This study indicates that IDH1 codon 132 mutation is closely linked to the genomic profile of the tumor and constitutes an important prognostic marker in grade 2 to 4 gliomas.
The addition of six cycles of PCV after 59.4 Gy of RT increases both OS and PFS in anaplastic oligodendroglial tumors. 1p/19q-codeleted tumors derive more benefit from adjuvant PCV compared with non-1p/19q-deleted tumors.
The most frequent primary brain tumours in adults are gliomas and primary CNS lymphomas. In gliomas, molecular genetic analysis plays an increasing part in classification and treatment planning, a feature well illustrated by the chemosensitive oligodendrogliomas. Unfortunately, management of glioblastoma is still mainly palliative. Incidence of primary CNS lymphoma has increased strikingly in the past 20 years; substantial progress has been achieved in patients who are immunocompetent with the addition of methotrexate-based chemotherapy to radiotherapy, but the potential neurotoxic effects of this combination in elderly patients is worrisome.
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