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Important piece in brain tumor puzzle found by scientists

A member of the protein family known as SUMO -- small ubiquitin-like modifier -- is a key to why tumor cells multiply uncontrollably, especially in the case of glioblastoma, scientists have discovered. Glioblastoma is the most common and lethal brain cancer. Current standard treatments include surgical resection, adjuvant chemotherapy and radiotherapy. Despite the treatments, patients survive about a year and half. The cancer continues growing in part due to the presence of the cancer stem cells.
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