Parameters impacting the live birth rate per transfer after frozen single euploid blastocyst transfer

Autoři: Fazilet Kubra Boynukalin aff001;  Meral Gultomruk aff002;  Sabri Cavkaytar aff001;  Emre Turgut aff001;  Necati Findikli aff002;  Munevver Serdarogullari aff002;  Onder Coban aff002;  Zalihe Yarkiner aff003;  Carmen Rubio aff004;  Mustafa Bahceci aff001
Působiště autorů: Department of Reproductive Endocrinology and IVF Center, Bahceci Health Group, Istanbul, Turkey aff001;  Department of Embryology and R&D Center, Bahceci Health Group, Center, Istanbul, Turkey aff002;  Cyprus Science University, Kyrenia, Cyprus aff003;  Igenomix, Valencia, Spain aff004
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
doi: 10.1371/journal.pone.0227619



To assess the predictive value of patient characteristics, controlled ovarian stimulation and embryological parameters on the live birth outcome of single euploid frozen-warmed blastocyst transfer (FBT).


This was a retrospective cohort study including 707 single FBTs after preimplantation genetic testing for aneuploidy (PGT-A) that were performed from October 1, 2015, to January 1, 2018. The effects of patient-, cycle- and embryology-related parameters on the live birth outcome after FBT were assessed.


In the subgroup analysis based on live birth, patients who achieved a live birth had a significantly lower body mass index (BMI) than patients who did not achieve a live birth (22.7 (21.5–24.6) kg/m2 vs 27 (24–29.2) kg/m2, p<0.001). The percentage of blastocysts with inner cell mass (ICM) A or B was significantly higher among patients achieving a live birth, at 91.6% vs. 82.6% (p<0.001). Day-5 biopsies were also more prevalent among patients achieving a live birth, at 82.9% vs 68.1% (p<0.001). On the other hand, the mitochondrial DNA (mtDNA) levels were significantly lower among cases with a successful live birth, at 18.7 (15.45–23.68) vs 20.55 (16.43–25.22) (p = 0.001). The logistic regression analysis showed that BMI (p<0.001, OR: 0.789, 95% CI [0.734–0.848]), day of trophectoderm (TE) biopsy (p<0.001, OR: 0.336, 95% CI [0.189–0.598]) and number of previous miscarriages (p = 0.004, OR: 0.733, 95% CI [0.594–0.906]) were significantly correlated with live birth. Patients with elevated BMIs, cycles in which embryos were biopsied on day-6 and a higher number of miscarriages were at increased risks of reduced live birth rates.


A high BMI, an embryo biopsy on day-6 and a high number of miscarriages negatively affect the live birth rate after single euploid FBT.

Klíčová slova:

Biopsy – Birth rates – Blastocysts – Embryos – Miscarriage – Oocytes – Pregnancy – Aneuploidy


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