Evidence map›Paper›PMID 35983837›Full record

SynthesisWomen's health (London, England)

Twenty-first century oocyte cryopreservation-in vitro maturation of immature oocytes from ovarian tissue cryopreservation in cancer patients: A systematic review.

Ahmad Mohd Faizal, Yodo Sugishita, Yuki Suzuki-Takahashi, Hideyuki Iwahata, Seido Takae, Yuki Horage-Okutsu, Nao Suzuki

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Women's health (London, England). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
4.6field-weighted citation impact, top 5% of its field
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

15 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. [Ovarian tissue cryopreservation and transplantation: a review of clinical progress in fertility preservation].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2025
    Review
  5. Review
  6. Article
  7. Review
  8. Review
  9. Review
  10. Review
  11. Review
  12. Review
  13. Article
  14. Article
  15. The spectrum ofFrontiers in endocrinology · 2023
    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

7 authors at 1 institution in 2 countries.

Ahmad Mohd FaizalDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.
Yodo SugishitaDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.
Yuki Suzuki-TakahashiDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.
Hideyuki IwahataDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.
Seido TakaeDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.
Yuki Horage-OkutsuDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.
Nao SuzukiDepartment of Obstetrics & Gynecology, St. Marianna University School of Medicine, Kawasaki, Japan.ORCID 0000-0002-7440-8127
St. Marianna University School of Medicine · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesOur review aimed to consolidate the latest update on the application of in vitro maturation among immature oocyte harvest in combination with ovarian tissue cryopreservation known as ovarian tissue oocyte-in vitro maturation.

methodsA thorough search for relevant studies was conducted via PubMed, Google Scholar, EMBASE, and clinical.gov databases up to December 2020. The primary outcome was the oocyte maturation rate, which measured the number of immature oocytes (geminal vesicle stage) that progressed to mature oocytes (meiosis II stage) following in vitro maturation. The secondary outcomes were the fertilization rate following intracytoplasmic sperm injection/in vitro fertilization of these oocytes for the embryo cryopreservation cohort. Our review included pre-pubertal girls and women with cancer who underwent ovarian tissue oocyte-in vitro maturation as fertility preservation.

resultsThe primary search identified 207 studies. Twelve manuscripts were selected for inclusion in our review following duplication assessment, title and abstract screening, and full-text evaluation tailored to our inclusion criteria. All the population belonged to a cancer group and underwent concurrent ovarian tissue oocyte-in vitro maturation. A total of 5724 immature oocytes were obtained following ovarian tissue cryopreservation. Approximately 33.84% of the immature oocytes successfully matured via in vitro maturation, which were cryopreserved as oocytes or fertilized as embryos and subsequently stored for future use.

conclusionOur review proposed the potential application of ovarian tissue oocyte-in vitro maturation in increasing the number of mature oocytes. The acceptable improvement in oocyte maturation rate following in vitro maturation indicates that improving oocyte outcomes is an excellent cost-effective strategy for fertility preservation among women with cancer.

Indexed as

Fertility PreservationNeoplasmsCryopreservationFemaleHumansIn Vitro Oocyte Maturation TechniquesMaleOocytesSemencancerfertility preservationin vitro maturationoocyte cryopreservationovarian tissue cryopreservation

Identifiers

PMID35983837
PMCPMC9393350
OpenAlexW4292325082

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.