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Introduction: This large multicenter study aimed to evaluate clinical outcomes using three follitropin alfa preparations within a progestin-primed ovarian stimulation (PPOS) protocol, while identifying contributing factors to cycle success. Methods: A retrospective, anonymized cohort analysis was conducted on donor-recipient cycles from 12 clinics during 2019 to 2021. 7389 oocyte donors underwent ovarian stimulation (OS) with three follitropin alfa preparations (Ovaleap® [n=3231], Bemfola® [n=3542], Gonal-F® [n=616]) were included. Stimulation began on cycle days 2 or 3 with daily administration of 150-225 IU follitropin alfa. 10 mg medroxyprogesterone acetate (MPA) was administered daily until GnRH agonist trigger using a single dose of 0.2mg GnRH agonist for final follicular maturation. Statistical analysis included ANOVA, Chi-squared, and logistic regression. Results: Whilst there were some differences in patient and stimulation characteristics, including donor age and number of retrieved oocytes, clinical variables did not significantly differ among the three study groups. Linear regression revealed donor age [0.986 (0.974-0.999)] and number of mature oocytes [1.027 (1.007-1.047)] significantly impacted ongoing pregnancy rates, while the type of follitropin alfa [1.048 (0.956-1.149)] used did not. No significant differences were observed in the cumulative live birth rate (CLBR) among oocytes obtained from stimulation with Bemfola (64.9%), Gonal-F (64.1%) and Ovaleap (66.1%), p= 0.385. Discussion: This study demonstrated comparable clinical outcomes and CLBR between biosimilars and the reference product of follitropin alfa within PPOS protocols, hence they are interchangeable in a real-world patient setting. [ABSTRACT FROM AUTHOR]

Background: An enduring challenge for women diagnosed with Turner syndrome (TS) is infertility. Oocyte donation (OD) offers a chance of pregnancy for these patients. However, current data on pregnancy outcomes are inadequate. Hence, this systematic review aims to explore the clinical outcomes of OD in patients with TS. Methods: A systematic search was conducted in PubMed, Web of Sciences, Scopus, and Embase for relevant papers from 1 January 1990 to 30 November 2023. Our primary research objective is to determine the live birth rate among women with TS who have undergone in vitro fertilization (IVF) using OD for fertility purposes. Specifically, we aim to calculate the pooled live birth rates per patient and per embryo transfer (ET) cycle. For secondary outcomes, we have analyzed the rates of clinical pregnancy achievement per ET cycle and the incidence of gestational hypertensive complications per clinical pregnancy. Prevalence meta-analyses were performed using STATA 18.0 by utilizing a random-effects model and calculating the pooled rates of each outcome using a 95% confidence interval (CI). Results: A total of 14 studies encompassing 417 patients were systematically reviewed. Except for one prospective clinical trial and one prospective cohort study, all other 12 studies had a retrospective cohort design. Our meta-analysis has yielded a pooled live birth rate per patient of 40% (95% CI: 29-51%; 14 studies included) and a pooled live birth rate per ET cycle of 17% (95% CI: 13-20%; 13 studies included). Also, the pooled clinical pregnancy achievement rate per ET cycle was estimated at 31% (95% CI: 25-36%; 12 studies included). Moreover, the pooled rate of pregnancy-induced hypertensive disorders per clinical pregnancy was estimated at 12% (95% CI: 1-31%; 8 studies included). No publication bias was found across all analyses. Conclusions: This study demonstrated promising pregnancy outcomes for OD in patients with TS. Further studies are essential to address not only the preferred techniques, but also the psychological, ethical, and societal implications of these complex procedures for these vulnerable populations. Trial registration: This systematic review was registered in the International Prospective Register of Systematic Reviews (PROSPERO) under the registration code CRD42023494273. [ABSTRACT FROM AUTHOR]

Purpose: In this survey, we aimed to provide the description of previous oocyte donors' profile in a Belgian tertiary fertility hospital clinic. The research question is as follows: could certain aspects be changed or improved, according to previous oocyte donors? The final purpose is to boost adherence to future oocyte donation (OD) programs, given the large gap between supply and demand. Methods: We set up an observational cross-sectional study of oocyte donors who were recruited in a tertiary referral hospital. Participants were asked to join an anonymous online survey with questions about demographic and reproductive variables, reasons to start or discontinue OD, satisfaction rate, experience, and attitude towards presumed anonymity. Results: A total of 218 women were eligible to join the study, with a response rate of 49% (108/218). The emerging profile of the oocyte donor is a well-educated (102/108 with at least a high school degree), employed (86/108) woman in her thirties. Altruism and solidarity were the main drivers of their choice (105/108), and a general permissive attitude towards disclosure of their personal information to the recipient (60/108) was registered. In case of negative experience or discontinuation, concerns regarding pain management and specific long-lasting psychological support were expressed (8/20). Conclusions: Our findings suggest the need to improve pain relief and to offer psychological support even beyond ending the donation process. These interventions could improve both participation and adherence to OD programs, ensuring an autonomous and free choice while avoiding any risk of exploitation. [ABSTRACT FROM AUTHOR]

Purpose: In 2015, assisted reproductive technology (ART) accounted for 1.7% of all U.S. births, donor eggs accounted for over 17,000 started cycles in 2015, and donor sperm accounting for 6.2% of all cycles started in 2014. With increasing utilization of donor gametes as a method of assisting patients with infertility, the number of babies born each year utilizing gamete donation will also continue to increase. This study aimed to elucidate factors impacting decision to donate, amongst a representative national population. Methods: A survey was distributed via the internet utilizing SurveyMonkey Enterprise with HIPAA compliance. Univariate regressions and frequencies were conducted between each demographic and personal characteristic and the willingness to donate. Log Binomial and linear regression was used categorical and continuous variables, and Risk ratios were calculated. Results: In this large survey study, 64% of men and 50% of women reported they would be willing to donate gametes, with the majority desiring monetary compensation. Men with a high Consumer Financial Protection Bureau score were less likely to report that they would consider donating sperm compared to a medium high CFPB score. No other financial indicators were associated with considering donating sperm. There were no associations between CFPB score and egg donation outcomes. Black or African American women were less likely to consider donating their eggs compared to other groups, and more likely to desire > $5000 in compensation. Conclusions: In this large survey study, a small minority of participants reported they would be willing to donate to an unknown infertility patient for reproductive purposes. High and very high CFPB scores were associated with willingness to donate games, but not with desire for monetary compensation or amount. [ABSTRACT FROM AUTHOR]

Abstract Background An enduring challenge for women diagnosed with Turner syndrome (TS) is infertility. Oocyte donation (OD) offers a chance of pregnancy for these patients. However, current data on pregnancy outcomes are inadequate. Hence, this systematic review aims to explore the clinical outcomes of OD in patients with TS. Methods A systematic search was conducted in PubMed, Web of Sciences, Scopus, and Embase for relevant papers from 1 January 1990 to 30 November 2023. Our primary research objective is to determine the live birth rate among women with TS who have undergone in vitro fertilization (IVF) using OD for fertility purposes. Specifically, we aim to calculate the pooled live birth rates per patient and per embryo transfer (ET) cycle. For secondary outcomes, we have analyzed the rates of clinical pregnancy achievement per ET cycle and the incidence of gestational hypertensive complications per clinical pregnancy. Prevalence meta-analyses were performed using STATA 18.0 by utilizing a random-effects model and calculating the pooled rates of each outcome using a 95% confidence interval (CI). Results A total of 14 studies encompassing 417 patients were systematically reviewed. Except for one prospective clinical trial and one prospective cohort study, all other 12 studies had a retrospective cohort design. Our meta-analysis has yielded a pooled live birth rate per patient of 40% (95% CI: 29-51%; 14 studies included) and a pooled live birth rate per ET cycle of 17% (95% CI: 13-20%; 13 studies included). Also, the pooled clinical pregnancy achievement rate per ET cycle was estimated at 31% (95% CI: 25-36%; 12 studies included). Moreover, the pooled rate of pregnancy-induced hypertensive disorders per clinical pregnancy was estimated at 12% (95% CI: 1-31%; 8 studies included). No publication bias was found across all analyses. Conclusions This study demonstrated promising pregnancy outcomes for OD in patients with TS. Further studies are essential to address not only the preferred techniques, but also the psychological, ethical, and societal implications of these complex procedures for these vulnerable populations. Trial registration This systematic review was registered in the International Prospective Register of Systematic Reviews (PROSPERO) under the registration code CRD42023494273.

Background: Infertility along with fertility treatments has been reported to have a devastating effect on the well-being of the individuals involved as well as their relationship. So far, the studies exploring the impact on the relationship have mainly focused on heterosexual couples facing infertility and undergoing treatment. There is, therefore, a lack of data on the potential role of sexual orientation, gamete origin, as well as treatment success on the risk of separation after fertility treatment. The purpose of this study was, thus, to explore whether sexual orientation, donation treatment, and fertility success affected the relationship well-being and to explore various separation-related aspects. Methods: We have performed a prospective cohort study of heterosexual and homosexual couples undergoing fertility treatment with autologous and donated gametes in Sweden and followed them for up to 10 years after receiving fertility treatment. In the current follow-up study, 660 individuals have been included. Results: Almost 39% of lesbian couples participating reported having separated as opposed to 11–17% of heterosexual couples undergoing treatment with own or donated gametes. Neither background factors nor treatment success protected against separation. By using the relationship satisfaction ENRICH tool, we were able to demonstrate that dissatisfaction of one of the lesbian spouses or heterosexual spouses undergoing oocyte donation increased significantly the risk of separation 8–10 years after treatment commencement. Conclusion: The findings can be used by fertility clinics to provide relationship tools to the treated couples in order to help them nurture their relationship and decrease the risk of separation in the long run.

