RATIONALE: Learning whether temozolomide changes semen or sperm in patients with brain tumors may help doctors learn about the long-term effects of treatment and plan the best treatment. PURPOSE: This clinical trial is studying changes in semen or sperm caused by temozolomide in patients with newly diagnosed, progressive, or recurrent primary malignant brain tumors.
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AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
assess any changes in standard semen/sperm analysis parameters
Timeframe: 6 months