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@ARTICLE{Bruer:284335,
author = {Bräuer, Stefan and Sondermann, Verena and Schniewind,
Inaki and Hähnel, Tom and Dinter, Elisabeth and Kleineidam,
Luca and Stark, Melina and Schmid, Matthias and Sodenkamp,
Sebastian and Laske, Christoph and Spruth, Eike and Priller,
Josef and Janowitz, Daniel and Bürger, Katharina and
Kilimann, Ingo and Teipel, Stefan and Storch, Alexander and
Hansen, Niels and Wiltfang, Jens and Glanz, Wenzel and
Düzel, Emrah and Preis, Lukas and Peters, Oliver and
Hellmann-Regen, Julian and Wagner, Michael and Bernhardt,
Alexander Maximilian and Levin, Johannes and Petzold, Gabor
and Kronmüller, Marie and Gamez, Anna and Spottke, Annika
and Brosseron, Frederic and Rostamzadeh, Ayda and Jessen,
Frank and Hermann, Andreas and Fliessbach, Klaus and
Schneider, Anja and Falkenburger, Björn H},
title = {{A}lpha-synuclein quantitative seed amplification assay
predicts conversion to dementia.},
journal = {Alzheimer's and dementia},
volume = {22},
number = {1},
issn = {1552-5260},
address = {Hoboken, NJ},
publisher = {Wiley},
reportid = {DZNE-2026-00110},
pages = {e71167},
year = {2026},
abstract = {The alpha-synuclein seed amplification assay (SAA) has
shown excellent performance in the detection of Lewy body
pathology in cerebrospinal fluid (CSF). Lewy body pathology
is prognostically relevant in patients at risk for dementia.
Current assays only provide binary results, so there is a
need to quantify the extent of pathology in living
patients.In addition to the 'standard' SAA, we developed a
quantitative SAA (qnSAA) and measured 432 CSF samples (216
baseline-follow-up pairs).qnSAA results correlated with
cognitive performance. Seventy-five percent of participants
with fast qnSAA kinetics converted to dementia in the
observed interval. Overall, participants with fast qnSAA
kinetics accounted for $27.3\%$ of dementia converters in
the entire cohort.Findings demonstrate promising properties
of qnSAA measurements in a cohort of patients at risk for
dementia. qnSAA results showed improved prognostic relevance
and have potential to measure target engagement of therapies
against Lewy body pathology.},
keywords = {Humans / alpha-Synuclein: cerebrospinal fluid / Male /
Female / Dementia: cerebrospinal fluid / Dementia: diagnosis
/ Aged / Disease Progression / Biomarkers: cerebrospinal
fluid / Aged, 80 and over / Lewy Body Disease: cerebrospinal
fluid / Prognosis / Cohort Studies / Alzheimer´s disease
(Other) / Lewy body (Other) / alpha‐synuclein (Other) /
dementia (Other) / real‐time quaking‐induced conversion
(Other) / seed amplification assay (Other) / alpha-Synuclein
(NLM Chemicals) / Biomarkers (NLM Chemicals)},
cin = {AG Falkenburger / AG Wagner / AG Schmid Bonn / ICRU / AG
Gasser / AG Priller / Clinical Research (Munich) / AG Teipel
/ AG Storch / AG Wiltfang / AG Düzel / AG Peters / AG
Endres / AG Levin / AG Petzold / AG Spottke / AG Heneka / AG
Jessen / AG Hermann / Patient Studies (Bonn) / AG Schneider},
ddc = {610},
cid = {I:(DE-2719)1710012 / I:(DE-2719)1011201 /
I:(DE-2719)1013028 / I:(DE-2719)1240005 / I:(DE-2719)1210000
/ I:(DE-2719)5000007 / I:(DE-2719)1111015 /
I:(DE-2719)1510100 / I:(DE-2719)5000014 / I:(DE-2719)1410006
/ I:(DE-2719)5000006 / I:(DE-2719)5000000 /
I:(DE-2719)1811005 / I:(DE-2719)1111016 / I:(DE-2719)1013020
/ I:(DE-2719)1011103 / I:(DE-2719)1011303 /
I:(DE-2719)1011102 / I:(DE-2719)1511100 / I:(DE-2719)1011101
/ I:(DE-2719)1011305},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:41572624},
pmc = {pmc:PMC12828062},
doi = {10.1002/alz.71167},
url = {https://pub.dzne.de/record/284335},
}