Risk factors associated with monozygotic twinning in offspring conceived by assisted reproductive technology

被引:3
|
作者
Chen, Na [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Li, Jingyu [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Li, Yexing [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Zhang, Yiyuan [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Li, Jiarong [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Gao, Jie [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Hu, Jingmei [1 ,2 ,3 ,4 ,5 ,6 ,7 ]
Cui, Linlin [1 ,2 ,3 ,4 ,5 ,6 ,7 ,8 ,11 ]
Chen, Zi-Jiang [1 ,2 ,3 ,4 ,5 ,6 ,7 ,9 ,10 ]
机构
[1] Shandong Univ, Cheeloo Coll Med, Ctr Reprod Med, Jinan, Shandong, Peoples R China
[2] Chinese Acad Med Sci, Res Unit Gametogenesis & Hlth ART Offspring, 2021RU001, Jinan, Shandong, Peoples R China
[3] Shandong Univ, Key Lab Reprod Endocrinol, Minist Educ, Jinan, Shandong, Peoples R China
[4] Shandong Key Lab Reprod Med, Jinan, Shandong, Peoples R China
[5] Shandong Prov Clin Res Ctr Reprod Hlth, Jinan, Shandong, Peoples R China
[6] Shandong Technol Innovat Ctr Reprod Hlth, Jinan, Shandong, Peoples R China
[7] Shandong Univ, Natl Res Ctr Assisted Reprod Technol & Reprod Gene, Jinan, Shandong, Peoples R China
[8] Shandong Univ, Hosp 2, Ctr Reprod Med, Jinan, Shandong, Peoples R China
[9] Shanghai Key Lab Assisted Reprod & Reprod Genet, Shanghai, Peoples R China
[10] Shanghai Jiao Tong Univ, Ren Ren Ji Hosp, Sch Med, Ctr Reprod Med, Shanghai, Peoples R China
[11] Shandong Univ, Cheeloo Coll Med, Ctr Reprod Med, Jingliu Rd 157, Jinan 250001, Peoples R China
关键词
ART; single embryo transfer (SET); frozen embryo transfer (FET); monozygotic (MZ) twins; blastocyst; characteristics of infertile populations; gamete or embryo manipulations; classification of blastocyst; IVF; ICSI; IN-VITRO FERTILIZATION; TWINS; CULTURE; LEAD;
D O I
10.1093/hropen/hoad035
中图分类号
R71 [妇产科学];
学科分类号
100211 ;
摘要
STUDY QUESTION What are the factors influencing the occurrence of monozygotic (MZ) twins in offspring conceived by assisted reproductive technology (ART)?SUMMARY ANSWER Parental ages, the transfer of fresh versus frozen embryos, and the grade of blastocysts are all related to MZ twinning in ART offspring.WHAT IS KNOWN ALREADY Offspring conceived by ART have significantly increased risk of MZ twins, which may be due to the characteristics of the infertile population. The objective of this study was to explore the incidence of monozygotic (MZ) twins after ART and to clarify the risk factors for MZ twinning.STUDY DESIGN, SIZE, DURATION A total of 255 monozygotic twins were enrolled in this cohort study, and then matched with singletons at a ratio of 1:4 randomly (with 1020 in the control group). All offspring were conceived by single embryo transfer.PARTICIPANTS/MATERIALS, SETTING, METHODS The collected data were divided into the following three aspects for analysis: characteristics of the infertile population, gamete or embryo manipulations, and factors related to embryo development.MAIN RESULTS AND THE ROLE OF CHANCE The incidence of MZ twins was 1.638% (255 out of 15 567 pregnancies after single embryo transfers). Compared to singleton births, a significantly lower rate of frozen embryo transfers (FET; 78.0% vs 86.1% P = 0.002) was seen amongst the MZ twins. Amongst fresh ETs, the rate of blastocyst transfers in the MZ twins group was higher compared to that in the control group (92.9% vs 75.4%, P = 0.005). We also found that certain grades of blastocysts in terms of trophectoderm (TE) development, inner cell mass + TE development and the classification of 'top-quality' embryos were associated with the incidence of MZ twinning (P = 0.025, P = 0.012, P = 0.020, respectively). Logistic regression analysis revealed that higher paternal age (odds ratio (OR) = 0.94, 95% CI = 0.89-1.00, P = 0.029) and FET (OR = 0.48, 95% CI = 0.33-0.68, P = 0.001) may be protective factors against MZ twinning. However, higher maternal age (OR = 1.07, 95% CI = 1.01-1.13, P = 0.027) and the transfer of blastocysts (OR = 4.31, 95% CI = 1.46-12.73, P = 0.008) appeared to be associated with an increased risk of MZ twinning. Amongst blastocyst transfers, a C grade TE may be protective factor against MZ twinning (B: OR = 1.90, 95% CI = 1.18-3.07, P = 0.009; A: OR = 1.58, 95% CI = 0.93-2.67, P = 0.089).LIMITATIONS, REASONS FOR CAUTION First, our definition of MZ twins was based on twins' birth after single embryo transfers (SET), rather than ultrasound examination during early pregnancy. Second, the parental characteristics of the two groups were homogenous, so it was difficult to find any associations between infertility factors and the incidence of MZ twins.WIDER IMPLICATIONS OF THE FINDINGS This multifaceted analysis of the risk factors for MZ twinning provides some information for clinical interventions in high-risk populations.STUDY FUNDING/COMPETING INTEREST(S) This study was supported by the National Key Technology Research and Developmental Program of China (2022YFC2704404), CAMS Innovation Fund for Medical Sciences (2021-I2M-5-001), Taishan Scholars Program for Young Experts of Shandong Province (tsqn201909195), the Basic Science Center Program (31988101), and the Shandong Provincial Key Research and Development Program (2020ZLYS02). All authors have no conflicts of interest to declare.TRIAL REGISTRATION NUMBER N/A.
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