Clinical trial NCT04855669: Effect of Embryo Migration in Fresh Oocyte Donation Cycles
Official title: Effect of Embryo Migration After Embryo Transfer With Fresh Oocyte Donation Cycles on Pregnancy Outcomes
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Infertility
Keywords: embryo migration
embryo transfer
fresh oocyte donation cycle
live birth rate
Lead sponsor: Zeynep Kamil Maternity and Pediatric Research and Training Hospital
Sponsor class: OTHER
First posted: 2021-04-22
Enrollment: 653
Sex: FEMALE
Minimum age (years): 23
Maximum age (years): 50
Standard ages: ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: The study included fresh OD cycles of recipient women.

Brief summary: The investigators aimed to evaluate the impact of embryo distance from fundal endometrium, measured 60 minutes after transabdominal ultrasound guided embryo transfer(ET), on clinical pregnancy rates(CPR) and live birth rates(LBR) in fresh oocyte donation(OD) cycles.

Detailed description: Embryos were considered to be staying at the initial expulsion site for long years. However, in 1976 Edwards and Steptoe reported a tubal ectopic pregnancy after in vitro fertilization (IVF) with a day-3 embryo transfer, which may be accepted as the earliest evidence for migration of embryos from the cavity. The migration concept is very recently taken into consideration by few authors, with studies on fresh IVF and frozen ET cycles.

Oocyte donation (OD) is a method of ART, in which by using young oocytes from donors the embryo quality is optimized. OD cycles have high LBRs, and are the choice of treatment in advanced reproductive age, repeated IVF failure, premature ovarian insufficiency(POI) and particular heritable genetic diseases. Donor oocytes can be used as fresh or cryoprotected-thawed, where fresh oocytes have higher LBRs.

In the literature, there are no studies performed in fresh OD cycles about air bubble and fundus distance after ET, and there are no studies performed whether there is any embryo migration after 60 minutes of ET and its effects on CPR and LBR.

Therefore, the investigators conducted this study to evaluate the impact of embryo distance from fundal endometrium, measured 60 minutes after transabdominal USG guided ET, on CPR and LBR in fresh OD cycles. In literature, this study is first to focus on embryo migration and LBR in fresh OD cycles.

Eligibility criteria: Inclusion Criteria:

* fresh oocyte donation cycles
* Anatomically anteverted-anteflexed recipient uterus
* partners with normal sperm parameters

Exclusion Criteria:

* Data of women who did not give approval
* IVF cycles
* frozen-thawed embryo transfer cycles
* cryopreserved-thawed OD cycles
* abnormal sperm parameters or need of any testicular interventions
* Anatomically retroverted-retroflexed recipient uterus
* teneculum required embryo transfers
* difficult transfers

Primary outcomes:
measure: live birth rate
timeFrame: 1 year
Secondary outcomes:
measure: clinical pregnancy rate
timeFrame: 1 year
Other outcomes:
Locations:
city: Kyrenia
country: Cyprus
facility: Dunya In vitro fertilization center
Study officials:
References:
citation: Saravelos SH, Wong AW, Chan CP, Kong GW, Cheung LP, Chung CH, Chung JP, Li TC. Assessment of the embryo flash position and migration with 3D ultrasound within 60 min of embryo transfer. Hum Reprod. 2016 Mar;31(3):591-6. doi: 10.1093/humrep/dev343. Epub 2016 Jan 11.
citation: Ficicioglu C, Ozcan P, Kocer MG, Yesiladali M, Alagoz O, Ozkara G, Tayyar AT, Altunok C. Effect of air bubbles localization and migration after embryo transfer on assisted reproductive technology outcome. Fertil Steril. 2018 Feb;109(2):310-314.e1. doi: 10.1016/j.fertnstert.2017.10.032. Epub 2018 Jan 4.
citation: Ozdemir AZ, Ayas B, Guven D, Turkmen A. Embryo flash migration in fresh and frozen embryo transfers for day 3 and day 5 embryos. Eur J Obstet Gynecol Reprod Biol. 2019 Jul;238:33-37. doi: 10.1016/j.ejogrb.2019.04.025. Epub 2019 May 4.