semantic dementia https://github.com/monarch-initiative/mondo/issues/4521 https://www.malacards.org/card/frontotemporal_dementia_1 https://www.malacards.org/card/semantic_dementia semantic variant PPA GARD:0010792 DOID:0081391 UMLS:C0338462 Semantic dementia (SD) is a form of frontotemporal dementia (FTD), characterized by the progressive, amodal and profound loss of semantic knowledge (combination of visual associative agnosia, anomia, surface dyslexia or dysgraphia and disrupted comprehension of word meaning) and behavioral abnormalities, attributable to the degeneration of the anterior temporal lobes. dementia, frontotemporal DOID:0051060 FTD semantic primary progressive aphasia MEDGEN:83268 dementia, frontotemporal, with or without parkinsonism frontotemporal dementia Orphanet:100069 MONDO:0010857 NANDO:1200550 OMIM:600274 progressive non-fluent aphasia behavioral variant of frontotemporal dementia