High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study
To improve clinical outcomes of human medically assisted reproduction, the transfer of multiple embryos is frequently performed. This leads to high rates of multiple pregnancies. In this study we explored if a cohort of patients can be defined, that benefits from the transfer of two embryos while mi...
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| Language: | English |
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Bioscientifica
2025-04-01
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| Series: | Reproduction and Fertility |
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| Online Access: | https://raf.bioscientifica.com/view/journals/raf/6/2/RAF-24-0078.xml |
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| author | Jens Erik Dietrich Ingrid Cáceres Valcárcel Edison Capp Thomas Strowitzki Ariane Germeyer |
| author_facet | Jens Erik Dietrich Ingrid Cáceres Valcárcel Edison Capp Thomas Strowitzki Ariane Germeyer |
| author_sort | Jens Erik Dietrich |
| collection | DOAJ |
| description | To improve clinical outcomes of human medically assisted reproduction, the transfer of multiple embryos is frequently performed. This leads to high rates of multiple pregnancies. In this study we explored if a cohort of patients can be defined, that benefits from the transfer of two embryos while mitigating the odds of multiple pregnancies by considering female patients’ age, embryo quality and embryo cohort quality. In this retrospective cohort study, clinical pregnancy rate (CPR), live birth rate (LBR) and multiple pregnancy rate (MPR) after fresh single embryo transfers (SETs, n = 245) were compared to those after double embryo transfer (DET, n = 278). Female patient’s age, embryo quality and embryo cohort quality were used to explore clinical outcomes in subgroups. Overall, this study found that compared to SET, DET significantly increased the CPR (33.5 vs 49.6%, adjusted odds ratio (aOR): 2.233, 95% CI: 1.529–3.261, P < 0.001), LBR (24.1 vs 39.2%, aOR: 2.416, 1.605–3.636, P < 0.001) and MPR (0.0 vs 25.4%, P < 0.001). Subgroup analysis based on female age, embryo quality and further stratification based on embryo cohort score revealed that the MPR in all subgroups was high after DET and a subgroup with significantly reduced MPR after DET could not be defined. In conclusion, DETs are associated with high MPRs that cannot be avoided by considering female patients’ age, embryo quality and embryo cohort quality. SET is the most effective way to avoid a multiple pregnancy. |
| format | Article |
| id | doaj-art-31aa6592c1574afeb17bcc4cebd35e2b |
| institution | OA Journals |
| issn | 2633-8386 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Bioscientifica |
| record_format | Article |
| series | Reproduction and Fertility |
| spelling | doaj-art-31aa6592c1574afeb17bcc4cebd35e2b2025-08-20T02:26:26ZengBioscientificaReproduction and Fertility2633-83862025-04-016210.1530/RAF-24-00781High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort studyJens Erik Dietrich0Ingrid Cáceres Valcárcel1Edison Capp2Thomas Strowitzki3Ariane Germeyer4Heidelberg University Women´s Hospital, Department of Gynecologic Endocrinology and Fertility Disorders, Heidelberg, GermanyHeidelberg University Women´s Hospital, Department of Gynecologic Endocrinology and Fertility Disorders, Heidelberg, GermanyHeidelberg University Women´s Hospital, Department of Gynecologic Endocrinology and Fertility Disorders, Heidelberg, GermanyHeidelberg University Women´s Hospital, Department of Gynecologic Endocrinology and Fertility Disorders, Heidelberg, GermanyHeidelberg University Women´s Hospital, Department of Gynecologic Endocrinology and Fertility Disorders, Heidelberg, GermanyTo improve clinical outcomes of human medically assisted reproduction, the transfer of multiple embryos is frequently performed. This leads to high rates of multiple pregnancies. In this study we explored if a cohort of patients can be defined, that benefits from the transfer of two embryos while mitigating the odds of multiple pregnancies by considering female patients’ age, embryo quality and embryo cohort quality. In this retrospective cohort study, clinical pregnancy rate (CPR), live birth rate (LBR) and multiple pregnancy rate (MPR) after fresh single embryo transfers (SETs, n = 245) were compared to those after double embryo transfer (DET, n = 278). Female patient’s age, embryo quality and embryo cohort quality were used to explore clinical outcomes in subgroups. Overall, this study found that compared to SET, DET significantly increased the CPR (33.5 vs 49.6%, adjusted odds ratio (aOR): 2.233, 95% CI: 1.529–3.261, P < 0.001), LBR (24.1 vs 39.2%, aOR: 2.416, 1.605–3.636, P < 0.001) and MPR (0.0 vs 25.4%, P < 0.001). Subgroup analysis based on female age, embryo quality and further stratification based on embryo cohort score revealed that the MPR in all subgroups was high after DET and a subgroup with significantly reduced MPR after DET could not be defined. In conclusion, DETs are associated with high MPRs that cannot be avoided by considering female patients’ age, embryo quality and embryo cohort quality. SET is the most effective way to avoid a multiple pregnancy.https://raf.bioscientifica.com/view/journals/raf/6/2/RAF-24-0078.xmlembryo transfermultiple pregnancy ratelive birth ratefemale ageembryo quality |
| spellingShingle | Jens Erik Dietrich Ingrid Cáceres Valcárcel Edison Capp Thomas Strowitzki Ariane Germeyer High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study Reproduction and Fertility embryo transfer multiple pregnancy rate live birth rate female age embryo quality |
| title | High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study |
| title_full | High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study |
| title_fullStr | High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study |
| title_full_unstemmed | High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study |
| title_short | High multiple pregnancy rates after double embryo transfers in human: a retrospective cohort study |
| title_sort | high multiple pregnancy rates after double embryo transfers in human a retrospective cohort study |
| topic | embryo transfer multiple pregnancy rate live birth rate female age embryo quality |
| url | https://raf.bioscientifica.com/view/journals/raf/6/2/RAF-24-0078.xml |
| work_keys_str_mv | AT jenserikdietrich highmultiplepregnancyratesafterdoubleembryotransfersinhumanaretrospectivecohortstudy AT ingridcaceresvalcarcel highmultiplepregnancyratesafterdoubleembryotransfersinhumanaretrospectivecohortstudy AT edisoncapp highmultiplepregnancyratesafterdoubleembryotransfersinhumanaretrospectivecohortstudy AT thomasstrowitzki highmultiplepregnancyratesafterdoubleembryotransfersinhumanaretrospectivecohortstudy AT arianegermeyer highmultiplepregnancyratesafterdoubleembryotransfersinhumanaretrospectivecohortstudy |