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Establishing a new disease concept and developing diagnostic methods for intractable and undiagnosed eye diseases in Japan

Research Project

Project/Area Number 20K09825
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56060:Ophthalmology-related
Research InstitutionHamamatsu University School of Medicine

Principal Investigator

HOTTA Yoshihiro  浜松医科大学, 医学部, 教授 (90173608)

Co-Investigator(Kenkyū-buntansha) 岩泉 守哉  浜松医科大学, 医学部, 助教 (60444361)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords難治性未診断疾患 / 遺伝子診断 / CDK9 / NEK1 / RPGRIP1 / Uniparental disomy / 網膜ジストロフィー / 希少眼疾患 / 難治性未診断眼疾患
Outline of Research at the Start

本研究は未診断疾患イニシアチブ(IRUD)拠点病院ネットワークにより収集したわが国の眼科単独の難治性未診断患者に対して遺伝子診断を実施して確定診断を行い、新たな疾患概念を提唱し、その疾患の診断法を開発する事を目的とする。検査した症例から既報の原因遺伝子が検出された場合でもこれまでに報告されていない表現型を呈する症例から同定出来た際は疾患概念を再考してこれまでの診断法の改定を行う。本研究により難治性未診断眼疾患患者の確定診断を行い、臨床情報と遺伝情報を蓄積する事で同一の臨床症状を呈する患者に対して自然経過に伴う視機能予測や早期に必要な検査や治療が可能となり、患者のQOL向上が期待できる。

Outline of Final Research Achievements

The purpose of this study is to perform genetic diagnosis on patients with intractable, undiagnosed eye diseases in Japan, identify the causative genes, and establish a new concept of the disease. We employed next-generation sequencers to perform genetic diagnosis.
We have reported that 1) CDK9 could the causative gene for a new multiple malformation syndrome similar to CHARGE syndrome accompanied by Inherited retinal dystrophy (IRD), 2) IRD without systemic disease caused by NEK1 gene mutations, 3) IRD which could be caused by uniparental disomy, and 4) high frequent pathogenic deletion of the RPGRIP1 gene in Japanese pediatric IRD.We believe that genetic analysis using next-generation sequencers is effective in diagnosing patients with intractable, undiagnosed eye diseases. Genetic counseling requires careful consideration because pediatric IRD includes complex genetic abnormalities such as uniparental disomy.

Academic Significance and Societal Importance of the Research Achievements

眼所見を有しながら通常の医療では診断に至る事が困難な患者(難治性未診断眼疾患患者)は、まれではあるが存在して、患者・患児と家族は苦しんでいる。本研究はわが国の希少・未診断眼疾患患者に対して次世代シーケンサーを用いた遺伝子検査により確定診断を行った。
原因遺伝子の同定によって、新たな疾患概念を確立し、新しい表現型を発見することができた。さらに、まれな遺伝子変異を発見し、小児網膜ジストロフィーのわが国における高頻度変異を報告した。本研究によって、苦しんでいた患者の診断が可能になった、また、精緻な遺伝カウンセリングを行うことにつながり、患者・患児に有用な情報を提供することができた。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021 2020

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] A pediatric case of congenital stromal corneal dystrophy caused by the novel variant c.953del of the DCN gene.2023

    • Author(s)
      Morikawa H, Nishina S, Torii K, Hosono K, Yokoi T, Shigeyasu C, Yamada M, Kosuga M, Fukami M, Saitsu H, Azuma N, Hori Y, Hotta Y.
    • Journal Title

      Hum Genome Var

      Volume: 10 Issue: 1 Pages: 9-9

    • DOI

      10.1038/s41439-023-00239-8

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Structural Abnormalities Are Deeply Involved in the Cause of RPGRIP1-Related Retinal Dystrophy in Japanese Patients.2023

    • Author(s)
      Torii K, Nishina S, Morikawa H, Mizobuchi K, Takayama M, Tachibana N, Kurata K, Hikoya A, Sato M, Nakano T, Fukami M, Azuma N, Hayashi T, Saitsu H, Hotta Y.
    • Journal Title

      Int J Mol Sci

      Volume: 24 Issue: 18 Pages: 13678-13678

    • DOI

      10.3390/ijms241813678

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] De novo heterozygous variants in <i>KIF5B</i> cause kyphomelic dysplasia2022

    • Author(s)
      Itai Toshiyuki、Wang Zheng、Nishimura Gen、Ohashi Hirofumi、Guo Long、Wakano Yasuhiro、Sugiura Takahiro、Hayakawa Hiromi、Okada Mayumi、Saisu Takashi、Kitta Ayana、Doi Hiroshi、Kurosawa Kenji、Hotta Yoshihiro、Hosono Katsuhiro、Sato Miho、他
    • Journal Title

      Clinical Genetics

      Volume: 102 Issue: 1 Pages: 3-11

    • DOI

      10.1111/cge.14133

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Likely pathogenic structural variants in genetically unsolved patients with retinitis pigmentosa revealed by long-read sequencing2022

    • Author(s)
      Sano Yusuke、Koyanagi Yoshito、Wong Jing Hao、Murakami Yusuke、Fujiwara Kohta、Endo Mikiko、Aoi Tomomi、Hashimoto Kazuki、Nakazawa Toru、Wada Yuko、Ueno Shinji、Gao Dan、Murakami Akira、Hotta Yoshihiro、Ikeda Yasuhiro、Nishiguchi Koji M、Momozawa Yukihide、Sonoda Koh-Hei、Akiyama Masato、Fujimoto Akihiro
    • Journal Title

