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Showing 1-16 of 16 trials
NCT03859921
This randomised double-blinded controlled trial aims to compare the live birth rate in natural FET cycles with and without oral dydrogesterone as luteal phase support. The hypothesis is that the use of oral dydrogesterone will increase the live birth rate of natural cycle FET.
NCT05896709
During assisted reproductive technology treatment, embryo selection is an important process that may affect the clinical pregnancy rate. Many assisted reproductive technology units over the world have tried different approaches to increase the clinical pregnancy rate. Conventionally, the morphology of the embryo is assessed by the embryologist with naked eyes only. Nowadays, artificial intelligence (AI) has been used to assist in morphological assessment of the embryo. Our pilot study showed that the AI-enhanced morphokinetic (MK) analysis increased the accuracy in embryo selection by \~9%, while the detection rate for abnormal chromosomes in embryo has also been increased by Raman spectroscopy (RS) analysis. The combined MK-RS analysis will be able to complete embryo assessment within 5-6 days after fertilization. This method needs shorter time and is at lower cost when compared to invasive preimplantation genetic testing for aneuploidies (PGT-A). In this study, we have combined the following non-invasive techniques to assist in embryo screening. 1. Using time-lapse imaging (i.e. images of embryo being taken every 10 minutes inside the incubator) with AI)-enhanced MK analysis to assess the entire morphological changes of the embryo. 2. As the embryo releases metabolites during its growth, the spent culture medium will be collected after culture of the embryo and then be used for RS analysis, which is a kind of metabolomics-based non-invasive PGT-A, for screening chromosomal abnormalities of the embryo. This study will include two phases. In Phase I, it is a retrospective part. We will collect data to train the convolutional neural network (CNN)-enhanced MK with RS method on embryo selection, leading to the integrated approach (MK-RS). In Phase II, it is a randomized controlled trial and participants will be randomised into 2 groups. For the experimental group, embryo selection will be based on the MK-RS method, whereas embryo selection for the control group will rely on the traditional embryo assessment results alone. Then we will assess the clinical pregnancy rate and evaluate the efficacy of our approach finally. Patients who receive in vitro fertilisation (IVF)/ intracytoplasmic sperm injection (ICSI) treatment from The Assisted Reproductive Technology (ART) Unit of The Chinese University of Hong Kong, Prince of Wales Hospital will be recruited.
NCT06795568
The goal of this observational study is to investigate integrative fertility awareness and its impact on assisted reproductive techniques (ART) in Hungary. It analyzes fertility awareness, health-movement behavior, physical literacy, dietary patterns, psycho-social distress, socio-demographic parameters, and stress biomarkers across four fertility centers. The study employs a mixed-method approach. The research aims to review and analyze the factors of integrative fertility awareness on the course and outcome measures of assisted reproductive techniques (ART) at different fertility centers in Hungary in a mixed-method study.
NCT04064840
The objectives of this study are to compare the efficacy of the dual trigger group vs the hCG trigger group on the live birth rate in women undergoing IVF and the efficacy of the agonist in LP group vs the placebo group on the live birth rate in women undergoing FET.
NCT05876234
To evaluate a 5 ng/ml serum progesterone (P4) threshold policy for the addition of subcutaneous (SC) P4 in artificially prepared frozen embryo transfer cycles treated with vaginal P4. We assess whether the addition of SC P4 rescues cycles with serum P4 \<5 ng/ml and we study the impact of not supplementing cycles with serum P4 \>5 ng/ml by comparing them with serum P4 cycles above the conventionally proposed cut-off of 10 ng/ml.
NCT04538560
This study intends to randomly group the patients with advanced maternal age and poor ovarian response, and the study group will undergo polar body biopsy, and the next-generation sequencing(NGS) technology will be used to evaluate the polar body euploidy and then predict the euploidy of the oocyte. Embryo transfer priority according to the NGS test results and morphological scores. In the control group undergo routine culture and the transfer priority is determined according to the morphological score only. The transfer of frozen embryos at the cleavage or blastocyst stage was permitted. Cumulative live birth rate, miscarriage rate and time required to obtain a live birth up to two ovulatory cycles in a year.
NCT02748278
IVF is a well-established method to treat various causes of infertility. Some studies have suggested that ethnicity affects the success of IVF. This is a prospective study involving two tertiary IVF units in Hong Kong and Australia. The IVF outcome between Chinese and Caucasians will be compared.
NCT02570386
The objective of the present randomized controlled study is to compare clinical effectiveness and safety of freezing all embryos followed by frozen-thawed embryo transfer (FET) compared to fresh embryo transfer, in women undergoing IVF treatment.
NCT02093442
Endometrial injury performed in a cycle preceding the one for embryo transfer is associated with an increased implantation and pregnancy rate when carried out during the month preceding that of ovulation induction and fresh embryo transfer. However, there is no evidence about the effect of this intervention on the transfer of cryopreserved embryos.
NCT02469805
Four hundred and fifty women with mild male factor infertility will be divided into 3 equal groups using computer generated random numbers: Group 1 will have up to 4 stimulated IUI cycles, group 2 will have up to 4 unstimulated cycles, women who do not become pregnant after the 4 cycles in groups 1 and 2 will be advised to have regular intercourse at the expected time of ovulation. Group 3 will be the control group will be advised to have regular sexual intercourse at the time of ovulation for 6 months
NCT01842178
This study is designed to evaluate the potential benefit in pregnancy rates produced by an endometrial scratching made in an IVF cycle prior to embryo transfer in patients with donated oocytes.
