Gamete donation

RESEARCH QUESTION: Can artificial intelligence identify predictors of an increased Day 5 blastocyst utilization rate (D5BUR), which is one of the most informative key performance indicators in an IVF laboratory? DESIGN: This retrospective, multicentre study evaluated six variables for predicting D5BUR using an artificial neural network (ANN): number of metaphase II (MII) oocytes injected (intracytoplasmic sperm injection); use of autologous/donated gametes; maternal age at oocyte retrieval; sperm concentration; progressive sperm motility rate; and fertilization rate...

OBJECTIVE: Infertility is one of the most significant reproductive health issues addressed with medically assisted procreation. This study looked into a potential correlation between the number of mature oocytes harvested and donor biological characteristics in order to propose an anti-Müllerian hormone (AMH) cutoff level to optimize the selection of candidates for gamete donation. METHODS: The donors were healthy women included in the Public Gamete Bank between 2011 and 2021...

PURPOSE: To assess whether embryo transfer (ET) technique can influence the clinical pregnancy rate (CPR) and its correlation with the embryo transfer difficulty. DESIGN: This single center retrospective cohort analysis of fresh and frozen single blastocyst transfers performed between January 2016 and December 2021 included fresh and frozen single blastocyst transfers performed during the study timeframe. Direct technique was the only one used from January 2016 to September 2017...

The new version of the bioethics law adopted in 2021 is distinguished first and foremost by its openness. It legitimises access to medically assisted procreation for lesbian couples and single women. It allows young adults born through gamete donation to know their origins. It allows any woman to freeze her oocytes with a view to a subsequent pregnancy, without any medical condition. At the same time, the new law is characterised by its moderation. These new freedoms do not challenge the primacy of conjugal parenthood...

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...

Many if not most sperm donors in the early years of IVF donated under conditions of anonymity. There is, however, a growing awareness of the ethical cost of withholding identifying parental information from donor children. Today, anonymous donation is illegal in many jurisdictions, and some jurisdictions have gone as far as retrospectively invalidating contracts whereby donors were guaranteed anonymity. This article provides a critical evaluation of the ethics and legality of anonymous donation. We defend Australian and British legislation that has outlawed donor anonymity, and we argue for the establishment of a central registry that provides donor children with the ability to easily and reliably access identifying information about their donor parents...

STUDY QUESTION: How do adult offspring in planned lesbian-parent families feel about and relate to their donor (half) sibling(s) (DS)? SUMMARY ANSWER: A majority of offspring had found DS and maintained good ongoing relationships, and all offspring (regardless of whether a DS had been identified) were satisfied with their knowledge of and contact level with the DS. WHAT IS KNOWN ALREADY: The first generation of donor insemination offspring of intended lesbian-parent families is now in their 30s...

The new version of the bioethics law adopted in 2021 is distinguished first and foremost by its openness. It legitimises access to medically assisted procreation for lesbian couples and single women. It allows young adults born through gamete donation to know their origins. It allows any woman to freeze her oocytes with a view to a subsequent pregnancy, without any medical condition. At the same time, the new law is characterised by its moderation. These new freedoms do not challenge the primacy of conjugal parenthood...

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...

OBJECTIVE: This study aimed to create and develop a well-designed, theoretically driven, evidence-based, digital, decision Tool to Empower Parental Telling and Talking (TELL Tool) prototype. METHODS: This developmental study used an inclusive, systematic, and iterative process to formulate a prototype TELL Tool: the first digital decision aid for parents who have children 1 to 16 years of age and used donated gametes or embryos to establish their families. Recommendations from the International Patient Decision Aids Standards Collaboration and from experts in decision aid development, digital health interventions, design thinking, and instructional design guided the process...

