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Home About Traditions &＃038; History Careers at YCU Academics Undergraduate Study School of International Liberal Arts School of Economics and Business Administration School of Science School of Data Science School of Medicine School of Medicine: Medical Course School of Medicine: Nursing Course Graduate Study Graduate School of Urban Social and Cultural Studies Graduate School of International Management Graduate School of Nanobioscience Graduate School of Nanobioscience: Department of Materials System Science Graduate School of Nanobioscience: Department of Life and Environmental System Science Graduate School of Data Science Graduate School of Data Science: Department of Data Science Graduate School of Data Science: Department of Health Data Science Graduate School of Medical Life Science Graduate School of Medicine Graduate School of Medicine: Department of Medicine Graduate School of Medicine: Department of Nursing Non-Degree Programs Exchange Program International Clinical Clerkship Research-Only Career Development Support Admissions Research Advanced Medical Research Center Kihara Institute for Biological Research Life at YCU Kanazawa-Hakkei Campus Life Fukuura Campus Life Living in Yokohama Clubs &＃038; Societies Health &＃038; Wellness Global International Affairs Office Exchange Program Partner Institutions Global Cooperation Institute for Sustainable Cities (GCI) 日本語 Influence on the accuracy in ChatGPT: Differences in the amount of information per medical field2023-11-15Activity of MEXT Scholarship Alumni After Returning to Their Home Country2024-04-25 Show all Intraoperative Integrated Diagnostic System for Malignant Central Nervous System Tumors Date: 21 Nov 23 Researcher(s):Kensuke Tateishi Purpose: The 2021 World Health Organization (WHO) classification of central nervous system (CNS) tumors uses an integrated approach involving histopathology and molecular profiling. Because majority of adult malignant brain tumors are gliomas and primary CNS lymphomas (PCNSL), rapid differentiation of these diseases is required for therapeutic decisions. In addition, diffuse gliomas require molecular information on single-nucleotide variants (SNV), such as IDH1/2. Here, we report an intraoperative integrated diagnostic (i-ID) system to classify CNS malignant tumors, which updates legacy frozen-section (FS) diagnosis through incorporation of a qPCR-based genotyping assay. Experimental Design: FS evaluation, including GFAP and CD20 rapid IHC, was performed on adult malignant CNS tumors. PCNSL was diagnosed through positive CD20 and negative GFAP immunostaining. For suspected glioma, genotyping for IDH1/2, TERT SNV, and CDKN2A copy-number alteration was routinely performed, whereas H3F3A and BRAF SNV were assessed for selected cases. i-ID was determined on the basis of the 2021 WHO classification and compared with the permanent integrated diagnosis (p-ID) to assess its reliability. Results: After retrospectively analyzing 153 cases, 101 cases were prospectively examined using the i-ID system. Assessment of IDH1/2, TERT, H3F3AK27M, BRAFV600E, and CDKN2A alterations with i-ID and permanent genomic analysis was concordant in 100%, 100%, 100%, 100%, and 96.4%, respectively. Combination with FS and intraoperative genotyping assay improved diagnostic accuracy in gliomas. Overall, i-ID matched with p-ID in 80/82 (97.6%) patients with glioma and 18/19 (94.7%) with PCNSL. Conclusions: The i-ID system provides reliable integrated diagnosis of adult malignant CNS tumors.Link to full article   For inquiries regarding this press release Kensuke TateishiAssociate Professor Department of Neurosurgery, Yokohama City University, Graduate School of Medicine, Yokohama, Japan. Graduate School of Medical Life Science, Yokohama City University Search ✕ Latest newsActivity of MEXT Scholarship Alumni After Returning to Their Home Country2024-04-25Intraoperative Integrated Diagnostic System for Malignant Central Nervous System Tumors2023-11-21 Research Research News Advanced Medical Research Center Kihara Institute for Biological Research Researcher Database Global International Affairs Office International Student Support Exchange Program Partner Institutions Global Cooperation Institute for Sustainable Cities (GCI) GCI: Overview GCI: Activities International Academic Consortium for Sustainable Cities (IACSC) Living in Yokohama Admissions 22-2 Seto, Kanazawa-ku, Yokohama, Kanagawa 236-0027 Japan Undergraduate Schools International Liberal Arts Economics and Business Administration Science Data Science Medicine Graduate Schools Urban Social and Cultural Studies International Management Nanobioscience Medical Life Science Medicine  Data Science Admissions Undergraduate Graduate Non-Degree Programs Research Advanced Medical Research Center Kihara Institute for Biological Research Research Database Hospitals Yokohama City University Hospital Yokohama City University Medical Center Life at YCU Campus Life Living in Yokohama Clubs & Societies Health & Wellness Global International Affairs Office Global Cooperation Institute for Sustainable Cities Exchange Programs Partner Institutions NewsActivity of MEXT Scholarship Alumni After Returning to Their Home Country2024-04-25Simplifying the Estimation of Volatile Organic Compounds Emitted From Wildfires2023-10-26Event Report: The 14th IACSC International Symposium/General Assembly2023-10-10 © 2021 Yokohama City University. 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