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@ARTICLE{Liew:274491,
author = {H. Liew$^*$ and S. Mein$^*$ and T. Tessonnier and A.
Abdollahi$^*$ and J. Debus$^*$ and I. Dokic$^*$ and A.
Mairani},
title = {{D}o {W}e {P}reserve {T}umor {C}ontrol {P}robability
({TCP}) in {FLASH} {R}adiotherapy? {A} {M}odel-{B}ased
{A}nalysis.},
journal = {International journal of molecular sciences},
volume = {24},
number = {6},
issn = {1422-0067},
address = {Basel},
publisher = {Molecular Diversity Preservation International},
reportid = {DKFZ-2023-00634},
pages = {5118},
year = {2023},
note = {#EA:E210#},
abstract = {Reports of concurrent sparing of normal tissue and
iso-effective treatment of tumors at ultra-high dose-rates
(uHDR) have fueled the growing field of FLASH radiotherapy.
However, iso-effectiveness in tumors is often deduced from
the absence of a significant difference in their growth
kinetics. In a model-based analysis, we investigate the
meaningfulness of these indications for the clinical
treatment outcome. The predictions of a previously
benchmarked model of uHDR sparing in the 'UNIfied and
VERSatile bio response Engine' (UNIVERSE) are combined with
existing models of tumor volume kinetics as well as tumor
control probability (TCP) and compared to experimental data.
The potential TCP of FLASH radiotherapy is investigated by
varying the assumed dose-rate, fractionation schemes and
oxygen concentration in the target. The developed framework
describes the reported tumor growth kinetics appropriately,
indicating that sparing effects could be present in the
tumor but might be too small to be detected with the number
of animals used. The TCP predictions show the possibility of
substantial loss of treatment efficacy for FLASH
radiotherapy depending on several variables, including the
fractionation scheme, oxygen level, and DNA repair kinetics.
The possible loss of TCP should be seriously considered when
assessing the clinical viability of FLASH treatments.},
keywords = {DNA repair (Other) / FLASH (Other) / TCP (Other) / UNIVERSE
(Other) / dose-rate (Other) / ionizing radiation (Other) /
modeling (Other) / tumor volume (Other)},
cin = {E210 / HD01 / E050},
ddc = {540},
cid = {I:(DE-He78)E210-20160331 / I:(DE-He78)HD01-20160331 /
I:(DE-He78)E050-20160331},
pnm = {315 - Bildgebung und Radioonkologie (POF4-315)},
pid = {G:(DE-HGF)POF4-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:36982185},
doi = {10.3390/ijms24065118},
url = {https://inrepo02.dkfz.de/record/274491},
}