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Improving prognosis of glioblastoma in the 21st century: Who has benefited most?

Glioblastoma multiforme (GBM) is the most frequent primary brain tumor in adults. Temozolomide was rapidly incorporated into first‐line treatment following the publication of the pivotal European Organization for Research and Treatment of Cancer–National Cancer Institute of Canada phase 3 trial in 2005. However, in the trial, enrollment was limited to younger patients with good performance status. Therefore, this study performed a population‐based survival analysis of patients with newly diagnosed GBM covering the period before and after the introduction of temozolomide.