Background/Objectives: Although high live birth rates are associated with oocyte donation (OD), these pregnancies are associated with increased obstetric and perinatal risks. This study evaluated maternal and neonatal risks after OD compared to in vitro fertilization (IVF) with autologous oocytes, and to spontaneous pregnancies (SPs), among singletons, twins and triplets. Methods: A retrospective, large, population-based cohort study was conducted based on electronic data from Maccabi Healthcare Services. A total of 469,134 pregnancies were grouped according to the mode of conception. The main outcome measures were preterm birth (PTB), small for gestational age (SGA) and pregnancy-induced hypertension (PIH). The data were analyzed separately for singletons, twins and triplets. Results: The mean maternal age was older in the OD group compared with the IVF and SP groups (singletons: 39.7 ± 4.1 vs. 34.5 ± 4.8 and 31.7 ± 5.3 years; twins: 39 ± 4.6 vs. 32.6 ± 4.4 and 31.2 ± 5.1 years; and triplets: 35.6 ± 2.5 vs. 32 ± 3.9 and 29.7 ± 5 years). The mean gestational age was younger among the OD group compared to the SP group (singletons: 37.5 ± 3 vs. 39 ± 2 p = 0.001, and twins: 35 ± 3 vs. 36 ± 2.5 p = 0.001). Higher rates of PTB < 37, PTB < 34 and PTB < 28 weeks were found among OD singletons. Multivariable logistic regressions for PTB < 37 weeks and SGA in singletons demonstrated that OD and IVF are significant risk factors (OR = 4.1, 95%CI = 3.3–5.2; OR = 4.3, 95%CI = 4.1–4.6; OR = 1.9, 95%CI = 1.3–2.6; OR = 2.2, 95%CI = 2–2.4, respectively). Significantly higher rates of PIH were demonstrated among the OD vs. IVF and SP groups in singleton (4.3% vs. 1.7% and 0.7%) and in twin pregnancies (7.5% vs. 4.3% and 3.4%). Conclusions: OD pregnancies are at increased risk for PTB, SGA and PIH. [ABSTRACT FROM AUTHOR]

Background Objective Materials and methods Results Conclusions Vasectomy is a widely used method of contraception. However, some men may have the desire to become biological fathers again after a period.To explore the effect of time since vasectomy and different male comorbidities on live birth rates from intracytoplasmic sperm injection cycles using donated oocytes by using testicular spermatozoa obtained by testicular sperm extraction.This was a retrospective study of 123 couples who underwent a testicular sperm extraction‒intracytoplasmic sperm injection cycle after vasectomy using donated oocytes. Subjects were divided into groups according to time since vasectomy and the male risk factor evaluated. The main outcomes measured were live birth rate per embryo transfer, per oocyte donation cycle, and per couple. We assessed the cumulative live birth rate according to the time since vasectomy and considered male comorbidities: body mass index, hypertension, diabetes mellitus, dyslipidemia, and smoking.The overall live birth rate per couple was 59.3% (50.6–68.0). Considering the number of embryo transfer and oocyte donation cycle, the live birth rates were 34.1% (27.8–40.4) and 44.5% (36.9–52.1), respectively. The live birth rate according to time since vasectomy was not statistically different between groups. Consequently, the cumulative live birth rate was similar between the different interval times when considering one to eight embryo transfers (p = 0.74). No statistical differences in live birth rate and cumulative live birth rate were found between groups clustered according to male body mass index, smoking, hypertension, and dyslipidemia. However, diabetic male patients had a significantly lower rate of live birth rate per couple (22.2% [4.94–49.4]) than non‐diabetic patients did (62.7% [53.7–71.8]) (p = 0.03), but not in their cumulative live birth rate.The time since vasectomy seems to have no detrimental effects on the live birth rate and cumulative live birth rate in testicular sperm extraction‒intracytoplasmic sperm injection cycles with donated oocytes. Male diabetes negatively affects the overall live birth rate per couple, but not the cumulative live birth rate. These results could be useful for multidisciplinary patient‐tailored counseling, regarding the chance of having a pregnancy and facilitating the decision‐making process of the fertility specialists. [ABSTRACT FROM AUTHOR]

Objective: Many women with Turner syndrome (TS) will consider fertility options and pregnancy. We wished to examine the fertility and pregnancy outcomes in women with TS undergoing oocyte donation (OD) treatment or spontaneous pregnancy in a large single‐centre cohort. General population reference data or data from those with idiopathic premature ovarian insufficiency were used as comparators. Design: A retrospective single‐centre cross‐sectional study. Patients and Measurements: Seventy‐four women with TS underwent OD treatment with a total of 105 pregnancies, and 31 women with TS had 71 spontaneous conceptions. Fertility outcomes included clinical pregnancy and live birth rate. Pregnancy outcomes included miscarriage rate, prevalence of hypertension, gestational diabetes, lower segment caesarean section (LSCS), small for gestational age (SGA), prematurity and vertical transmission of TS. Results: In those with TS, OD pregnancies were associated with increased rates of LSCS and SGA compared to spontaneous pregnancies; LSCS (OR: 4.19, 95% CI: 1.6−10.8, p =.003) and SGA (OR: 2.92, 95% CI: 1.02−8.38, p =.04). There were no recorded cardiac events but 5 (17.2%) cases of vertical transmissions of TS in daughters were identified. OD in those with TS was associated with a lower live birth rate per cycle started (OR: 0.53, 95% CI: 0.34−0.84, p =.008) and a higher rate of miscarriage compared to women with POI (40% vs. 26.2%, p =.04). Conclusions: We show that pregnancy in women with TS, whether OD or spontaneously conceived, carries obstetric risks, and therefore, women with TS, considering pregnancy, should receive comprehensive pre‐pregnancy counselling and optimal obstetric care. [ABSTRACT FROM AUTHOR]

A great deal of work has been carried out by professionals in reproductive medicine in order to raise awareness about fertility preservation (FP) techniques, particularly for women, and to ensure that FP is included in the care of young adults treated for cancer or a pathology requiring gonadotoxic treatment. If the importance of the development of our discipline is obvious, our militancy in favour of FP and our emotional projections must not make us forget that medical thinking must be carried out not only on a case-by-case basis, weighing up the benefit-risk balance, but also without losing sight that conceiving a child with one's own gametes is not a vital issue. The cultural importance given to the genetic link with offspring may bias patients' and physicians' decisions, while other ways of achieving parenthood exist, and are often more effective. Systematic information should be provided on the existence of FP techniques, but this should not lead to their systematic implementation, nor should it obscure that early information will also allow patients to begin projecting themselves in alternative options to become parents. [ABSTRACT FROM AUTHOR]

STUDY QUESTION Does the use of frozen sperm affect live birth rate (LBR) and cumulative LBR (CLBR) compared to fresh sperm samples in oocyte donation ICSI cycles? SUMMARY ANSWER Although there were slight decreases in pregnancy rates (PRs) and LBR, as well as CLBR per embryo replaced and per embryo transfer (ET), when frozen sperm samples were used compared to fresh ejaculates, their clinical impact was limited. WHAT IS KNOWN ALREADY Sperm cryopreservation is part of the daily routine in reproduction clinics worldwide because of its many advantages in cycle planning. Nonetheless, there is a lack of agreement in terms of its impact on the outcomes of ICSI cycles. Previous studies showed conflicting conclusions and focused on different populations, which makes reaching consensus on the impact of sperm freezing-thawing complicated. Moreover, classical parameters are used to assess cycle success: pregnancy, live birth and miscarriage rates per ET. This study reports those measurements plus CLBR, which more accurately reflects the impact of the technique on the likelihood of achieving a newborn. STUDY DESIGN, SIZE, DURATION A retrospective multicenter observational cohort study, including data from 37 041 couples and 44 423 ICSI procedures from January 2008 to June 2022, was carried out. The group using frozen sperm included 23 852 transferred embryos and 108 661 inseminated oocytes, whereas the fresh sample group comprised 73 953 embryos replaced and 381 509 injected oocytes. PARTICIPANTS/MATERIALS, SETTING, METHODS Outcomes measured per first ET and per ET were compared between groups using Fisher's exact test and Chi-squared test, as appropriate. Binary-logistics regression models were used to adjust the analyses according to clinically relevant co-variables. Kaplan–Meier curves plotted the CLBR per oocyte inseminated, per embryo replaced and per ET, and compared between groups using the Mantel–Cox test. Cox regressions were employed for the multivariate analyses of CLBR. MAIN RESULTS AND THE ROLE OF CHANCE The frozen sperm group showed a slightly lower biochemical (3.55% and 2.56%), clinical (3.68% and 3.54%) and ongoing (3.63% and 3.15%) PR compared to the cycles using fresh sperm, respectively, both per first ET and per ET. LBR was 4.57% lower per first ET and 3.95% lower per ET in the frozen sperm group than the fresh sperm group. There was also a subtle increase of 2.66% in biochemical miscarriage rate per ET when using frozen versus fresh sperm. All these differences remained statistically significant after the multivariate analysis (adjusted P  ≤ 0.001). There were statistically significant differences in CLBR per embryo replaced and per ET but not per oocyte used (adjusted P  = 0.071). Despite the statistical significance of the differences between the groups, those using frozen sperm required only 0.54 more oocytes injected, 0.45 more embryos transferred and 0.41 more ET procedures, on average, to achieve a live birth compared to the fresh samples. LIMITATIONS, REASONS FOR CAUTION The retrospective nature of the study subjects the data to biases or potential errors during annotation on the source clinical and cycle records. This study uses multivariate analyses to control biases as much as possible. Using the oocyte donation model also contributes to reducing heterogeneity in the oocyte quality factor. WIDER IMPLICATIONS OF THE FINDINGS The large sample sizes included in this study allowed for the detection of small changes in cycle success rates between groups. Although statistically significant, the decrease in PRs, LBR, and CLBR when using frozen sperm can be clinically overlooked in favor of the many benefits of sperm cryopreservation. STUDY FUNDING/COMPETING INTEREST(S) None declared. TRIAL REGISTRATION NUMBER Not applicable [ABSTRACT FROM AUTHOR]

