Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A

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 t...

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Main Authors: Chien-Hong Chen, Chun-I Lee, Chun-Chia Huang, Hsiu-Hui Chen, Chih-Ying Chang, En-Hui Cheng, Pin-Yao Lin, Chung-I Chen, Tsung-Hsien Lee, Maw-Sheng Lee
Format: Article
Language:English
Published: Nature Portfolio 2023-08-01
Series:Scientific Reports
Online Access:https://doi.org/10.1038/s41598-023-40052-5
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author Chien-Hong Chen
Chun-I Lee
Chun-Chia Huang
Hsiu-Hui Chen
Chih-Ying Chang
En-Hui Cheng
Pin-Yao Lin
Chung-I Chen
Tsung-Hsien Lee
Maw-Sheng Lee
author_facet Chien-Hong Chen
Chun-I Lee
Chun-Chia Huang
Hsiu-Hui Chen
Chih-Ying Chang
En-Hui Cheng
Pin-Yao Lin
Chung-I Chen
Tsung-Hsien Lee
Maw-Sheng Lee
author_sort Chien-Hong Chen
collection DOAJ
description 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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spelling doaj.art-13d2ec45d2814fe38ab737d3d94316fb2023-11-26T13:16:08ZengNature PortfolioScientific Reports2045-23222023-08-0113111110.1038/s41598-023-40052-5Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-AChien-Hong Chen0Chun-I Lee1Chun-Chia Huang2Hsiu-Hui Chen3Chih-Ying Chang4En-Hui Cheng5Pin-Yao Lin6Chung-I Chen7Tsung-Hsien Lee8Maw-Sheng Lee9Division of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalDivision of Infertility, Lee Women’s HospitalAbstract 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.https://doi.org/10.1038/s41598-023-40052-5
spellingShingle Chien-Hong Chen
Chun-I Lee
Chun-Chia Huang
Hsiu-Hui Chen
Chih-Ying Chang
En-Hui Cheng
Pin-Yao Lin
Chung-I Chen
Tsung-Hsien Lee
Maw-Sheng Lee
Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A
Scientific Reports
title Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A
title_full Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A
title_fullStr Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A
title_full_unstemmed Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A
title_short Increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with PGT-A
title_sort increased incidence of live births in implanted day 5 versus day 6 blastocysts following single embryo transfers with pgt a
url https://doi.org/10.1038/s41598-023-40052-5
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