View clinical trials related to Implantation Failure.
Filter by:Women´s period comprises different hormonal stages, being one of them the stage for maximum receptivity and proper embryo implantation. This stage is named window of implantation (WOI), and is characterized by a specific molecular pattern than can be assessed by the Endometrial Receptivity Analysis (ERA® test), developed by Igenomix. Determining the WOI allows to schedule a personalized embryo transfer (pET) when the endometrium is most receptive for the implantation. The main objective of the present study is to improve our knowledge on the endometrial factor in an infertile population with previous implantation failures. To do so, a diagnosis of the endometrial receptivity to determine the WOI (ERA®) and the microbiome (EMMA®) of each participant will be performed, assessing its impact on deferred embryo transfers in terms of reproductive outcomes. Participants will follow their previously programmed IVF/ICSI treatment and, only when one embryo with no major anomalies is reported by PGT-A (Preimplantation Genetic Testing for Aneuploidies), they will be asked to attend to the specific study visit for endometrial fluid and biopsy samples collection. These samples will be used to determine the patient's WOI (ERA®) and endometrial microbiome (EMMA®). The results of neither of the tests will be disclosed to the patient or the doctor, being only used for the study purpose. After this visit, the patient will follow the pre-established schedule for an embryo transfer and pregnancy assessment.
Vaginal microbiome has in studies shown a link with the outcome of fertility treatment. The investigators wish to determine if it is possible to change an unfavorable vaginal microbiome using lactobacilli loaded vaginal supplements.
To assess live birth after embryo transfer according to an individual's ERA results as opposed to routine protocol for frozen embryo transfer (FET) cycles.
The objective of the present study to analyze the vaginal microbiome in patients who have not achieved gestation after oocyte donation treatment and after probiotic administration. All patients will receive vaginal probiotic according to the standard regimen. Sample collection will be performed the embryo transfer day and on the day of the pregnancy test. Follow up of gestation will be carried out. The analysis of the vaginal microbiome will be performed though massive genetic sequencing (determination of 16SRNA). The study variables, among others, are vaginal microbiome pattern after probiotic administration, the gestation rate, and the abortion rate.
This proposed research is a single center, prospective, single-blinded, randomized controlled trial, designed to evaluate IVF pregnancy outcomes following endometrial injury in 254 patients with implantation failure. Patients will be identified during their work-up and treatment at Shady Grove Fertility Reproductive Science Center. Only Shady Grove patients are eligible for the study. The investigators hypothesize in patients with one or more previous failed day 5 blastocyst transfers, injury to the endometrium via endometrial biopsy will improve clinical pregnancy outcomes compared to controls.
Recently, it has been suggested that culture of embryos in EmbryoGen medium can increase the live birth rate in IVF patients with a previous history of pregnancy loss. Couples requiring IVF treatment and with a past experience of implantation failure will be included in the study. Controlled ovarian stimulation protocol will consist of an agonist down regulation and follicular stimulation by recombinant FSH. Fertilization will be achieved by standard IVF or intracytoplasmic sperm injection. Fertilized eggs will be cultured in 6% CO2, 5% O2, 89% N2 atmosphere in microdrops. In the treatment group EmbryoGen culture medium (EG, Origio, Måløv, Denmark) will be adopted throughout the culture period. In the control group, inseminated oocytes will be cultured in standard culture conditions, i.e. IMS1 medium (ISM1, Origio, Måløv, Denmark), maintaining unchanged all other culture conditions. Procedures of embryo transfer, will be carried out on day 2 using EmbryoGen or ISM1 respectively. The endometrial support will be the same in the two groups.
In this study the investigators compare the usual way of embryo transfer (without medication) with an embryo transfer while administering oxytocine antagonist. This to improve implantation and increase the pregnancy rate.
It was previously demonstrated in in vitro fertilization (IVF) patients that local injury of the endometrium during a spontaneous menstrual cycle that precedes IVF treatment doubled the rates of implantation and pregnancy. The hypothesis of our present study is that the endometrial injury procedure will have the same beneficial effect in patients undergoing controlled ovarian hyperstimulation (COH) combined with intrauterine insemination (IUI).