Analysis of interregional differences in somatic genetic landscape and prognosis in glioblastoma
Project/Area Number |
17K16646
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Neurosurgery
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Research Institution | Osaka University (2017, 2019) Kobe University (2018) |
Principal Investigator |
Umehara Toru 大阪大学, 医学部附属病院, 医員 (20792469)
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Project Period (FY) |
2017-04-01 – 2020-03-31
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Project Status |
Completed (Fiscal Year 2019)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Keywords | 神経膠腫 / 遺伝子変異 / コピー数異常 / 不均一性 / 遺伝子 / クローン進化 / 脳腫瘍 / サンプリング |
Outline of Final Research Achievements |
We conducted the largest-ever retrospective cohort study for Japanese patients with glioblastoma and investigated the prognostic impact of copy number alterations (CNAs) using two population-based cohorts: an original Japanese cohort and a dataset from The Cancer Genome Atlas (TCGA). The results showed that the triple overlap CNAs in EGFR, CDKN2A, and PTEN (triple CNA) can be a common poor prognostic factor and that the discrepancies in the distribution of triple CNA in these two cohorts could provide a full account of the cohort disparities of survival duration.
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Academic Significance and Societal Importance of the Research Achievements |
希少疾患である膠芽腫において、国内200例を超えるIDH野生型膠芽腫の分子遺伝学的検討と詳細な生存解析を行った本研究は、アジア発の膠芽腫コホートとしては過去最大級となる。本研究成果により、「Triple CNA」などのゲノムコピー数異常が膠芽腫患者の新たな予後層別化因子となることが明らかとなった。さらにゲノムコピー数異常は、これまで報告されている膠芽腫の地域間予後格差の説明因子となり得ることが示された。地域差や人種差に着目した新たな膠芽腫臨床試験デザインや新規治療の開発が期待される。
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Report
(4 results)
Research Products
(11 results)
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[Presentation] A combination of MGMT methylation and NFKBIA copy number alteration refines prognostication of IDH-wt glioblastomas2019
Author(s)
Toru Umehara, Hideyuki Arita, Ema Yoshioka, Tomoko Shofuda, Manabu Kinoshita, Yoshinori Kodama, Naoki Kagawa, Yoshiko Okita, Masahiro Nonaka, Takehiro Uda, Junya Fukai, Daisuke Sakamoto, Kanji Mori, Haruhiko Kishima, Yonehiro Kanemura
Organizer
Society for Neuro-Oncology 24th Annual meeting
Related Report
Int'l Joint Research
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[Presentation] The landscape of somatic mutations and copy number alterations in primary glioblastoma in Japan2018
Author(s)
Umehara T, Arita H, Yoshioka E, Shofuda T, Kinoshita M, Kodama Y, Kagawa N, Fujimoto Y, Okita Y, Nonaka M, Uda T, Fukai J, Fujita K, Sakamoto D, Mori K, Kishima H, Kanemura Y
Organizer
Society for Neuro-Oncology 23rd Annual meeting
Related Report
Int'l Joint Research
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