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@ARTICLE{Berger:280023,
author = {Berger, Moritz and Garcia-Moreno, Hector and Ferreira,
Mónica and Hubener-Schmid, Jeannette and Schaprian, Tamara
and Wegner, Philipp and Elter, Tim-Lukas and Teichmann,
Kennet M and Santana, Magda M and Grobe-Einsler, Marcus and
Oender, Demet and Koyak, Berkan S C and Bernsen, Sarah and
Pereira de Almeida, Luís and Silva, Patrick and Ribeiro,
Joana Afonso and Cunha, Inês and Gonzalez-Robles, Cristina
and Khan, Shamsher and Heslegrave, Amanda and Zetterberg,
Henrik and Lima, Manuela and Raposo, Mafalda and Ferreira,
Ana F and Vasconcelos, João and van de Warrenburg, Bart P
and van Gaalen, Judith and van Prooije, Teije H and de
Vries, Jeroen and Schols, Ludger and Riess, Olaf and
Synofzik, Matthis and Timmann, Dagmar and Thieme, Andreas
and Erdlenbruch, Friedrich and Infante, Jon and
Pelayo-Negro, Ana L and Manrique, Leire and Reetz, Kathrin
and Dogan, Imis and Oz, Gulin and Joers, James M and
Bushara, Khalafalla and Onyike, Chiadikaobi and Povazan,
Michal and Jacobi, Heike and Schmahmann, Jeremy D and Ratai,
Eva-Maria and Schmid, Matthias and Giunti, Paola and
Klockgether, Thomas and Faber, Jennifer},
title = {{P}rogression of biological markers in spinocerebellar
ataxia type 3: longitudinal analysis of prospective data
from the {ESMI} cohort.},
journal = {The lancet / Regional health. Europe},
volume = {55},
issn = {2666-7762},
address = {[Amsterdam]},
publisher = {Elsevier},
reportid = {DZNE-2025-00867},
pages = {101339},
year = {2025},
abstract = {Spinocerebellar ataxia type 3 (SCA3) is an autosomal
dominantly inherited adult-onset disease. We aimed to
describe longitudinal changes in clinical and biological
findings and to identify predictors for clinical
progression.We used data from participants enrolled in the
ESMI cohort collected between Nov 09, 2016 and July 18,
2023. The data freeze included data from 14 sites in five
European countries and the United States. We assessed ataxia
with the Scale for the Assessment and Rating of Ataxia
(SARA). We measured disease-specific mutant ataxin-3 protein
(ATXN3) and neurofilament light chain (NfL) in plasma and
performed MRIs. Data were analysed by regression modelling
on a timescale defined by onset. The onset of abnormality of
a marker was defined as the time at which its value, as
determined by modelling, exceeded the mean ± 2 SD of
healthy controls. To study responsiveness of markers, we
determined the sensitivity to change ratios (SCSs).Data from
291 SCA3 mutation carriers before and after clinical onset
and 121 healthy controls were included. NfL levels became
abnormal in SCA3 mutation carriers more than 20 years (-21.5
years $[95\%$ CI n.d.-9.5]) before onset. The earliest MRI
abnormality was volume loss of medulla oblongata (-4.7 years
$[95\%$ CI n.d.-3.3]). The responsiveness of markers
depended on the disease stage. Across all stages, pons
volume had the highest responsiveness with an SCS of 1.35
$[95\%$ CI 1.11-1.78] exceeding that of SARA (0.99 $[95\%$
CI 0.88-1.11]). In SCA3, lower age (p = 0.0459 $[95\%$ CI of
slope change -0.0018 to 0.0000]) and lower medulla oblongata
volume (p < 0.0001 $[95\%$ CI of slope change -0.0298 to
-0.0115]) were predictors of SARA progression.Our study
provides quantitative information on the progression of
biological markers in SCA3 mutation carriers before and
after onset of ataxia, and allowed the identification of
predictors for clinical progression. Our data could prove
useful for the design of future clinical trials.HEU Joint
Programme - Neurodegenerative Disease Research (JPND)
(Federal Ministry of Education and Research, Germany; The
Netherlands Organisation for Health Research and
Development; Foundation for Science and Technology,
Portugal; Medical Research Council, Regional Fund for
Science and Technology, Azores), and Servier. At the US
sites this work was in part supported by the National Ataxia
Foundation and the National Institute of Neurological
Disorders and Stroke (NINDS) grant R01NS080816.},
keywords = {ATXN3 (Other) / Biomarker (Other) / Disease modelling
(Other) / MRI (Other) / NfL (Other) / Spinocerebellar ataxia
(Other) / Staging model (Other)},
cin = {Clinical Research (Bonn) / AG Spottke / Clinical Research
Platform (CRP) / AG Schöls / AG Gasser / AG Radbruch / AG
Schmid Bonn / Patient Studies (Bonn)},
ddc = {610},
cid = {I:(DE-2719)1011001 / I:(DE-2719)1011103 /
I:(DE-2719)1011401 / I:(DE-2719)5000005 / I:(DE-2719)1210000
/ I:(DE-2719)5000075 / I:(DE-2719)1013028 /
I:(DE-2719)1011101},
pnm = {353 - Clinical and Health Care Research (POF4-353)},
pid = {G:(DE-HGF)POF4-353},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:40678042},
pmc = {pmc:PMC12270660},
doi = {10.1016/j.lanepe.2025.101339},
url = {https://pub.dzne.de/record/280023},
}