O-038 Is a 10-year retention period sufficient after elective oocyte vitrification (EOV)?

Abstract Study question In Belgium, by law, a retention period of 10-years is standard. Is this sufficient for women to return the clinic and use their vitrified oocytes? Summary answer A standard cryopreservation seems since half returned fertility 96% used oocytes. What known already The main driver elective oocyte buy more time find suitable partner. remains whether 10 years accomplish goal finding partner procreate with or without using rates utilisation oocytes reported in literature are low. Most do not Little about women's reproductive pathways after EOV destination expired surplus design, size, duration Computerized clinical data were retrieved from pioneer cohort who underwent our centre age-related reasons than ago (between 2009 2012). Hence, legal between 2019 2022. We documented choices those we investigated intended did return. Participants/materials, setting, methods Data collected charts According Belgian unused expire when reaching age limit 48 years. evaluated eventually started treatment, assessed relational status, rate as stated informed consents. Main results role chance 117 at least ago. Women's because they either beyond (n = 82) was reached 35). Five requested transport treatment abroad. Fifty-two out (44.4%) assisted reproduction. Eventually, (50/52) them 21/50 had child ongoing pregnancy. Upon clinic, 22 single 27 found partner, two co-parent one woman female Furthermore, 7/117 but refrained treatment. Fifty-one never centre. Only five asked prolong medical reasons. others oocytes, initiate further action concerning period, stored cryopreserved according choice consent. majority donated research (60%), (31%) opted destroy cryopreservation. Limitations, caution It possible map pathway whose use. Follow-up outcomes required comprehensive appraisal EOV. Wider implications findings vast Those returning These add knowledge on EOV, essential improve counselling future EOV-candidates. Trial registration number applicable