STUDY QUESTION: Does a chemically defined maturation medium supplemented with FGF2, LIF, and IGF1 (FLI) improve in vitro maturation (IVM) of cumulus-oocyte complexes (COCs) obtained from children, adolescents, and young adults undergoing ovarian tissue cryopreservation (OTC)? SUMMARY ANSWER: Although FLI supplementation did not increase the incidence of oocyte meiotic maturation during human IVM, it significantly improved quality outcomes, including increased cumulus cell expansion and mitogen-activated protein kinase (MAPK) expression as well as enhanced transzonal projection retraction...

Internationally, there is considerable inconsistency in the recognition and regulation of children's genetic connections outside the family. In the context of gamete and embryo donation, challenges for regulation seem endless. In this paper, I review some of the paths that have been taken to manage children' being closely genetically related to people outside their families. I do so against the background of recognising the importance of children's interests as moral status holders. I look at recent qualitative research involving donor-conceived people and borrow their own words to make sense of a purported interest to know (of) their close genetic ties...

IMPORTANCE: Genetic testing of gamete donors is becoming increasingly comprehensive and now often includes expanded carrier screening. Some argue that testing has gone too far, while others propose that testing is not extensive enough. Thinking critically about how much genetic testing is appropriate for gamete donors is crucial for ensuring that market forces alone do not determine the level of testing that is performed. OBJECTIVE: The goal of this paper is to highlight contradictions in the current approach towards genetic testing of gamete donors and to suggest that we either embrace the value of preventing the birth of children with hereditary diseases, and do so in a logical and consistent manner, or consider reducing our level of genetic testing for gamete donors...

OBJECTIVE: To assess if high BMI in either oocyte donors or recipients is associated with poorer outcomes after first single blastocyst transfers. DESIGN: Retrospective study including 1394 first blastocyst single embryo transfers (SETs) conducted by 1394 recipients during oocyte donation cycles with the gametes retrieved from 1394 women (Jan2019-July2021). Four BMI clusters were defined for both donors and recipients (underweight: <18.5; normal weight: 18.5-24...

BACKGROUND: Infertility affects around 12% of couples, and this proportion has been gradually increasing. In this context, the global assisted reproductive technologies (ART) market shows significant expansion, hovering around USD 26 billion in 2019 and is expected to reach USD 45 billion by 2025. OBJECTIVES: We realized a scoping review of the ART market from academic publications, market reports, and specialized media news, to identify the main terms and characterize them into the main topics in the area...

RESEARCH QUESTION: What are mothers' disclosure intentions and practices from infancy to early childhood, and is perceived donor threat associated with disclosure in identity-release egg donation families when the children are aged 5 years? DESIGN: This longitudinal study included 73 heterosexual-couple families with infants born following IVF-egg donation at phase one, and 61 families with 5-year-old children at phase two. At both phases, mothers were interviewed about their disclosure intentions and practices...

It was a strong and long-standing demand of people born of gamete donation: to know who is the person who allowed them to come into the world. The French legislator seemed to take this need into account during the last revision of the bioethics law. But if the rules have already changed for donors, for whom anonymity becomes fixed-term, for individuals born from a donation, access to their origins is far from being guaranteed to this day.

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...

Regulations governing assisted reproduction control the degree to which gamete donation is legal and how people providing genetic material are selected and compensated. The United States and Spain are both global leaders in fertility treatment with donor oocytes. Yet both countries take different approaches to how egg donation is regulated. The US model reveals a hierarchically organized form of gendered eugenics. In Spain, the eugenic aspects of donor selection are more subtle. Drawing upon fieldwork in the United States and Spain, this article examines (1) how compensated egg donation operates under two regulatory settings, (2) the implications for egg donors as providers of bioproducts, and (3) how advances in oocyte vitrification enhances the commodity quality of human eggs...

Expanded carrier screening constitutes a new scientific tool able to detect conditions that can be treated immediately after birth or during pregnancy. Its implementation could affect both the prenatal period and assisted reproductive techniques. It is strongly beneficial as it provides much useful information to future parents concerning the medical status of their offspring. In addition, the definition of 'serious/severe', regulating preimplantation diagnosis, donor insemination, and even the definitions of prerequisites for abortion diseases, should be reformed including all clinically severe diseases...