Frozen embryo transfer: one extra day could boost success rates

NCT ID NCT05980091

Terminated Knowledge-focused Sponsor: ART Fertility Clinics LLC Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at whether transferring a frozen embryo on day 6 or day 7 of progesterone treatment leads to more live births. It includes 316 women aged 18-43 who have at least one high-quality, genetically normal embryo. Researchers will track pregnancy and miscarriage rates to find the optimal timing.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: Estradiol valerate and progesterone
What this could lead to: If successful, this could help doctors choose the best day to transfer embryos, potentially improving pregnancy and live birth rates for women using frozen embryos.
What could go wrong: This is an early-phase study that is currently suspended, so results are not yet available. The timing difference may not significantly affect outcomes, and individual factors could still play a large role.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

female infertility infertility disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

FERTILITY ISSUES INFERTILITY INFERTILITY, FEMALE

Contacts and locations

Locations

ART Fertility Clinics Dubai

Dubai, United Arab Emirates
ART Fertility Clinics LLC

Abu Dhabi, Abu Dhabi Emirate, 60202, United Arab Emirates

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