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Wang XJ, Chen MX, Ruan LL, Tan L, Geng LH, Yang HJ, Fu LJ, Zhong ZH, Lv XY, Ding YB, Wan Q. Study on the optimal time limit of frozen embryo transfer and the effect of a long-term frozen embryo on pregnancy outcome. Medicine (Baltimore) 2024; 103:e37542. [PMID: 38552082 PMCID: PMC10977551 DOI: 10.1097/md.0000000000037542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 02/19/2024] [Indexed: 04/02/2024] Open
Abstract
In this retrospective study conducted at Sichuan Jinxin Xinan Women and Children's Hospital spanning January 2015 to December 2021, our objective was to investigate the impact of embryo cryopreservation duration on outcomes in frozen embryo transfer. Participants, totaling 47,006 cycles, were classified into 3 groups based on cryopreservation duration: ≤1 year (Group 1), 1 to 6 years (Group 2), and ≥6 years (Group 3). Employing various statistical analyses, including 1-way ANOVA, Kruskal-Wallis test, chi-square test, and a generalized estimating equation model, we rigorously adjusted for confounding factors. Primary outcomes encompassed clinical pregnancy rate and Live Birth Rate (LBR), while secondary outcomes included biochemical pregnancy rate, multiple pregnancy rate, ectopic pregnancy rate, early and late miscarriage rates, preterm birth rate, neonatal birth weight, weeks at birth, and newborn sex. Patient distribution across cryopreservation duration groups was as follows: Group 1 (40,461 cycles), Group 2 (6337 cycles), and Group 3 (208 cycles). Postcontrolling for confounding factors, Group 1 exhibited a decreased likelihood of achieving biochemical pregnancy rate, clinical pregnancy rate, and LBR (OR < 1, aOR < 1, P < .05). Furthermore, an elevated incidence of ectopic pregnancy was observed (OR > 1, aOR > 1), notably significant after 6 years of freezing time [aOR = 4.141, 95% confidence intervals (1.013-16.921), P = .05]. Cryopreservation exceeding 1 year was associated with an increased risk of early miscarriage and preterm birth (OR > 1, aOR > 1). No statistically significant differences were observed in birth weight or sex between groups. However, male infant birth rates were consistently higher than those of female infants across all groups. In conclusion, favorable pregnancy outcomes align with embryo cryopreservation durations within 1 year, while freezing for more than 1 year may diminish clinical pregnancy and LBRs, concurrently elevating the risk of ectopic pregnancy and preterm birth.
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Affiliation(s)
- Xue-Jiao Wang
- Sichuan Jinxin Xinan Women and Children’s Hospital, Chengdu, China
| | - Ming-Xing Chen
- Department of Obstetrics and Gynecology, Women and Children’s Hospital of Chongqing Medical University, Chongqing, China
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Ling-Ling Ruan
- Department of Obstetrics and Gynecology, Women and Children’s Hospital of Chongqing Medical University, Chongqing, China
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Li Tan
- Sichuan Jinxin Xinan Women and Children’s Hospital, Chengdu, China
| | - Li-Hong Geng
- Sichuan Jinxin Xinan Women and Children’s Hospital, Chengdu, China
| | - Hui-Jun Yang
- Assisted Reproductive Center, Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan, China
| | - Li-Juan Fu
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
- Department of Pharmacology, Academician Workstation, Changsha Medical University, Changsha, China
| | - Zhao-Hui Zhong
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Xing-Yu Lv
- Sichuan Jinxin Xinan Women and Children’s Hospital, Chengdu, China
| | - Yu-Bin Ding
- Department of Obstetrics and Gynecology, Women and Children’s Hospital of Chongqing Medical University, Chongqing, China
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Qi Wan
- Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, China
- Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, China
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Pilegaard SP, Schmidt L, Stormlund S, Koert E, Bogstad JW, Prætorius L, Nielsen HS, la Cour Freiesleben N, Sopa N, Klajnbard A, Humaidan P, Bergh C, Englund ALM, Løssl K, Pinborg A. Psychosocial wellbeing shortly after allocation to a freeze-all strategy compared with a fresh transfer strategy in women and men: a sub-study of a randomized controlled trial. Hum Reprod 2023; 38:2175-2186. [PMID: 37742131 DOI: 10.1093/humrep/dead188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 08/30/2023] [Indexed: 09/25/2023] Open
Abstract
STUDY QUESTION Is the psychosocial wellbeing affected in women and men shortly after allocation to a freeze-all strategy with postponement of embryo transfer compared to a fresh transfer strategy? SUMMARY ANSWER In general, psychosocial wellbeing (i.e. emotional reactions to the treatment, quality-of-life, infertility-related stress, and marital benefit) was similar in women and men allocated to a freeze-all versus those allocated to a fresh-transfer strategy 6 days after disclosure of treatment strategy (i.e. 4 days after oocyte retrieval), although women in the freeze-all group reported a slightly higher degree of depressive symptoms and mood swings compared to women in the fresh transfer group. WHAT IS KNOWN ALREADY The use of a freeze-all strategy, i.e. freezing of the entire embryo cohort followed by elective frozen embryo transfer in subsequent cycles