Is protracted low-dose temozolomide feasible in glioma patients?
نویسندگان
چکیده
The authors investigated the safety of 75 mg/m2 temozolomide for 21 days every 28 days in glioma patients. This schedule could lead to DNA repair enzyme O6-alkylguanine-DNA alkyltransferase depletion, contributing to overcoming drug resistance. Although Phase III studies are forthcoming, no data are available on the long-term toxicity of temozolomide, which, in this series, incurred prolonged, cumulative lymphopenia, which leads to a high incidence of infections.
منابع مشابه
Efficacy and tolerability of temozolomide in an alternating weekly regimen in patients with recurrent glioma.
PURPOSE Evaluation of toxicity and efficacy of an alternating weekly regimen of temozolomide administered 1 week on and 1 week off in patients with recurrent glioma. PATIENTS AND METHODS Ninety adult patients with recurrent gliomas accrued in one center received chemotherapy with temozolomide at 150 mg/m(2)/d (days 1 through 7 and 15 through 21 every 4 weeks) with individual dose adjustments ...
متن کاملEfficacy of low dose temozolomide in combination with bortezomib in U87 glioma cells: a flow cytometric analysis
INTRODUCTION Maximizing responses of malignant gliomas is hampered by resistance to temozolomide (TMZ). Increasing efficacy but not toxicity is a key issue when testing drug combinations. The antimyeloma agent bortezomib (BZ) has shown promising results in vitro and is currently being tested in glioblastoma (GBM) patients. In this study we investigate whether reduction of TMZ dosage is feasible...
متن کاملRechallenge with temozolomide with different scheduling is effective in recurrent malignant gliomas.
Treatment of recurrent malignant glioma, which has a poor patient prognosis, has not been standardised. Moreover, it is unclear whether repeated treatment with temozolomide is effective in patients who received previous temozolomide treatment before developing a recurrence. Here, we present the results of a high-dose individually adapted 21-day regimen demonstrating that rechallenge is effectiv...
متن کاملLETTER TO THE EDITOR Prolonged and severe myelosuppression in two patients after low-dose temozolomide treatment- case study and review of literature
Temozolomide is an alkylating agent used frequently in the management of gliomas. Although temozolomide is generally safe, rarely it can cause life threatening complications. Here we report the cases of two patients who developed prolonged and severe pancytopenia after low dose continuous temozolomide concurrently with cranial radiotherapy. The pancytopenia lasted two to six months. Both the pa...
متن کاملIn Vitro Radiosensitizing Effects of Temozolomide on U87MG Cell Lines of Human Glioblastoma Multiforme
Background: Glioma is the most common primary brain tumor with poor prognosis. Temozolomide (TMZ) has been used with irradiation (IR) to treat gliomas. The aim of the present study was to evaluate the cytotoxic and radiosensitizing effect of TMZ when combined with high-dose and high-dose rate of gamma irradiation in vitro.Methods: Two ‘U87MG’ cell lines and skin fibroblast were cultured and ass...
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ورودعنوان ژورنال:
- Neurology
دوره 66 3 شماره
صفحات -
تاریخ انتشار 2006