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- W4383483480 abstract "Glioblastoma (GBM) systematically recurs after a standard 60 Gy radio-chemotherapy regimen. Since Magnetic Resonance Spectroscopic Imaging (MRSI) has been shown to predict the site of relapse, we analyzed the effect of MRSI-guided dose escalation on overall survival (OS) of patients with newly diagnosed GBM.In this multicentric prospective phase III trial, patients who had undergone biopsy or surgery for a GBM were randomly assigned to a standard dose (SD) of 60 Gy or a high dose (HD) of 60 Gy with an additional simultaneous integrated boost totaling 72 Gy to MRSI metabolic abnormalities, the tumor bed and residual contrast enhancements. Temozolomide was administered concomitantly and maintained for 6 months thereafter.One hundred and eighty patients were included in the study between March 2011 and March 2018. After a median follow-up of 43.9 months (95% IC [42.5; 45.5]), median OS was 22.6 months (95% IC [18.9;25.4]) versus 22.2 months (95% IC [18.3;27.8]) for HD, and median progression-free survival was 8.6 (95% IC [6.8;10.8]) versus 7.8 months (95% IC [6.3;8.6]), in SD versus HD, respectively. No increase in toxicity rate was observed in the study arm. The pseudoprogression rate was similar across the SD (14.4%) and HD (16.7%) groups.For O(6)-methylguanine-DNA methyltransferase (MGMT) methylated patients, the median OS was 38 months (95% IC [23.2; NR]) for HD patients versus 28.5 months (95% IC [21.1; 35.7]) for SD patients.The additional MRSI-guided irradiation dose totaling 72 Gy was well-tolerated but did not improve OS in newly diagnosed GBM." @default.
- W4383483480 created "2023-07-08" @default.
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- W4383483480 date "2023-07-07" @default.
- W4383483480 modified "2023-10-17" @default.
- W4383483480 title "Randomized phase III trial of metabolic imaging-guided dose escalation of radio-chemotherapy in patients with newly diagnosed glioblastoma (SPECTRO GLIO trial)" @default.
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- W4383483480 doi "https://doi.org/10.1093/neuonc/noad119" @default.
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