has increased steadily over the past decade in assisted reproductive technology (ART). This strategy essentially eliminates the risk of ovarian hyperstimulation syndrome and has proven beneficial regarding some reproductive outcomes in subgroups of women. However, patients experience a longer time interval between oocyte retrieval and embryo transfer, hence a longer time to pregnancy, possibly adding additional stress to the ART treatment. So far, little focus has been on the possible psychosocial strains caused by postponement of embryo transfer. STUDY DESIGN, SIZE, DURATION This is a self-reported questionnaire based sub-study of a multicentre randomized controlled trial (RCT) including 460 women and 396 male partners initiating their first, second, or third treatment cycle of invitro fertilisation or intracytoplasmic sperm injection (ICSI) from May 2016 to September 2018. This sub-study was included in the primary project protocol and project plan for the RCT, as psychosocial wellbeing was considered a secondary outcome. PARTICIPANTS/MATERIALS, SETTING, METHODS Women from eight public fertility clinics in Denmark and Sweden and one private clinic in Spain were randomized in a 1:1 ratio on the day of inclusion (menstrual cycle day 2 or 3) to either a freeze-all strategy with postponement of embryo transfer to a subsequent modified natural menstrual cycle or a fresh transfer strategy with embryo transfer in the hormone stimulated cycle. Treatment allocation was blinded until the day of the ovulation trigger. Women and their male partners were asked to complete a validated self-reported questionnaire 6 days after unblinding of treatment group allocation, corresponding to 4 days after oocyte retrieval, investigating their psychosocial wellbeing related to the treatment defined as emotional reactions to the treatment, quality-of-life, infertility-related stress, and marital benefit. The questionnaire included items from the Copenhagen Multi-Centre Psychosocial Infertility (COMPI) Fertility Problem Stress Scales and the COMPI Marital Benefit Measure. MAIN RESULTS AND THE ROLE OF CHANCE Baseline characteristics were comparable between the two groups for both women and men. In total, response rates were 90.7% for women and 90.2% for men. In the freeze-all group, 207 women and 179 men completed the questionnaire compared with 204 women and 178 men in the fresh transfer group. Men in the two treatment groups did not differ in any of the explored aspects of psychosocial wellbeing (i.e. emotional reactions to the treatment, quality-of-life, infertility-related stress, and marital benefit) 6 days after disclosure of treatment strategy. Women in the freeze-all group reported a slightly higher degree of depressive symptoms (P = 0.045) and mood swings (P = 0.001) (i.e. variables included in 'emotional reactions to treatment') compared to women in the fresh transfer group. When adjusted for multiple testing, depressive symptoms were no longer significantly different between the two groups. No additional differences in psychosocial wellbeing were found. Self-reported quality-of-life during treatment was also rated as similar between the two groups in both women and men, but was slightly lower than they would rate their quality-of-life when not in fertility treatment. LIMITATIONS, REASONS FOR CAUTION Although response rates were high, selection bias cannot be excluded. As this study was an RCT, we assume that psychosocial characteristics of the participants were equally distributed in the two groups, thus it is unlikely that the identified psychosocial differences between the freeze-all and fresh transfer group were present already at baseline. Furthermore, the questionnaire was completed as a one-time assessment 4 days after oocyte retrieval, thus not reflecting the whole treatment process, whereas an assessment after the full completed treatment cycle is needed to draw firm conclusions about the psychosocial consequences of the whole waiting period. However, a question posted that late would be highly biased on whether or not a pregnancy had been achieved. WIDER IMPLICATIONS OF THE FINDINGS The results indicate that individuals in the freeze-all group exhibited slightly higher levels of depressive symptoms and mood swings compared to those in the fresh transfer group. Nevertheless, it is important to note that any worries related to potential emotional strains stemming from delaying embryo transfer should not overshadow the adoption of a freeze-all approach in cases where it is clinically recommended. As long as patients are provided with comprehensive information about the treatment strategy before initiating the process, it is worth emphasising that other aspects of psychosocial wellbeing were comparable between the two groups. STUDY FUNDING/COMPETING INTEREST(S) The study is part of the Reprounion collaborative study, co-financed by the European Union, Interreg V Öresund-Kattegat-Skagerrak. L.P. reports financial support from Merck A/S. H.S.N. reports grants from Freya Biosciences ApS, Ferring Pharmaceuticals, BioInnovation Institute, Ministry of Education, Novo Nordic Foundation, Augustinus Fonden, Oda og Hans Svenningsens Fond, Demant Fonden, Ole Kirks Fond and Independent Research Fund Denmark and personal fees from Ferring Pharmaceuticals, Merck A/S, Astra Zeneca, Cook Medical, IBSA Nordic and Gedeon Richter. H.S.N is founder and chairman of the