Initial FDG-PET/CT predicts survival in adults Ewing sarcoma family of tumors

Abstract : Copyright: Jamet et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License 3.0 (CC BY 3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. ABSTRACT Purpose: The aim of this retrospective study was to determine, at baseline, the prognostic value of different FDG-PET/CT quantitative parameters in a homogenous Ewing Sarcoma Family of Tumors (ESFT) adult population, compared with clinically relevant prognostic factors. Methods: Adult patients from 3 oncological centers, all with proved ESFT, were retrospectively included. Quantitative FDG-PET/CT parameters (SUV (maximum, peak and mean), metabolic tumor volume (MTV) and total lesion glycolysis (TLG) of the primary lesion of each patient were recorded before treatment, as well as usual clinical prognostic factors (stage of disease, location, tumor size, gender and age). Then, their relation with progression free survival (PFS) and overall survival (OS) was evaluated. Results: 32 patients were included. Median age was 21 years (range, 15 to 61). Nineteen patients (59%) were initially metastatic. On multivariate analysis, high SUV max remained independent predictor of worst OS (p=0.02) and PFS (p=0.019), metastatic disease of worst PFS (p=0.01) and high SUVpeak of worst OS (p=0.01). Optimal prognostic cutoff of SUV peak was found at 12.5 in multivariate analyses for PFS and OS (p=0.0001). Conclusions: FDG-PET/CT, recommended at ESFT diagnosis for initial staging, can be a useful tool for predicting long-term adult patients outcome through semi-quantitative parameters.
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Oncotarget, Impact journals, 2017, 8 (44), pp.77050-77060
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Bastien Jamet, Thomas Carlier, Loïc Campion, Emmanuelle Bompas, Sylvie Girault, et al.. Initial FDG-PET/CT predicts survival in adults Ewing sarcoma family of tumors. Oncotarget, Impact journals, 2017, 8 (44), pp.77050-77060. 〈inserm-01636020〉

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