%0 Journal Article
%A Friedrich, Michel
%A Werner, Jan-Michael
%A Steinbach, Joachim P
%A Sabel, Michael
%A Herrlinger, Ulrich
%A Piroth, Marc
%A Stoffels, Gabriele
%A Filss, Christian P
%A Lohmann, Philipp
%A Shah, Nadim J
%A Ruge, Maximilian I
%A Mottaghy, Felix M
%A Goldbrunner, Roland
%A Langen, Karl-Josef
%A Fink, Gereon R
%A Kocher, Martin
%A Galldiks, Norbert
%T Functional connectivity between tumor region and resting-state networks as imaging biomarker for overall survival in recurrent gliomas diagnosed by O -(2-[18F]fluoroethyl)- l -tyrosine PET
%J Neuro-oncology advances
%V 7
%N 1
%@ 2632-2498
%C Oxford
%I Oxford University Press
%M FZJ-2025-02236
%P vdaf023
%D 2025
%Z This open-access publication is funded by the DeutscheForschungsgemeinschaft (DFG, German Research Foundation,contract number 491111487).
%X BackgroundAmino acid PET using the tracer O-(2-[18F]fluoroethyl)-l-tyrosine (FET) is one of the most reliable imaging methods for detecting glioma recurrence. Here, we hypothesized that functional MR connectivity between the metabolic active recurrent tumor region and resting-state networks of the brain could serve as a prognostic imaging biomarker for overall survival (OS).MethodsThe study included 82 patients (26–81 years; median Eastern Cooperative Oncology Group performance score, 0) with recurrent gliomas following therapy (WHO-CNS 2021 grade 4 glioblastoma, n = 57; grade 3 or 4 astrocytoma, n = 12; grade 2 or 3 oligodendroglioma, n = 13) diagnosed by FET PET simultaneously acquired with functional resting-state MR. Functional connectivity (FC) was assessed between tumor regions and 7 canonical resting-state networks.ResultsWHO tumor grade and IDH mutation status were strong predictors of OS after recurrence (P < .001). Overall FC between tumor regions and networks was highest in oligodendrogliomas and was inversely related to tumor grade (P = .031). FC between the tumor region and the dorsal attention network was associated with longer OS (HR, 0.88; 95%CI, 0.80–0.97; P = .007), and showed an independent association with OS (HR, 0.90; 95%CI, 0.81–0.99; P = .033) in a model including clinical factors, tumor volume and MGMT. In the glioblastoma subgroup, tumor volume and FC between the tumor and the visual network (HR, 0.90; 95%CI, 0.82–0.99, P = .031) were independent predictors of survival.ConclusionsRecurrent gliomas exhibit significant FC to resting-state networks of the brain. Besides tumor type and grade, high FC between the tumor and distinct networks could serve as independent prognostic factors for improved OS in these patients.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 40084168
%U <Go to ISI:>//WOS:001443909500001
%R 10.1093/noajnl/vdaf023
%U https://juser.fz-juelich.de/record/1041408