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Flowchart of patient distribution within clusters, taking into account predominant clinical variants according to consensus classification and second clinical syndromes. Non-fluent PPA is shown in blue, semantic PPA in green, logopenic PPA in yellow, and healthy controls in orange. ALS, amyotrophic lateral sclerosis; bvFTD, behavioral variant frontotemporal dementia; CBS, corticobasal syndrome; PPA, primary progressive aphasia; PSP, progressive supranuclear palsy.
