Clinical trials: Frozen Embryo Transfer
Hormone Replacement Therapy, Estrogen
Estrogen Supplementation Mode in HRT-FET Cycle: a RCT
A systematic review and meta-analysis concluded that there is insufficient evidence to recommend one particular protocol for HRT with regard to pregnancy rates after frozen embryo transfer, and no comparison of estrogen dose or…
- Conditions
- Hormone Replacement Therapy, Estrogen, Live Birth Rate
- Trial name
- NCT04503915
- Testing
- different estrogen supplementation modes
- Volunteers
- 784 people
- Sponsor
- Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Duration of Estrogen Administration
The Impact of Estrogen Administration Duration in Hormonally Prepared Frozen Embryo Transfer Cycles
This prospective controlled study aimed to investigate the effect of the duration of estrogen (E2) administration prior to progesterone (P) initiation on live birth rates (LBR) in frozen embryo transfer (FET) cycles.
- Trial name
- NCT05825885
- Testing
- E2
- Where
- Turkey (Türkiye)
- Volunteers
- 420 people
- Sponsor
- Akdeniz University
Infertility, Female
Effect of Oxytocin Antagonists on Implantation Success Rates of Frozen-thawed Embryo Transfer
Uterine contraction has a negative impact on implantation and pregnancy rates. Inhibition of oxytocin receptors decreases uterine contraction frequency both on pregnant and non-pregnant women.
- Trial name
- NCT03904745
- Testing
- Atosiban
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 250 people, healthy volunteers welcome
- Sponsor
- Bezmialem Vakif University
Infertility
Graduated Embryo Score (GES) in the Fresh Cycle Predicts Outcome From Frozen Embryo Transfer
Evaluation of embryo quality in the fresh cycle as a predictor of outcome from frozen embryo transfer.
- Trial name
- GES/FET (NCT00694434)
- Where
- United States
- Volunteers
- 183 people, healthy volunteers welcome
- Sponsor
- Sher Institute for Reproductive Medicine, Las Vegas
Vaginal Flora Imbalance
Vaginal Microbiome and IVF Pregnancy Outcome
The aim of this prospective, observational study is to investigate the prevalence of vaginal dysbiosis among women undergoing IVF procedures in the US.
- Trial name
- NCT05150639
- Testing
- IVF
- Where
- United States
- Volunteers
- 301 people, healthy volunteers welcome
- Sponsor
- Freya Biosciences ApS
Infertility
Availability of Poor Quality Embryos
The purpose of this study is to explore a method to identify the viability of day-3 poor quality embryos
- Trial name
- Availability (NCT01715545)
- Where
- China
- Volunteers
- 481 people
- Sponsor
- The Second Affiliated Hospital of Kunming Medical University
IVF
The Effect of Sildenafil Citrate on Frozen Embryo Transfer Cycles
to investigate the value of adding sildenafil citrate during endometrial preparation in patients undergoing frozen-thawed embryo transfer and its effect on endometrial thickness and pregnancy rates.
- Trial name
- NCT05951413
- Testing
- Sildenafil Citrate, estradiol
- Where
- Egypt
- Volunteers
- 110 people
- Sponsor
- Beni-Suef University
IVF, Frozen Embryo Transfer (FET)
Maternal Cardiovascular Adaption to Pregnancy in IVF Patients Following Frozen Embryo Transfer (FET)
Aim of the study is to explore the effect of a lacking corpus luteum on maternal cardiovascular and metabolic adaption to pregnancy by the use of magnetic resonance imaging (MRI).
- Conditions
- IVF, Frozen Embryo Transfer (FET), Cardiovascular Adaption, Magnetic Resonance Imaging (MRI)
- Trial name
- NCT06471140
- Testing
- magnetic resonance imaging (MRI)
- Where
- Denmark
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Aalborg University Hospital
Pregnancy
PGT-A Versus Blastocyst Morphology Selection
Introduction Embryo aneuploidy is likely the leading cause of implantation failure in IVF cycles. Since the inception of IVF, non-invasive morphology based scoring has been the most widely used embryo selection method, resulting…
- Trial name
- NCT03095053
- Testing
- comprehensive chromosome screening
- Where
- Turkey (Türkiye)
- Volunteers
- 302 people
- Sponsor
- Antalya IVF
Female Infertility Due to Nonimplantation of Ovum
Endometrial Local Injury to Improve the Outcome of Embryo Transfer
The purpose of this study is to determine whether edometrial local injury improves the outcome of embryo transfer,and to find out more evidence about the time of trauma,the way of intervention,and the possible mechanism.
- Trial name
- NCT02306395
- Testing
- Endometrial local injury
- Where
- China
- Volunteers
- 100 people
- Sponsor
- Navy General Hospital, Beijing
Infertility, Female
Assessment of the Feasibility of Frozen Embryo Transfers in a Natural Cycle Among Obese Compared to Non-Obese Patients
This retrospective study included 1,831 single blastocyst frozen embryo transfer (FET) cycles performed between November 1, 2022 and August 31, 2025.
