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• W3022348530 abstract "Abstract We aimed to identify an Alzheimer’s disease (AD) subtype with right predominant focal atrophy. We recruited 17 amyloid PET positive logopenic variant primary progressive aphasia (lvPPA) and 226 amyloid PET positive AD patients. To identify AD with right focal atrophy (Rt-AD), we selected cortical areas that showed more atrophy in lvPPA than in AD and calculated an asymmetry index (AI) for this area in each individual. Using a receiver operating characteristic curve, we found that the optimal AI cut-off to discriminate lvPPA from AD was −3.1 (mean AI – 1.00 standard deviation) (sensitivity 88.2, specificity 89.8). We identified 32 Rt-AD patients whose AI was above mean AI + 1.00 standard deviation, 38 Lt-AD patients whose AI was lower than mean AI − 1.00 standard deviation, and 173 Symmetric-AD patients whose AI was within mean AI ± 1.00 standard deviation. We characterized clinical and cognitive profiles of Rt-AD patients by comparing with those of Lt-AD and Symmetric-AD patients. Compared to Symmetric-AD patients, Rt-AD patients had asymmetric focal atrophy in the right temporoparietal area and showed poor performance on visuospatial function testing ( p = 0.009). Our findings suggested that there is an AD variant characterized by right focal atrophy and visuospatial dysfunction." @default.
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• W3022348530 date "2020-04-29" @default.
• W3022348530 modified "2023-10-18" @default.
• W3022348530 title "Identifying a subtype of Alzheimer’s disease characterised by predominant right focal cortical atrophy" @default.
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• W3022348530 doi "https://doi.org/10.1038/s41598-020-64180-4" @default.
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