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2022 Fiscal Year Final Research Report

Population analysis of mutation frequencies and trends of DYT gene groups in dystonia cases

Research Project

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Project/Area Number 20K17942
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionTokyo Women's Medical University

Principal Investigator

Azuma Kenko  東京女子医科大学, 医学部, 助教 (80724070)

Project Period (FY) 2020-04-01 – 2023-03-31
Keywordsジストニア / 遺伝性疾患 / 遺伝子解析
Outline of Final Research Achievements

A total of 170 cases of hereditary dystonia were analyzed for 16 dystonia-related genes using next-generation sequencing. As a result, we detected variants that appeared to be significant in 65 cases. As a trend, the top three most frequently detected genes were TOR1A, KMT2B, and SGCE, accounting for 72% of the 65 cases. All three genes are characteristic dystonia-causing genes, and we analyzed the effect of the variants on SGCE, which was characterized by the localization of the variants. As a result, they found that none of the variants detected in SGCE was damaging, which they published in a paper in Clinical Genetics.

Free Research Field

分子生物学

Academic Significance and Societal Importance of the Research Achievements

希少疾患であり、難病指定もされているジストニアの集団的解析は国内初であり、世界的にも数は少ない。今回得られた結果から、遺伝性ジストニアの遺伝子の傾向を見ることができた。今後さらに症例を積み重ねることによって疾患のデータベースの構築に役立つと思われる。遺伝性ジストニアは、症状から原因遺伝子を特定するのが難しい例もあるが、今回の16遺伝子の解析を通して、2.5人に1人の割合で何らかのバリアントを検出することができたことから、今回の解析結果を省みて、今後方法を工夫することで、さらに割合を高めることができると考えている。

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Published: 2024-01-30  

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