Maternity Foundation and co-developed the Safe Delivery App (non-profit). N.C.F. reports grants from Gedeon Richter, Merck A/S, Cryos International and financial support from Ferring Pharmaceuticals, Merck A/S and Gedeon Richter. N.C.F. is chairman in the steering committee for the guideline groups for The Danish Fertility Society (non-profit). P.H. reports honoraria from Merch A/S, IBSA Nordic and Gedeon Richter. A.L.M.E. reports grants and financial support from Merck A/S and Gedeon Richter. A.P. reports grants from Gedeon Richter, Ferring Pharmaceuticals, Merck A/S and personal fees from Preglem S.A., Novo Nordic Foundation, Ferring Pharmaceuticals, Gedeon Richter, Cryos International, Merch A/S, Theramex and Organon and the lend of embryoscope to the institution from Gedeon Richter. All other authors declare no conflict of interest. TRIAL REGISTRATION NUMBER Clinicaltrials.gov NCT02746562.
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Affiliation(s)
- Sara Pind Pilegaard
- The Fertility Department, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lone Schmidt
- Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Sacha Stormlund
- The Fertility Department, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Copenhagen University Hospital, Hvidovre, Denmark
| | - Emily Koert
- Department of Public Health, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jeanette Wulff Bogstad
- The Fertility Department, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Lisbeth Prætorius
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Copenhagen University Hospital, Hvidovre, Denmark
| | - Henriette Svarre Nielsen
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Copenhagen University Hospital, Hvidovre, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nina la Cour Freiesleben
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Copenhagen University Hospital, Hvidovre, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Negjyp Sopa
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Copenhagen University Hospital, Hvidovre, Denmark
| | - Anna Klajnbard
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Copenhagen University Hospital, Herlev, Denmark
| | - Peter Humaidan
- The Fertility Department, Skive Regional Hospital and Faculty of Health, Aarhus University, Aarhus, Denmark
| | - Christina Bergh
- Department of Obstetrics and Gynaecology, Institute of Clinical Sciences, Sahlgrenska Academy, Gothenburg University, Reproductive Medicine, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - Anne Lis Mikkelsen Englund
- The Fertility Clinic, Department of Obstetrics and Gynaecology, Zealand University Hospital, Køge, Denmark
| | - Kristine Løssl
- The Fertility Department, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Anja Pinborg
- The Fertility Department, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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Matorras R, Pijoan JI, Laínz L, Díaz-Nuñez M, Sainz H, Pérez-Fernandez S, Moreira D. Polycystic ovarian syndrome and miscarriage in IVF: systematic revision of the literature and meta-analysis. Arch Gynecol Obstet 2023; 308:363-377. [PMID: 36058943 DOI: 10.1007/s00404-022-06757-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 08/16/2022] [Indexed: 11/02/2022]
Abstract
PURPOSE To evaluate the risk of miscarriage in IVF cycles in women with PCOS. METHODS Systematic review and meta-analysis. Systematic search of MEDLINE, EMBASE and Google Scholar. The language search was restricted to English, Spanish and French, from 2000 to 2019, with crosschecking of references from relevant articles. Inclusion criteria were: (1) IVF cycles (2) a group of patients with PCOS was considered separately, (3) the miscarriage rate was reported, (4) there was a control group, (5) definition of PCOS according the Rotterdam criteria. Exclusion criteria were been excluded from the meta-analysis: (1) publication prior to the year 2000, (2) animal studies, (3) reviews, (4) abstracts or conference papers, (5) letters, (6) case reports, (7) studies comparing different IVF techniques, (8) studies comparing groups with and without metformin or other treatments, (9) studies on induced abortions. Risk of bias was assessed by the Newcastle-Ottawa score (NOS). All the included studies had a low risk of bias (NOS scores ranging 7-8). The review protocol was registered in PROSPERO (CRD42020186713). Seventeen studies were included in the meta-analysis. There was a total of 10,472 pregnancies (2650 in PCOS and 7822 in controls) of which 1885 were miscarriages (682 in PCOS and 1203 in controls). We considered the miscarriage rate (MR), preclinical MR, early MR, and late MR. RESULTS In IVF pregnancies the risk of miscarriage was significantly increased when considering miscarriages in total (RR = 1.59; CI = 1.45-1.75), preclinical miscarriages (RR = 1.59; CI = 1.35-1.88), and early miscarriages (RR = 1.44; CI = 1.16-1.79). The increased miscarriage rate persisted in Chinese and Western populations when considered separately. The risk of miscarriage was increased in the subgroup of fresh transfers (RR = 1.21; CI = 1.06-1.39) as well as in the subgroup including either fresh or frozen transfers (RR = 1.95; CI = 1.72-2.22). CONCLUSION PCOS is linked to an increased MR in IVF pregnancies both of miscarriages in total, and to an increase in preclinical and early miscarriages. PROSPERO NUMBER CRD42020186713.