      Journal of Medical Genetics

      Volume: 59 Issue: 11 Pages: 1133-1138

    • DOI

      10.1136/jmedgenet-2022-108428

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genetic characterization of 1210 Japanese pedigrees with inherited retinal diseases by whole‐exome sequencing2022

    • Author(s)
      Suga Akiko、Yoshitake Kazutoshi、Fukuchi Takeo、Hatase Tetsuhisa、Horiguchi Masayuki、Shimada Yoshiaki、Tanikawa Atsuhiro、Yamamoto Shuichi、Miura Gen、Ito Nana、Murakami Akira、Fujimaki Takuro、Hotta Yoshihiro、Tanaka Koji、Iwata Takeshi、他
    • Journal Title

      Human Mutation

      Volume: 43 Issue: 12 Pages: 2251-2264

    • DOI

      10.1002/humu.24492

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] A case of siblings with juvenile retinitis pigmentosa associated with <i>NEK1</i> gene variants2022

    • Author(s)
      Hikoya Akiko、Hosono Katsuhiro、Ono Kaoru、Arai Shinji、Tachibana Nobutaka、Kurata Kentaro、Torii Kaoruko、Sato Miho、Saitsu Hirotomo、Ogata Tsutomu、Hotta Yoshihiro
    • Journal Title

      Ophthalmic Genetics

      Volume: - Issue: 5 Pages: 1-6

    • DOI

      10.1080/13816810.2022.2141788

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Maternal Uniparental Isodisomy of Chromosome 4 and 8 in Patients with Retinal Dystrophy: SRD5A3-Congenital Disorders of Glycosylation and RP1-Related Retinitis Pigmentosa2022

    • Author(s)
      Tachibana Nobutaka、Hosono Katsuhiro、Nomura Shuhei、Arai Shinji、Torii Kaoruko、Kurata Kentaro、Sato Miho、Shimakawa Shuichi、Azuma Noriyuki、Ogata Tsutomu、Wada Yoshinao、Okamoto Nobuhiko、Saitsu Hirotomo、Nishina Sachiko、Hotta Yoshihiro
    • Journal Title

      Genes

      Volume: 13 Issue: 2 Pages: 359-359

    • DOI

      10.3390/genes13020359

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Retinal Features of Family Members With Familial Exudative Vitreoretinopathy Caused By Mutations in <i>KIF11</i> Gene2021

    • Author(s)
      Kondo Hiroyuki、Matsushita Itsuka、Nagata Tatsuo、Fujihara Etsuko、Hosono Katsuhiro、Uchio Eiichi、Hotta Yoshihiro、Kusaka Shunji
    • Journal Title

      Translational Vision Science &amp; Technology

      Volume: 10 Issue: 7 Pages: 18-18

    • DOI

      10.1167/tvst.10.7.18

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genotype-Phenotype Correlations in RP1-Associated Retinal Dystrophies: A Multi-Center Cohort Study in JAPAN2021

    • Author(s)
      Mizobuchi Kei、Hayashi Takaaki、Oishi Noriko、Kubota Daiki、Kameya Shuhei、Higasa Koichiro、Futami Takuma、Kondo Hiroyuki、Hosono Katsuhiro、Kurata Kentaro、Hotta Yoshihiro、Yoshitake Kazutoshi、Iwata Takeshi、Matsuura Tomokazu、Nakano Tadashi
    • Journal Title

      Journal of Clinical Medicine

      Volume: 10 Issue: 11 Pages: 2265-2265

    • DOI

      10.3390/jcm10112265

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Biallelic CDK9 variants as a cause of a new multiple-malformation syndrome with retinal dystrophy mimicking the CHARGE syndrome2021

    • Author(s)
      Nishina Sachiko、Hosono Katsuhiro、Ishitani Shizuka、Kosaki Kenjiro、Yokoi Tadashi、Yoshida Tomoyo、Tomita Kaoru、Fukami Maki、Saitsu Hirotomo、Ogata Tsutomu、Ishitani Tohru、Hotta Yoshihiro、Azuma Noriyuki
    • Journal Title

      Journal of Human Genetics

      Volume: - Issue: 10 Pages: 1021-1027

    • DOI

      10.1038/s10038-021-00909-x

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ゲノム医療をめざして~眼遺伝学の研究と臨床~2024

    • Author(s)
      堀田喜裕
    • Organizer
      第446回東海眼科学会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] The structural abnormalities of RPGRIP1 are deeply involved in the cause of Leber congenital amaurosis in Japanese patients.2023

    • Author(s)
      Hotta Yoshihiro
    • Organizer
      The 20th Kyungpook-Hamamatsu Joint Medical Symposium
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 網膜ジストロフィーの遺伝学的検査2023

    • Author(s)
      堀田喜裕
    • Organizer
      京都大学臨床眼科討論
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] ゲノム医療をめざして~眼遺伝学の研究と臨床~2022

    • Author(s)
      堀田喜裕
    • Organizer
      第126回日本眼科学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 網膜ジストロフィーを発症した多発奇形症候群の1例2020

    • Author(s)
      仁科幸子、細野克博、横井匡、吉田朋世、富田香、深見真紀、小崎健次郎、堀田喜裕、東範行
    • Organizer
      第45回日本小児眼科学会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2025-01-30  

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