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- W2788464078 abstract "Background:Mutations in the leucine rich repeat kinase 2 (LRRK2) gene are among the most common genetic causes of Lewy body Parkinson’s disease (PD). However, LRRK2 mutations can also lead to a variety of pathological phenotypes other than typical PD, including relatively pure nigrostriatal cell lo ss without alpha-synuclein-positive Lewy bodies or Lewy neurites, progressive supranuclear palsy (PSP), and multiple system atrophy (MSA). The mechanisms behind this remarkable pleomorphic pathology are currently unclear. Objective:To genetically and pathologically characterize a case with a LRRK2, p.Ile1371Val rare variant and pathologically proven MSA. Methods:From the brain donation program at the Parkinson’s Institute and Clinical Center, we selected 26 brains with family history and a with clinicopathological diagnosis of PD (n = 20), MSA (n = 4), or PSP (n = 2). We performed neuropathological evaluation, including alpha-synuclein and tau immunohistochemistry and sequenced 188 genes that have been reported as causative for or associated with neurodegenerative diseases. Results:We identified a known LRRK2, p.Ile1371Val genetic variant in a case with clinically diagnosed and pathologically proven MSA. Neuropathology revealed that the olivopontocerebellar system was more affected than the striatonigral system. Conclusions:Our data suggest that genetic variants in the LRRK2 gene can present clinically and neuropathologically as MSA. One other LRRK2 genetic variant (LRRK2, p.Ile2020Thr) has been reported with a neuropathological diagnosis of MSA. Interestingly, the LRRK2 variant (LRRK2, p.Ile1371Val) identified here has been reported previously in a postmortem case with Lewy body PD.Future studies are critical to discover the mechanisms leading to different neurodegenerative trajectories both in neuronal and glial cell populations." @default.
- W2788464078 created "2018-03-06" @default.
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- W2788464078 date "2018-02-17" @default.
- W2788464078 modified "2023-10-16" @default.
- W2788464078 title "LRRK2 p.Ile1371Val Mutation in a Case with Neuropathologically Confirmed Multi-System Atrophy" @default.
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- W2788464078 doi "https://doi.org/10.3233/jpd-171237" @default.
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