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Affiliation(s)
- Roberto Matorras
- Human Reproduction Unit, Hospital de Cruces, Biocruces, Baracaldo, Vizcaya, Spain.
- IVIRMA. IVI Bilbao, Bizkaia, Spain.
| | - Jose Ignacio Pijoan
- Clinical Epidemiology Unit, Cruces University Hospital, Biocruces, Baracaldo, Vizcaya, Spain
| | - Lucía Laínz
- Human Reproduction Unit, Hospital de Cruces, Biocruces, Baracaldo, Vizcaya, Spain
| | - María Díaz-Nuñez
- Human Reproduction Unit, Hospital de Cruces, Biocruces, Baracaldo, Vizcaya, Spain
| | - Héctor Sainz
- Human Reproduction Unit, Hospital de Cruces, Biocruces, Baracaldo, Vizcaya, Spain
| | - Silvia Pérez-Fernandez
- Clinical Epidemiology Unit, Cruces University Hospital, Biocruces, Baracaldo, Vizcaya, Spain
| | - Dayana Moreira
- Human Reproduction Unit, Hospital de Cruces, Biocruces, Baracaldo, Vizcaya, Spain
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4
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Matorras R, Vendrell A, Ferrando M, Larreategui Z. Early Spontaneous Twinning Recorded By Time-Lapse. Twin Res Hum Genet 2023; 26:215-218. [PMID: 37655615 DOI: 10.1017/thg.2023.24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Monozygotic twins (MZT) are 2.5 times more frequent in ART than in natural conceptions. A number of ART-related mechanisms have been probably linked with MZT. Studies that retrospectively analyze the time-lapse (TL) records resulting in MZT suggest that some morphokinetic traits of the inner cell mass and the trophectoderm could be predictors of MZT, but results are controversial. We present the complete TL record of one case of MZT that split itself at the very moment of the division into two cells, with one of the cells coming out through a hole in the zona pellucida (ZP). Both resulting embryos developed normally, and were vitrified. It is suggested that the hole in the ZP may facilitate the extrusion of some cells of the
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Affiliation(s)
- Roberto Matorras
- IVI Bilbao, Lejona, Spain
- Obstetrics and Gynecology Department, Department of Medical-Surgical Specialties, Cruces University Hospital, Basque Country University, Baracaldo, Spain
- Biocruces Bizkaia Health Research Institute, Baracaldo, Spain
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Wan Q, Chen MX, Wang X, Tan L, Yu HJ, Lv XY, Zhong ZH, Tang XJ, Ding YB, Xia M, Li Y. Effect of interval between oocyte retrieval and resuscitation embryo transfer on pregnancy outcomes. Front Med (Lausanne) 2023; 9:1081782. [PMID: 36687418 PMCID: PMC9846106 DOI: 10.3389/fmed.2022.1081782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023] Open
Abstract
Objectives Resuscitation transfer of embryos after elective cryopreservation has been widely applied in in vitro fertilization-embryo transfer (IVF-ET) therapy for human infertility or sterility owing to higher embryo implantation rates. This method separates oocyte retrieval from embryo transfer. The optimal time for frozen embryo transfer (FET) remains unknown. Therefore, this study mainly compares the advantages and disadvantages of delayed FET and immediate FET through retrospective analysis. Methods We analyzed real world data of patients who underwent resuscitation transplantation between October 2019 and July 2021 at the Reproductive Center of Chengdu Jinjiang Hospital for Women's and Children's Health. Propensity score matching was applied to control potential confounding factors. A total of 5,549 patients who received at least one FET were analyzed. Patients undergoing transplantation within 60 days of oocyte retrieval were included in the immediate FET group (n = 1,265) and those undergoing transplantation > 60 days after retrieval were included in the delayed FET group (n = 4,284). Results Live birth rates between the two groups were comparable (45.25% vs. 45.76%, p = 0.757). Moreover, no difference was observed in the rates of biochemical pregnancy (64.50% vs. 66.80%), clinical pregnancy (55.24% vs. 56.83%), ectopic pregnancy (1.47% vs. 1.39%), early miscarriage (14.41% vs. 16.20%), late miscarriage (2.21% vs. 2.09%), singleton premature delivery (16.67% vs. 18.29%), and neonatal deformity (1.97% vs. 1.80%). After stratifying the patients based on the type of embryo transferred, number of embryos transferred, FET protocol, and good prognosis criteria, live birth rates remained comparable between the two groups (p > 0.05). Conclusion Pregnancy outcomes were comparable between the immediate and delayed FET groups.
