Clinical trials
Infertility clinical trials
Below are recruiting infertility clinical trials, each written for real people, not researchers. We’re tracking 262 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04872660RecruitingPhase 4
Gushen Antai pill to improve IVF ongoing pregnancy rates
This trial studies whether a traditional Chinese medicine pill (Gushen Antai) can improve the chance of an IVF pregnancy that continues (“ongoing pregnancy rate”) and assess its safety. It’s for people starting their first IVF/ICSI cycle with normal ovarian function reserve.
Jinan, ShandongAges 21–42 - NCT04878224Recruiting
Look at uterine lining area in IVF outcomes
This study follows women who are having IVF/ICSI or frozen embryo transfer (FET) to see how a specific area of the uterine lining relates to pregnancy outcomes. It may help doctors better predict which embryo-transfer situations lead to better results.
LisbonAges 18–42 - NCT04880590Recruiting
Testing embryo transfer in women with a heterosexual partner
This trial is looking at women who have a heterosexual sexual relationship and are doing an embryo transfer using a frozen embryo cycle (often called FET). It may help researchers understand how sex-related factors could matter for outcomes around embryo transfer.
BarcelonaAges Any age - NCT04959864Recruiting
Food supplement study for sperm DNA damage in men
This trial tests whether a daily food supplement (with myo-inositol, N-acetyl-cysteine, zinc, and vitamins) can reduce sperm DNA damage. It enrolls men with higher-than-normal sperm DNA fragmentation, and it checks semen health during the study.
ParisAges 20–45 - NCT05169541Recruiting
Testing a blood marker in repeated pregnancy loss
This study looks at whether a blood protein level called mannose binding lectin is linked to why some people have repeated pregnancy loss or unsuccessful embryo transfers. If you’ve had multiple losses or failed transfers, the study may help clarify biology behind reproduction and could guide future care.
AarhusAges 18–41 - NCT05173597Recruiting
Real-world study of follitropin delta dosing in IVF
This study looks at how follitropin delta is used in real clinics to help women stimulate eggs for IVF or ICSI. It may help doctors fine-tune dosing by comparing outcomes in everyday practice.
Lübeck, Schleswig-HolsteinAges 18–44 - NCT05244967Recruiting
Study of sexually transmitted infections and female fertility impact
This study looks at how sexually transmitted infections affect female fertility. It mainly enrolls young adults to better understand patterns and outcomes over time.
LübeckAges 18–22 - NCT05358483Recruiting
Study of mothers and babies’ health factors
This study follows women planning pregnancy and their children for many years to understand what social and health factors shape outcomes for mothers and infants. Your participation may help researchers better understand risks and protective factors before and after birth.
Chicago, IllinoisAges 18–44 - NCT05410782Recruiting
Prenatal supplements to improve sperm quality
This study tests whether a prenatal supplement for men can improve sperm quality in people trying to conceive. It focuses on improving semen results when there is low count, weaker movement, or abnormal shape.
Mississauga, OntarioAges 18–45 - NCT05421364Recruiting
Boosting your own immune cells to improve the uterine lining
This study gives a small amount of your own immune cells into the uterus to change the immune environment in the uterine lining. It aims to improve how the uterine lining supports implantation, especially for people trying to conceive with embryo transfer of normal (euploid) embryos.
Sofia, SofiaAges 20–50 - NCT05473273Recruiting
Blood test study during normal frozen embryo transfer
This study measures changes in your blood immune markers during frozen embryo transfer when the embryo is chromosomally normal. It may help clinics understand what blood immune patterns relate to successful pregnancy in natural or hormone-prepared cycles.
Abu Dhabi, Abu Dhabi EmirateAges 18–40 - NCT05599438Recruiting
Fitness and drug use study in recreational athletes
This study follows recreational athletes to understand how past and current anabolic-androgenic steroid (AAS) use relates to fitness changes over time. If you have used these substances in the past (and stopped more than 3 months ago), or you have never used them, you may be able to join.
CopenhagenAges 18 years+ - NCT05628987Recruiting
Gut bacteria study in men with sperm production problems
This trial looks at whether gut bacteria (microbiome) and lifestyle factors are linked to poor sperm production or sperm quality. You may be asked for stool, urine, and blood samples and to complete questionnaires about diet and habits to help researchers understand possible connections.
