18 F-Flortaucipir in TDP-43 associated frontotemporal dementia

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Bibtex

@article{855a6f2dc625422b8c3d7141ef1ed91e,
title = "18 F-Flortaucipir in TDP-43 associated frontotemporal dementia",
abstract = "Retention of 18 F-Flortaucipir is reportedly increased in the semantic variant of primary progressive aphasia (svPPA), which is dominated by TDP-43 pathology. However, it is unclear if 18 F-Flortaucipir is also increased in other TDP-43 diseases, such as bvFTD caused by a C9orf72 gene mutation. We therefore recruited six C9orf72 expansion carriers, six svPPA patients, and 54 healthy controls. All underwent 18 F-Flortaucipir PET and MRI scanning. Data from 39 Alzheimer’s Disease patients were used for comparison. PET tracer retention was assessed both at the region-of-interest (ROI) and at the voxel-level. Further, autoradiography using 3 H-Flortaucipir was performed. SvPPA patients exhibited higher 18 F-Flortaucipir retention in the lateral temporal cortex bilaterally according to ROI- and voxel-based analyses. In C9orf72 patients, 18 F-Flortaucipir binding was slightly increased in the inferior frontal lobes in the ROI based analysis, but these results were not replicated in the voxel-based analysis. Autoradiography did not show specific binding in svPPA cases or in C9orf72-mutation carriers. In conclusion, temporal lobe 18 F-Flortaucipir retention was observed in some cases of svPPA, but the uptake was of a lower magnitude compared to AD dementia. C9orf72-mutation carriers exhibited none or limited 18 F-Flortaucipir retention, indicating that 18 F-Flortaucipir binding in TDP-43 proteinopathies is not a general TDP-43 related phenomenon.",
author = "R. Smith and Santillo, {A. F.} and Wald{\"o}, {M. Landqvist} and O. Strandberg and D. Berron and S. Vestberg and {van Westen}, D. and {van Swieten}, J. and M. Honer and O. Hansson",
year = "2019",
month = "4",
day = "15",
doi = "10.1038/s41598-019-42625-9",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
publisher = "Nature Publishing Group",
number = "1",

}