Purpose: To analyze the perinatal and maternal outcomes of women ranging in age from 40 to 45 years who gave birth after in vitro fertilization or oocyte donation, compared to spontaneous conception. Methods: This retrospective cohort study used electronic data from a national healthcare service from 2000 through 2019. Three groups were compared: spontaneous pregnancy (SC), in vitro fertilization (IVF) utilizing autologous oocytes, and pregnancies resulting from oocyte donation (OD). The primary study outcomes were preterm labor (PTL) before 37 weeks of gestation, and infants classified as small for gestational age (SGA). Results: The cohort included 26,379 SC, 2237 IVF pregnancies, and 300 OD pregnancies for women ages 40–45 years at delivery. Women with OD or IVF had a higher incidence of PTL < 37 weeks compared to women with SC (19.7% vs. 18% vs. 6.9%, p = 0.001), PTL < 34 (7% vs. 4.5% vs. 1.4%, p = 0.001), PTL < 32 (3.7 vs. 2.1 vs. 0.6, p = 0.001). A multivariable logistic regression for PTL < 37 weeks demonstrated that age (OR = 1.18) and hypertensive diseases (OR = 3.4) were statistically significant factors. The OD group had a lower rate of SGA compared to SC (1% vs. 4.3%, p = 0.001), while the IVF group had a higher rate of SGA compared to SC (9.1% vs. 4.3%, p = 0.001). Hypertensive diseases in pregnancy were significantly higher among the OD group and the IVF group compared to SP pregnancies (3.3% vs. 1%, p = 0.002; 2.3% vs. 1%, p = 0.001, respectively). Conclusions: Women ages 40–45 undergoing IVF or OD have a greater risk of PTL, possibly due to higher rates of hypertensive disorders of pregnancy. [ABSTRACT FROM AUTHOR]

The use of adult intrafamilial gamete donors and gestational surrogates is generally ethically acceptable when all participants are fully informed and counseled, but consanguineous arrangements or ones that simulate incestuous unions should be prohibited. Adult child-to-parent arrangements require caution to avoid coercion, and parent-to-adult child arrangements are acceptable in limited situations. Programs that choose to participate in intrafamilial arrangements should be prepared to spend additional time counseling participants and ensuring that they have made free, informed decisions. This document replaces the document of the same name, last published in 2017. [ABSTRACT FROM AUTHOR]

STUDY QUESTION Can the application of the theory of planned behavior (TPB) help predict heterosexual parents' disclosure of donor conception to their children? SUMMARY ANSWER Parents with a stronger will to act in accordance with social norms favoring disclosure were more likely to start the disclosure process within the next 5–9 years. WHAT IS KNOWN ALREADY In contrast to single mothers by choice and same-sex couples, heterosexual couples need to make an active decision to disclose their use of donor conception to their child. While disclosure at an early age is encouraged by international guidelines, many heterosexual-couple parents struggle with this. A previous study has found an association between parental scores of TPB factors and disclosure intention, but so far, no study has applied the TPB to predict parents' disclosure behavior. STUDY DESIGN, SIZE, DURATION The present study is based on the fourth and fifth waves of data collection (T4 and T5) in a nation-wide longitudinal study. Participating parents had conceived through identity-release oocyte donation (n = 68, response rate 65%) and sperm donation (n = 62, response rate 56%) as part of a heterosexual couple. PARTICIPANTS/MATERIALS, SETTING, METHODS The present study is part of the prospective longitudinal Swedish Study on Gamete Donation (SSGD). Consecutive recruitment of couples starting oocyte or sperm donation treatment was conducted at all seven fertility clinics providing gamete donation in Sweden during a 3-year period (2005–2008). Participants were requested to complete postal surveys at five time points. The present study includes heterosexual-couple parents following oocyte or sperm donation who participated at the two latest time points when their children were 7–8 years old (T4), and 13–17 years old (T5). At T4, participants completed the study-specific TPB Disclosure Questionnaire (TPB-DQ) measuring attitudes and intentions to disclose the donor conception to the child, and disclosure behavior was assessed at both T4 and T5. Data from those participants who had not yet disclosed at T4 were analyzed using survival analysis with Cox regressions. MAIN RESULTS AND THE ROLE OF CHANCE Forty participants had not disclosed the donor conception to their children at T4 and, out of these, 13 had still not disclosed at T5. We found a significant association between scores of the TPB factor Subjective norms at T4 and their subsequent disclosure behavior at T5 (HR = 2.019; 95% CI: 1.36–3.01). None of the other factors were significantly associated with disclosure behavior. LIMITATIONS, REASONS FOR CAUTION The present study concerns heterosexual-couple parents with children conceived following treatment with gametes from open-identity donors, which limits the generalizability of our findings to other groups and contexts. Other limitations include the risk of systematic attrition due to the longitudinal study design and decreased statistical power due to few participants. WIDER IMPLICATIONS OF THE FINDINGS Our findings highlight the importance of perceived subjective norms for parents' disclosure behavior and indicate that the co-parent's opinion about disclosure is of particular relevance in this regard. Counselors should focus on supporting prospective parents to initiate and maintain a healthy and open dialogue about concerns around building a family with donor conception. STUDY FUNDING/COMPETING INTEREST(S) The study was funded by the Swedish Research Council. The authors have no competing interests to declare. TRIAL REGISTRATION NUMBER N/A. [ABSTRACT FROM AUTHOR]

• The results demonstrate a clear pattern of increasing aneuploidy with donor age. • Younger donors exhibited a reduced rate of aneuploid embryos. • The rate of embryonic mosaicism seems comparable irrespective of the age of the donor. Conflicting data exists regarding whether a younger age of donors has a negative influence on the outcomes of oocyte donation cycles. Is there any correlation between a younger age of donors and the rate of embryonic aneuploidy in oocyte donation cycles? Retrospective study including 515 oocyte donation cycles carried out between February 2017 and November 2022. Comprehensive chromosomal screening was performed on 1831 blastocysts. 1793 had a result which were categorised into groups based on the age of the donor: 18–22 (n = 415), 23–25 (n = 600), 26–30 (n = 488), and 31–35 years (n = 290). The analysis aimed to determine the percentage of biopsy samples that were euploid and the number that were aneuploid, relative to the age group of the oocyte donor. Additionally, linear regression was employed to examine the relationship between age and the proportion of aneuploid embryos, while controlling for relevant variables. Aneuploidy increased predictably with donor age: 18–22 years: 27.5 %; 23–25 years: 31.2 %; 26–30 years: 31.8 %; and 31–35 years: 38.6 %. In the donor group aged 31–35 years, a higher percentage of aneuploid embryos was observed compared to younger donors in univariate analysis (OR: 1.66, 95 % CI: 1.21–2.29, p = 0.002) and multivariate logistic analysis (OR: 2.65, 95 % CI: 1.67–4.23, p < 0.001). The rates of embryonic mosaicism revealed no significant differences. The lowest risk of embryonic aneuploidy was found among donors aged <22 years. Conversely, an elevated prevalence was evident within the donor group aged 31–35 years, in contrast to the younger cohorts. The incidence of mosaic embryos remained consistent across all age groups. [ABSTRACT FROM AUTHOR]

PurposeTo evaluate self-reported survey data provided by US oocyte donors on their experiences with ovarian hyperstimulation syndrome and possible correlations between OHSS severity and number of oocytes retrieved, trigger type, and prior OHSS history.MethodsAn 85-question retrospective survey was administered online. Survey questions included demographic information, reasons for donating, immediate per-cycle experiences and outcomes, perceptions of informed consent, and perceived impact of donation on long-term health. Quantitative Data for this study was collected between February 2019 and September 2020 via QualtricsXM (January 2019), an online survey platform. Follow-up interviews were also conducted. Participants were recruited via fertility clinics, egg donation agencies, and online forum. The research was approved by the University of California, San Francisco Institutional Review Board (#14-14765).ResultsOf 420 initiated US oocyte donor online surveys, 289 (68%) respondents provided detailed information on per cycle experiences with ovarian hyperstimulation syndrome, number of oocytes retrieved, and trigger type over a total of 801 cycles. On cycles where donors reported receiving GnRH agonist triggers (n = 337), they reported milder OHSS compared to cycles with hCG or dual triggers. Among donors undergoing multiple retrieval cycles, the severity of OHSS in second cycles was strongly associated with OHSS severity in first cycles.ConclusionSelf-reported OHSS in oocyte donors is lower in GnRH antagonist stimulation protocols combined with GnRHa trigger and in cycles where donors reported fewer than 30 oocytes retrieved. Donors who reported severe OHSS on a prior cycle were significantly more likely to experience severe OHSS on a subsequent cycle.