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Affiliation(s)
- Qi Wan
- The Reproductive Center, Chengdu Jinjiang Hospital for Women’s and Children’s Health, Chengdu, Sichuan, China,Department of Obstetrics and Gynecology, West China Second Hospital, Sichuan University, Chengdu, China,Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education, Sichuan University, Chengdu, China
| | - Ming-Xing Chen
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Xuejiao Wang
- The Reproductive Center, Chengdu Jinjiang Hospital for Women’s and Children’s Health, Chengdu, Sichuan, China
| | - Li Tan
- The Reproductive Center, Chengdu Jinjiang Hospital for Women’s and Children’s Health, Chengdu, Sichuan, China
| | - Hui-Jun Yu
- The Reproductive Center, Chengdu Jinjiang Hospital for Women’s and Children’s Health, Chengdu, Sichuan, China
| | - Xing-Yu Lv
- The Reproductive Center, Chengdu Jinjiang Hospital for Women’s and Children’s Health, Chengdu, Sichuan, China
| | - Zhao-Hui Zhong
- Department of Epidemiology, School of Public Health, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Xiao-Jun Tang
- Department of Epidemiology, School of Public Health, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, China
| | - Yu-Bin Ding
- Joint International Research Laboratory of Reproduction and Development of the Ministry of Education of China, School of Public Health, Chongqing Medical University, Chongqing, China
| | - Min Xia
- Department of Gynecology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, China,*Correspondence: Min Xia,
| | - Yuan Li
- The Reproductive Center, Chengdu Jinjiang Hospital for Women’s and Children’s Health, Chengdu, Sichuan, China,Yuan Li,
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Hu KL, Hunt S, Zhang D, Li R, Mol BW. The association between embryo storage time and treatment success in women undergoing freeze-all embryo transfer. Fertil Steril 2022; 118:513-521. [PMID: 35934542 DOI: 10.1016/j.fertnstert.2022.06.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Revised: 05/11/2022] [Accepted: 06/03/2022] [Indexed: 01/13/2023]
Abstract
OBJECTIVE To investigate the relationship between the embryo frozen time and live birth rate (LBR) in women having a freeze-all cycle. DESIGN Retrospective cohort study. SETTING Academic hospital. PATIENT(S) Women who underwent their first vitrified-warmed cycles from January 2013 to December 2019. INTERVENTION(S) Embryo storage time. MAIN OUTCOME MEASURE(S) The primary outcome was the LBR. RESULT(S) A total of 14,928 women were eligible for the analysis. Women with the frozen time of transferred embryos for 2-5 months were associated with a higher LBR compared with other groups. The results were confirmed by an inverted U curve in the restricted cubic splines before as well as after adjustment for covariables, which suggested that an embryo storage time of 3-4 months was associated with the highest LBR. Subgroup analyses demonstrated that the inverted U curve relationship between embryo storage time and LBR was only observed in women with the high response. Sensitivity analyses in women with at least one good-quality embryo for transfer, in women aged <36 years at embryo transfer, or in women with double cleavage embryo transfer showed that the association remained valid. The association was weakened in women with single blastocyst transfer probably because of the small sample size in these women. CONCLUSION(S) An inverted U-shaped relationship was found between embryo storage time and treatment success in women with high ovarian response in freeze-all embryo transfer cycles. Prolonged storage time of >6 months was associated with reduced pregnancy rates.
