Posted on: 08/10/2008

J Neurooncol. 2008 Aug 8; [Epub ahead of print]


Dose-intensity temozolomide after concurrent chemoradiotherapy in operated high-grade gliomas.

Dall'oglio S, D'Amico A, Pioli F, Gabbani M, Pasini F, Passarin MG, Talacchi A, Turazzi S, Maluta S.

Radiotherapy Department, Ospedale Civile Maggiore, Piazzale A. Stefani 1, 37126, Verona, Italy, stefano.dalloglio@azosp.vr.it.

Purpose We performed a new phase II trial enrolling patients with newly diagnosed high-grade glioma (HGG) to test the efficacy of a weekly alternating temozolomide (TMZ) schedule after surgery and concomitant chemoradiotherapy. Methods From January 2005 to January 2007, 34 patients (21 men, 13 women; age range 30-70, mean age 53) were enrolled. There were 32 glioblastoma multiforme and two anaplastic astrocytoma. Each patient after surgery received standard concurrent chemoradiotherapy. After a 4-week break, patients were then to receive 12 cycles of 1-week-on/1-week-off TMZ, with 75 mg/m(2) for the first cycle, 100 mg/m(2) for the second, 125 mg/m(2) for the third, and 150 mg/m(2) from the fourth to the 12th. Hematological toxicity was monitored every week during concomitant chemoradiotherapy and then every 4 weeks. Results After 12 months from the end of radiotherapy, the overall survival (OS) rate was 59% (20/38), distributed as follows: 60% (18/30) for recursive partitioning analysis (RPA) class 4 patients and 33% (1/3) for RPA class 6 patients; the only RPA class 1 patient was alive and disease free at the time of writing. Median OS was 13 months [95% confidence interval (CI) 11.02-14.98 months]. Hematological toxicity was seen in six patients (18%): grade 1 neutropenia in four, grade 2 thrombocytopenia in one, and grade 4 thrombocytopenia plus grade 1 neutropenia in one. There was one case of opportunistic infection (Pneumocystis carinii pneumonitis). Conclusion The toxicity of the TMZ dose-dense regimen was very low. Results seem to be encouraging for RPA lower classes (patients with good prognostic factors).

PMID: 18688571 [PubMed - as supplied by publisher]

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