Condition
Subfertility clinical trials and research
As of November 12, 2026, Find a Trial lists 6 Subfertility clinical trials that are recruiting, at sites in 5 countries (most in China (2), Hong Kong (1), Belgium (1)). By phase: Phase 3 (2). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 6Clinical trials
- 5Countries
Newest Subfertility clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Daily gazpacho to improve semen quality in men with reduced sperm parameters | — | Madrid, Madrid | Recruiting | Jan 29, 2026 |
| New non-invasive method for selecting embryos in IVF | — | Hong Kong | Recruiting | Jun 9, 2023 |
| The FLORA project: looking for endometrium microbes linked to chronic endometritis and pregnancy success | — | Brussels | Recruiting | Apr 20, 2022 |
| Investigating the microbiome and HPV status in couples facing fertility issues | — | Graz, Styria | Recruiting | Apr 14, 2022 |
| Using GnRH agonist for IVF and FET to improve live birth rates | Phase 3 | Hong Kong, Hong Kong | Recruiting | Aug 22, 2019 |
| Using oral dydrogesterone to support pregnancy in natural cycle frozen embryo transfers | Phase 3 | Hong Kong, Hong Kong | Recruiting | Mar 1, 2019 |
All recruiting trials (6)
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Daily gazpacho to improve semen quality in men with reduced sperm parameters
This study will test whether drinking a daily 330 mL serving of gazpacho for 12 weeks helps men with reduced sperm quality improve their semen parameters and lower oxidative stress.
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New non-invasive method for selecting embryos in IVF
This study is testing a new non-invasive way to choose the best embryos during IVF to see if it can help more people get pregnant.
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The FLORA project: looking for endometrium microbes linked to chronic endometritis and pregnancy success
This study tests the relationship between the endometrial microbiome and chronic endometritis in women undergoing IVF/ICSI.
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Investigating the microbiome and HPV status in couples facing fertility issues
This study is looking at how the bacteria in the body and HPV might affect couples trying to get pregnant, while also testing if probiotics can improve sperm quality in men with fertility issues.
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Using GnRH agonist for IVF and FET to improve live birth rates
This study is testing if using a GnRH agonist instead of the usual hCG trigger can help women undergoing IVF have more successful pregnancies and if it can also support women during frozen embryo transfers.
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Using oral dydrogesterone to support pregnancy in natural cycle frozen embryo transfers
This study is testing if taking a pill called dydrogesterone can help women under 43 who are having frozen embryo transfers have a better chance of a successful pregnancy.
Related topics
Quick answers
How many Subfertility clinical trials are recruiting right now?
6, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 5 countries. The most sites are in China (2 trials), Hong Kong (1 trial), Belgium (1 trial), Austria (1 trial), Spain (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 3: 2. 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.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.