Evidence map›Paper›PMID 33488283›Full record

ReviewReproductive medicine and biology2021

Mitochondrial replacement by genome transfer in human oocytes: Efficacy, concerns, and legality.

Mitsutoshi Yamada, Suguru Sato, Reina Ooka, Kazuhiro Akashi, Akihiro Nakamura, Kenji Miyado, Hidenori Akutsu, Mamoru Tanaka

Abstract readReview
In one paragraph

Review in Reproductive medicine and biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

14 citing papers in PubMed.

  1. Ovarian ageing: from biological constraint to emerging therapeutic frontier.Journal of assisted reproduction and genetics · 2026
    Review
  2. Review
  3. Review
  4. Review
  5. Review
  6. Abnormalities of Oocyte Maturation: Mechanisms and Implications.International journal of molecular sciences · 2024
    Review
  7. Article
  8. Review
  9. Article
  10. Review
  11. Article
  12. Closing the knowledge void between healthy gametes and healthy offspring.Journal of assisted reproduction and genetics · 2022
    Article
  13. Article
  14. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Mitsutoshi YamadaDepartment of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan.ORCID https://orcid.org/0000-0002-7560-316X
Suguru SatoDepartment of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan.
Reina OokaDepartment of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan.
Kazuhiro AkashiDepartment of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan.
Akihiro NakamuraDepartment of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan.
Kenji MiyadoDepartment of Reproductive Biology National Research Institute for Child Health and Development Tokyo Japan.
Hidenori AkutsuDepartment of Reproductive Biology National Research Institute for Child Health and Development Tokyo Japan.
Mamoru TanakaDepartment of Obstetrics and Gynecology Keio University School of Medicine Tokyo Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPathogenic mitochondrial (mt)DNA mutations, which often cause life-threatening disorders, are maternally inherited via the cytoplasm of oocytes. Mitochondrial replacement therapy (MRT) is expected to prevent second-generation transmission of mtDNA mutations. However, MRT may affect the function of respiratory chain complexes comprised of both nuclear and mitochondrial proteins.

methodsBased on the literature and current regulatory guidelines (especially in Japan), we analyzed and reviewed the recent developments in human models of MRT. MAIN

findingsMRT does not compromise pre-implantation development or stem cell isolation. Mitochondrial function in stem cells after MRT is also normal. Although mtDNA carryover is usually less than 0.5%, even low levels of heteroplasmy can affect the stability of the mtDNA genotype, and directional or stochastic mtDNA drift occurs in a subset of stem cell lines (mtDNA genetic drift). MRT could prevent serious genetic disorders from being passed on to the offspring. However, it should be noted that this technique currently poses significant risks for use in embryos designed for implantation.

conclusionThe maternal genome is fundamentally compatible with different mitochondrial genotypes, and vertical inheritance is not required for normal mitochondrial function. Unresolved questions regarding mtDNA genetic drift can be addressed by basic research using MRT.

Indexed as

mitochondrial diseasemitochondrial DNAmitochondrial DNA carryovermitochondrial replacementmtDNA genetic drift

Identifiers

PMID33488283
PMCPMC7812462

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.