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@ARTICLE{Attems:154752,
author = {Attems, Johannes and Toledo, Jon B. and Walker, Lauren and
Gelpi, Ellen and Gentleman, Steve and Halliday, Glenda and
Hortobagyi, Tibor and Jellinger, Kurt and Kovacs, Gabor G.
and Lee, Edward B. and Love, Seth and McAleese, Kirsty E.
and Nelson, Peter T. and Neumann, Manuela and Parkkinen,
Laura and Polvikoski, Tuomo and Sikorska, Beata and Smith,
Colin and Grinberg, Lea Tenenholz and Thal, Dietmar R. and
Trojanowski, John Q. and McKeith, Ian G.},
title = {{N}europathological consensus criteria for the evaluation
of {L}ewy pathology in post-mortem brains: a multi-centre
study},
journal = {Acta neuropathologica},
volume = {141},
number = {2},
issn = {1432-0533},
address = {Heidelberg},
publisher = {Springer},
reportid = {DZNE-2021-00342},
pages = {159 - 172},
year = {2021},
abstract = {Currently, the neuropathological diagnosis of Lewy body
disease (LBD) may be stated according to several staging
systems, which include the Braak Lewy body stages (Braak),
the consensus criteria by McKeith and colleagues (McKeith),
the modified McKeith system by Leverenz and colleagues
(Leverenz), and the Unified Staging System by Beach and
colleagues (Beach). All of these systems use
semi-quantitative scoring (4- or 5-tier scales) of Lewy
pathology (LP; i.e., Lewy bodies and Lewy neurites) in
defined cortical and subcortical areas. While these systems
are widely used, some suffer from low inter-rater
reliability and/or an inability to unequivocally classify
all cases with LP. To address these limitations, we devised
a new system, the LP consensus criteria (LPC), which is
based on the McKeith system, but applies a dichotomous
approach for the scoring of LP (i.e., "absent" vs.
"present") and includes amygdala-predominant and
olfactory-only stages. α-Synuclein-stained slides from
brainstem, limbic system, neocortex, and olfactory bulb from
a total of 34 cases with LP provided by the Newcastle Brain
Tissue Resource (NBTR) and the University of Pennsylvania
brain bank (UPBB) were scanned and assessed by 16 raters,
who provided diagnostic categories for each case according
to Braak, McKeith, Leverenz, Beach, and LPC systems. In
addition, using LP scores available from neuropathological
reports of LP cases from UPBB (n = 202) and NBTR (n = 134),
JT (UPBB) and JA (NBTR) assigned categories according to all
staging systems to these cases. McKeith, Leverenz, and LPC
systems reached good (Krippendorff's α ≈ 0.6), while both
Braak and Beach systems had lower (Krippendorff's α ≈
0.4) inter-rater reliability, respectively. Using the LPC
system, all cases could be unequivocally classified by the
majority of raters, which was also seen for $97.1\%$ when
the Beach system was used. However, a considerable
proportion of cases could not be classified when using
Leverenz $(11.8\%),$ McKeith $(26.5\%),$ or Braak $(29.4\%)$
systems. The category of neocortical LP according to the LPC
system was associated with a 5.9 OR (p < 0.0001) of dementia
in the 134 NBTR cases and a 3.14 OR (p = 0.0001) in the 202
UPBB cases. We established that the LPC system has good
reproducibility and allows classification of all cases into
distinct categories. We expect that it will be reliable and
useful in routine diagnostic practice and, therefore,
suggest that it should be the standard future approach for
the basic post-mortem evaluation of LP.},
keywords = {Autopsy / Brain: pathology / Brain Mapping / Consensus /
Humans / Lewy Bodies: pathology / Lewy Body Disease:
classification / Lewy Body Disease: diagnosis / Lewy Body
Disease: pathology / Observer Variation / Reproducibility of
Results},
cin = {AG Neumann},
ddc = {610},
cid = {I:(DE-2719)1210003},
pnm = {352 - Disease Mechanisms (POF4-352)},
pid = {G:(DE-HGF)POF4-352},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33399945},
pubmed = {33399945},
pmc = {pmc:PMC7847437},
doi = {10.1007/s00401-020-02255-2},
url = {https://pub.dzne.de/record/154752},
}