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Affiliation(s)
- Kai-Lun Hu
- Center for Reproductive Medicine, Peking University Third Hospital, Haidian District, Beijing, the People's Republic of China; Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, the People's Republic of China
| | - Sarah Hunt
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
| | - Dan Zhang
- Key Laboratory of Reproductive Genetics (Ministry of Education) and Department of Reproductive Endocrinology, Women's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, the People's Republic of China
| | - Rong Li
- Center for Reproductive Medicine, Peking University Third Hospital, Haidian District, Beijing, the People's Republic of China.
| | - Ben W Mol
- Department of Obstetrics and Gynaecology, Monash University, Clayton, Victoria, Australia
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Ibañez-Perez J, Díaz-Nuñez M, Clos-García M, Lainz L, Iglesias M, Díez-Zapirain M, Rabanal A, Bárcena L, González M, Lozano JJ, Marigorta UM, González E, Royo F, Aransay AM, Subiran N, Matorras R, Falcón-Pérez JM. microRNA-based signatures obtained from endometrial fluid identify implantative endometrium. Hum Reprod 2022; 37:2375-2391. [PMID: 36029522 PMCID: PMC9527456 DOI: 10.1093/humrep/deac184] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 08/02/2022] [Indexed: 12/12/2022] Open
Abstract
STUDY QUESTION Is it possible to use free and extracellular vesicle-associated microRNAs (miRNAs) from human endometrial fluid (EF) samples as non-invasive biomarkers for implantative endometrium? SUMMARY ANSWER The free and extracellular vesicle-associated miRNAs can be used to detect implantative endometrium in a non-invasive manner. WHAT IS KNOWN ALREADY miRNAs and extracellular vesicles (EVs) from EF have been described as mediators of the embryo–endometrium crosstalk. Therefore, the analysis of miRNA from this fluid could become a non-invasive technique for recognizing implantative endometrium. This analysis could potentially help improve the implantation rates in ART. STUDY DESIGN, SIZE, DURATION In this prospective study, we first optimized different protocols for EVs and miRNA analyses using the EF of a setup cohort (n = 72). Then, we examined differentially expressed miRNAs in the EF of women with successful embryo implantation (discovery cohort n = 15/validation cohort n = 30) in comparison with those for whom the implantation had failed (discovery cohort n = 15/validation cohort n = 30). Successful embryo implantation was considered when pregnancy was confirmed by vaginal ultrasound showing a gestational sac 4 weeks after embryo transfer (ET). PARTICIPANTS/MATERIALS, SETTING, METHODS The EF of the setup cohort was obtained before starting fertility treatment during the natural cycle, 16–21 days after the beginning of menstruation. For the discovery and validation cohorts, the EF was collected from women undergoing frozen ET on Day 5, and the samples were collected immediately before ET. In this study, we compared five different methods; two of them based on direct extraction of RNA and the other three with an EV enrichment step before the RNA extraction. Small RNA sequencing was performed to determine the most efficient method and find a predictive model differentiating between implantative and non-implantative endometrium. The models were confirmed using quantitative PCR in two sets of samples (discovery and validation cohorts) with different implantation outcomes. MAIN RESULTS AND THE ROLE OF CHANCE The protocols using EV enrichment detected more miRNAs than the methods based on direct RNA extraction. The two most efficient protocols (using polymer-based precipitation (PBP): PBP-M and PBP-N) were used to obtain two predictive models (based on three miRNAs) allowing us to distinguish between an implantative and non-implantative endometrium. The first Model 1 (PBP-M) (discovery: AUC = 0.93; P-value = 0.003; validation: AUC = 0.69; P-value = 0.019) used hsa-miR-200b-3p, hsa-miR-24-3p and hsa-miR-148b-3p. Model 2 (PBP-N) (discovery: AUC = 0.92; P-value = 0.0002; validation: AUC = 0.78; P-value = 0.0002) used hsa-miR-200b-3p, hsa-miR-24-3p and hsa-miR-99b-5p. Functional analysis of these miRNAs showed strong association with key implantation processes such as in utero embryonic development or transforming growth factor-beta signaling. LARGE SCALE DATA The FASTQ data are available in the GEO database (access number GSE178917). LIMITATIONS, REASONS FOR CAUTION One important factor to consider is the inherent variability among the women involved in the trial and among the transferred embryos. The embryos were pre-selected based on morphology, but neither genetic nor molecular studies were conducted, which would have improved the accuracy of our tests. In addition, a limitation in miRNA library construction is the low amount of input RNA. WIDER IMPLICATIONS OF THE FINDINGS We describe new non-invasive protocols to analyze miRNAs from small volumes of EF. These protocols could be implemented in clinical practice to assess the status of the endometrium before attempting ET. Such evaluation could help to avoid the loss of embryos transferred to a non-implantative endometrium. STUDY FUNDING/COMPETING INTEREST(S) J.I.-P. was supported by a predoctoral grant from the Basque Government (PRE_2017_0204). This study was partially funded by the Grant for Fertility Innovation (GFI, 2011) from Merck (Darmstadt, Germany). It was also supported by the Spanish Ministry of Economy and Competitiveness MINECO within the National Plan RTI2018-094969-B-I00, the European Union's Horizon 2020 research and innovation program (860303), the Severo Ochoa Centre of Excellence Innovative Research Grant (SEV-2016-0644) and the Instituto de Salud Carlos III (PI20/01131). The funding entities did not play any role in the study design, collection, analysis and interpretation of data, writing of the report or the decision to submit the article for publication. The authors declare no competing interests.
