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Schiff D, Van den Bent M, Vogelbaum MA, Wick W, Miller CR, Taphoorn M, Pope W, Brown PD, Platten M, Jalali R, Armstrong T, Wen PY. Recent developments and future directions in adult lower-grade gliomas: Society for Neuro-Oncology (SNO) and European Association of Neuro-Oncology (EANO) consensus. Neuro Oncol 2020; 21:837-853. [PMID: 30753579 DOI: 10.1093/neuonc/noz033] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The finding that most grades II and III gliomas harbor isocitrate dehydrogenase (IDH) mutations conveying a relatively favorable and fairly similar prognosis in both tumor grades highlights that these tumors represent a fundamentally different entity from IDH wild-type gliomas exemplified in most glioblastoma. Herein we review the most recent developments in molecular neuropathology leading to reclassification of these tumors based upon IDH and 1p/19q status, as well as the potential roles of methylation profiling and deletional analysis of cyclin-dependent kinase inhibitor 2A and 2B. We discuss the epidemiology, clinical manifestations, benefit of surgical resection, and neuroimaging features of lower-grade gliomas as they relate to molecular subtype, including advanced imaging techniques such as 2-hydroxyglutarate magnetic resonance spectroscopy and amino acid PET scanning. Recent, ongoing, and planned studies of radiation therapy and both cytotoxic and targeted chemotherapies are summarized, including both small molecule and immunotherapy approaches specifically targeting the mutant IDH protein.
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Affiliation(s)
- David Schiff
- Department of Neurology, University of Virginia, Charlottesville, Virginia
| | - Martin Van den Bent
- Department of Neurology, Erasmus MC Cancer Institute, Rotterdam, The Netherlands
| | | | - Wolfgang Wick
- Divison of Neuro-Oncology, German Cancer Research Center, Heidelberg, Germany
| | - C Ryan Miller
- Pathology and Lab Medicine, University of North Carolina, Chapel Hill, North Carolina
| | - Martin Taphoorn
- Department of Neurology, Leiden University Medical Center, Leiden, The Netherlands
| | - Whitney Pope
- Section of Neuroradiology, UCLA, Los Angeles, California
| | - Paul D Brown
- Department of Radiation Oncology, Mayo Clinic, Rochester, Minnesota
| | - Michael Platten
- Department of Neurology, Mannheim University Hospital, Mannheim, Germany
| | | | - Terri Armstrong
- Neuro-Oncology Branch, National Institute of Health, Bethesda, Maryland
| | - Patrick Y Wen
- Center for Neuro-Oncology, Dana-Farber Cancer Institute, Boston, Massachusetts
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