Glioblastoma multiforme (GBM), the most common malignant primary central nervous system tumour, has significant morbi-mortality. The aim is to determine prognostic factors (PF) of overall survival (OS) and progression-free survival (PFS) in patients treated with Stupp protocol.
Retrospective analysis of GBM patients ≥18 years, diagnosed from March 2004 to December 2014, treated with radiotherapy (RT) plus concomitant and adjuvant temozolomide (aTMZ). OS and PFS were assessed by Kaplan-Meier method and multivariate analysis (MA) was performed using Cox regression.
A total of 213 patients completed concomitant TMZ-RT and were included in final analysis. Majority were males (n = 134), with median age of 61 years old (24-84) and 43.1% ECOG performance status 0. Gross total resection (GTR) was possible in 46.9%, partial resection in 33.3% and stereotactic biopsy (SB) in 19.7%. 197 patients proceeded to aTMZ: 107 suspended
Our results suggest an OS and PFS benefit of extended aTMZ beyond standard 6 cycles, with stronger impact in OS with >12 cycles. The retrospective study design limits conclusions and further validation is necessary in prospective randomized studies.
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All authors have declared no conflicts of interest.