|
|||||
|
|
A novel SNCA E83Q mutation in a case of dementia with Lewy bodies and atypical frontotemporal lobar degeneration |
|
| Authors: | Alifiya Kapasi Jared R. Brosch Kelly N. Nudelman Sonal Agrawal Tatiana M. Foroud Julie A. Schneider |
| Affiliation: | 1. Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, Illinois, USA;2. Department of Neurology, Indianapolis, Indiana University School of Medicine, Indianapolis, Indiana, USA;3. Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, Indiana, USA Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, Indiana, USA National Centralized Repository for Alzheimer's Disease and Related Dementias (NCRAD), Indiana University School of Medicine, Indianapolis, Indiana, USA;4. Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, Illinois, USA Department of Pathology, Rush University Medical Center, Chicago, Illinois, USA Department of Neurological Sciences, Rush University Medical Center, Chicago, Illinois, USA |
| 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. |
| Keywords: | case report dementia frontotemporal lobar degeneration Lewy bodies parkinsonism |