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NCT07455773
Endometrial receptivity is a key determinant of success in assisted reproductive technology (ART). A significant proportion of patients experience repeated implantation failure despite euploid embryos and adequate laboratory conditions. Thin endometrium, often defined as ultrasound-measured thickness \<7 mm at embryo transfer, is frequently refractory to estrogen therapy and associated with low implantation and clinical pregnancy rates. Platelet-Rich Plasma (PRP), obtained from autologous blood by double centrifugation, is rich in growth factors capable of stimulating cell proliferation, angiogenesis, and tissue regeneration, suggesting potential benefits for endometrial function. Preliminary studies indicate improved endometrial thickness and reproductive outcomes following intrauterine PRP infusion, but standardized protocols and systematic data are lacking. The PMA\_PREPAIRE study is a prospective, single-center, controlled, non-randomized interventional clinical trial conducted at the Reproductive Medicine Center of Cardinal Massaia Hospital, Asti. The study aims to evaluate the efficacy and safety of intrauterine infusion of autologous platelet-rich plasma (PRP), in association with hormone replacement therapy (HRT), in improving endometrial receptivity and reproductive outcomes in women with thin or refractory endometrium. The study includes a prospective control group treated with standard HRT alone. Eligible women will be treated with standard clinical care, with PRP infusion offered to those with insufficient response to HRT. Inclusion criteria include age 18-45, BMI 18-30 kg/m², history of ≥1 failed embryo transfer, EMT \<5 mm after ≥10 days of HRT, and normal routine lab tests. Exclusion criteria include endometrial disease, recent gynecological infection, and systemic conditions such as thrombocytopenia or coagulopathies. Procedures include standard HRT from cycle days 1-2, serial ultrasound monitoring of endometrial thickness from days 6-8, intrauterine PRP infusion if EMT ≤7 mm (up to three infusions per cycle), embryo transfer once EMT ≥7 mm, and follow-up through pregnancy testing and confirmatory ultrasound. Collected data will be analyzed using descriptive statistics, paired and unpaired comparative analyses, and multivariate logistic regression models to evaluate predictors of treatment response and reproductive outcomes (significance level p \< 0.05). A sample size of 34 patients per group was estimated to detect a 1.5 mm difference in endometrial thickness (EMT) with 90% statistical power. Considering an anticipated dropout rate of 15%, a total of 40 patients per group will be enrolled. The study includes: an intervention group consisting of 40 patients treated with HRT plus intrauterine PRP infusion; a prospective control group consisting of 40 patients with refractory thin endometrium treated with standard HRT alone, without PRP.
NCT07363018
The goal of this clinical trial aims to investigate whether a non-invasive implantation window prediction model, constructed based on characteristic changes in peripheral blood miRNAs during the peri-implantation period, can improve pregnancy outcomes in patients with unexplained recurrent implantation failure undergoing frozen embryo transfer. Researchers will compare the clinical pregnancy outcomes between individualized embryo transfer guided by implantation window results and conventional embryo transfer, to observe whether implantation window-guided individualized embryo transfer can improve the clinical efficacy for patients with recurrent implantation failure (RIF). Participants will complete implantation window testing as required by the study protocol, undergo randomization and blinding, and proceed with embryo transfer according to their assigned group.
NCT03900780
Assessing whether Preimplantation Genetic Testing for Aneuploidy (PGT-A) can increase the ongoing pregnancy rate per transferred embryo and can decrease the time to pregnancy and miscarriage rate in patients with Recurrent Implantation Failure (RIF)
NCT04998279
Intrauterine infusion of granulocyte colony stimulating factor and reproductive outcomes in infertile women with history of recurrent implantation failure
NCT03996837
This study is a randomized controlled clinical trial to compare the pregnancy outcomes of infertile women with recurrent implantation failure. The study population consisted of infertile women with a history of recurrent implantation failure who had failed to achieve a clinical pregnancy which at least four good quality embryos transfers and are now candidate for IVF-ICSI or freeze embryo transfer cycles with and without intra uterine infusion of platelet rich plasma in Reproductive Biomedicine Research Center, Royan institute, Tehran Iran.
NCT01715974
The purpose of this study is to determine whether in Assisted Reproductive Technologies the treatment with GM-CSF, a growth factor working on stem cells, may improve the pregnancy rate and pregnancy outcome in patients experiencing recurrent implantation failure in IVF cycles.
NCT04822207
In order to explore the effect of acupuncture on the clinical outcome of IVF-ET in patients with recurrent implantation failure, the patients divide into the experimental group or the control group. In the experimental group, those patients undergo acupuncture at the beginning of embryo transfer cycle three times a week until 14 days after embryo transfer. In the control group, those patients do not receive any treatments during embryo transfer cycle. Statistical analysis of the two groups of primary endpoint and secondary endpoint are done.
NCT04085783
The endometrial function and endometrial receptivity have been accepted to be major limiting factors in the establishment of pregnancy. In spite of improved almost all aspects of IVF: ovarian stimulation, embryo culture and transfer, the pregnancy rates still not satisfactory. The bottleneck is the process of implantation. Recurrent implantation failure (RIF) is one of the nightmares in reproductive medicine and despite several strategies that have been described for management; there is no universal agreement yet. Recently, intrauterine infusion of platelet-rich plasma (PRP) is described to promote endometrial growth and receptivity, PRP has been investigated as a therapeutic approach for several medical disorders in dermatology and rheumatology, but its use in IVF is still limited. Objective: To evaluate the effectiveness of intrauterine perfusion of autologous platelet-rich plasma in the improvement of pregnancy rate in RIF patients.
NCT03549728
The aim of this study is to evaluate the effect of granulocyte colony-stimulating factor on clinical pregnancy rate in patients with endometriosis undergoing in-vitro fertilization after recurrent implantation failure.
NCT03081325
Recurrent miscarriage(RM) and recurrent implantation failure (RIF) are clinical challenge for clinicians and patients who are desperate for a healthy child.The specific etiology contains chromosomal abnormalities, reproductive anatomical abnormalities, endocrine disorders, reproductive system infections, autoimmune and environmental factors. However there are still 50% to 60% RM and RIF which don't have a clear cause,mainly associated with alloimmune factors.Among various treatments,lymphocytes active immunotherapy is the most common treatment method, and its clinical efficacy is widely recognized although its action mechanism is not clear so far.
NCT03365466
The aim of the study is to investigate whether Low Dose Aspirin and Low Molecular Weight Heparin could increase the uterine perfusion, and finally improve the implantation and pregnancy rates in patients with unexplained recurrent implantation failure.
NCT02752568
300 recurrent implantation failure patients will be alternatively assigned to assisted hatching , endometrial scratch , and no treatment ,100 patients in each group
NCT02681367
This is the first study to investigate, whether pregnancy and implantation rates would improve in patients with recurrent implantation failure (RIF), if all embryos were to be frozen and transferred in a consecutive natural cycle.