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Abstract
Background: Temozolomide (TMZ) has demonstrated clinical antitumor activity. In the US and the EU, TMZ is licensed for the treatment of glioblastoma multiforme concurrently with radiation followed by a maintenance treatment, and for refractory anaplastic astrocytoma or glioblastoma multiforme. TMZ is also approved for metastatic melanoma in > 20 countries worldwide. Objectives: To ascertain the safety profile of TMZ. Methods: Synthesis of evidence from published clinical trials and the investigator's brochure of the manufacture. Conclusion: For a cytotoxic cancer-treatment agent, TMZ has an acceptable safety profile. Lymphopenia is common in patients treated with all doses and schedules of TMZ. All patients receiving TMZ should be observed for lymphopenia and potential opportunistic infections, particularly when it is combined with other immune suppressive therapies.