Weight-Loss drug tirzepatide tested to boost healthy births after IVF
NCT ID NCT07811895
First seen Sep 10, 2026 · Last updated Sep 11, 2026 · Updated 1 time
Summary
Researchers are testing whether a weight-loss drug called tirzepatide, given for 16 weeks before a frozen embryo transfer, can improve the chance of a healthy birth in women with obesity. The trial enrolls women aged 20 to 40 with a BMI of 28 or higher who plan to have a frozen embryo transfer and have at least one embryo available. The main goal is to see how many women have a good birth outcome, defined as a live birth at 37 weeks or later with a normal birth weight and no major birth defects.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- tirzepatide, a dual GIP/GLP-1 receptor agonist drug
- What this could lead to
- If it works, tirzepatide before frozen embryo transfer could become a way to improve the chance of a healthy baby for women with obesity.
- What could go wrong
- This is a large but still experimental approach. Weight-loss drugs can cause nausea, vomiting, and other side effects, and it is not yet clear whether short-term use before transfer improves birth outcomes or is safe in this setting.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 1,510 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2030
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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20 to 40 years
- Sex
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Female participants only
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Women aged 20-40 years; 2. Body Mass Index(BMI) ≥ 28kg/m2; 3. Women who intend to undergo frozen-thawed embryo transfer; 4. At least one embryo available for transfer; 5. Be capable of giving informed consent. Exclusion Criteria: 1. Women who have been diagnosed with diseases affecting uterine cavity or endometrial receptivity; 2. Presence of endocrine disorders that may significantly affect body weight; 3. Use of drugs that may cause significant weight changes within 8 weeks before screening; 4. Presence of contraindications to the use of dual GIP/GLP-1 receptor agonist; 5. Previous bariatric surgery (e.g., gastric bypass) or planning to undergo such surgery during the study period; 6. Serum triglycerides (TG) \> 5.64mmol/L; 7. Calcitonin≥50 ng/L; 8. Presence of medical contraindications to assisted reproductive technology and/or pregnancy; 9. Any other condition considered inappropriate for participation by the investigator.
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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RenJi Hospital
Shanghai, Shanghai Municipality, 200025, China
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