A novel SNCA E83Q mutation in a case of dementia with Lewy bodies and atypical frontotemporal lobar degeneration

Alifiya Kapasi, Jared R. Brosch, Kelly N. Nudelman, Sonal Agrawal, Tatiana M. Foroud, Julie A. Schneider

Research output: Contribution to journalArticle

Abstract

In this case report, we discuss a patient presenting with parkinsonism followed by a non-amnestic dementia with aphasic clinical features, as well as frontal dysexecutive syndrome. There was a family history of dementia with an autopsy diagnosis of “Pick's disease” in the proband's father. Neuroimaging of the patient revealed focal and severe temporal lobe and lesser frontoparietal lobe atrophy. At autopsy, there was severe frontotemporal lobar degeneration. Histologic evaluation revealed an absence of tau or transactivation response DNA-binding protein of 43 kDa (TDP) pathology but rather severe Lewy body deposition in the affected cortices. Genetic phenotyping revealed a novel missense mutation (p.E83Q) in exon 4 of the gene encoding α-synuclein (SNCA). This case study presents a patient with a novel SNCA E83Q mutation associated with widespread Lewy body pathology with prominent severe atrophy of the frontotemporal lobes and corresponding cognitive impairment.

Original languageEnglish (US)
JournalNeuropathology
DOIs
StateAccepted/In press - 2020

Keywords

  • case report
  • dementia
  • frontotemporal lobar degeneration
  • Lewy bodies
  • parkinsonism

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Clinical Neurology

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