Zoran J Pavlovic 1 2, Gabrielle E Smotrich 3, Erika P New 1 2, Samad Jahandideh 4, Kate Devine 4, Anthony N Imudia 1 2, Shayne Plosker 1 2
Affiliations Expand
- PMID: 39781068
- PMCID: PMC11705573
- DOI: 10.1016/j.xfre.2024.09.003
Abstract
Objective: To compare pregnancy outcomes after single blastocyst embryo transfer among patients whose first autologous embryo transfer was either a fresh embryo transfer or a frozen embryo transfer (FET) after a freeze-all, in the absence of preimplantation genetic testing for aneuploidy (PGT-A).
Design: A multicenter retrospective cohort analysis.
Setting: National multicenter fertility practice.
Patients: A total of 8,319 autologous first blastocyst embryo transfers in the absence of PGT-A were analyzed. Of them, 6,755 transfers were fresh embryo transfer (ET) and 1,564 transfers were FET after freeze-all.
Exposure: Patients underwent either a fresh or a frozen initial autologous, single blastocyst transfer in the absence of PGT-A.
Main outcome measures: Primary outcome measure was live birth rate. Secondary outcome measures included positive pregnancy test, clinical pregnancy rate, and miscarriage rate.
Results: Live birth rate was comparable between the fresh ET and FET groups in the absence of PGT-A, after performing generalized estimating equation modeling to account for age, body mass index, antral follicle count, basal follicle-stimulating hormone, progesterone on day of trigger/day of final lining check, peak estradiol during in vitro fertilization stimulation cycle, number of oocytes retrieved during ovarian stimulation cycle, and primary diagnosis. Similarly, the secondary outcome variables of positive pregnancy test, clinical pregnancy rate, and miscarriage rates were comparable between the cohorts. These findings were observed in the entire study group, within each age category of <35, 35-37, 38-40, and >40 and among each stratified peak estradiol group.
Conclusions: In the absence of PGT-A, patients and fertility providers can elect to pursue either fresh ET or embryo freeze-all with subsequent FET during the first autologous in vitro fertilization cycle.
Keywords: In vitro fertilization; assisted reproductive technology; fresh embryo transfer; frozen embryo transfer; non-PGT-A cycles.
© 2024 The Authors.
Conflict of interest statement
Z.J.P. has nothing to disclose. G.E.S. has nothing to disclose. E.P.N. has nothing to disclose. S.J. has nothing to disclose. K.D. has nothing to disclose. A.N.I. has nothing to disclose. S.P. has nothing to disclose.
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References
Fatemi H.M., Popovic-Todorovic B., Humaidan P., Kol S., Banker M., Devroey P., et al. Severe ovarian hyperstimulation syndrome after gonadotropin-releasing hormone (GnRH) agonist trigger and “freeze-all” approach in GnRH antagonist protocol. Fertil Steril. 2014;101:1008–1011. – PubMed
- AbdelHafez F.F., Desai N., Abou-Setta A.M., Falcone T., Goldfarb J. Slow freezing, vitrification and ultra-rapid freezing of human embryos: a systematic review and meta-analysis. Reprod Biomed Online. 2010;20:209–222. – PubMed
- Roque M., Haahr T., Geber S., Esteves S.C., Humaidan P. Fresh versus elective frozen embryo transfer in IVF/ICSI cycles: a systematic review and meta-analysis of reproductive outcomes. Hum Reprod Update. 2019;25:2–14. – PubMed
- Mizrachi Y., Horowitz E., Farhi J., Raziel A., Weissman A. Ovarian stimulation for freeze-all IVF cycles: a systematic review. Hum Reprod Update. 2020;26:118–135. – PubMed
- Bodri D., Guillén J.J., Trullenque M., Schwenn K., Esteve C., Coll O. Early ovarian hyperstimulation syndrome is completely prevented by gonadotropin releasing-hormone agonist triggering in high-risk oocyte donor cycles: a prospective, luteal-phase follow-up study. Fertil Steril. 2010;93:2418–2420. – PubMed