Guangzhou, GuangdongAges 18–45 - NCT05750849Recruiting
Checks progesterone levels to predict pregnancy in fertility treatment
This study looks at whether a blood progesterone level around the time of a pregnancy test during fertility treatment helps predict which patients will have an ongoing pregnancy. It may help doctors better understand who is most likely to continue developing a pregnancy during artificial cycles.
Valencia, ValenciaAges 18–50 - NCT05763498Recruiting
Uterine findings during IVF and IVF-related pregnancy outcomes
This trial looks at a specific area of the uterus during fertility treatment and how it relates to pregnancy complications. It may help improve how doctors assess risk in people using IVF or frozen embryo transfer.
Funchal, MadeiraAges 18–40 - NCT05775198Recruiting
IVF trial using your own immune cells to support embryo transfer
This trial studies whether placing your own immune cells (PBMCs) that have been adjusted with a medicine called IFN-<i>t</i> before embryo transfer can improve IVF success. It may help support the uterine environment around the time of implantation.
Sofia, SofiaAges 18–50 - NCT05824819Recruiting
Study gut and pelvic microbiome in endometriosis surgery
This study looks at differences in the body’s microbes in people with endometriosis (and sometimes infertility) who are having key procedures through a laparoscopy (a small-camera surgery). It may help doctors better understand what’s going on and improve future treatment choices.
KrakowAges 18–45 - NCT05842239Recruiting
Hyperbaric oxygen therapy for low sperm count infertility
This trial tests whether breathing 100% oxygen in a pressurized chamber (hyperbaric oxygen therapy) can improve fertility in men who have an unexplained low sperm count. It may help by improving sperm health, but you would need multiple sperm tests and to be able to follow the clinic schedule.
ẔerifinAges 21 years+ - NCT05903859RecruitingPhase 3
Study to improve fertility in men after spinal cord injury
This phase 3 study tests a treatment to improve reproductive function (fertility-related measures) in men who have had a traumatic spinal cord injury. If you may be eligible, it could help researchers see whether the treatment improves reproductive outcomes for men with spinal cord injury.
Miami, FloridaAges 18 years+ - NCT05951075Recruiting
Power prenatal vitamins study for men with specific sperm results
This study looks at whether a specific “power” prenatal vitamin helps improve sperm measures in men whose at-home sperm test results fall in a certain range. It’s mainly for men living in the US or Canada who aren’t taking other prenatal vitamins already and don’t have known causes of male infertility.
Encino, CaliforniaAges 18–50 - NCT05962775Recruiting
Ethanol treatment before IVF for endometrioma removal
This trial tests whether injecting ethanol into endometriomas (benign ovarian cysts from endometriosis) before IVF can improve fertility outcomes. It may be considered if you have endometriomas within a specific size range and no major issues that affect IVF success.
AdanaAges 18–40 - NCT05969574Recruiting
Study links miscarriage history to low egg supply
This study looks at whether having multiple early miscarriages is connected to having a lower egg supply. It compares miscarriage history with “ovarian reserve” in people seen at specific fertility clinics.
Abu Dhabi, Abu Dhabi EmirateAges Any age - NCT05969795RecruitingPhase 1
Natural embryo transfer with or without progesterone support
This Phase 1 study compares pregnancy outcomes, especially live birth, when using a natural-cycle frozen embryo transfer with an embryo that is genetically euploid (normal chromosome number) versus doing transfers without luteal (progesterone) phase support. It may help determine whether adding progesterone around ovulation improves the chance of a live birth.
Abu DhabiAges 18–40 - NCT06006091Recruiting
Letrozole for preparing the womb before embryo transfer
This study tests if a medicine called letrozole can help prepare the lining of the womb for a frozen embryo transfer. It may be an option for women under 40 who have had limited previous IVF cycles.
ShanghaiAges Up to 40 years
Hear when a new Infertility trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for infertility?
- Yes. Clin2 currently lists 262 recruiting infertility 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 infertility 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 infertility 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.