PURPOSE: To evaluate whether the outcomes and characteristics of a first IVF/ICSI cycle are associated with embryological and clinical outcomes in a subsequent cycle performed within 2 years. METHODS: This retrospective single-center obser…
PURPOSE: To evaluate whether artificial endometrial preparation using hormone replacement therapy (HRT) influences clinical and neonatal outcomes compared with modified natural cycles (mNC) in single euploid vitrified-warmed blastocyst tran…
STUDY QUESTION: Does germinal vesicle (GV) rescue by IVM provide a meaningful clinical benefit in patients with unexpectedly low mature oocyte yield, and which patient profiles are most likely to benefit? SUMMARY ANSWER: Especially in pati…
PURPOSE: To identify treatment-related factors influencing low oocyte maturation rates in standard ovarian stimulation (OS) cycles and patients' candidates for clinical studies on rescue-IVM. METHODS: Retrospective study including retrieva…
AIMS: To evaluate DuoStim strategy across a decade from its clinical implementation in IVF by comparing embryological and clinical outcomes between the first and second ovarian stimulations (1st-OS and 2nd-OS) conducted within 30 days, focu…
PURPOSE: This study is to evaluate the effectiveness of a PPOS protocol in poor prognosis patients undergoing IVF with DuoStim and PGT-A versus the conventional protocol with GnRH antagonist. METHODS: Retrospective cohort study encompassin…
PURPOSE: To evaluate the performance of different embryo transfer (ET) operators in a strictly controlled scenario minimizing potential confounders. METHODS: This single-center retrospective cohort study analyzed vitrified-warmed single eu…
OBJECTIVE: To examine the association between semen parameters, assessed according to World Health Organization (WHO)-2021 criteria, and paternal body mass index (BMI) and age, with embryological and clinical outcomes in ICSI cycles involvi…
PURPOSE: Recent evidence showed that the phase between pronuclear fading and the first cleavage is a perilous bridge connecting the zygote and the embryo. Indeed, delay in the short interval between pronuclear breakdown (PNBD) and the first…
PURPOSE: The time at which embryo developmental velocity variations occur remains unknown. Therefore, we analysed the morphokinetic trajectory of human early fertilisation from the extrusion of the second polar body (PB2) to pronuclear brea…
PURPOSE: Obesity is increasingly at the center of modern international healthcare systems. This is a position statement of the Italian Society of Fertility and Sterility and Reproductive Medicine (SIFES-MR) aimed at evaluating the impact of…
BACKGROUND: Artificial Intelligence entails the application of computer algorithms to the huge and heterogeneous amount of morphodynamic data produced by Time-Lapse Technology. In this context, Machine Learning (ML) methods were developed i…
STUDY QUESTION: What are the clinical pregnancy and live birth rates in women who underwent up to two more euploid blastocyst transfers after three failures in the absence of another known factor that affects implantation? SUMMARY ANSWER: …
PURPOSE: This position statement by the Italian Society of Fertility and Sterility and Reproductive Medicine (SIFES-MR) aims to establish an optimal framework for fertility preservation outside the standard before oncological therapies. Key…
BACKGROUND: Folliculogenesis occurs in the highly dynamic environment of the ovary. Follicle cyclic recruitment, neo-angiogenesis, spatial displacement, follicle atresia and ovulation stand out as major events resulting from the interplay b…
STUDY QUESTION: How should recurrent implantation failure (RIF) in patients undergoing ART be defined and managed? SUMMARY ANSWER: This is the first ESHRE good practice recommendations paper providing a definition for RIF together with rec…
PURPOSE: To investigate whether high relative humidity conditions (HC), when using a time-lapse system (TLS) with sequential culture media, are beneficial to embryo culture, improving ongoing pregnancy rates. METHODS: We included patients …
BACKGROUND: Infertility, which is defined as the inability to conceive after at least 12 months of regular unprotected sexual intercourses, affects about 15-20% of couples worldwide and a male factor is involved in about half of the cases. …
PURPOSE: An impact of different gonadotrophins selection for ovarian stimulation (OS) on oocyte competence has yet to be defined. In this study, we asked whether an association exists between OS protocol and euploid blastocyst rate (EBR) pe…
The gut microbiota (GM) is a complex and dynamic population of microorganisms living in the human gastrointestinal tract that play an important role in human health and diseases. Recent evidence suggests a strong direct or indirect correlat…
Environmental toxicants (ETs) are an exogenous chemical group diffused in the environment that contaminate food, water, air and soil, and through the food chain, they bioaccumulate into the organisms. In mammals, the exposure to ETs can aff…
Increasing evidence on the significance of nutrition in reproduction is emerging from both animal and human studies, suggesting a mutual association between nutrition and female fertility. Different "fertile" dietary patterns have been stud…
PURPOSE: Our primary objective was to assess whether immediately undergoing a second stimulation in the same ovarian cycle (DuoStim) for advanced-maternal-age and/or poor-ovarian-reserve (AMA/POR) patients obtaining ≤ 3 blastocysts for prei…
STUDY QUESTION: What is the global variability in recurrent implantation failure (RIF) definition, investigation and therapy, currently offered to patients undergoing IVF? SUMAMRY ANSWER: Definitions, diagnostic investigations and treatmen…
OBJECTIVE: To evaluate the true impact of endometriosis on oocytes' competence defined as blastulation, euploidy and implantation rates. DESIGN: Retrospective multicenter case-control study involving infertile couples undergoing ICSI with …