Single-arm phase ii study of conformal radiation therapy and temozolomide plus fractionated stereotactic conformal boost in high-grade gliomas: Final report

Mario Balducci, Giuseppina Apicella, Stefania Manfrida, Annunziato Mangiola, Alba Fiorentino, Luigi Azario, Giuseppe Roberto D'Agostino, Vincenzo Frascino, Nicola Dinapoli, Giovanna Mantini, Alessio Albanese, Pasquale De Bonis, Silvia Chiesa, Vincenzo Valentini, Carmelo Anile, Numa Cellini

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Abstract

Purpose: To assess survival, local control and toxicity using fractionated stereotactic conformal radiotherapy (FSCRT) boost and temozolomide in high-grade gliomas (HGGs). Patients and Methods: Patients affected by HGG, with a CTV 1(clinical target volume, representing tumor bed ± residual tumor + a margin of 5 mm) ≤ 8 cm were enrolled into this phase II study. Radiotherapy (RT, total dose 6,940 cGy) was administered using a combination of two different techniques: three-dimensional conformal radiotherapy (3D-CRT, to achieve a dose of 5,040 or 5,940 cGy) and FSCRT boost (19 or 10 Gy) tailored by CTV1diameter (≤ 6 cm and > 6 cm, respectively). Temozolomide (75 mg/m2) was administered during the first 2 or 4 weeks of RT. After the end of RT, temozolomide (150-200 mg/m2) was administered for at least six cycles. The sample size of 41 patients was assessed by the single proportion-powered analysis. Results: 41 patients (36 with glioblastoma multiforme [GBM] and five with anaplastic astrocytoma [AA]) were enrolled; RTOG neurological toxicities G1-2 and G3 were 12% and 3%, respectively. Two cases of radionecrosis were observed. At a median follow-up of 44 months (range 6-56 months), global and GBM median overall survival (OS) were 30 and 28 months. The 2-year survival rate was significantly better compared to the standard treatment (63% vs. 26.5%; p <0.00001). Median progression-free survival (PFS) was 11 months, in GBM patients 10 months. Conclusion: FSCRT boost plus temozolomide is well tolerated and seems to increase survival compared to the standard treatment in patients with HGG.

Original languageEnglish
Pages (from-to)558-564
Number of pages7
JournalStrahlentherapie und Onkologie
Volume186
Issue number10
DOIs
Publication statusPublished - Oct 2010

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Keywords

  • Boost
  • Malignant glioma
  • Stereotactic radiotherapy
  • Temozolomide

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Oncology

Cite this

Balducci, M., Apicella, G., Manfrida, S., Mangiola, A., Fiorentino, A., Azario, L., D'Agostino, G. R., Frascino, V., Dinapoli, N., Mantini, G., Albanese, A., De Bonis, P., Chiesa, S., Valentini, V., Anile, C., & Cellini, N. (2010). Single-arm phase ii study of conformal radiation therapy and temozolomide plus fractionated stereotactic conformal boost in high-grade gliomas: Final report. Strahlentherapie und Onkologie, 186(10), 558-564. https://doi.org/10.1007/s00066-010-2101-x