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Affiliation(s)
- Jone Ibañez-Perez
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain.,Department of Obstetrics and Gynecology, University of the Basque Country (UPV/EHU), Leioa, Spain.,Exosomes Laboratory, CIC bioGUNE-BRTA, Derio, Spain
| | - María Díaz-Nuñez
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Marc Clos-García
- Novo Nordisk Foundation Center for Basic Metabolic Research (CBMR), Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lucía Lainz
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - María Iglesias
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Miren Díez-Zapirain
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Aintzane Rabanal
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
| | - Laura Bárcena
- Genome Analysis Platform, CIC bioGUNE-BRTA, Derio, Spain
| | | | - Juan J Lozano
- Bioinformatics Platform, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - Urko M Marigorta
- Integrative Genomics Lab, CIC bioGUNE-BRTA, Derio, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | | | - Félix Royo
- Exosomes Laboratory, CIC bioGUNE-BRTA, Derio, Spain.,Centro de Investigación Biomédica en Red en el Área temática de Enfermedades Hepáticas (CIBEReh), Madrid, Spain
| | - Ana M Aransay
- Genome Analysis Platform, CIC bioGUNE-BRTA, Derio, Spain.,Centro de Investigación Biomédica en Red en el Área temática de Enfermedades Hepáticas (CIBEReh), Madrid, Spain
| | - Nerea Subiran
- Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain.,Department of Physiology, Faculty of Medicine and Dentistry, University of the Basque Country (UPV/EHU), Leioa, Spain
| | - Roberto Matorras
- Human Reproduction Unit, Cruces University Hospital, University of the Basque Country (UPV/EHU), Barakaldo, Spain.,Innovation in Assisted Reproduction Group, Biocruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain.,Department of Obstetrics and Gynecology, University of the Basque Country (UPV/EHU), Leioa, Spain.,Instituto Valenciano de Infertilidad (IVI) Bilbao/IVIRMA, Leioa, Spain
| | - Juan Manuel Falcón-Pérez
- Exosomes Laboratory, CIC bioGUNE-BRTA, Derio, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, Spain.,Centro de Investigación Biomédica en Red en el Área temática de Enfermedades Hepáticas (CIBEReh), Madrid, Spain.,Metabolomics Platform, CIC bioGUNE-BRTA, Derio, Spain
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Prieto B, Diaz-Nuñez M, Lainz L, Vendrell A, Rabanal A, Iglesias M, Jauregui T, Corcostegui B, Matorras A, Perez S, Matorras R. Aspiration of excess follicles before intrauterine insemination in high response cycles. Reprod Med Biol 2022; 21:e12470. [PMID: 35781922 PMCID: PMC9241166 DOI: 10.1002/rmb2.12470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 05/12/2022] [Accepted: 05/23/2022] [Indexed: 11/11/2022] Open
Abstract
Purpose To assess the outcome of excess follicle aspiration before intrauterine insemination (EFABI) in intrauterine insemination (IUI) cycles with 4-6 follicles ≥14 mm. Methods A retrospective case-control study with 1559 patients undergoing IUI (donor and husband's sperm), of whom 86 underwent EFABI. We studied also an historical series of 2213 patients before EFABI implementation. For 3.5 years, all women undergoing IUI developing 4-6 follicles ≥14 mm were offered EFABI on the day of hCG administration. Pregnancy rates (PRs), multiple PRs, and adverse effects were measured. Results EFABI was associated with a similar multiple PR (17.8% vs 17.5% in non-EFABI cases), with no triplets in EFABI patients. Live birth rates were significantly higher in EFABI cycles in IUI overall (25.5% vs 15.2%). When considered separately, the performance of EFABI resulted in significantly increased live birth rates in IUI-donor cycles (32.5% vs 18.5%), whereas the differences in IUI-husband cycles (19.5% vs 12.9%) did not reach statistical significance. The PR was 21.2% during the EFABI implementation period and 19.4% in the pre-EFABI period. Conclusions EFABI in cycles in which 4-6 follicles reach ≥14 mm is a simple option that reduces cycle cancellation rates, results in higher PRs than cycles with 1-3 follicles, and lowers the risk of multiple pregnancy.