IntroductionThis large multicenter study aimed to evaluate clinical outcomes using three follitropin alfa preparations within a progestin-primed ovarian stimulation (PPOS) protocol, while identifying contributing factors to cycle success.MethodsA retrospective, anonymized cohort analysis was conducted on donor-recipient cycles from 12 clinics during 2019 to 2021. 7389 oocyte donors underwent ovarian stimulation (OS) with three follitropin alfa preparations (Ovaleap® [n=3231], Bemfola® [n=3542], Gonal-F® [n=616]) were included. Stimulation began on cycle days 2 or 3 with daily administration of 150-225 IU follitropin alfa. 10 mg medroxyprogesterone acetate (MPA) was administered daily until GnRH agonist trigger using a single dose of 0.2mg GnRH agonist for final follicular maturation. Statistical analysis included ANOVA, Chi-squared, and logistic regression.ResultsWhilst there were some differences in patient and stimulation characteristics, including donor age and number of retrieved oocytes, clinical variables did not significantly differ among the three study groups. Linear regression revealed donor age [0.986 (0.974-0.999)] and number of mature oocytes [1.027 (1.007-1.047)] significantly impacted ongoing pregnancy rates, while the type of follitropin alfa [1.048 (0.956-1.149)] used did not. No significant differences were observed in the cumulative live birth rate (CLBR) among oocytes obtained from stimulation with Bemfola (64.9%), Gonal-F (64.1%) and Ovaleap (66.1%), p= 0.385.DiscussionThis study demonstrated comparable clinical outcomes and CLBR between biosimilars and the reference product of follitropin alfa within PPOS protocols, hence they are interchangeable in a real-world patient setting.

Purpose: This study aims to retrospectively estimate cumulative reproductive outcomes in women with primary ovarian insufficiency (POI) in assisted reproductive technology (ART) therapy. Methods: A total of 139 patients diagnosed with POI were reviewed in this study. Firstly, they were divided into two groups according to oocyte origin: using their own oocytes (OG group) or accepting oocyte donations (OD I group). Secondly, the patients were split depending on the pregnancy outcome. In the OG group, nine patients decided to use others' oocytes after a failure of attempting to use their own, and this population was the oocyte donation II group (OD II group). Results: There were 88 patients who used their own oocytes, while 51 patients accepted oocyte donations. In the OG group, there are only 10 (7.2%) patients who got pregnant, and patients in the OD group had worse hormone levels (FSH 71.37 ± 4.18 vs. 43.98 ± 2.53, AMH 0.06 ± 0.04 vs. 1.15 ± 0.15, and AFC 0.10 ± 0.06 vs. 1.15 ± 0.15) and more years of infertility (5.04 ± 0.48 vs. 3.82 ± 0.30), which explained why they choose oocyte donation. In all the three groups, baseline characteristics were comparable between pregnant women and nonpregnant women. Of the 10 pregnant patients in the OG group, four of them used luteal-phase short-acting long protocol and had pregnancies successfully in their first cycles. Conclusion: Ovarian stimulation in POI women requires more cost and time. For those with a stronger desire to have genetic offspring, luteal-phase short-acting long protocol may help them obtain pregnancy rapidly. [ABSTRACT FROM AUTHOR]

Background: Turner syndrome (TS) is recognized with partial or complete loss of the second sex chromosome, occurring in approximately one in 2500 live births, and related to high failure of pregnancy. However, along with the advantage of assisted reproductive technology, the cases of TS pregnant women have been recently addressed worldwide. Therefore, the reproductive health of TS pregnant women should be a concern by physicians and obstetricians, particularly, in the low-middle income countries with low-resource settings. Case Presentation: Here, we describe a rare case of term pregnancy on a TS woman (45, XO) receiving oocyte donation at a private fertility center. Later, the woman was monitored uneventfully during antenatal care and hospitalized at our center for a cesarean delivery with favorable pregnancy outcomes at term. Conclusion: To our knowledge, this is the first report relating to a particular pathology in Vietnam. Through this case report, we would like to emphasize the novel opportunity for TS women desiring parents, thus raising an appropriate awareness of healthcare providers. [ABSTRACT FROM AUTHOR]

There is a high demand for egg donors in the Czech Republic, driven by international couples’ interest in assisted reproductive procedures due to affordable treatment, no waiting list, and an extended age limit for recipients up to 49 years. For a population of 10.5 million, the country has 48 reproductive clinics. This study aims to evaluate Czech egg donor recruitment campaigns through the lens of free, informed, and specific consent requirements. A quantitative-qualitative analysis of recruitment strategies from 29 unique clinic websites in Czechia was conducted, with 12 sites specifically designed for marketing purposes. The analysis was based on 14 criteria. Of the 29 clinic websites, only three did not indicate compensation amounts, ranging from 800 to 1400 EUR. Thirteen clinics did not provide information on risks associated with oocyte donation, with one falsely stating no risks exist. Twentytwo websites used emotionally evocative quotes and images. Thirteen clinics did not disclose time commitments, and one provided misleading information. Seventeen clinics omitted conditions for donor refusal and the number of allowable donations. Eighteen clinics did not offer post-donation referrals. Conversely, 15 clinics highlighted psychological benefits, and 23 emphasized health benefits. None fully complied with international guidelines on oocyte donation. Analysed websites lack sufficient information for responsible egg donation decisions. The emphasis on compensation, benefits, and suggestive graphics creates an image of safe, community-oriented donation, potentially leading to inadequate understanding of health risks and commodification of the female body [ABSTRACT FROM AUTHOR]

STUDY QUESTION How do oocyte donors and recipients perceive the genetic link related to the transfer of nuclear DNA between donors and offspring? SUMMARY ANSWER Whether they are donors or recipients, individuals attach great importance to the transmission of their genetic heritage, since 94.5% would opt for the pronuclear transfer method to preserve this genetic link in the context of oocyte donation. WHAT IS KNOWN ALREADY Since 1983, the use of oocyte donation has increased worldwide. Performed in France since the late 1980s and initially offered to women with premature ovarian insufficiency, its indications have progressively expanded and now it is proposed in many indications to prevent the transmission of genetically inherited diseases. This has resulted in an increase in the waiting time for access to oocyte donation due to the difficulty in recruiting oocyte donors in French ART centres. Several articles have discussed how to fairly distribute donor oocytes to couples, but few have interviewed women in the general population to record their feelings about oocyte donation, as either the donor or recipient and the importance given to the genetic link between the oocyte donors and the children born. Mitochondrial replacement therapy (MRT) is a technique originally developed for women at risk of transmitting a mitochondrial DNA mutation. Recently, MRT has been considered for embryo arrest and oocyte rejuvenation as it could help females to reproduce with their own genetic material through the transfer of their oocyte nucleus into a healthy donor oocyte cytoplasm. STUDY DESIGN, SIZE, DURATION We conducted an opinion survey from January 2021 to December 2021, during which 1956 women completed the questionnaire. Thirteen participants were excluded from the analysis due to incomplete responses to all the questions. Consequently, 1943 women were included in the study. PARTICIPANTS/MATERIALS, SETTING, METHODS We specifically developed a questionnaire for this study, which was created and distributed using the Drag'n Survey® software. The questionnaire consisted of 21 items presented alongside a video created with whiteboard animation software. The aim was to analyse whether certain factors, such as age, education level, marital status, number of children, use of ART for pregnancy, video viewing, and knowledge about oocyte donation, were associated with feelings towards oocyte donation, by using a univariate conditional logistic regression model. This statistical method was also used to assess whether women would be more inclined to consider oocyte donation with the pronuclear transfer technique rather than the whole oocyte donation. All parameters found to be statistically significant in the univariate analysis were subsequently tested in a multivariate model using logistic regression. MAIN RESULTS AND THE ROLE OF CHANCE Most women were concerned about the biological genetic contribution of the donated oocyte (94.8%). The most common reason for a women's reluctance to donate their oocytes was their unwillingness to pass on their genetic material (33.3%). Nearly 70% of women who were initially hesitant to donate their oocytes indicated that they would reconsider their decision if the oocyte donation was conducted using donated cytoplasm and the pronuclear transfer technique. Concomitantly, >75% of the respondents mentioned that it would be easier to receive a cytoplasm donation. The largest proportion of the population surveyed (94.5%) expressed their support for its legalization. LIMITATIONS, REASONS FOR CAUTION In this study, a substantial portion of the responses came from individuals with medical or paramedical backgrounds, potentially introducing a recruitment bias among potential donors. The rate of missing responses to the question regarding the desire to become an oocyte donor was 13.6%, while the question about becoming an oocyte cytoplasm donor had a missing response rate of 23%. These missing responses may introduce a bias in the interpretation of the data. WIDER IMPLICATIONS OF THE FINDINGS This study was the first to demonstrate that, for the French population studied, the combination of oocyte cytoplasm donation with pronuclear transfer could offer a promising approach to enhance the acceptance of oocyte donation for both the donor and the recipient. STUDY FUNDING/COMPETING INTEREST(S) No external funding was used for this study. The authors have no conflicts of interest. TRIAL REGISTRATION NUMBER N/A. [ABSTRACT FROM AUTHOR]

