<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><bold>Background.</bold> The aim of the retrospective study was to evaluate the outcome and prognostic factors of newly diagnosed glioblastoma patients who received 3-D conformal radiotherapy (RT) combined with concomitant and/or adjuvant temozalamide (TMZ) postoperatively.<bold>Patients and methods.</bold> Fifty patients with glioblastoma multiforme were treated with 3-D conformal RT combined with concomitant and/or adjuvant TMZ postoperatively. Median age was 57 years (range, 12-79) and median Karnofsky performance status (KPS) was 70 (range, 40-100). A multivariate Cox regression model was used to test the effect of age, sex, KPS, extent of surgery, tumour dimension (&lt;5cm vs. ≥5cm), full dose RT (≥60 Gy vs. &lt;60 Gy), concurrent TMZ and adjuvant TMZ treatment (adjuvant therapy plus 6 cycles of TMZ group versus &lt;6 cycles of TMZ group) on the overall survival.<bold>Results.</bold> The median follow up time was 10 months (range 3-42). One- and 2-year overall survival rates were 46% and 20%, respectively. The prognostic factors important for the overall survival were a full dose RT (≥60 Gy) (p=0.005) and the application of adjuvant TMZ for 6 cycles (p=0.009).<bold>Conclusions.</bold> The results of our study confirm the efficiency of RT plus concomitant and adjuvant TMZ, with an acceptable toxicity in patients. We suggest that at least 6 cycles of adjuvant TMZ should be administered to obtain a benefit from the adjuvant treatment.</abstract>

Background. The aim of the retrospective study was to evaluate the outcome and prognostic factors of newly diagnosed glioblastoma patients who received 3-D conformal radiotherapy (RT) combined with concomitant and/or adjuvant temozalamide (TMZ) postoperatively.Patients and methods. Fifty patients with glioblastoma multiforme were treated with 3-D conformal RT combined with concomitant and/or adjuvant TMZ postoperatively. Median age was 57 years (range, 12-79) and median Karnofsky performance status (KPS) was 70 (range, 40-100). A multivariate Cox regression model was used to test the effect of age, sex, KPS, extent of surgery, tumour dimension (<5cm vs. ≥5cm), full dose RT (≥60 Gy vs. <60 Gy), concurrent TMZ and adjuvant TMZ treatment (adjuvant therapy plus 6 cycles of TMZ group versus <6 cycles of TMZ group) on the overall survival.Results. The median follow up time was 10 months (range 3-42). One- and 2-year overall survival rates were 46% and 20%, respectively. The prognostic factors important for the overall survival were a full dose RT (≥60 Gy) (p=0.005) and the application of adjuvant TMZ for 6 cycles (p=0.009).Conclusions. The results of our study confirm the efficiency of RT plus concomitant and adjuvant TMZ, with an acceptable toxicity in patients. We suggest that at least 6 cycles of adjuvant TMZ should be administered to obtain a benefit from the adjuvant treatment.

3-D conformal radiotherapy with concomitant and adjuvant temozolomide for patients with glioblastoma multiforme and evaluation of prognostic factors

Department of Radiation Oncology, Meram Faculty of Medicine, Selcuk University, Konya, Turkey

Radiology and Oncology

Background. The aim of the retrospective study was to evaluate the outcome and prognostic factors of newly diagnosed glioblastoma patients who received 3-D...

3-D conformal radiotherapy with concomitant and adjuvant temozolomide for patients with glioblastoma multiforme and evaluation of prognostic factors

Published Online: Jul 20, 2011

Page range: 213 - 219

DOI: https://doi.org/10.2478/v10019-011-0019-2

Keywords
glioblastoma multiforme, conformal radiotherapy, temozolomide, prognostic factors

This content is open access.

3-D conformal radiotherapy with concomitant and adjuvant temozolomide for patients with glioblastoma multiforme and evaluation of prognostic factors

Published Online: Jul 20, 2011

Page range: 213 - 219

DOI: https://doi.org/10.2478/v10019-011-0019-2

Keywordsglioblastoma multiforme, conformal radiotherapy, temozolomide, prognostic factors

This content is open access.

Keywords
glioblastoma multiforme, conformal radiotherapy, temozolomide, prognostic factors