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Affiliation(s)
- Begoña Prieto
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain.,Faculty of Medicine University of the Basque Country Lejona Spain.,Biocruces Bizkaia Health Research Institute Barakaldo Spain.,Instituto Valenciano de Infertilidad (IVI) Leioa Spain
| | - Maria Diaz-Nuñez
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain.,Biocruces Bizkaia Health Research Institute Barakaldo Spain
| | - Lucia Lainz
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain.,Biocruces Bizkaia Health Research Institute Barakaldo Spain
| | | | - Aintzane Rabanal
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain.,Faculty of Medicine University of the Basque Country Lejona Spain
| | - Maria Iglesias
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain.,Biocruces Bizkaia Health Research Institute Barakaldo Spain
| | - Teresa Jauregui
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain
| | | | - Ana Matorras
- European University of Madrid Villaviciosa de Odón, Madrid Spain
| | - Silvia Perez
- Biocruces Bizkaia Health Research Institute Barakaldo Spain
| | - Roberto Matorras
- Human Reproduction Unit Cruces University Hospital Barakaldo Spain.,Faculty of Medicine University of the Basque Country Lejona Spain.,Biocruces Bizkaia Health Research Institute Barakaldo Spain.,Instituto Valenciano de Infertilidad (IVI) Leioa Spain
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Ji M, Jin B, Guo X, Wu R, Jiang Y, Zhang L, Shu J. It is not worth postponing frozen embryo transfers after oocyte pickup: A retrospective cohort study based on propensity score matching. Front Endocrinol (Lausanne) 2022; 13:971616. [PMID: 36133317 PMCID: PMC9483166 DOI: 10.3389/fendo.2022.971616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Accepted: 08/17/2022] [Indexed: 11/13/2022] Open
Abstract
This study was to explore whether postponing frozen embryo transfers (FET) after oocyte pickup (OPU) improves clinical and neonatal outcomes. From May 2018 to Dec 2020, a total of 1109 patients underwent their first OPU cycles adopting a non-selective freeze-all policy were included in this retrospective cohort study. In the immediate group (n=219), patients underwent FET in the first menstrual cycle after OPU, and patients in the postponed group (n=890) waited for more than 1 menstrual cycle after OPU to perform FET. A propensity score matching (PSM) model was used to evaluate the clinical outcomes and neonatal outcomes between the two groups. There were 209 patients in the immediate group and 499 patients in the postponed one after PSM. Patients waited for a significantly shorter period for FET in the immediate group (30.74 ± 3.85 days) compared with the postponed group (80.39 ± 26.25 days, P<0.01). The clinical pregnancy rate (CPR) and live birth rate (LBR) in the immediate group were 58.4% and 48.3%, respectively, which were comparable to those of the postponed one (58.1%, 49.7%, P > 0.05). No statistical significance was found in the average birth weight (3088.82 ± 565.35 g vs 3038.64 ± 625.78 g, P > 0.05) and height (49.08 ± 1.87 cm vs 49.30 ± 2.52 cm) of neonates between the two groups. The gender ratio, the incidence of macrosomia and low birth weight did not differ significantly between the two groups. In conclusion, postponing FET does not improve clinical and neonatal outcomes. If patients have no contraindications, FETs should be carried out immediately after OPU.
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Affiliation(s)
- Mengxia Ji
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Bihui Jin
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Xiaoyan Guo
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Ruifang Wu
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Yunqing Jiang
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Ling Zhang
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
| | - Jing Shu
- Department of Reproductive Endocrinology, Center for Reproductive Medicine, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, China
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