ArticleScientific reports2023
Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A.
Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
9 citing papers in PubMed, 1 synthesis or guideline pooled it, 16 citations in OpenAlex.
- Impact of double versus single blastocyst biopsy and vitrification on clinical and neonatal outcomes in PGT cycles: A systematic review and meta-analysis of embryo retesting.Acta obstetricia et gynecologica Scandinavica · 2026Pooled it
- Intrauterine platelet-rich plasma infusion for recurrent implantation failure: a pilot randomized controlled single-blinded clinical trial in the USA.Journal of assisted reproduction and genetics · 2026Trial
- Improved clinical outcomes with a modified warming protocol in donor oocyte cycles.Journal of ovarian research · 2025Article
- Effect of Blastocyst Morphology and Developmental Rate on Euploidy and Live Birth Rates in PGT-A Cycles: A Retrospective Cohort Study.Reproductive sciences (Thousand Oaks, Calif.) · 2025Article
- Impact of Transfer Timing on Day-6 Blastocyst Pregnancy Outcomes in HRT Cycles of 2021-2024.International journal of general medicine · 2025Article
- Effect of day 5 or 6 blastocyst embryo transfer on pregnancy outcomes in euthyroid women undergoing IVF: A single centre retrospective cohort.JBRA assisted reproduction · 2024Article
- Investigating developmental characteristics of biopsied blastocysts stratified by mitochondrial copy numbers using time-lapse monitoring.Reproductive biology and endocrinology : RB&E · 2024Article
- Reply: Double vitrification and warming do not compromise the chance of live birth-a potential invalid conclusion.Human reproduction open · 2024Article
- Developmental perturbation in human embryos: Clinical and biological significance learned from time-lapse images.Reproductive medicine and biologyReview
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Authors and funding
10 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Elective single-embryo transfers of euploid or low-level mosaic blastocysts were analyzed in this retrospective study to determine the correlations of live birth (LB) probability with embryonic developmental features of implanted day 5 (D5, n = 245) or day 6 (D6, n = 73) blastocysts using time-lapse (TL) monitoring. According to the logistic regression analyses (adjusted odds ratio [OR] = 0.341, 95% confidence interval [CI] = 0.169-0.685, P < 0.05), the LB probability was negatively associated with the D6 group. The LB rate of the D5 group was higher than the D6 group (88.2% vs. 75.3%; P < 0.05). Compared with the D5 blastocysts, the D6 blastocysts exhibited comparable dysmorphisms except for the multinucleation at the 4-cell stage (10.9% vs. 2.9%, P < 0.05). Moreover, D6 blastocysts had considerably slower developmental kinetics and poorer blastocyst morphologies. Further analysis confirmed that the LB rate was not associated with developmental kinetics or dysmorphisms but rather with blastocyst morphology (inner cell mass [ICM] grade ≤ C vs. ICM grade A, adjusted OR = 0.155, 95% CI = 0.04-0.596, P < 0.05; trophectoderm [TE] grade ≤ C vs. TE grade A, adjusted OR = 0.157, 95% CI = 0.032-0.760, P < 0.05). In conclusion, D6 implanted blastocysts have a considerably lower LB rate than D5 implanted blastocysts. As determined by TL monitoring, the diminished blastocyst morphology can be one of the primary reasons underlying the decreased likelihood of LB.
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Registered trials
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