Adaptive radiotherapy for glioblastoma multiforme-The impact on disease outcome

Zoltan Vegvary, Barbara Darazs, Viktor Paczona, Agnes Dobi, Zita Reisz, Zoltan Varga, Emese Fodor, Adrienn Cserhati, Judit Olah, David Kis, Pal Barzo, Katalin Hideghety

Research output: Contribution to journalArticle

Abstract

Background/Aim: To study the changes of glioblastoma multiforme during chemoradiotherapy (CRT) and to evaluate the impact of changes on dosimetry and clinical outcomes. Patients and Methods: Forty-three patients underwent volumetric imaging-based replanning. Prognostic factors and gross tumor volume changes in relation to overall survival and the effect of adaptive replanning were statistically analyzed. Results: Patients with total tumor removal, with shorter time to CRT (<27 days), with methylated O-6 methylguanine DNA methyltransferase and good performance status (>60%) had better survival. Tumor shrinkage in 24 patients resulted in improved survival compared to 19 in whom tumor was unchanged or progressed (25.3 vs. 11.1 months, p=0.04). Adapted planning target volume allowed a reduction in irradiated volume, while increasing survival (12.06 vs. 28.98 months, p=0.026). Conclusion: Tumor response during CRT has significant impact on the outcome. Adaptation of the planning target volume to the tumor changes proved to be beneficial and warrants further investigation.

Original languageEnglish
Pages (from-to)4237-4244
Number of pages8
JournalAnticancer research
Volume40
Issue number8
DOIs
Publication statusPublished - Aug 2020

Keywords

  • Adaptive radiotherapy
  • Brain tumor
  • Gliomas
  • Replanning

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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  • Cite this

    Vegvary, Z., Darazs, B., Paczona, V., Dobi, A., Reisz, Z., Varga, Z., Fodor, E., Cserhati, A., Olah, J., Kis, D., Barzo, P., & Hideghety, K. (2020). Adaptive radiotherapy for glioblastoma multiforme-The impact on disease outcome. Anticancer research, 40(8), 4237-4244. https://doi.org/10.21873/anticanres.14425