ArticleFrontiers in endocrinology2026
Comparative outcomes of day 4 versus day 5 embryo transfers by fertilization method.
Article in Frontiers in endocrinology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Clinical outcomes of co-transfer of partially and fully compacted morula versus fully compacted morula alone on day 4.Frontiers in endocrinology · 2026Article
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8 authors.
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Abstract
Objective: The aim of this retrospective cohort study was to evaluate the clinical and neonatal outcomes between day 4 and day 5 embryo transfer across different fertilization methods. Methods: This retrospective cohort study was conducted between January 2018 and March 2023, enrolling a total of 1,245 fresh embryo transfer cycles, including 1,023 Results: In IVF or ICSI cycles, no significant differences were found in clinical pregnancy rate (CPR), implantation rate (IR), live birth rate (LBR), or other clinical outcomes between transfers of day 4 and day 5 embryos ( Conclusion: In IVF or ICSI cycles, day 4 embryo transfer is considered a viable option or alternative to day 5 blastocyst transfer with no difference in clinical and neonatal outcomes. In IVF cycles with single high embryo transfer, day 4 transfer is recommended due to its significantly higher pregnancy rate compared to day 5 transfer. To reducing MPRs and preterm birth rates (PBRs), day 4 single embryo transfer is recommended if embryos achieve high-quality grade (full compaction) on day 4.
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