Over the years, cases of fraud have been discovered where donors have been lying about their characteristics. The question raised by such cases is what the responsibility of the gamete bank is for the non-medical information provided by the donor. The problem is that extended donor profiles contain a large amount of information about different aspects of the donor's life and that not all this information can be verified or is worth verifying. Two cases are scrutinized in more detail: education and criminal record. The proposed solution is to split the donor information into a verified and a non-verified part with the non-verified part falling under the responsibility of the donor. The question of what information should be included in the verified part of the donor profile is still open. [ABSTRACT FROM AUTHOR]

Introduction: Progesterone-primed cycles effectively suppress the pituitary LH surge during ovarian stimulation in oocyte donors and in the infertile population. Particularly in oocyte donors, the use of synthetic progesterone (progestins) has been explored in prospective clinical trials, showing mixed results. This trial was designed to determine whether the use of micronized natural progesterone is as effective as the GnRH-antagonist protocol in terms of the number of mature oocytes (MII) retrieved in oocyte donation cycles as a primary outcome, and it also aims to explore the corresponding results in recipients as a secondary outcome. Methods: We propose a prospective, open-label, non-inferiority clinical trial to compare a novel approach for oocyte donors with a control group, which follows the standard ovarian stimulation protocol used in our institution. A total of 150 donors (75 in each group) will be recruited and randomized using a computer algorithm. After obtaining informed consent, participants will be randomly assigned to one of two ovarian stimulation protocols: either the standard GnRH antagonist or the oral micronized natural progesterone protocol. Both groups will receive recombinant gonadotropins tailored to their antral follicle count and prior donation experiences, if any. The primary outcome is the number of mature metaphase II (MII) oocytes. Secondary measures include treatment duration, pregnancy outcomes in recipients, as well as the economic cost per MII oocyte obtained in each treatment regimen. Analyses for the primary outcome will be conducted in both the intention-to-treat (ITT) and per-protocol (PP) populations. Each donor can participate only once during the recruitment period. The estimated duration of the study is six months for the primary outcome and 15 months for the secondary outcomes. Discussion: The outcomes of this trial have the potential to inform evidencebased adjustments in the management of ovarian stimulation protocols for oocyte donors. [ABSTRACT FROM AUTHOR]

• Post-trigger LH levels below 15 IU/L have been suggested to be predictive of poor ovarian response. • A prospective cohort in 224 oocyte donation cycles triggered by GnRH agonist, revealed that the suggested LH threshold of 15 IU/L is not associated with oocyte retrieval or maturation rates. Are circulating luteinizing hormone (LH) levels predictive of ovarian response in oocyte donors triggered with gonadotropin-releasing hormone (GnRH) agonists? A prospective cohort study with 224 oocyte donation cycles between 2021 and 2022 at a single center, examined the relationship between circulating luteinizing hormone (LH) levels and ovarian response. Oocyte donors underwent GnRH antagonist downregulation followed by GnRH agonist trigger. LH, estradiol, and progesterone levels were measured on day one of stimulation, trigger-day and 12 h post-trigger. Oocyte retrieval and maturity rates were analyzed using univariate and multivariate analyses, and the correlation between post-trigger LH levels and outcomes was assessed by Pearson's correlation test. A significance level of p < 0.05 was used. Mean age was 26 ± 4.3 years, mean body mass index (BMI, kg/m2) was 22.6 ± 3.2 and mean antral follicle count (AFC) was 21.7 ± 8.2. Post-trigger LH levels averaged 51.3 IU/L (SD 34.8), and oocyte retrieval rate and maturity rates were 112,7% (+/-48,1%) and 77,8% (+/- 17,2%), respectively. No significant differences were found in these outcomes for donors with post-trigger LH values below and above 15 IU/L (Mann Whitney's p > 0.05). However, exploratory analyses revealed that post-trigger LH values < 22 IU/L and basal LH levels < 4 IU/L were associated with significantly lower oocyte retrieval rate (90 % vs 110 %, p = 0.019 and 100 % vs 110 %, p = 0.019, respectively). This study, a first in exclusively focusing on oocyte donors, did not support the previously reported LH value of 15 IU/L as predictive of suboptimal ovarian response. ClinicalTrials.gov Identifier: NCT05109403. [ABSTRACT FROM AUTHOR]

Background: Induced endometrial injury is a technique described that have positive impact on implantation. The aim ofthis study was to investigate whether hysteroscopic endometrial fundal incision (EFI) in oocyte recipients before embryotransfer increases pregnancy and live birth rates or not.Materials and Methods: A prospective study was conducted between 2014 and 2019 at an in vitro fertilization (IVF) unitin Greece. As part of the protocol, hysteroscopy and EFI were offered to all the egg recipients and the outcomes comparedwith those from an older cohort from the same Unit not undergoing hysteroscopy.Results: In total, 332 egg recipients participated in the study; 114 of them underwent EFI prior to embryo transfer. Bothgroups were similar in terms of age, years of infertility, duration of hormone replacement treatment (HRT) and numberof blastocysts transferred. In the EFI group, minor anomalies were detected and treated in 6.1% (n=7) of the participants.Moreover, pregnancy test was positive in 73.7% of the women in the hysteroscopy group compared to 57.8% in the nonhysteroscopygroup (P=0.004). Live birth rate was also higher (56.1 vs. 42.2%, P=0.016) in the EFI group compared tothe non-hysteroscopy one.Conclusion: Apart from the obvious benefit of recognizing obscured anomalies, requiring surgical correction, it appearsthat in oocyte recipients prior to embryo transfer, EFI might improve uterine receptivity and reproductive outcomes.

Couples are increasingly using assisted reproduction technology (ART) to facilitate having children. This raises the question of whether using ART leads to the same health outcomes as spontaneous conception. One of the major health outcome factors concerns the weight of the newborn. Many foreign studies have proved that newborns conceived via ART evince lower birth weights than newborns that were conceived spontaneously. The purpose of this study is to determine whether the risk of low birth weight differs according to the ART method selected (in-vitro fertilisation with fresh embryo transfer, frozen embryo transfer, oocyte receipt), and which of these methods is associated with the lowest risk of a low birth weight. Anonymised individual data on all deliveries that took place in Czechia between 2013 and 2018 was used for the analysis. The dataset was obtained from the National Registry of Reproduction Health (administered by IHIS CR). The binary logistic regression revealed that concerning many of the covariates controlled, women who underwent IVF had a higher risk (30 %) of giving birth to a child with a low birth weight than women who received frozen embryo transfer treatment (CI 1.15-1.48). Women who underwent oocyte receipt treatment were found to have an even higher (52 %, CI 1.17-1.97) risk than women who received frozen embryo transfer. This study supports existing international knowledge of the specifics of the health outcomes of women who use ART (Tab. 1, Fig. 3, Ref. 33). [ABSTRACT FROM AUTHOR]

To assess whether high body mass index (BMI) in either oocyte donors or recipients is associated with poorer outcomes after the first single blastocyst transfer. Retrospective study including 1,394 first blastocyst single embryo transfers (SETs) conducted by 1,394 recipients during oocyte donation cycles with the gametes retrieved from 1,394 women (January 2019–July 2021). Four BMI clusters were defined for both donors and recipients (underweight: <18.5 kg; normal weight: 18.5–24.9 kg; overweight: 25–29.9 kg; and obese: ≥30 kg). Network of private IVF centers. A total of 1,394 recipients aged 42.4 ± 4.0 and with a BMI of 23.2 ± 3.8 kg/m2, and 1,394 donors aged 26.1 ± 4.2 and with a BMI of 21.9 ± 2.5 kg/m2. All oocytes were vitrified at 2 egg banks and warmed at 8 in vitro fertilization clinics that were part of the same network. Intracytoplasmic sperm injection, blastocyst culture, and either fresh or vitrified-warmed SETs were conducted. Putative confounders were investigated, and the data were adjusted through regression analyses. The primary outcome was the live birth rate (LBR) per SET according to donors' and/or recipients' BMI. The main secondary outcome was the miscarriage rate (<22 gestational weeks) per clinical pregnancy. The LBR per blastocyst SET showed no significant association with donors' BMI. Regarding recipients' BMI, instead, the multivariate odds ratio was significant in obese vs. normal-weight recipients (0.58, 95% confidence interval, 0.37–0.91). The miscarriage rate per clinical pregnancy was also significantly associated with recipients' obesity, with a multivariate odds ratio of 2.31 (95% confidence interval, 1.18–4.51) vs. normal-weight patients. A generalized additive model method was used to represent the relationship between predicted LBR or miscarriage rates and donors' or recipients' BMI; it pictured a scenario where the former outcome moderately but continuously decreases with increasing recipients' BMI to then sharply decline in the BMI range of 25–35 kg/m2. The miscarriage rate, instead, increases almost linearly with respect to both donors' and recipients' increasing BMI. Obesity mostly affects the uterus, especially because of higher miscarriage rates. Yet, poorer outcomes can be appreciated already with a BMI of 25 kg/m2 in both oocyte donors and recipients. Finer markers of nutritional homeostasis are therefore desirable; recipients should be counseled about poorer expected outcomes in cases of overweight and obesity; and oocyte banks should avoid assigning oocytes from overweight donors to overweight and obese recipients. [ABSTRACT FROM AUTHOR]

