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In vitro maturation of immature oocytes for fertility preservation in cancer patients compared to control patients with fertility problems in an in vitro fertilization program Cover

In vitro maturation of immature oocytes for fertility preservation in cancer patients compared to control patients with fertility problems in an in vitro fertilization program

Open Access
|Dec 2021

Abstract

Background

The aim of this study was to determine whether in vitro maturation (IVM) of immature oocytes after controlled hormonal stimulation of the ovaries could be important in cancer patients to improve their chances of conception in the future.

Patients and methods

After ovarian stimulation in cancer patients, the number of oocytes and their quality and maturity were compared to control patients with fertility problems in the in vitro fertilization (IVF) program. In both groups of patients, immature oocytes at the developmental stage of germinal vesicle were matured in vitro and the proportion of oocytes that matured in vitro was compared between groups. In a subset of women with fertility problems, intracytoplasmic sperm injection (ICSI) was performed on IVM oocytes to assess their ability to be fertilized and develop into an embryo compared to vivo matured oocytes in the same cycles and consider the procedure in cancer patients.

Results

In patients with different cancers, the disease did not affect the number and quality of retrieved oocytes. In cancer patients, there was even a significantly lower proportion of immature oocytes than in patients with fertility problems (30.0% vs. 43.6%; P < 0.05). However, in patients with cancer, fewer oocytes per patient matured in vitro than in patients with fertility problems (1.39 ± 1.04 vs. 2.48 ± 1.83; P < 0.05). After ICSI, the proportions of fertilized oocytes and fertilized oocytes developing into an embryo did not differ between oocytes matured in vitro and in vivo in the same cycles.

Conclusions

Oocyte IVM is proving to be a reliable procedure for resolving immature oocytes after controlled ovarian stimulation in cancer patients.

DOI: https://doi.org/10.2478/raon-2021-0053 | Journal eISSN: 1581-3207 | Journal ISSN: 1318-2099
Language: English
Page range: 119 - 128
Submitted on: Aug 5, 2021
Accepted on: Nov 25, 2021
Published on: Dec 22, 2021
Published by: Association of Radiology and Oncology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 Irma Virant-Klun, Jure Bedenk, Nina Jancar, published by Association of Radiology and Oncology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.