IVF breakthrough? study tests if immediate embryo transfer boosts birth rates
NCT ID NCT04371783
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether transferring a frozen embryo in the first menstrual cycle after egg retrieval leads to more live births than waiting until the second cycle. Over 800 women undergoing their first frozen embryo transfer are randomly assigned to immediate or delayed transfer. The goal is to find the best timing for IVF success.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
What this could lead to
If immediate transfer works better, it could simplify IVF treatment and shorten the time to pregnancy for many women.
What could go wrong
This is a single-center study in China, so results may not apply to all IVF patients. The difference in live birth rates may be small or not significant.
Disclaimer
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the original study
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Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
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Locations
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Shanghai JiAi Genetics & IVF Institute
Shanghai, Shanghai Municipality, 200011, China