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@ARTICLE{Bischof:904295,
author = {Bischof, Gerard Nisal and Dodich, Alessandra and Boccardi,
Marina and van Eimeren, Thilo and Festari, Cristina and
Barthel, Henryk and Hansson, Oskar and Nordberg, Agneta and
Ossenkoppele, Rik and Sabri, Osama and Giovanni, B Frisoni G
and Garibotto, Valentina and Drzezga, Alexander},
title = {{C}linical validity of second-generation tau {PET} tracers
as biomarkers for {A}lzheimer’s disease in the context of
a structured 5-phase development framework},
journal = {European journal of nuclear medicine and molecular imaging},
volume = {48},
number = {7},
issn = {0340-6997},
address = {Heidelberg [u.a.]},
publisher = {Springer-Verl.},
reportid = {FZJ-2021-05865},
pages = {2110 - 2120},
year = {2021},
abstract = {AbstractPurpose: In 2017, the Geneva Alzheimer's disease
(AD) strategic biomarker roadmap initiative proposed a
framework of the systematic validation AD biomarkers to
harmonize and accelerate their development and
implementation in clinical practice. Here, we use this
framework to examine the translatability of the
second-generation tau PET tracers into the clinical
context.Methods: All available literature was systematically
searched based on a set of search terms that related
independently to analytic validity (phases 1-2), clinical
validity (phase 3-4), and clinical utility (phase 5). The
progress on each of the phases was determined based on
scientific criteria applied for each phase and coded as
fully, partially, preliminary achieved or not achieved at
all.Results: The validation of the second-generation tau PET
tracers has successfully passed the analytical phase 1 of
the strategic biomarker roadmap. Assay definition studies
showed evidence on the superiority over first-generation tau
PET tracers in terms of off-target binding. Studies have
partially achieved the primary aim of the analytical
validity stage (phase 2), and preliminary evidence has been
provided for the assessment of covariates on PET signal
retention. Studies investigating of the clinical validity in
phases 3, 4, and 5 are still underway.Conclusion: The
current literature provides overall preliminary evidence on
the establishment of the second-generation tau PET tracers
into the clinical context, thereby successfully addressing
some methodological issues from the tau PET tracer of the
first generation. Nevertheless, bigger cohort studies,
longitudinal follow-up, and examination of diverse disease
population are still needed to gauge their clinical
validity.Keywords: Alzheimer’s disease; Biomarker-based
diagnosis; Second-generation tau PET tracers; Strategic
roadmap.},
cin = {INM-2},
ddc = {610},
cid = {I:(DE-Juel1)INM-2-20090406},
pnm = {5253 - Neuroimaging (POF4-525)},
pid = {G:(DE-HGF)POF4-5253},
typ = {PUB:(DE-HGF)16},
pubmed = {33590274},
UT = {WOS:000618156900001},
doi = {10.1007/s00259-020-05156-4},
url = {https://juser.fz-juelich.de/record/904295},
}