- Trial name
- NATEC (NCT07450300)
- Testing
- Modified natural cycle, Substitued cycle, Hormonal replacement therapy
- Where
- France
- Volunteers
- 1,831 people
- Sponsor
- Clinique Mathilde
COVID-19, Frozen Embryo Transfer
The Impact of Past Coronavirus Disease 19 (COVID-19) Infection on the Live Birth Rates of Frozen Embryo Transfer Cycles
This is a prospective observational study. In this study, we aim to investigate the effect of a recent past Covid-19 infection on the live birth rate in the frozen embryo transfer cycles
- Trial name
- NCT05739019
- Testing
- frozen embryo transfer
- Where
- China
- Volunteers
- 820 people
- Sponsor
- ShangHai Ji Ai Genetics & IVF Institute
Embryo Transfer, Fertilization in Vitro
Does Sexual Intercourse Affect the Outcomes of Frozen-thawed Embryo Transfer?
The goal of this clinical trial is to test whether sexual intercourse the night after embryo transfer affects thawed embryo implantation rates.
- Conditions
- Embryo Transfer, Fertilization in Vitro, Coitus
- Trial name
- NCT06134609
- Testing
- Sexual intercourse
- Where
- Israel
- Volunteers
- 656 people, healthy volunteers welcome
- Sponsor
- Sheba Medical Center
Infertility, Frozen Embryo Transfer (FET)
Platelet-Rich Plasma vs. Granulocyte Colony-Stimulating Factor vs. Placebo and Outcomes in Frozen Embryo Transfer
The goal of this clinical trial is to assess the impact of using Platelet-Rich Plasma (PRP) vs. Granulocyte Colony-Stimulating Factor (GCSF) vs.
- Trial name
- NCT03945812
- Testing
- Granulocyte Colony Stimulating Factor, Platelet Rich Plasma Arm, Saline
- Where
- Egypt
- Volunteers
- 665 people
- Sponsor
- Wael Elbanna Clinic
Infertility, IVF
The Importance of Embryo Transfer Day Progesterone Value in Natural Cycle Frozen Embryo Transfers and the Evaluation of the Effect of Rescue Therapy on Pregnancy Outcomes in Patients With Low Progesterone Levels
Thanks to recent advances in clinical practice and laboratory, embryo cryopreservation has become the first-line procedure in assisted reproductive technology.
- Conditions
- Infertility, IVF, Progesterone
- Trial name
- NCT05481684
- Testing
- Normal Progesterone group, Low Progesterone group
- Where
- 3 sites in Turkey (Türkiye)
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- Bezmialem Vakif University
Deep Infiltrating Endometriosis (DIE), Infertility
Ultra-Long GnRH-a Pretreatment for FET Outcomes in Patients With Deep Infiltrating Endometriosis
Deep infiltrating endometriosis is a severe form of endometriosis that may reduce fertility and negatively affect pregnancy outcomes after assisted reproductive treatment.
- Trial name
- DIE-GnRHa-FET (NCT07696351)
- Testing
- Triptorelin (GnRH agonists), Hormone Replacement Therapy (HRT)
- Where
- China
- Volunteers
- 120 people
- Sponsor
- Li-jun Ding
Luteal Phase Support
Two Different Types of Luteal Phase Support in Natural Cycle Frozen Embryo Transfer and Its Effect on Pregnancy Rates
The aim of the study is to compare the pregnancy rate between women treated with Gonadotropin Releasing Hormone (GnRH) agonist together with Human Chorionic Gonadotropin (HCG) and standard luteal support with progesterone…
- Trial name
- NCT05838105
- Testing
- GnRH agonist, hCG, Progesterone 100Mg Vag Tab
- Where
- Israel
- Volunteers
- 144 people, healthy volunteers welcome
- Sponsor
- Shaare Zedek Medical Center
IVF, Frozen Embryo Transfer (FET)
Single Step Protocol and Multi-step Warming Protocol for Blastocyst FET
The multi-step thawing protocol with a reduction of non-permeable cryoprotectant concentrations to reduce osmotic shock caused by the rapid influx of water.
- Conditions
- IVF, Frozen Embryo Transfer (FET), Embryo Thawing Protocol
- Trial name
- ONESTEP (NCT07088640)
- Testing
- Single-step warming protocol by thawing solution only, Standard warming protocol
- Where
- Vietnam
- Volunteers
- 816 people
- Sponsor
- Mỹ Đức Hospital
Frozen Embryo Transfer
Assessment of Endometrial and Sub-endometrial Vascularity Before and After PRP Infusion in Frozen Embryo Transfer Cycles
A good quality embryo and receptive endometrium are important aspects in achieving optimal outcomes in assisted reproductive treatment (ART). Endometrial thickness is an important marker of uterine receptivity.
- Trial name
- NCT04247204
- Testing
- Platelet-rich plasma intrauterine infusion
- Volunteers
- 30 people
- Sponsor
- Hatem AbuHashim
Thin Endometrium
a-PRP Intrauterine Instillation in Women With Thin Endometrium
This study sought to compare the endometrial thickness among infertile women with a history of thin endometrium together with previous cancellation from IVF/ICSI inspection of intrauterine instillation of autologous-PRP or no…
- Trial name
- PRP(a-PRP) (NCT06234540)
- Testing
- PRP, Standard treatment
- Where
- Thailand
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Mahidol University