Human reproduction open

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…

STUDY QUESTION: What are the updates for the recommended management of women with recurrent pregnancy loss (RPL) based on the best available evidence in the literature from 2017 to 2022? SUMMARY ANSWER: The guideline development group (GDG…

STUDY QUESTION: Do extracellular vesicles (EVs) from human Fallopian tubes exert an influence on early embryo development in vitro? SUMMARY ANSWER: Human Fallopian tube EVs carrying miRNAs increase murine embryo viability in vitro. WHAT I…

Although a wealth of data has been published regarding fertility preservation (FP) in women with malignant diseases who receive gonadotoxic treatment, the role of FP in non-malignant conditions has been studied to a much lesser extent. Thes…

STUDY QUESTION: Do low levels of anti-Müllerian hormone (AMH) or antral follicle count (AFC) properly predict miscarriage in young women conceiving with ART? SUMMARY ANSWER: Low ovarian reserve, as indicated by AMH or AFC, is not associate…

STUDY QUESTION: Does application of an unbiased method for analysis of magnetic resonance (MR) images reveal any effect on uterine or fibroid volume from treatment of heavy menstrual bleeding (HMB) with three 12-week courses of the selectiv…

STUDY QUESTION: Is it possible to reduce the cost of GnRH agonist treatment for endometriosis by using non-standard dosing regimens? SUMMARY ANSWER: An extended-interval dosing regimen of a 3.75 mg depot formulation of triptorelin injected…

STUDY QUESTION: Does cancer itself, before any gonadotoxic treatment, affect ovarian function in reproductive-aged patients? SUMMARY ANSWER: Our study revealed that women with cancer may have decreased ovarian reserve markers even before c…

STUDY QUESTION: What are the factors influencing the occurrence of monozygotic (MZ) twins in offspring conceived by assisted reproductive technology (ART)? SUMMARY ANSWER: Parental ages, the transfer of fresh versus frozen embryos, and the…

STUDY QUESTION: Do small and asymptomatic intramural and subserosal uterine fibroids affect female fertility? SUMMARY ANSWER: Small and asymptomatic fibroids that do not encroach the endometrial cavity appear to not markedly affect female …

STUDY QUESTION: What is the role of iron in the pathophysiology of endometriosis? SUMMARY ANSWER: Iron excess is demonstrated wherever endometriotic tissues are found and is associated with oxidative stress, an inflammatory micro-environme…

STUDY QUESTION: How does nucleus status at the two-cell stage predict blastocysts formation and clinical outcome after single blastocyst transfer? SUMMARY ANSWER: Binucleated embryos at the two-cell stage (2BI) show higher rates of good qu…

STUDY QUESTION: Does sexual intercourse enhance the cycle fecundability in women without known subfertility? SUMMARY ANSWER: Sexual intercourse (regardless of timing during the cycle) was associated with cycle characteristics suggesting hi…

Heavy menstrual bleeding (HMB) has an estimated prevalence of 18-32% but is known to be under-reported due to poor recognition and estimation of menstrual blood loss (MBL). HMB can negatively impact quality of life, affecting social interac…

STUDY QUESTION: What was the effect of the coronavirus disease 2019 (COVID-19) pandemic on healthcare and quality of life in those suffering from endometriosis? SUMMARY ANSWER: Our study reveals a clear correlation between the deterioratio…

STUDY QUESTION: Does adjuvant letrozole in ovarian stimulation for IVF decrease the uterine peristalsis frequency (UPF) prior to fresh embryo transfer (ET)? SUMMARY ANSWER: Adjuvant letrozole in ovarian stimulation for IVF does not reduce …

STUDY QUESTION: Does endometriosis affect live birth following donor oocyte recipient versus autologous IVF? SUMMARY ANSWER: There was no significant difference in the live birth rate (LBR) in women with endometriosis undergoing donor oocy…

STUDY QUESTION: Which classification system for endometriosis do clinicians use most frequently, and why? SUMMARY ANSWER: Even with a high uptake of the three existing endometriosis classification systems, most clinicians managing endometr…

STUDY QUESTION: How should endometriosis be diagnosed and managed based on the best available evidence from published literature? SUMMARY ANSWER: The current guideline provides 109 recommendations on diagnosis, treatments for pain and infe…

BACKGROUND: Ultrasound-guided embryo transfer (US-GET) is a widely performed procedure, but standards for the best practice are not available. OBJECTIVE AND RATIONALE: This document aims to provide an overview of technical aspects of US-GE…

STUDY QUESTION: Which genes regulate receptivity in the epithelial and stromal cellular compartments of the human endometrium, and which molecules are interacting in the implantation process between the blastocyst and the endometrial cells?…

STUDY QUESTION: Does the endometrial preparation protocol (artificial cycle (AC) vs natural cycle (NC) vs stimulated cycle (SC)) impact the risk of early pregnancy loss and live birth rate after frozen/thawed embryo transfer (FET)? SUMMARY…

STUDY QUESTION: What is the feasibility of a prospective protocol to follow subfertile couples being treated with natural procreative technology for up to 3 years at multiple clinical sites? SUMMARY ANSWER: Overall, clinical sites had miss…

STUDY QUESTION: Is the cumulative live birth rate (CLBR) per oocyte collection cycle (OCC) comparable after cleavage-stage or blastocyst-stage transfer in combination with supernumerary blastocyst vitrification on Day 5 (D5) in patients wit…

BACKGROUND: Oocyte activation deficiency (OAD) is attributed to the majority of cases underlying failure of ICSI cycles, the standard treatment for male factor infertility. Oocyte activation encompasses a series of concerted events, trigger…