3|1) | NA | 53.3 (±1.4) |
| Risk of FTD | 10 (3|7) | NA | 47.3 (±17.1) |
| Unaffected | 2 (0|2) | NA | 72.0 (±1.4) |
MCI mild cognitive impairment, AD Alzheimer’s disease, FTD frontotemporal dementia, F female, M male, SD standard deviation, NA not available. This cohort includes 19 individuals analyzed as part of seven families (Fig. 1).