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000862532 1001_ $$0P:(DE-HGF)0$$aKatsigiannis, Sotirios$$b0$$eCorresponding author
000862532 245__ $$aImpact of time to initiation of radiotherapy on survival after resection of newly diagnosed glioblastoma
000862532 260__ $$aLondon$$bBioMed Central$$c2019
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000862532 520__ $$aBackground and purposeTo evaluate the effect of timing of radiotherapy (RT) on survival in patients with newly diagnosed primary glioblastoma (GBM) treated with the same therapeutical protocol.Materials and methodsPatients with newly diagnosed primary GBM treated with the same therapeutical scheme between 2010 and 2015 in our institution were retrospectively reviewed. The population was trichotomized based on the time interval from surgery till initiation of RT (< 28 days, 28–33 days, > 33 days). Kaplan-Meier and Cox regression analyses were used to compare progression free survival (PFS) and overall survival (OS) between the groups. The influence of various extensively studied prognostic factors on survival was assessed by multivariate analysis.ResultsOne-hundred-fifty-one patients met the inclusion criteria. Between the three groups no significant difference in PFS (p = 0.516) or OS (p = 0.902) could be demonstrated. Residual tumor volume (RTV) and midline structures involvement were identified as independent prognostic factors of PFS while age, O-6-Methylguanine Methyltransferase (MGMT) status, Ki67 index, RTV and midline structures involvement represented independent predictors of OS. Patients starting RT after a prolonged delay (> 48 days) exhibited a significantly shorter OS (p = 0.034).
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000862532 7001_ $$0P:(DE-HGF)0$$aKrischek, Boris$$b1
000862532 7001_ $$0P:(DE-HGF)0$$aBarleanu, Stefanie$$b2
000862532 7001_ $$0P:(DE-HGF)0$$aGrau, Stefan$$b3
000862532 7001_ $$0P:(DE-Juel1)143792$$aGalldiks, Norbert$$b4$$ufzj
000862532 7001_ $$0P:(DE-HGF)0$$aTimmer, Marco$$b5
000862532 7001_ $$0P:(DE-HGF)0$$aKabbasch, Christoph$$b6
000862532 7001_ $$0P:(DE-HGF)0$$aGoldbrunner, Roland$$b7
000862532 7001_ $$0P:(DE-HGF)0$$aStavrinou, Pantelis$$b8
000862532 773__ $$0PERI:(DE-600)2224965-5$$a10.1186/s13014-019-1272-6$$gVol. 14, no. 1, p. 73$$n1$$p73$$tRadiation oncology$$v14$$x1748-717X$$y2019
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