| Not Yet Recruiting | Dual Trigger With HCG and GnRH Agonist on Thawed Modified Natural Cycle Embryo Transfer NCT07269392 | National Taiwan University Hospital | Phase 4 |
| Recruiting | Triggering Ovulation at Follicle Size Smaller or Larger Than 17mm in a Modified Natural Cycle NCT07088952 | Vida Recoletas Sevilla | N/A |
| Completed | Relationship Between Exposure to Phenols and Pregnancy Outcomes After Embryo Transfer NCT06767202 | keqin liu | — |
| Enrolling By Invitation | Virtual Reality for Anxiety Relief in Infertile Women NCT07020975 | Cyprus Aydin University | N/A |
| Recruiting | Impact of the Presence of the Corpus Luteum on Pregnancies Obtained Through Frozen Embryo Transfer(FET) NCT06896617 | Fundacion Clinic per a la Recerca Biomédica | Phase 4 |
| Recruiting | Transfer Direct System as a New Method for Embryo Transfer NCT06744049 | Premium Fertility | N/A |
| Recruiting | Letrozole-stimulated Cycle Strategy Versus Artificial Cycle Strategy (LETSACT) NCT06372119 | Mỹ Đức Hospital | N/A |
| Unknown | Music for Anxiety in Embryo Transfers NCT06084793 | Centro de Estudios en Genetica y Reproduccion | N/A |
| Recruiting | Does Sexual Intercourse Affect the Outcomes of Frozen-thawed Embryo Transfer? NCT06134609 | Sheba Medical Center | N/A |
| Recruiting | Effect of Pentoxyfilline on Endometrial Thickness and Frozen Embryo Transfer Outcomes NCT07499817 | Beni-Suef University | Phase 3 |
| Recruiting | Treatment Preventive for Pre-eclampsia by Acetylsalicylic Acid in Women Who Underwent Frozen Embryo Transfer NCT05460416 | Centre Hospitalier Universitaire de Liege | Phase 3 |
| Unknown | Assessing Ketorolac (Toradol) at Oocyte Retrieval NCT06026553 | Shady Grove Fertility Reproductive Science Center | Phase 1 |
| Completed | Retrospective Evaluation Blastocyst Development by Artificial Intelligency NCT07383480 | University Hospital, Clermont-Ferrand | — |
| Recruiting | Progesterone as Luteal Support in Frozen IVF Natural Cycles NCT04725864 | Vastra Gotaland Region | Phase 4 |
| Completed | Fresh Versus Freeze-only After CAPA IVM on PCOS Patients NCT04297553 | Mỹ Đức Hospital | N/A |
| Unknown | Oral Dydrogesterone vs. Micronized Vaginal Progesterone for Luteal Phase Support in Frozen-thawed Embryo Trans NCT04124913 | Memorial Sisli Hospital, Istanbul | Phase 4 |
| Completed | Natural Versus Artificial Cycle for Frozen-Thawed Embryo Transfer NCT03642665 | Universitaire Ziekenhuizen KU Leuven | Phase 4 |
| Unknown | Comparison of Vaginal and Transdermal Oestrogen Before Frozen Thawed Embryo Transfer NCT03518528 | University Hospital, Angers | — |
| Recruiting | Biomarkers of Endometrial Receptivity NCT04619524 | The Institute of Molecular and Translational Medicine, Czech Republic | N/A |
| Terminated | Prophylactic Antibiotics Prior to Embryo Transfer (PAPET): RCT NCT03386227 | Washington University School of Medicine | N/A |
| Completed | Mucus Removal Before Embryo Transfer NCT03292770 | Fundacion Dexeus | N/A |
| Completed | Immediate Versus Delayed FET Following a Stimulated IVF Cycle NCT03201783 | ShangHai Ji Ai Genetics & IVF Institute | N/A |
| Terminated | Transfer Strategy in an Oocyte Donation Programme NCT03088735 | Fundacion Dexeus | N/A |
| Unknown | Modified Luteal Support for Frozen-Thawed Embryo Transfer - A Prospective Study NCT02825290 | Sheba Medical Center | Phase 4 |
| Completed | Pregnancy Rate in Direct Versus Afterload Technique of Embryo Transfer NCT05364528 | Istituto Clinico Humanitas | — |
| Completed | Effect of Timing Progesterone Luteal Support on Embryo Transfer NCT03040830 | Mansoura Integrated Fertility Center | Phase 4 |
| Completed | Dose Escalation Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of Epelsiban Administered in NCT02703181 | GlaxoSmithKline | Phase 1 |
| Unknown | New Device to Maintain the Embryo Temperature During Transfer NCT02650310 | Rafael Bernabeu Pérez | N/A |
| Completed | Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Epelsiban in Healthy Female Volunteers NCT02257359 | GlaxoSmithKline | Phase 1 |
| Terminated | A Study to Evaluate Pharmacokinetics, Pharmacodynamics and Tissue Concentrations of Epelsiban NCT02213029 | GlaxoSmithKline | Phase 1 |
| Completed | Semi-quantitative Pregnancy Test to Monitor hCG Levels After Assisted Fertility Treatment NCT01919502 | Gynuity Health Projects | N/A |
| Completed | Phase 3 Trial to Evaluate the Efficacy and Safety of COL-1620 Vaginal Progesterone Gel NCT01863680 | Merck KGaA, Darmstadt, Germany | Phase 3 |
| Completed | Feasibility and Acceptability of Using the Semi-quantitative Pregnancy Test in an Assisted Fertility Setting NCT01846403 | Gynuity Health Projects | N/A |
| Completed | Study to Evaluate the Pharmacokinetics, Safety and Tolerability of GSK557296 in Healthy Women Volunteers After NCT01669083 | GlaxoSmithKline | Phase 1 |
| Completed | Debate on Progesterone Elevation on the Day of Triggering NCT04253470 | Istituto Clinico Humanitas | — |
| Completed | Natural Cycles With Spontaneous Versus Induced Ovulation in FET NCT03581422 | Istituto Clinico Humanitas | — |