Clinical Parkinsonism & Related Disorders (Jan 2023)

A case of familial frontotemporal dementia caused by a progranulin gene mutation

  • Lauryn Currens,
  • Nigel Harrison,
  • Maria Schmidt,
  • Halima Amjad,
  • Weiyi Mu,
  • Sonja W. Scholz,
  • Jee Bang,
  • Alexander Pantelyat

Journal volume & issue
Vol. 9
p. 100213

Abstract

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After Alzheimer’s disease, Frontotemporal dementia (FTD) is the most common cause of early-onset dementia. Several genetic mutations have been identified in familial FTD, with mutations in progranulin (GRN) accounting for approximately 20–25% of familial FTD cases and about 10% of total FTD cases. We report the case of a familial FTD patient with atypical parkinsonism who was found to have GRN frontotemporal dementia (GRN-FTD) with a pathogenic splice site mutation (c.709-2A > G) and notable phenotypic heterogeneity among family members.

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