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Background: Induced endometrial injury is a technique described that have positive impact on implantation. The aim of this study was to investigate whether hysteroscopic endometrial fundal incision (EFI) in oocyte recipients before embryo transfer increases pregnancy and live birth rates or not. Materials and Methods: A prospective study was conducted between 2014 and 2019 at an in vitro fertilization (IVF) unit in Greece. As part of the protocol, hysteroscopy and EFI were offered to all the egg recipients and the outcomes compared with those from an older cohort from the same Unit not undergoing hysteroscopy. Results: In total, 332 egg recipients participated in the study; 114 of them underwent EFI prior to embryo transfer. Both groups were similar in terms of age, years of infertility, duration of hormone replacement treatment (HRT) and number of blastocysts transferred. In the EFI group, minor anomalies were detected and treated in 6.1% (n=7) of the participants. Moreover, pregnancy test was positive in 73.7% of the women in the hysteroscopy group compared to 57.8% in the nonhysteroscopy group (P=0.004). Live birth rate was also higher (56.1 vs. 42.2%, P=0.016) in the EFI group compared to the non-hysteroscopy one. Conclusion: Apart from the obvious benefit of recognizing obscured anomalies, requiring surgical correction, it appears that in oocyte recipients prior to embryo transfer, EFI might improve uterine receptivity and reproductive outcomes. [ABSTRACT FROM AUTHOR]

The issue of genealogy is a socio-political phenomenon that has maintained its importance for centuries. According to Islam, it can be established between a woman and her child through birth and breastfeeding. This study aims to discuss the feasibility of a genealogical relationship to be established through breastfeeding, apart from the act of giving birth, in terms of assisted reproductive technologies (ART) and surrogate mothers/oocytesperm donation. The study utilized secondary data and different approaches to childbirth and breastfeeding were examined. Through these approaches, the feasibility of parents who have children through ART to establish a kinship relationship with their children was investigated. According to civil law, the woman who gives birth is the mother; based on this assumption, surrogate mothers have an intimate relationship with the child they give birth to. In addition to this relationship, the legitimacy of the relationship between the woman who has a child through surrogacy and the child poses a problem from legal and religious perspectives. However, since breastfeeding will lead to the establishment of a different lineage, it is concluded that this act can be offered as an alternative to parents who have a child through ART and have legitimacy problems. Although Islamic circles insist on differentiating between breastfeeding and surrogacy, breastfeeding is thought to provide the necessary legitimacy in society. [ABSTRACT FROM AUTHOR]

The research question 'How do fertility professionals worldwide perceive the issue of payment for egg donation and does this view change under different circumstances?' was addressed. A worldwide online survey was conducted between January and March 2023, focusing on the views of fertility providers concerning egg donor payments. From the 3,790 IVF-Worldwide.com members invited, 532 (14%) from 88 countries responded. The majority of participants, primarily from Europe (38.9%) and Asia (20.1%), were fertility specialists, embryologists, and fertility nurses. Most (60.3%) favoured regulated donor compensation, with only 13% advocating for unrestricted amounts. Compensation opposition (22.4%) was often rooted in concerns about donors' best interests. When considering egg donation from low-resource to high-resource countries, 38.5% were opposed. When asked about compensating women who underwent elective, non-medical egg freezing should they choose to donate their unused oocytes, most responders supported it to some degree, with only 28.4% opposing any compensation. The survey revealed that a significant majority of fertility professionals worldwide are supportive of some form of compensation for egg donors. However, perspectives diverge depending on the specific scenario and the country of practice. [ABSTRACT FROM AUTHOR]

IntroductionProgesterone-primed cycles effectively suppress the pituitary LH surge during ovarian stimulation in oocyte donors and in the infertile population. Particularly in oocyte donors, the use of synthetic progesterone (progestins) has been explored in prospective clinical trials, showing mixed results. This trial was designed to determine whether the use of micronized natural progesterone is as effective as the GnRH-antagonist protocol in terms of the number of mature oocytes (MII) retrieved in oocyte donation cycles as a primary outcome, and it also aims to explore the corresponding results in recipients as a secondary outcome.MethodsWe propose a prospective, open-label, non-inferiority clinical trial to compare a novel approach for oocyte donors with a control group, which follows the standard ovarian stimulation protocol used in our institution. A total of 150 donors (75 in each group) will be recruited and randomized using a computer algorithm. After obtaining informed consent, participants will be randomly assigned to one of two ovarian stimulation protocols: either the standard GnRH antagonist or the oral micronized natural progesterone protocol. Both groups will receive recombinant gonadotropins tailored to their antral follicle count and prior donation experiences, if any. The primary outcome is the number of mature metaphase II (MII) oocytes. Secondary measures include treatment duration, pregnancy outcomes in recipients, as well as the economic cost per MII oocyte obtained in each treatment regimen. Analyses for the primary outcome will be conducted in both the intention-to-treat (ITT) and per-protocol (PP) populations. Each donor can participate only once during the recruitment period. The estimated duration of the study is six months for the primary outcome and 15 months for the secondary outcomes.DiscussionThe outcomes of this trial have the potential to inform evidence-based adjustments in the management of ovarian stimulation protocols for oocyte donors.Clinical trial registrationClinicalTrials.gov, identifier, NCT05954962.

Background/Objectives: Although high live birth rates are associated with oocyte donation (OD), these pregnancies are associated with increased obstetric and perinatal risks. This study evaluated maternal and neonatal risks after OD compared to in vitro fertilization (IVF) with autologous oocytes, and to spontaneous pregnancies (SPs), among singletons, twins and triplets. Methods: A retrospective, large, population-based cohort study was conducted based on electronic data from Maccabi Healthcare Services. A total of 469,134 pregnancies were grouped according to the mode of conception. The main outcome measures were preterm birth (PTB), small for gestational age (SGA) and pregnancy-induced hypertension (PIH). The data were analyzed separately for singletons, twins and triplets. Results: The mean maternal age was older in the OD group compared with the IVF and SP groups (singletons: 39.7 ± 4.1 vs. 34.5 ± 4.8 and 31.7 ± 5.3 years; twins: 39 ± 4.6 vs. 32.6 ± 4.4 and 31.2 ± 5.1 years; and triplets: 35.6 ± 2.5 vs. 32 ± 3.9 and 29.7 ± 5 years). The mean gestational age was younger among the OD group compared to the SP group (singletons: 37.5 ± 3 vs. 39 ± 2 p = 0.001, and twins: 35 ± 3 vs. 36 ± 2.5 p = 0.001). Higher rates of PTB < 37, PTB < 34 and PTB < 28 weeks were found among OD singletons. Multivariable logistic regressions for PTB < 37 weeks and SGA in singletons demonstrated that OD and IVF are significant risk factors (OR = 4.1, 95%CI = 3.3–5.2; OR = 4.3, 95%CI = 4.1–4.6; OR = 1.9, 95%CI = 1.3–2.6; OR = 2.2, 95%CI = 2–2.4, respectively). Significantly higher rates of PIH were demonstrated among the OD vs. IVF and SP groups in singleton (4.3% vs. 1.7% and 0.7%) and in twin pregnancies (7.5% vs. 4.3% and 3.4%). Conclusions: OD pregnancies are at increased risk for PTB, SGA and PIH.

Abstract Background Oocyte donation is a complex and multifaceted behavior in women. Due to the acute deficiency of donated oocytes, it is necessary to identify the factors affecting the desire to donate. Planned behavior theory is a suitable model for explaining and predicting behavior in many behavioral domains. The aim of this study was to predict oocyte donation intention using the theory of planned behavior. Methods This cross-sectional study was performed on 556 women who were covered by the comprehensive health service centers in Gonabad and Neyshabour cities in 2020. Sampling was performed by the two-step method in Gonabad city and by the convenience sampling method in Neyshabour city. Data were collected online using researcher-made questionnaires included oocyte donation awareness questionnaire and oocyte donation intention questionnaire (based on the TPB constructs). The validity of the questionnaires was confirmed by face and content validity and its reliability was confirmed by Cronbach's alpha coefficient. Data were analyzed in SPSS software (version 16) using hierarchical linear regression. The statistical significance was considered as P

BACKGROUND Modern lifestyle has led to an increase in the age at conception. Advanced age is one of the critical risk factors for female-related infertility. It is well known that maternal age positively correlates with the deterioration of oocyte quality and chromosomal abnormalities in oocytes and embryos. The effect of age on endometrial function may be an equally important factor influencing implantation rate, pregnancy rate, and overall female fertility. However, there are only a few published studies on this topic, suggesting that this area has been under-explored. Improving our knowledge of endometrial aging from the biological (cellular, molecular, histological) and clinical perspectives would broaden our understanding of the risks of age-related female infertility. OBJECTIVE AND RATIONALE The objective of this narrative review is to critically evaluate the existing literature on endometrial aging with a focus on synthesizing the evidence for the impact of endometrial aging on conception and pregnancy success. This would provide insights into existing gaps in the clinical application of research findings and promote the development of treatment options in this field. SEARCH METHODS The review was prepared using PubMed (Medline) until February 2023 with the keywords such as 'endometrial aging', 'receptivity', 'decidualization', 'hormone', 'senescence', 'cellular', 'molecular', 'methylation', 'biological age', 'epigenetic', 'oocyte recipient', 'oocyte donation', 'embryo transfer', and 'pregnancy rate'. Articles in a language other than English were excluded. OUTCOMES In the aging endometrium, alterations occur at the molecular, cellular, and histological levels suggesting that aging has a negative effect on endometrial biology and may impair endometrial receptivity. Additionally, advanced age influences cellular senescence, which plays an important role during the initial phase of implantation and is a major obstacle in the development of suitable senolytic agents for endometrial aging. Aging is also accountable for chronic conditions associated with inflammaging, which eventually can lead to increased pro-inflammation and tissue fibrosis. Furthermore, advanced age influences epigenetic regulation in the endometrium, thus altering the relation between its epigenetic and chronological age. The studies in oocyte donation cycles to determine the effect of age on endometrial receptivity with respect to the rates of implantation, clinical pregnancy, miscarriage, and live birth have revealed contradictory inferences indicating the need for future research on the mechanisms and corresponding causal effects of women's age on endometrial receptivity. WIDER IMPLICATIONS Increasing age can be accountable for female infertility and IVF failures. Based on the complied observations and synthesized conclusions in this review, advanced age has been shown to have a negative impact on endometrial functioning. This information can provide recommendations for future research focusing on molecular mechanisms of age-related cellular senescence, cellular composition, and transcriptomic changes in relation to endometrial aging. Additionally, further prospective research is needed to explore newly emerging therapeutic options, such as the senolytic agents that can target endometrial aging without affecting decidualization. Moreover, clinical trial protocols, focusing on oocyte donation cycles, would be beneficial in understanding the direct clinical implications of endometrial aging on pregnancy outcomes. [ABSTRACT FROM AUTHOR]

