Mutations in microtubule-associated protein tau recently have been
identified in familial cases of frontotemporal dementia (FTD). We report
the frequency of tau mutations in a large population-based study of FTD
carried out in the Netherlands from January 1994 to June 1998.
Thirty-seven patients had >/=1 first-degree relative with dementia. A
mutation in the tau gene was found in 17.8% of the group of patie