ArticleAnnals of translational medicine2019
Timing of frozen-thawed embryo transfer after controlled ovarian stimulation in a non-elective freeze-all policy.
Article in Annals of translational medicine, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.
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Who cites it
22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 40 citations in OpenAlex.
- The optimal timing of frozen-thawed embryo transfer: delayed or not delayed? A systematic review and meta-analysis.Frontiers in medicine · 2023Pooled it
- Delayed versus immediate frozen embryo transfer after oocyte retrieval: a systematic review and meta-analysis.Journal of assisted reproduction and genetics · 2020 · on this mapPooled it
- Immediate versus delayed frozen embryo transfer in women following a failed IVF-ET attempt: a multicenter randomized controlled trial.Reproductive biology and endocrinology : RB&E · 2021 · on this mapTrial
- Effect of laser-assisted hatching on ectopic pregnancy after frozen-thawed embryo transfer in patients with a history of ectopic pregnancy: a large cohort study.Journal of ovarian research · 2026Article
- Impact of interval after fresh cycle cancellation on first frozen embryo transfer outcomes.Frontiers in endocrinology · 2026Article
- Laser-assisted hatching is associated with reduced re-expansion of vitrified-thawed blastocysts and has no significant effect on embryo implantation.Journal of ovarian research · 2025Article
- Article
- The HERA (Hyper-response Risk Assessment) Delphi consensus for the management of hyper-responders in in vitro fertilization.Journal of assisted reproduction and genetics · 2023Article
- Association between serum progesterone levels on the day of frozen-thawed embryo transfer and pregnancy outcomes after artificial endometrial preparation.BMC pregnancy and childbirth · 2023Article
- Association of infertility cause with perinatal outcomes in a freeze-all policy: an analysis including 10,151 singleton newborns.AJOG global reports · 2023Article
- Finding of the optimal preparation and timing of endometrium in frozen-thawed embryo transfer: a literature review of clinical evidence.Frontiers in endocrinology · 2023Review
- Cumulative live birth rates for low-prognosis women over 5 years or 9 frozen-thawed embryo transfer cycles.BMC pregnancy and childbirth · 2022Article
- It is not worth postponing frozen embryo transfers after oocyte pickup: A retrospective cohort study based on propensity score matching.Frontiers in endocrinology · 2022Article
- Effect of interval between oocyte retrieval and resuscitation embryo transfer on pregnancy outcomes.Frontiers in medicine · 2022Article
- Effects of immediate versus delayed frozen embryo transfer in high responder patients undergoing freeze-all cycles.BMC pregnancy and childbirth · 2021 · on this mapArticle
- Meta-analysis of the embryo freezing transfer interval.Reproductive medicine and biology · 2021Review
- Whether immediate frozen-thawed embryo transfer improves IVF outcome in non-elective freeze all policy.Annals of translational medicine · 2020Article
- Elective frozen embryo transfer (freeze-all): there seems to be no harm to transfer in the next immediate menstrual cycle.Annals of translational medicine · 2020Article
- To delay or not frozen embryo transfer in freeze-all cycles?Annals of translational medicine · 2020Article
- DNA methylation status of imprintedAnnals of translational medicine · 2020Article
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Authors and funding
6 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundNon-elective freeze-all policy has been increasingly utilized in assisted reproductive treatment, but the optimal timing of frozen-thawed embryo transfer (FET) after controlled ovarian stimulation (COS) remains to be investigated.
methodsThis retrospective cohort study included 2,998 patients who underwent their first FETs after the first COS cycles using the non-elective freeze-all strategy from Jan 2013 to Dec 2016 at a tertiary-care academic medical center. Patients were divided into the "immediate" group in which FET took place within the first menstrual cycle after oocyte retrieval, and the "delayed" group where FET started after one or more menstrual cycles following COS.
resultsThe mean interval between oocyte retrieval and FET was 33.3±5.8 days in the immediate group (n=280; 9.3%) and 91.3±19.4 days in the delayed group (n=2,718; 90.7%). Cycles with delayed FET had a significantly lower live birth rate than those with immediate FET before [1,246/2,718 (45.8%)
conclusionsPerforming FET immediately within the first menstrual cycle following COS was associated with a higher chance to achieve live birth compared with delaying FET to subsequent cycles in a non-elective freeze-all policy. However, further randomized controlled trials are still needed to confirm this conclusion.
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