Is in vitro maturation of oocytes retrieved ex vivo from ovarian tissue an effective fertility preservation technique in the presence of organic ovarian cysts?

OBJECTIVE(S): In vitro maturation (IVM) of oocytes retrieved ex vivo from ovarian tissue (OTO-IVM) could be an additional source of mature oocytes with the potential to optimise medical fertility preservation (FP) after oophorectomy. It is often undertaken at the same time as the ovarian tissue cryopreservation (OTC). In the presence of an organic ovarian cyst, OTO-IVM could prove to be the only technique available to permit FP since ovarian stimulation, transvaginal ovarian needle puncture or future ovarian tissue graft are contraindicated. However, the presence of an organic cyst could alter follicular growth and the number of retrievd oocytes. Our study aims to assess the efficiency of OTO-IVM in such situations. STUDY DESIGN: Retrospective, observational study involving 20 female patients with FP by OTO-IVM between May 2017 and November 2021 at the University Hospital of Toulouse. Oocytes retrieved "ex vivo" were transferred to an IVM medium with HP-hMG, LH and HSA and then vitrified after 24 to 48 h of IVM. Data analysis was performed on the total population and comparatively between patients who had or did not have an organic ovarian cyst. RESULTS: The indications included 15 oncologic and 5 non-oncologic indications. Ten had an organic ovarian cyst on the retrieved ovary. The number of retrieved oocytes was 17.4+/-12.0 in the absence of cyst vs 4.1+/-6.3 in the presence (p = 0.003). The number of vitrified mature oocytes was 5.8+/-5.3 in the absence vs 1.1+/-2.2 (median = 0) in the presence of a cyst (p = 0.03). Ninety percent of the patients with an organic cyst had less than two vitrified mature oocytes. The mean maturation rate was 34%, not significantly different between the two groups. We found a correlation between serum AMH level and the number of mature oocytes: ρ:0.47 CI95 = [0.02; 0.76]; p = 0.04. CONCLUSION(S): OTO-IVM is an additional source of mature oocytes to optimise FP after oophorectomy. However, in the presence of an organic ovarian cyst on the retrieved ovary, the exocrine, paracrine and endocrine functions of the ovary are impaired. As such, the number of immature oocytes obtained is highly impacted and appears to be insufficient to be able to propose systematically this technique in such situations.

Fertility of women with cystic fibrosis: a French survey.

RESEARCH QUESTION: Although the impact of cystic fibrosis on male fertility is well known, very few studies have investigated its effect on female fertility. This study aimed to evaluate the fertility status of women with cystic fibrosis. DESIGN: A questionnaire was sent to 220 women with cystic fibrosis. The questions concerned their desire to become a parent, achievement or not of a pregnancy, the time to become pregnant, the means of achieving pregnancy (spontaneously or with medical assistance) and the outcome of the pregnancy. Ninety-eight patients responded to the questionnaire. RESULTS: Of the 46 women who sought pregnancy, 25 (54%) had at least one live birth without treatment, while 11 (24%) required infertility treatment to obtain a live birth and 10 (22%) had no delivery. The mean time-to-pregnancy was 12 months (1-180). The reasons for preferring not to become pregnant were mainly fear of the interaction between cystic fibrosis and pregnancy and of the transmission of cystic fibrosis to children. CONCLUSIONS: Fertility seems to be slightly impaired in women with cystic fibrosis, because 37% of them failed to become pregnant without medical assistance. Because the outcome of pregnancies appears normal, patients should be informed about the possibility of becoming mothers and be made aware of the risk of unwanted pregnancies.