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2021 Fiscal Year Final Research Report

Risk factors related to chromosomal aneuploidy in human blastocysts

Research Project

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Project/Area Number 19K09790
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56040:Obstetrics and gynecology-related
Research InstitutionFujita Health University

Principal Investigator

Miyai Shunsuke  藤田医科大学, 総合医科学研究所, 研究員 (50563350)

Co-Investigator(Kenkyū-buntansha) 加藤 武馬  藤田医科大学, 総合医科学研究所, 助教 (20387690)
河村 理恵  藤田医科大学, 総合医科学研究所, 助教 (20735534)
Project Period (FY) 2019-04-01 – 2022-03-31
Keywords染色体異常 / 着床前染色体検査 / モザイク
Outline of Final Research Achievements

We performed chromosomal analysis of blastocyst(PGT-A) in order to investigate the factors relating to patients, ART, or both, affect the incidence of chromosomal aneuploidy in human blastocysts.
In this study, it is suggested that (1) ovarian stimulation protocol may affect the appearance rate of mosaic embryos, (2) low sperm concentration and poor sperm motility is probably associated with decreased euploidy rate, (3) irregular dividing by observing time-lapse monitoring images of embryos do not reduce blastocyst euploidy. Also, we suggest that biopsy technique may contribute to artificial mosaicism as an extrinsic factor.

Free Research Field

細胞遺伝学

Academic Significance and Societal Importance of the Research Achievements

本研究から示唆された初期胚における染色体数的異常の出現に影響する暴露要因について、その後の介入研究にて検証できれば、染色体異常胚の出現を減少できる不妊治療の確立に役に立つ可能性がある。
また、本研究から示されたPGT-Aにおけるノイズの要因は、TEバイオプシー技術の標準化に有用な情報である。適切なPGT-A結果を得ることは、胚移植の成功率向上や生児獲得までの期間を短縮し、生児獲得率の向上に結びつくと考えられる。

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Published: 2023-01-30  

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