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@ARTICLE{Sachpekidis:141819,
author = {C. Sachpekidis$^*$ and L. Larribère$^*$ and A.
Kopp-Schneider$^*$ and J. C. Hassel and A.
Dimitrakopoulou-Strauss$^*$},
title = {{C}an benign lymphoid tissue changes in 18{F}-{FDG}
{PET}/{CT} predict response to immunotherapy in metastatic
melanoma?315},
journal = {Cancer immunology immunotherapy},
volume = {68},
number = {2},
issn = {1432-0851},
address = {Heidelberg},
publisher = {Springer},
reportid = {DKFZ-2018-02087},
pages = {297-303},
year = {2019},
abstract = {An association between immune-related adverse events
(irAEs) caused by immunotherapeutic agents and the clinical
benefit of immunotherapy has been suggested. We
retrospectively evaluated by means of 18F-FDG PET/CT
lymphoid tissue changes in the mediastinal/hilar lymph nodes
and the spleen in response to ipilimumab administration in
metastatic melanoma.A total of 41 patients with unresectable
metastatic melanoma underwent 18F-FDG PET/CT before the
start of ipilimumab (baseline PET/CT), after two cycles
(interim PET/CT) and at the end of treatment (late PET/CT).
Data analysis was focused on the mediastinal/hilar lymph
nodes and the spleen. The patients' best clinical response
(BCR) was used as reference.According to the BCR reference,
31 patients showed disease control (DC) and 10 patients
showed progressive disease (PD). Mediastinal/hilar lymph
node evaluation revealed that in total 4 patients in the
interim or late PET/CT $(10\%)$ demonstrated a 'sarcoid-like
lymphadenopathy' as response to treatment (LN-positive). All
LN-positive patients responded to ipilimumab with DC. On the
other hand, no significant differences between the DC and PD
groups regarding both semi-quantitative and quantitative
18F-FDG PET spleen-related parameters at baseline and as
response to treatment were detected.Based on our findings,
$10\%$ patients in the interim or late PET/CT showed
'sarcoid-like lymphadenopathy' as response to treatment. All
these patients showed disease control, implying a relation
between the appearance of sarcoid-like lymphadenopathy and
the clinical benefit of anti-CTLA-4 therapy. On the other
hand, quantitative 18F-FDG PET analysis of the spleen showed
a poor performance in predicting clinical benefit to
ipilimumab.},
cin = {E060 / A370 / C060},
ddc = {610},
cid = {I:(DE-He78)E060-20160331 / I:(DE-He78)A370-20160331 /
I:(DE-He78)C060-20160331},
pnm = {315 - Imaging and radiooncology (POF3-315)},
pid = {G:(DE-HGF)POF3-315},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30478475},
doi = {10.1007/s00262-018-2279-9},
url = {https://inrepo02.dkfz.de/record/141819},
}