Tournaye H

RESEARCH QUESTION: Are pregnancies in female same-sex couples at higher risk when using reception of oocytes from partner (ROPA) compared with intrauterine insemination (IUI)? DESIGN: A retrospective, single-centre, matched cohort study wa…

Children conceived through assisted reproductive technologies (ART) have an elevated risk of lower birthweight, yet the underlying cause remains unclear. Our study explores mitochondrial DNA (mtDNA) variants as contributors to birthweight d…

The study investigates whether a 3-day pretreatment course with a GnRH antagonist in the early follicular phase has an impact on the number of retrieved COCs in a GnRH antagonist stimulation protocol. This is a retrospective single center c…

Research questionDoes a frozen-embryo transfer in an artificially-prepared endometrium (FET-HRT) cycle yield similar clinical pregnancy rate with 7 days of oestrogen priming compared to 14 days?DesignThis is a single-centre, randomized, con…

PurposeTo report the case of a young woman diagnosed with Turner syndrome (TS) who achieved a live birth using her own oocytes that had been vitrified for fertility preservation.MethodsA 25-year-old woman with mosaic (45,X/46,XX) TS was ref…

PurposeDoes cell loss (CL) after vitrification and warming (V/W) of day 3 embryos have an impact on live birth rate (LBR) and neonatal outcomes?MethodThis retrospective analysis includes cleavage stage day 3 embryos vitrified/warmed between…

ObjectiveTo study the presence of viral RNA in the follicular fluid, cumulus cells, and endometrial tissue samples in SARS-CoV-2-positive women undergoing assisted reproductive technology (ART).DesignProspective, single-center, observationa…

Study questionDoes oocyte vitrification adversely affect the health of 2-year-old children compared with peers born after use of fresh oocytes in a donation programme?Summary answerThe growth and health of 2-year-old children born after ooc…

The prolonged lockdown of health services providing high-complexity fertility treatments -as currently recommended by many reproductive medicine entities- is detrimental for society as a whole, and infertility patients in particular. Global…

Study questionDoes In vitro maturation (IVM) of immature oocytes affect health, including growth at 2 years of age, in singletons born to mothers with polycystic ovary syndrome (PCOS)?Summary answerThis study of 92 singletons born after IVM…

Background: The need for endocrine monitoring in artificial cycles for frozen embryo transfer (FET) remains unclear and, more specifically, the value of the late-proliferative phase serum estradiol (E2) levels is with conflicting evidence i…

Despite the considerate progress to which assisted reproduction technology (ART) has been subject since 1978, some issues remain unresolved. Notably, the clinical management of patients with a poor ovarian response is still a challenge in e…

PurposeTo evaluate whether ICSI offers any benefit compared with IVF in different ovarian response categories in case of non-male factor infertility.MethodsThis is a retrospective multicenter analysis using individual patient data, conducte…

Research Question: What is the effect of gonadotropin-releasing hormone (GnRH)-agonist treatment on serum anti-Müllerian hormone (AMH)? Design: This prospective cohort study conducted in a tertiary university hospital comprised patients (n …

IntroductionA drawback of gonadotropin-releasing hormone (GnRH) antagonist protocols in in vitro fertilization (IVF) is that they have limited flexibility in cycle programming. This proof of concept study explored the efficacy of a single-d…

Since the introduction of gonadotropin-releasing hormone (GnRH) antagonists, an extensive amount of literature investigating the role of the downregulation protocols on pregnancy outcomes has been published. However, these studies were main…

Several infertile patients, who may even represent around 40% of the infertile cohort, may respond "suboptimally" (4-9 oocytes retrieved) following IVF, despite being predicted as normal responders. The aim of our longitudinal study was to …