This multicenter retrospective cohort study assesses the effect of high paternal DNA fragmentation on the well-being of the woman during pregnancy and the health of the newborn delivered. It was performed with clinical data from 488 couples who had a delivery of at least one newborn between January 2000 and March 2019 (243 used autologous oocytes and 245 utilized donated oocytes). Couples were categorized according to sperm DNA fragmentation (SDF) level as ≤15% or >15%, measured by TUNEL assay. Pregnancy, delivery, and neonatal outcomes were assessed. In singleton pregnancies from autologous cycles, a higher but non-significant incidence of pre-eclampsia, threatened preterm labor, and premature rupture of membranes was found in pregnant women from the >15%SDF group. Additionally, a higher proportion of children were born with low birth weight, although the difference was not statistically significant. After adjusting for potential confounders, these couples had lower odds of having a female neonate (AOR = 0.35 (0.1–0.9), p = 0.04). Regarding couples using donor's oocytes, pregnancy and neonatal outcomes were comparable between groups, although the incidence of induced vaginal labor was significantly higher in the >15% SDF group (OR = 7.4 (1.2–46.7), p = 0.02). Adjusted analysis revealed no significant association of elevated SDF with adverse events. In multiple deliveries from cycles using both types of oocytes, the obstetric and neonatal outcomes were found to be similar between groups. In conclusion, the presence of an elevated SDF does not contribute to the occurrence of clinically relevant adverse maternal events during pregnancies, nor does it increase the risk of worse neonatal outcomes in newborns. Nevertheless, a higher SDF seems to be related to a higher ratio of male livebirths. [ABSTRACT FROM AUTHOR]

Oocyte donation (OD) pregnancy is a risk factor for pre-eclampsia (PE). Due to a higher extent of fetal-maternal human leukocyte antigens (HLA) mismatching in OD pregnancies compared to naturally conceived (NC) and in vitro fertilization (IVF) pregnancies, the immune response in OD placentas is probably divergent and affects clinical outcomes. We hypothesized that placental pathology varies among diverse pregnancy conditions and is related to fetal-maternal HLA incompatibility. Placental lesions were scored in four patient groups: OD-PE (n = 16), OD-healthy (n = 37), NC-PE (n = 45), and IVF-healthy (n = 17). All combinations were genotyped for HLA-A, -B, -C, -DR, and -DQ to calculate fetal-maternal HLA mismatches. Placentas showing chronic deciduitis with plasma cells were immunofluorescently stained with CD138 and the anti-inflammatory cytokine interleukin-10 (IL-10). The distribution and severity of placental lesions varied among groups. The OD-healthy group had the highest inflammation score and greatest extent of chronic deciduitis with plasma cells (p < 0.05). However, the majority of CD138+ plasma cells (90%) in OD-healthy group expressed IL-10, in contrast to the OD-PE group (58%). The OD-healthy group was separated into semi-allogeneic (≤5 HLA mismatches) and fully allogeneic (>5 mismatches) subgroups. The elevated inflammatory pathology score and chronic deciduitis with plasma cells were found more often in the HLA-class-I fully allogeneic OD-healthy group than the IVF-healthy group (p < 0.05). Placental inflammatory lesions are most often present in uncomplicated OD pregnancies. Immune cells that infiltrate these lesions might play an immunosuppressive role to protect OD pregnancies from complications when facing a higher extent of fetal-maternal HLA mismatching. • Placental lesions vary among different pregnancy conditions, including OD and PE. • Placental inflammatory lesions are most prevalent in healthy OD. • IL-10+ plasma cells prevail in chronic deciduitis of OD-healthy compared to OD-PE. • High extent of inflammation in OD-healthy is associated with HLA-I mismatching. [ABSTRACT FROM AUTHOR]

To evaluate live-birth rates per embryo transfer in patients with uterine Müllerian anomalies (UMAs). Secondary objectives were to compare reproductive outcomes between the normal uterus group, the different UMA types, and UMA subgroups with and without required surgery. This retrospective study compared two cohorts, one with UMAs and other with normal uteri of our oocyte donation program at 12 Instituto Valenciano De Infertilidad/Reproductive Medicine Associates University affiliated clinics from January 2000 to 2020. The oocyte donation reduces confounding because of differences in embryo quality. The primary outcome was the live-birth rate per embryo transfer. Secondary outcomes included the rates of implantation, clinical pregnancy, miscarriage, and ongoing pregnancy. We calculated odds ratios with 95% confidence intervals. Infertile women undergoing oocyte donation with UMAs. None. The rates of implantation, clinical pregnancy, miscarriage, ongoing pregnancy, and live birth. We analyzed 58,337 cycles of oocyte donation: 57,869 patients had no uterine malformation, and 468 women had UMAs. Compared with patients with normal uteri, patients with UMAs had lower rates of live births (36.67% [32.84–40.65] vs. 38.1% [95% confidence intervals {CI}: 37.82–38.42]) and ongoing pregnancy (39.74% [35.93–43.66] vs. 41.5% [41.24–41.83]). The miscarriage rate was higher in patients with UMAs (19.5% [16.55–22.85] vs. 16.6% [16.47–16.92]). Specifically, patients with a unicornuate uterus (n=29) had lower rates of implantation (24.07% [13.49–37.64] vs. 42.85% [95% CI: 42.6–43.09]), pregnancy (41.86% [27.01–57.87] vs. 59.51% [59.22–59.81]), ongoing pregnancy (16.67% [6.97–31.36] vs. 41.54% [41.24–41.83]), and live births (16.67% [6.97–31.36] vs. 38.12% [37.83–38.42]). In addition, patients with a partial septate uterus (n=91) had a higher miscarriage rate (26.50% [18.44–34.89] vs. 16.7% [16.47–16.92]). Compared with the normal uterus group, the live-birth rates were lower in the UMA without surgery group (33.09% [27.59–38.96] vs. 38.12% [37.83–38.42]). Among patients who received embryos derived from donated oocytes, live birth and ongoing pregnancy rates were lower in patients with UMAs compared with patients with normal uteri. A higher miscarriage rate was found in patients with UMAs. Patients with a unicornuate uterus had worse reproductive outcomes. Our results show that the uterus is less competent in patients with UMAs. This study was registered at clinicaltrial.gov (NCT04571671). [ABSTRACT FROM AUTHOR]

Oocyte donation (OD) has greatly improved over the last three decades, becoming a preferred practice of assisted reproductive technology (ART) for infertile women wishing for motherhood. Through OD, indeed, it has become possible to overcome the physiological limitation due to the ovarian reserve (OR) exhaustion as well as the poor gamete reliability which parallels the increasing age of women. However, despite the great scientific contribution related to the success of OD in the field of infertility, this practice seems to be associated with a higher rate of major risky events during pregnancy as recurrent miscarriage, infections and placental diseases including gestational hypertension, pre-eclampsia and post-partum hemorrhage, as well as several maternal–fetal complications due to gametes manipulation and immune system interaction. Here, we will revisit this questioned topic since a number of studies in the medical literature focus on the successful aspects of the OD procedure in terms of pregnancy rate without, however, neglecting the risks and complications potentially linked to external manipulation or heterologous implantation. [ABSTRACT FROM AUTHOR]

