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Molecular epidemiologic studies for evaluating causal relationship between vitamin D and cancer risk based on large-scale cohort study.

Research Project

Project/Area Number 20H03950
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 58030:Hygiene and public health-related: excluding laboratory approach
Research InstitutionNational Cancer Center Japan

Principal Investigator

Iwasaki Motoki  国立研究開発法人国立がん研究センター, がん対策研究所, 部長 (60392338)

Co-Investigator(Kenkyū-buntansha) 口羽 文  神奈川県立保健福祉大学, ヘルスイノベーション研究科, 准教授 (40510699)
片桐 諒子 (武藤 諒子 / 片桐諒子)  国立研究開発法人国立がん研究センター, がん対策研究所, 室長 (60813508)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥17,810,000 (Direct Cost: ¥13,700,000、Indirect Cost: ¥4,110,000)
Fiscal Year 2022: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2021: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Keywords血中ビタミンD濃度 / がん罹患 / コホート研究 / メンデルのランダム化解析
Outline of Research at the Start

本研究では、アンケート情報と生体試料を繰り返し収集している大規模前向きコホート研究という極めて独自性が高い研究基盤を最大限に活用し、ビタミンDとがん罹患との因果関係評価に資するエビデンスの構築を目的とした研究を実施する。具体的には、①血中ビタミンD濃度の繰り返し測定値を用いた検討、②ベースライン調査集団に含まれない5年後調査集団を対象とした検討、③アンケート情報から血中ビタミンD濃度を予測した値を用いた検討、④メンデルのランダム化解析を用いた検討、と4つの課題について検討する。

Outline of Final Research Achievements

In order to utilize data from baseline and 5-year follow-up survey in the Japan Public Health Center-based Prospective (JPHC) Study, we proposed analytic framework for combining data from two case-cohorts established on the partially overlapped populations at two different surveys. We developed a new case-cohort including 5377 cancer cases based on the 5-year follow-up survey. Using data from the Japanese Consortium of Genetic Epidemiology and other studies in Japan, we conducted Mendelian randomization analyses and found no significant association between the genetically predicted plasma 25-hydroxyvitamin D concentration and total or colorectal cancer risk.

Academic Significance and Societal Importance of the Research Achievements

前向きコホート研究における血漿検体を用いた繰り返しデータの解析基盤は、国際的に見ても極めてユニークであり、この基盤を活用した研究の展開が期待される。未知・未観察の交絡因子の影響を制御するという観点において、メンデルのランダム化解析からのエビデンスは重要であり、ビタミンDとがんとの因果関係評価への貢献は大きい。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (5 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] Association of 25-hydroxyvitamin D with risk of overall and colorectal cancer among Japanese using a Mendelian randomization approach.2023

    • Author(s)
      Katagiri R, Goto A, Nakano S, Nakatochi M, Koyanagi YN, Iwagami M, Hanyuda A, Yamaji T, Sawada N, Nakamura Y, Nakamura S, Kuriki K, Suzuki S, Imoto I, Momozawa Y, Oze I, Ito H, Tsugane S, Wakai K, Matsuo K, Iwasaki M.
    • Journal Title

      Sci Rep.

      Volume: 13(1) Issue: 1 Pages: 2384-2384

    • DOI

      10.1038/s41598-023-29596-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] メンデルランダム化法による血中ビタミンD濃度と全がん・大腸がんリスクの関連の検討2023

    • Author(s)
      片桐諒子、後藤温、中野詩織、中杤昌弘、伊藤 秀美、若井 建志、松尾 恵太郎、岩崎基
    • Organizer
      第93回日本衛生学会学術総会
    • Related Report
      2022 Annual Research Report
  • [Presentation] ビタミンDとがん2022

    • Author(s)
      岩崎基
    • Organizer
      第46回日本女性栄養・代謝学会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Plasma biomarker studies on cancer within the Japan Public Health Center-based prospective study.2022

    • Author(s)
      Motoki Iwasaki
    • Organizer
      International Symposium "Pan-cohort studies; The future of population health"
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Two-Stage Sampling Framework for Combining Case-Cohort Studies from Partially Overlapped Cohorts with Different Timings of Biomarker Measurement.2021

    • Author(s)
      Aya Kuchiba, Tomohiro Shinozaki.
    • Organizer
      International Biometric Society ENAR (Eastern North American Region) Spring Meeting
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research

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Published: 2020-04-28   Modified: 2024-01-30  

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