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Purpose: Aim of this single center study was to determine whether elderly patients benefit from individualized treatment not excluding full standard therapy. Additionally predictive and prognostic factors influencing outcome in this patient’s population were evaluated. Material and Methods: Between 1997 and 2010, 119 patients equal or older than 60 years were enrolled in this retrospective review. All patients had neuropathology confirmed diagnosis of glioblastoma. Treatment outcome concerning progression free survival was measured by MRI. For evaluation of O6-Methylguanin-DNA-methyltransferase (MGMT) Methylation-specific PCR was used. The log rank test and the Cox proportional hazards model were used to analyze the data. Factors considered in univariate and multivariate analyses included age, gender, Karnofsky performance scale (KPS), extent of resection, treatment with radioand chemotherapy and MGMT status. Survival probabilities were estimated by means of the Kaplan Meier method. Results: Multivariate analysis demonstrated age, KPS and treatment more than surgery as prognostic factors for survival and sex, KPS, type of surgery and standard treatment as independent factors for PFS. MGMT status revealed no difference in survival between the methylated and unmethylated tumours in the whole study population (12.7 and 12.0, respectively). Surgery had an impact on survival with a significant advantage for complete resection. Conclusion: Extent of resection is essential even in elderly patients. Full standard treatment should be offered to elderly GBM patients with good clinical performance, there is no reason to withhold radioor chemotherapy from these patients. MGMT promotor methylation of the tumour is not relevant for treatment decision. </p

Treatment in Elderly Glioblastoma Patients: General Reduction of Standard Therapy Should Be Avoided. Prognostic Value of MGMT Is Questionable