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Background: The Guideline Working Group of the Korean Society for Neuro-Oncology (KSNO) conducted a nationwide questionnaire survey for diverse queries faced in the treatment of brain tumors. As part II of the survey, the aim of this study is to evaluate the national patterns of clinical practice for patients with diffuse midline glioma and meningioma.
Methods: A web-based survey was sent to all members of the KSNO by email. The survey included 4 questions of diffuse midline glioma and 6 questions of meningioma (including 2 case scenarios). All questions were developed by consensus of the Guideline Working Group.
Results: In the survey about diffuse midline glioma, 76% respondents performed histologic confirmation to identify H3K27M mutation on immunohistochemical staining or sequencing methods. For treatment of diffuse midline glioma, respondents preferred concurrent chemoradiotherapy with temozolomide (TMZ) and adjuvant TMZ (63.8%) than radiotherapy alone (34.0%). In the survey about meningioma, respondents prefer wait-and-see policy for the asymptomatic small meningioma without peritumoral edema. However, a greater number of respondents had chosen surgical resection as the first choice for all large size meningiomas without exception, and small size meningiomas with either peritumoral edema or eloquent location. There was no single opinion with major consensus on long-term follow-up plans for asymptomatic meningioma with observation policy. As many as 68.1% of respondents answered that they would not add any adjuvant therapies for World Health Organization grade II meningiomas if the tumor was totally resected including dura.
Conclusion: The survey demonstrates the prevailing clinical practice patterns for patients with diffuse midline glioma and meningioma among members of the KSNO. This information provides a point of reference for establishing a practical guideline in the management of diffuse midline glioma and meningioma.
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http://dx.doi.org/10.14791/btrt.2020.8.e6 | DOI Listing |
Oncogene
September 2025
Division of Neurosurgery, Children's Hospital Los Angeles, Los Angeles, CA, USA.
It has become evident from decades of clinical trials that multimodal therapeutic approaches with focus on cell intrinsic and microenvironmental cues are needed to improve understanding and treat the rare, inoperable, and ultimately fatal diffuse intrinsic pontine glioma (DIPG), now categorized as a diffuse midline glioma. In this study we report the development and characterization of an in vitro system utilizing 3D Tumor Tissue Analogs (TTA), designed to replicate the intricate DIPG microenvironment. The innate ability of fluorescently labeled human brain endothelial cells, microglia, and patient-derived DIPG cell lines to self-assemble has been exploited to generate multicellular 3D TTAs that mimic tissue-like microstructures, enabling an in- depth exploration of the spatio-temporal dynamics between neoplastic and stromal cells.
View Article and Find Full Text PDFJ Immunother Cancer
September 2025
Department of Pediatrics, Center for Childhood Cancer and Blood Disorders, Division of Heme/Onc and Bone Marrow Transplant, Children's Hospital Colorado, University of Colorado School of Medicine, Aurora, Colorado, USA
Background: Diffuse midline glioma (DMG) and glioblastoma (GBM) are aggressive brain tumors with limited treatment options. Macrophage phagocytosis is a complex, tightly regulated process governed by competing pro-phagocytic and anti-phagocytic signals. CD47-SIRPα signaling inhibits macrophage activity, while radiotherapy (RT) can enhance tumor immunogenicity.
View Article and Find Full Text PDFNeuron
September 2025
Department of Neurology and Neurological Sciences, Stanford University School of Medicine, Stanford, CA 94305, USA; Howard Hughes Medical Institute, Stanford University, Stanford, CA 94305, USA. Electronic address:
In the central nervous system (CNS), where neuronal activity promotes brain development and plasticity, including glial precursor cell proliferation, the activity of neurons robustly drives the initiation, growth, invasion, treatment resistance, and progression of brain cancers such as adult and pediatric hemispheric high-grade gliomas, diffuse midline gliomas such as diffuse intrinsic pontine glioma (DIPG), and pediatric low-grade optic gliomas. The underlying mechanisms involve both neuronal-activity-regulated paracrine signaling and direct electrochemical communication through neuron-to-glioma synapses. Neuronal inputs to tumors can then be propagated through connections between cancer cells.
View Article and Find Full Text PDFAbnormal blood vessels limit the delivery and function of endogenous T cells as well as adoptively transferred Chimeric Antigen Receptor (CAR)-T cells in the tumor microenvironment (TME). We recently showed that vascular normalization using anti-VEGF therapy can overcome these challenges and improve the outcome of CAR-T therapy in glioblastoma models in mice. Here, we developed a physiologically based pharmacokinetic model to simulate the dynamics of both adoptively transferred CAR-T cells and endogenous immune cells in solid tumors following vascular normalization.
View Article and Find Full Text PDFJ Neurosurg Case Lessons
September 2025
Department of Neurosciences and Reproductive and Odontostomatological Sciences, Division of Neurosurgery, University of Napoli "Federico II," Naples, Italy.
Background: Brainstem cavernous malformations (BSCMs) are rare vascular lesions, most frequently located in the pons. Their surgical management is particularly demanding due to the dense concentration within the brainstem of eloquent neural pathways and nuclei. Among various surgical routes, the endoscopic endonasal transclival approach (EETA) has been established as a valuable option for treating selected ventrally located lesions.
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