Clinical trials
Subfertility clinical trials
Below are recruiting subfertility clinical trials, each written for real people, not researchers. We’re tracking 11 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04064840RecruitingPhase 3
Hormone treatment to improve IVF trigger and FET support
This study tests whether a specific hormone plan can improve outcomes in two parts of fertility treatment: IVF timing (the “trigger”) and hormone support during frozen embryo transfer (FET). It may help some people have better chances for successful embryo implantation and pregnancy.
Hong Kong, Hong KongAges 18–42 - NCT03859921RecruitingPhase 3
Dydrogesterone pill support during natural-cycle embryo transfer
This Phase 3 study tests whether taking an oral progesterone-like medicine (dydrogesterone) during the “luteal phase” after a natural-cycle frozen embryo transfer can improve support for implantation. It may help couples who are using their own embryos in a natural (hormone-sparing) cycle after thawing.
Hong Kong, Hong KongAges 18–42 - NCT05328999Recruiting
Study links fertility, pregnancy loss, and gut microbes
This trial studies how gut bacteria (your “microbiome”) may relate to infertility, recurrent pregnancy loss, and time to pregnancy. It may help researchers understand what could be changed to improve fertility outcomes.
Graz, StyriaAges 18–50 - NCT05337072Recruiting
Finding the cause of chronic endometritis in IVF patients
This study looks for a possible infection-related cause of chronic endometritis (a long-lasting inflammation inside the uterus) in people preparing for IVF/ICSI, to help find the best treatment. It involves a diagnostic hysteroscopy and may help doctors choose the most effective steps to improve pregnancy chances.
BrusselsAges Any age - NCT05677269Recruiting
Compare surgery for bowel endometriosis versus IVF pathway
This trial studies whether surgically removing colorectal (bowel) endometriosis works better and is more cost-effective than choosing an IVF/ICSI treatment plan. It’s for people who want to get pregnant and are deciding between surgery and fertility treatments.
EindhovenAges 21–40 - NCT05896709Recruiting
IVF embryo selection using time-lapse embryo imaging analysis
This trial tests an add-on method to help choose embryos for IVF using non-invasive analysis of time-lapse embryo images. It may help clinics better sort embryos without taking extra tissue samples, as long as you meet specific imaging and embryo-quality requirements.
Hong KongAges Any age - NCT06051201Recruiting
ReceptIVFity test for IVF success prediction
This trial studies a vaginal swab test called ReceptIVFity that looks at the bacteria in your vagina to see if it can help predict how well IVF will work. You can join if you're about to start your first IVF cycle, are not on hormonal birth control or antibiotics, and your IVF is not for emergency reasons.
RotterdamAges 18–42 - NCT07684339Recruiting
Sperm protein test and fertility treatment
This study looks at a protein in sperm called phospholipase C zeta, which helps eggs develop after fertilization. It aims to see if measuring this protein can predict how well a couple will do with fertility treatments like IVF or ICSI.
Abu DhabiAges Any age - NCT07252518Recruiting
Pentoxifylline and CoQ10 for Sperm Motility
This trial tests if adding pentoxifylline to CoQ10 (a natural supplement) works better than CoQ10 alone to improve sperm movement in men with low sperm motility. If you have been trying to conceive and your semen analysis shows low motility, this study may help.
Dhaka, ShahbagAges 20–50 - NCT07375238Recruiting
Gazpacho daily for better sperm health
This study tests whether drinking gazpacho daily can improve sperm quality and reduce stress in the body. It may help men with low or abnormal sperm counts.
Madrid, MadridAges 18–45 - NCT07523022Enrolling by invitationPhase 4
Fertility Treatments for Low Sperm Count or Quality
This study compares two different hormone treatments to see which one better improves sperm health and increases pregnancy chances in men with low or abnormal sperm. You'll receive either injections or pills designed to boost sperm production.
SzegedAges 18 years+
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Common questions
- Are there clinical trials for subfertility?
- Yes. Clin2 currently lists 11 recruiting subfertility studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a subfertility trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a subfertility trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.