Mohd Faizal A, Sugishita Y, Suzuki-Takahashi Y, Iwahata H, Takae S, Horage-Okutsu Y, Suzuki N. Twenty-first century oocyte cryopreservation—in vitro maturation of immature oocytes from ovarian tissue cryopreservation in cancer patients: A systematic review.
WOMEN'S HEALTH 2022;
18:17455057221114269. [PMID:
35983837 PMCID:
PMC9393350 DOI:
10.1177/17455057221114269]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Objectives:
Our 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.
Methods:
A 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.
Results:
The 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.
Conclusion:
Our 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.
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