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Comparison of Live Birth Rate in Natural Cycle Single Euploid FET Versus Without Luteal Phase Support

Comparison of Live Birth Rate (> 24 Weeks) in Natural Cycle (NC) Single Euploid Frozen Embryo Transfers (FET) With Versus Without Luteal Phase Support (LPS)

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05969795
Enrollment
342
Registered
2023-08-01
Start date
2023-09-05
Completion date
2026-09-30
Last updated
2025-01-09

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Pregnancy Related, Infertility, Female

Keywords

implantation rate, infertility, pregnancy rate, natural cycle, luteal phase support, live birth, progesterone

Brief summary

To evaluate whether single euploid embryo transfer in NC without routinely administered LPS is non-inferior to NC with routinely administered LPS.

Detailed description

In case the study will show that the live birth rate in single euploid NC frozen embryo transfer cycles without LPS is not inferior to NC cycles with LPS, treatment can be simplified, and participants comfort can be increased.

Interventions

DIAGNOSTIC_TESTTransvaginal ultrasound

Intermittent transvaginal ultrasound throughout the cycle to monitor follicular growth

DIAGNOSTIC_TESTSerial serum LH, E2, P4

Serial measurements of serum Luteinizing Hormone (LH), Estradiol (E2) and Progesterone (P4 )levels throughout the cycle to determine ovulation. LH-surge is identified when a rise of 180% above the previous level occurred and ovulation is confirmed with a decrease in E2 concentration, and a rise of progesterone level to ≥ 1.0 ng/ml (Irani et al., 2017).

On day of ET procedure, to administer 200 mg of vaginal progesterone and increase to 300 mg/day from the day after the ET onwards until the pregnancy test. In case of an implantation, vaginal P4 will be continued until 7 weeks of pregnancy

DIAGNOSTIC_TESTSerum P4 day of ET - Control Group

Serum P4 will be drawn before starting LPS in form of vaginal progesterone on the day of ET procedure

DIAGNOSTIC_TESTSerum P4 day of ET - Study Group

Serum P4 will be drawn when study group participants are admitted to the clinic for the ET procedure.

PROCEDUREEmbryo transfer

The procedure in which embryo is placed in the uterus.

DIAGNOSTIC_TESTSerum hCG 10 days after ET

Pregnancy will be confirmed / excluded by measurement of serum hCG 10 days after ET procedure and a level of \> 15 IU will be regarded as positive result. The definitions of biochemical, ectopic, clinical and ongoing pregnancy follow the ICMART criteria (Zegers-Hochschild, 2006)

DIAGNOSTIC_TESTSerum P4 10 days after ET

Serum P4 will be drawn on day 5 or day 6 after the ET procedure and together with the hCG 10 days after ET procedure

Sponsors

ART Fertility Clinics LLC
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

* Age: 18 to 40 years * Regular ovulatory cycles * Availability of at least one euploid embryo after Trophectoderm biopsy for PGT-A on day 5 or day 6 * Detection of ovulation by P4 rise \> 1.0 ng/ml after LH surge * P4 value of at least 5 ng/ml on day 4 after ovulation

Exclusion criteria

* History of repeated pre-menstrual spotting * Factors affecting the implantation through anatomical changes of the uterus / ovaries or the tubes (adenomyosis, Asherman syndrome, endometriosis, uterine fibroids / polyps, isthmocele with intracavitary fluid presence, hydrosalpinx….)

Design outcomes

Primary

MeasureTime frameDescription
Serum E2 and P4 levels on day 10 after ET procedure10 daysEstradiol and Progesterone levels on day 10 after embryo transfer
Serum P4 levels on ET day1 dayProgesterone level on the day of embryo transfer
Serum E2 and P4 levels on day 5 or 6 after ET procedure6 daysEstradiol and Progesterone levels on day 5 or 6 after embryo transfer
Implantation rate2 monthsNumber of embryos which have produced ultrasonographic evidence of an intrauterine gestational sac per the total number of embryos transferred into the uterine cavity (Zegers-Hochschild et al., 2009).
Clinical pregnancy rate2 monthshCG \> 15 Iu/ml and ultrasound confirmation of a gestational sac
Live birth rate41 weeksNumber of deliveries that resulted in a live born neonate, expressed per 100 embryo transfers (Zegers-Hochschild et al., 2009)

Countries

United Arab Emirates

Contacts

Primary ContactBarbara Lawrenz, PhD
barbara.lawrenz@artfertilityclinics.com+971 800 337845489
Backup ContactJonalyn Edades, RN
jonalyn.edades@artfertilityclinics.com+971 800 337845489

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026