Phenotypic overlap with frontotemporal dementia (600274) [MISCELLANEOUS] May show good response to levodopa [MISCELLANEOUS] Average age at onset 66 years although earlier onset may occur [MISCELLANEOUS] Caused by mutation in the microtubule-associated protein tau gene (MAPT, 157140.0019) [MOLECULAR BASIS] Median survival 5.7 years [MISCELLANEOUS] Associated with the tau (157140) H1 haplotype [MISCELLANEOUS] Autosomal dominant with incomplete penetrance [MISCELLANEOUS] Genetic heterogeneity (see PSNP2 609454) [MISCELLANEOUS]
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