NCT01786252
Worldwide, 1 in 12 couples experience difficulty in getting pregnant and seek the help of assisted reproductive technologies (ART) such as in vitro fertilization (IVF-egg is fertilized by sperm outside the body), ovarian stimulation (medications are used to stimulate egg development) and intra-cytoplasmic injection (ICSI-single sperm is injected directly into the egg). Regardless of the ART procedure being performed, the newly fertilized embryo must still implant into the mothers endometrium (inner lining of uterus). This implantation process in humans is surprisingly inefficient and accounts for up to 50% of ART failures. Intrauterine infusion of hCG prior to embryo transfer has recently been shown to increase pregnancy rates but the cellular mechanism for this increase is unknown. Successful implantation requires the newly fertilized embryo and the endometrium develop in a synchronized manner. This coordinated development is accomplished, in part, by proteins secreted by the embryo which circulate throughout the maternal bloodstream and alert the maternal body organs (i.e. ovary, endometrium, breast, ect) that fertilization has occurred. One of the earliest of these secreted proteins is human chorionic gonadotropin (hCG), which is the molecule detected in over-the-counter pregnancy tests. From previous studies, we know that hCG production by the embryo alerts the ovary to continue producing progesterone, a hormone required for pregnancy. However, very little is known about the direct effect of hCG on the endometrium during early pregnancy in humans. Using animal models, hCG has been shown to induce specific changes in the endometrium, suggesting that embryo-derived hCG may be "priming" the endometrium in anticipation of implantation. The goal of this research study is to examine the direct effect of hCG on the human endometrium and see if this "priming effect" is also present in humans. Findings from this research may reveal whether pre-treatment with hCG can enhance ART outcomes, especially pregnancy rates.
NCT02647424
Polycystic ovary syndrome (PCOS) is one of the most common endocrinopathies, affecting 5% to 10% of women of reproductive age. Women with PCOS suffer from anovulatory infertility. Following lifestyle modification with weight reduction in obese PCOS women, clomifene citrate (CC) is considered the first line treatment for ovulation induction (OI) in these women. 75-80% of women will ovulate after CC administration. However, there is a discrepancy between the ovulation rate and pregnancy rate, which was reported to be 22% per each ovulating cycles after CC. Other alternatives, including gonadotropin injections and laparoscopic ovarian drilling, carried different disadvantages, such as costly treatment and risks of ovarian hyperstimulation syndrome and multiple pregnancy rate in gonadotrophin therapy and surgical risks and risk of ovarian failure in surgical treatment. The use of aromatase inhibitor, letrozole (LTZ), in reproductive medicine started in 2001. After this publication, there have been many groups of investigators studying the use of LTZ either in OI or ovarian stimulation in IVF cycles. A large multicentre randomized trial reported a significantly higher ovulation rate and live-birth rate comparing LTZ with CC. In majority of the publications, the multiple pregnancy rate was lower in LTZ group than in CC group. This can be attributed to the higher chance of monofollicular development after LTZ compared with CC. However, there is no information comparing the hormonal profile and follicular development after letrozole and CC. Mild ovarian stimulation using LTZ or CC in conjunction with intrauterine insemination is commonly offered to ovulatory women with unexplained infertility, minimal endometriosis or mild factor to improve the pregnancy rate. There is again no information comparing the hormonal profile and follicular development after letrozole and CC in ovulatory women. The aim of this study is to compare the hormonal profile after the use of LTZ and CC in anovulatory PCOS women and ovulatory women with unexplained subfertility. The hypothesis is that the FSH risk after LTZ is shorter than that of CC.
NCT02154958
300 women with unexplained infertility who are already decided to be treated with ICSI will be recruited from Cairo university hospitals and Dar Al-Teb subfertility centre. On the second day of menstruation serum FSH, LH, Prolactin and Oestradiol will be assessed and the antral follicular count (AFC) will be assessed using a vaginal ultrasound scan. AFC will be defined as the number of follicles measuring 3-10mm. All patients will have standard pituitary down-regulation followed by (Human menopausal gonadotrophin (HMG) stimulation until the day of (Human chorionic gonadotrophin (HCG) administration. On the day of HCG administration, ovarian ultrasound scan will be performed using a transvaginal probe and the Preovulatory follicle count (PC) will be assessed, (PFC) is defined as number of follicles measuring≥16mm. FORT will be calculated as: (PFC) \* 100/AFC.
NCT01569945
What is the best medication for hormonal stimulation in cycles with high intra-uterine insemination: tablets of Clomifen (5 days) followed by tablets of Ethinyl Estradiol (5 days) or daily injections with Human Menopausal Gonadotropin (Menopur)?
NCT01501214
The hypothesis of this randomized double blind study is that the live birth rates are significantly higher after the use of atosiban prior to the embryo transfer in patients undergoing in vitro fertilization (IVF) treatment. This study aims to compare the live birth rates of IVF treatment between patients receiving atosiban and placebo prior to the transfer.