Objectives: This study aimed to assess if the indication for oocyte reception (OR) or embryo reception (ER) impacts the reproductive and obstetric outcomes by evaluating our experience at a tertiary fertility centre and by performing a literature review on this subject. Several previous studies have reported that, in contrast to other types of fertility treatment, the indication for OR/ER seems to have little impact on the outcomes. However, the compared indication groups vary considerably between these studies, and some data indicates worse outcomes in patients who developed premature ovarian insufficiency (POI) due to Turner syndrome or treatment with chemotherapy/radiotherapy. Design: A retrospective analysis of all cases of OR/ER at a tertiary fertility centre from 2001 until 2020 was conducted. We analysed 584 cycles from 194 individual patients. A literature review on the impact of indication on reproductive or obstetric outcomes of OR/ER was performed using the following databases: PubMed/MEDLINE, Embase, and the Cochrane Library. A total of 27 studies were included and analysed. Participants, Setting, Methods: For the retrospective analysis, patients were divided into three major indication groups: failure of autologous assisted reproductive technology, POI, and genetic disease carrier. To assess reproductive outcomes, we determined pregnancy rate, implantation rate, miscarriage rate, and live birth rate. For comparing obstetric outcomes, we reviewed the term of birth, mode of delivery, and birthweight. Outcomes were compared using Fisher's exact test, χ2 test, and one-way ANOVA utilizing the GraphPad tool. Results: There were no significant differences in reproductive and obstetric outcomes between the three major indication groups in our population, in line with the findings reported by existing literature. Data on impaired reproductive outcomes in patients with POI after chemotherapy/radiotherapy are conflicting. Obstetrically, these patients are at higher risk of preterm birth and possibly also low birthweight, especially after abdomino-pelvic or total body irradiation. For patients with POI due to Turner syndrome, most data suggest similar pregnancy rates but a higher rate of pregnancy loss, and obstetrically an increased risk of hypertensive disorders and caesarean section. Limitations: The small number of patients in the retrospective analysis resulted in low statistical power when evaluating differences between smaller subgroups. There were some missing data on the occurrence of complications during pregnancy. Our analysis covers a period of 20 years, during which several technological innovations have also been made. Conclusions: Our study shows that the important heterogeneity in couples treated with OR/ER does not significantly impact their reproductive or obstetric outcomes, except for POI due to Turner syndrome or treatment with chemotherapy/radiotherapy, where there seems to be an important uterine/endometrial component that cannot be entirely overcome by providing a healthy oocyte. [ABSTRACT FROM AUTHOR]

Background & Objective: Oocyte donation is an assisted reproductive technique. The infertile couples' demand for using this technique has increased in recent years. This study aimed to evaluate psychiatric disorders, personality characteristics and intelligence quotient among women who are candidates for oocyte donation. Materials & Methods: This was a cross-sectional study. Thirty-nine parous women were entered into the study. A psychiatrist interviewed participants regarding the psychiatric axis I disorders. Also, participants were asked to answer the Millon Clinical Multi axial Inventory (MCMI III) and Raven’s Standard and Progressive Matrices (RSPM). Results: The mean age of participants was 28.79 (SD = 4.1) years and it was 11.17 years (SD = 2.6) for education. The mean of donation frequency was 1.35 (SD =0.6). Twenty-one donors (53.8%) had only financial motivation and eleven (28.2%) had only altruist object. Twenty-eight (71.8%) women did not have any psychiatric axis I disorders while eight women (20.5%) had at least one disorder. Eleven participants (28.4%) suffered from at least one personality disorder. The mean intelligence quotient was 99.3 (SD =14.2). Conclusion: The results showed that oocyte donors might suffer from mental disorders and intelligence quotient problems irrespective of age, education, job status and motivation for donation. In conclusion, it seems that psychological assessment and help service is necessary for oocyte donors before any donation procedure. [ABSTRACT FROM AUTHOR]

Background: Oocyte donation is a complex and multifaceted behavior in women. Due to the acute deficiency of donated oocytes, it is necessary to identify the factors affecting the desire to donate. Planned behavior theory is a suitable model for explaining and predicting behavior in many behavioral domains. The aim of this study was to predict oocyte donation intention using the theory of planned behavior. Methods: This cross-sectional study was performed on 556 women who were covered by the comprehensive health service centers in Gonabad and Neyshabour cities in 2020. Sampling was performed by the two-step method in Gonabad city and by the convenience sampling method in Neyshabour city. Data were collected online using researcher-made questionnaires included oocyte donation awareness questionnaire and oocyte donation intention questionnaire (based on the TPB constructs). The validity of the questionnaires was confirmed by face and content validity and its reliability was confirmed by Cronbach's alpha coefficient. Data were analyzed in SPSS software (version 16) using hierarchical linear regression. The statistical significance was considered as P < 0.05. Results: The results showed that there was a significant positive correlation between the oocyte donation intention with all constructs of planned behavioral theory (P < 0.050). Planned behavior theory constructs explained 47% of the variance of oocyte donation intention. In addition, constructs of perceived power (β = 0.461), control beliefs (β = 0.154) and normative beliefs (β = 0.125) were the strongest predictors of oocyte donation intention, respectively. Conclusion: Planning and implementing educational courses according to the constructs of the theory of planned behavior can be a great step toward the elimination of oocyte deficiency and infertility problems. Also performing of intervention or training strategies in the field of oocyte donation requires the enhancement of social norms and perceived behavioral control in the population under study. [ABSTRACT FROM AUTHOR]

Background: In Brazil, donor anonymity is mandatory; however, the tendency of Brazilians towards the practice is unknown. In this study, an attempt was made to investigate whether couples undergoing assisted reproductive technology (ART) have a different perception of anonymous versus identity-release gamete donation than a target population in Brazil. Methods: This cross-sectional study was performed from September 1, 2020 to December 15, 2020. For that purpose, surveys through online platforms were conducted, including either patients undergoing ART (ART-group, n=400) or subjects interested in the theme (interested-group, n=100) randomized by age at a 1:4 ratio. The survey collected information on the participants’ attitudes towards anonymity of gamete donors, and answers were compared between the groups. Results: Most participants stated that the relationship between children and their parents would be affected by the child's knowledge of the origin of its conception. Most participants in the ART-group believed that the gamete donor’s identity should not be revealed to the child, while only half of the interested-group stated the same. Most of the participants stated that "the donor's identity should be revealed if the child questions its biological origin". "From birth" was the second most common response, while "when the child turns 18 years old" and "sometime during teenage years" were less common answers. Conclusion: The attitudes of ART patients about anonymity are conservative, with most participants believing that family relationships may be affected if the child is aware of the origin of his/her conception. These patients also believe that the identity of the gamete donor should not be revealed to the child. [ABSTRACT FROM AUTHOR]

Objective: To evaluate the effect of a follow‐up counseling program on oocyte donors' mental health. Methods: A randomized controlled field trial conducted on 72 Iranian women who volunteered for oocyte donation. The intervention was designed based on the qualitative section of the study and review of the literature, as face‐to‐face counseling, an Instagram page, an educational pamphlet, and a briefing session for service providers. Mental health was assessed using the DASS‐21 questionnaire in two stages before ovarian stimulation (T1) and ovum pick‐up (T2). Results: The scores of depression, anxiety, and stress after ovum pick‐up in the intervention group were significantly lower than in the control group. Besides, after ovum pick‐up, the satisfaction of participation in an assisted reproductive technique (P < 0.001) in the intervention group was significantly higher than the control group, respectively. In the intervention group, the mean scores of depression and stress were lower at T2 compared to T1 (P < 0.001). Conclusion: This study showed that the follow‐up counseling program could influence these oocyte donors' mental health during participation in assisted reproductive techniques. Designing these programs in the cultural context of each country is recommended. Trial Registration: Iranian Registry of Clinical Trials (IRCT20200617047811N1), Date of registration: 07/25/2020, Registry URL: https://www.irct.ir/trial/49196 Synopsis: Providing a follow‐up counseling program is effective in maintaining the mental health of oocyte donors during oocyte donation. [ABSTRACT FROM AUTHOR]

Purpose: This study aims to evaluate the opinion of university students about the identification or nonidentification of gamete donation and the probability of donation according to the different regimes. Methods: This was a cross-sectional observational study based on an online anonymous survey including questions about sociodemographic data, reasons for considering donations, information about the donation process and legislation, and their opinions about the different regimes and how they would influence donations. Results: In total, 1393 valid responses were obtained, with a mean age of 24.0 years (SD = 4.8), most of the respondents being female (68.5%), living in a relationship (56.7%), and without children (88.4%). The main reasons for considering donation would be altruism and monetary compensation. Overall, it was found that participants were poorly informed about the donation procedure and legislation. Students revealed preference for nonidentified donation, and they were less likely to donate in an open identity regime. Conclusion: Most university students consider themselves poorly informed about gamete donation, express a preference for nonidentified gamete donation, and would less likely donate on an open identity basis. Thus, an identified regime may be less attractive to potential donors and lead to a decrease in the availability of gamete donors. [ABSTRACT FROM AUTHOR]

Background: Given the significant changes in family formation through donation procedures, providing an optimal level of care that is responsive to the needs of mothers who get pregnant via oocyte donation is pivotal to improve their maternal role. Therefore, it is necessary to recognize the needs of oocyte donation mothers to address their specific needs. Objective: This study aimed to review the needs of women in their journey towards motherhood via oocyte donation. Materials and Methods: In this systematic review, which followed the updated Joanna Briggs Institute's methodological guidance for conducting a mixed methods systematic review, the quantitative observational and qualitative studies were searched through databases including PubMed, Web of Science, PsycINFO, the Cochran Library, and Google Scholar search engine. Letters to the editor, commentaries, magazine articles, articles without full text and abstracts presented in congresses were excluded. All English-language articles related to the needs of oocyte donation mothers, without time limitation, were reviewed. The eligible studies were critically appraised independently by 2 researchers. Results: 4649 records were identified from those 18 articles were finally included in the review. The needs of oocyte donation mothers comprised 8 categories: The need for special services in fertility clinics, the need to improve the quality of care, the need for emotional support and psychological consultation, information needs, the need for financial support, the need for disclosure counseling, educational needs, and the need for sociocultural and religious support. Conclusion: This review suggests various needs of oocyte donation mothers. The results can be used in carefully planning supportive programs for this vulnerable population. [ABSTRACT FROM AUTHOR]