RTOG 0211： a phase 1/2 study of radiation therapy with concurrent gefitinib for newly diagnosed glioblastoma patients.-中国Betway体育网页登陆

摘要 PURPOSE:Todeterminethesafetyandefficacyofgefitinib,anepidermalgrowthfactorreceptor(EGFR)tyrosinekinaseinhibitor,incombinationwithradiationfornewlydiagnosedglioblastoma(GBM)patients.METHODSANDMATERIALS:BetweenMarch21,2002,andMay3,2004,RadiationTherapyOncologyGroup(RTOG)0211enrolled31and147GBMpatientsinthephase1and2arms,respectively.Treatmentconsistedofdailyoralgefinitnibstartedatthetimeofconventionalcranialradiationtherapy(RT)andcontinuedpostRTfor18monthsoruntilprogression.Tissuemicroarraysfrom68caseswereanalyzedforEGFRexpression.RESULTS:Themaximumtolerateddose(MTD)ofgefitinibwasdeterminedtobe500mginpatientsonnon-enzyme-inducinganticonvulsantdrugs(non-EIAEDs).Allpatientsinthephase2componentweretreatedatagefitinibdoseof500mg;patientsreceivingEIADSscouldbeescalatedto750mg.Themostcommonsideeffectsofgefitinibincombinationwithradiationweredermatologicandgastrointestinal.Mediansurvivalwas11.5monthsforpatientstreatedperprotocol.Therewasnooverallsurvivalbenefitforpatientstreatedwithgefitinib+RTwhencomparedwithahistoricalcohortofpatientstreatedwithRTalone,matchedbyRTOGrecursivepartitioninganalysis(RPA)classdistribution.Youngeragewassignificantlyassociatedwithbetteroutcome.Perprotocolstratification,EGFRexpressionwasnotfoundtobeofprognosticvalueforgefitinib+RT-treatedpatients.CONCLUSIONS:TheadditionofgefitinibtoRTiswelltolerated.MediansurvivalofRTOG0211patientstreatedwithRTwithconcurrentandadjuvantgefitinibwassimilartothatinahistoricalcontrolcohorttreatedwithradiationalone.

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RTOG 0211： a phase 1/2 study of radiation therapy with concurrent gefitinib for newly diagnosed glioblastoma patients.

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