Publications by authors named "N Higa"

Background: Glioblastoma is an aggressive cancer that originates from abnormal cell growth in the brain and requires metabolic reprogramming to support tumor growth. Metabolic reprogramming involves the upregulation of various metabolic pathways. Although the activation of specific metabolic pathways in glioblastoma cell lines has been documented, the comprehensive profile of metabolic reprogramming and the role of each pathway in glioblastoma tissues in patients remain elusive.

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Recent advancements in aqueous humor (AH) cell-free DNA (cfDNA) genomics have opened new avenues for ex vivo molecular profiling of retinoblastoma (RB), the most common pediatric intraocular malignancy, where biopsy is typically prohibited. While these insights offer a genetic blueprint of the tumor, they lack multi-omic molecular phenotyping, which is essential for understanding the functional state. Extracellular vesicles (EVs), naturally present in AH, are promising by offering time-resolved phenotypic information.

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Glioblastomas (GBMs) are the most aggressive types of central nervous system tumors. Although certain genomic alterations have been identified as prognostic biomarkers of GBMs, the histomorphological features that predict their prognosis remain elusive. In this study, following an integrative diagnosis of 227 GBMs based on the 2021 World Health Organization classification system, the cases were histologically fractionated by cellular variations and abundance to evaluate the relationship between cellular heterogeneity and prognosis in combination with O-6-methylguanine-DNA methyltransferase gene promoter methylation (mMGMTp) status.

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Introduction: In Japan, inherited retinal dystrophy caused by biallelic variants of the gene is exceedingly rare. The purpose of this study was to describe a Japanese male patient with a novel variant in associated with Leber congenital amaurosis (LCA).

Case Report: The patient, diagnosed with LCA, exhibited infantile nystagmus and reported experiencing night blindness since early childhood.

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Article Synopsis
  • A new study evaluated a modified DNA/RNA panel for diagnosing gliomas, aiming to include fusion gene detection based on the latest WHO classification system.
  • Out of 210 glioma cases analyzed, 35 showed fusion genes, with notable fusions in glioblastomas and IDH-mutant astrocytomas.
  • The findings indicate that this bimodal panel is a reliable tool for detecting crucial genetic alterations, supporting better diagnosis and treatment planning for brain tumors.
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