Abstract
To evaluate the safety and efficacy of hypofractionated radiotherapy (RT) with a standard temozolomide (TMZ) regimen for adults with newly diagnosed glioblastoma multiforme (GBM), twenty-six consecutive adults (range 39–79 years) who met our enrollment criteria received short courses of hypofractionated RT (45 Gy in 15 fractions over three weeks) with concomitant TMZ at 75 mg/m2/d. After 28 days, TMZ was maintained at 150–200 mg/m2/d on five days for 12 cycles or until tumor progression or unacceptable toxicity. The primary end point was determined by overall survival (OS) and toxicity. Secondary assessed end points were: progression-free survival (PFS) at six months, health-related quality of life (HRQOL), and pseudo-progression. We assessed HRQOL by use of the Karnofsky performance status (KPS) and the Functional Assessment of Cancer Therapy–Brain (FACT-Br) Subscale. All 26 patients were evaluated for OS, PFS, and HRQOL. At a median follow-up of 20 months, the median OS was 15.6 months (95% confidence interval 9.0–22.2 months) with acceptable toxicity. PFS rate at six months was 65%. KPS and FACT-Br Subscale scores did not decline after this procedure. Pseudo-progression occurred in two (8%) patients. Adult patients with GBM benefitted from favorable OS and PFS rate as a result of the hypofractionated RT with TMZ. An additional advantage is that this procedure may reduce the course of treatment. Further studies using this procedure are warranted.
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The authors wish to thank Dr Hiroshi Otsubo for preparing the revised version of the manuscript and Carol L. Squires for her editorial services for which she received compensation. We appreciate the reviewers’ comments and hope that we have addressed their questions.
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Terasaki, M., Eto, T., Nakashima, S. et al. A pilot study of hypofractionated radiation therapy with temozolomide for adults with glioblastoma multiforme. J Neurooncol 102, 247–253 (2011). https://doi.org/10.1007/s11060-010-0306-6
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DOI: https://doi.org/10.1007/s11060-010-0306-6