Condition

Frozen Embryo Transfer (FET) clinical trials and research

• 7Clinical trials
• 4Countries

Newest Frozen Embryo Transfer (FET) clinical trials

All recruiting trials (7)

• Endometrial Waves and Pregnancy in FET Cycles with Hormone Therapy

  This study tests whether patterns of uterine contractions during hormone-prepared frozen embryo transfer affect pregnancy outcomes.

  Recruiting Mỹ Đức Hospital · Ho Chi Minh City · NCT07675213

• Comparing two vaginal progesterone forms for frozen embryo transfer

  This compares whether soft vaginal progesterone capsules are easier to use, better tolerated, and give similar pregnancy results as vaginal progesterone pessaries for women having frozen embryo transfer.

  Recruiting Instituto Valenciano de Infertilidade de Lisboa · Lisbon · NCT07461909

• FET-LET-2x2: Testing natural vs medicated natural cycles for frozen embryo transfer

  This study tests four approaches to preparing the uterus for frozen embryo transfer to see which yields the best pregnancy rate in women undergoing IVF.

  Recruiting University of Novi Sad · Novi Sad · NCT07425990

• How frozen embryo transfer preparation affects uterine wave activity

  We will test whether preparing for frozen embryo transfer with hormones or using a natural cycle changes uterine contractions in women having FET.

  Recruiting Mỹ Đức Hospital · Ho Chi Minh City and 1 other locations · NCT07358468

• Levothyroxine for women with mild (subclinical) hypothyroidism having IVF/ICSI and frozen embryo transfer

  This project will try giving low‑dose levothyroxine to women with subclinical hypothyroidism undergoing IVF/ICSI with frozen embryo transfer to see if it improves pregnancy outcomes.

  Recruiting Mỹ Đức Hospital · Ho Chi Minh City, Ho Chi Minh and 1 other locations · NCT07257250

• Single-step versus multi-step blastocyst warming for frozen embryo transfer

  This tests whether a simpler single-step thawing solution works as well or better than the standard multi-step warming for women having frozen blastocyst transfers.

  Recruiting Mỹ Đức Hospital · Ho Chi Minh City, City · NCT07088640

• Does luteal support improve outcomes in modified natural-cycle frozen embryo transfer?

  This will test whether adding progesterone (with or without hCG) during a modified natural-cycle frozen embryo transfer helps people aged 18–40 with a good frozen blastocyst get pregnant.

  Recruiting at 5 sites Phase 4 Dunamenti REK Istenhegyi IVF Center · Budapest, Budapest and 4 other locations · NCT06875752

Related topics

Quick answers

How many Frozen Embryo Transfer (FET) clinical trials are recruiting right now?

7, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.

Where are these trials running?

In 4 countries. The most sites are in Vietnam (4 trials), Serbia (1 trial), Hungary (1 trial), Portugal (1 trial). Each study page lists its sites and which ones are recruiting.

What phases are they in?

Phase 4: 1. Trials with no phase listed are usually device, behavioural or observational studies.

How do I join one?

Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.

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