Clinical trials
Fertility clinical trials
Below are recruiting fertility clinical trials, each written for real people, not researchers. We’re tracking 170 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06518746Recruiting
Freezing gonadal tissue to preserve fertility
This study looks at the best way to preserve your fertility by freezing gonadal tissue (ovarian or testicular tissue) before it is removed. It may help if you have a disorder of sex development and are at risk of losing your ability to have children.
Aurora, ColoradoAges Up to 30 years - NCT06387498Recruiting
Testicular Tissue Freezing for Fertility Preservation
This trial stores testicular tissue before certain medical treatments that could cause permanent infertility. It may help preserve your chance of having biological children in the future.
Aurora, ColoradoAges Any age - NCT06238570Recruiting
Freezing donated eggs with a new semi-automated method
This trial is testing a new way to freeze donated eggs (vitrification) using a semi-automated device. If you are an egg donor with good ovarian reserve and healthy blood tests, you may be able to take part.
Clermont-FerrandAges 18–38 - NCT06211569Recruiting
Study on endometriosis and adenomyosis rates
This study looks at how common endometriosis and adenomyosis are in women who preserve their fertility for non-medical reasons. It may help understand these conditions better.
Paris, Île-de-France RegionAges 29–37 - NCT05837325Recruiting
Testing whether AMH levels predict embryo chromosome status
This study looks at whether a hormone level measured inside the fluid around eggs (follicular fluid) can predict whether embryos have the correct number of chromosomes. It may help clinics choose which embryos are more likely to be healthy.
Abu Dhabi, Abu Dhabi EmirateAges 18–40 - NCT06165367Recruiting
Does hyaluronan in the medium improve embryo transfer success?
This trial tests if adding hyaluronan to the liquid used during embryo transfer helps increase the chance of a successful pregnancy. It is for women who have at least one genetically normal embryo (tested with PGT-A) that was frozen on day 5 and are using hormone replacement therapy to prepare the uterus.
Abu Dhabi, Abu Dhabi EmirateAges 18–46 - NCT06175832RecruitingPhase 4
Two Hormone Protocols for Egg Growth in First IVF or Egg Freezing
This trial compares two hormone protocols for ovarian stimulation in women having their first cycle—either to freeze eggs for fertility preservation or for IVF with genetic testing. The goal is to see which method leads to more usable eggs while being easier on the patient.
GhentAges 18–40 - NCT06154083RecruitingPhase 4
Comparing stimulation doses for IVF with genetic testing
This trial tests two different intensities of ovarian stimulation for women undergoing IVF with genetic testing of embryos. It aims to see which approach leads to more healthy embryos ready for transfer.
BarcelonaAges 38–42 - 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 - NCT05443737RecruitingPhase 3
Telehealth care to protect fertility in young people with cancer
This trial tests a telehealth (video/phone) program that helps adolescents and young adults with cancer plan for future fertility. It may help you get support and options for preserving your ability to have children before cancer treatment affects it.
Duarte, CaliforniaAges birth–50 years - NCT05693220Recruiting
Sperm preparation for intrauterine insemination
This study looks at different ways to prepare sperm for intrauterine insemination (IUI), a fertility treatment where sperm is placed directly into the uterus. The goal is to see which preparation method leads to better outcomes for people trying to conceive.
San Francisco, CaliforniaAges 18 years+ - NCT01558544Recruiting
Freezing ovarian tissue for future fertility after early menopause risk
This study looks at freezing (cryopreserving) ovarian tissue in people who are at risk of early menopause because of cancer treatment or surgery. It may help preserve natural hormone function and possible future fertility for those who cannot or do not want to freeze eggs or embryos.
New York, New YorkAges Up to 45 years - NCT05616325Recruiting
Fertility follow-up for women after lymphoma chemotherapy
This study looks at long-term ovarian (egg-producing) fertility after chemotherapy for lymphoma, about 5 years after treatment ends. It may help doctors better understand pregnancy potential and guide future family-planning care.
LilleAges 18–45 - 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 - NCT01944332Recruiting
Gamete treatment for failed fertilization in IVF or ICSI
This study looks at a treatment given to egg and sperm (gametes) when fertilization fails during standard IVF or after one ICSI attempt. If fertilization has not worked well before, this trial may test an approach to improve the chances of fertilization.
New York, New YorkAges 21–89 - NCT05316493RecruitingPhase 2/Phase 3
Weight-loss and progesterone treatments for early uterine lining disease
This trial studies a weight-management approach plus a progesterone-releasing IUD (LNG-IUS) and megestrol to treat endometrial atypical hyperplasia, a high-risk precancer of the uterine lining. It may help shrink or control the abnormal cells while supporting fertility or keeping the uterus.
ShanghaiAges 18–45 - NCT04255615Recruiting
AI tool to improve IVF and embryo freezing assessments
This study uses an artificial intelligence (computer) tool to look at results from IVF and related fertility treatments. It may help clinicians assess outcomes more accurately for people going through ovarian stimulation and embryo or egg freezing.
New York, New YorkAges 18–89 - NCT05080569RecruitingPhase 4
Extra support after IUI for couples with unclear infertility
This study tests whether adding support in the period after ovulation (the “luteal phase”) helps people who are starting IUI (intrauterine insemination) because their infertility is unexplained. It’s designed to see if the added care improves chances when mild ovarian stimulation is used.
UtrechtAges 18 years+ - NCT04948658Recruiting
Freezing ovarian tissue to protect future fertility
This study looks at storing ovarian (ovary) tissue by freezing it for people at higher risk of losing fertility. It may help preserve options for having biological children later, especially for certain genetic conditions, cancer-related risks, or planned gonad removal.
Bethesda, MarylandAges 2–35 - NCT04619524Recruiting
Blood and lining tests during IVF cycles to guide endometrial timing
This study looks at “biomarkers” (test signals in your blood or cycle data) to better judge how ready the womb lining is during IVF. It compares two types of IVF hormone setups to see which approach best matches endometrial receptivity and supports successful embryo transfer.
Brno, South MoravianAges Up to 36 years - NCT04298255Recruiting
Testicular injection therapy for certain causes of male infertility
This trial studies a special lab procedure where selected immature sperm cells are injected to help infertile couples achieve pregnancy. It is designed for couples where the man has a specific type of sperm-making problem found during a testicular sperm extraction.
Winston-Salem, North CarolinaAges 18 years+ - NCT02972801Recruiting
Freezing testicle tissue to protect future fertility
This study helps collect and freeze testicle tissue for people who must have surgery, chemotherapy, medicines, or radiation that could permanently harm fertility. You may join if you’re newly diagnosed or need planned treatment that threatens testicular function, and you agree to long-term follow-up.
Pittsburgh, PennsylvaniaAges Any age - NCT03011684RecruitingPhase 3
Preserve eggs using tamoxifen and letrozole during new breast cancer treatment
This study tests whether taking tamoxifen and letrozole (with fertility injections) can help people with newly diagnosed, estrogen-sensitive breast cancer preserve eggs before cancer treatment starts. It may help protect future fertility by collecting eggs early, before chemotherapy or other treatments begin.
San Francisco, CaliforniaAges 18–50 - NCT02595255Recruiting
Testing a hormone marker to predict infertility risk after childhood cancer
This study looks at whether a blood test (a hormone marker) can predict a child’s future risk of infertility after cancer treatment. If it works, it could help families and doctors plan earlier fertility and puberty-related care.
Montegnée, LiègeAges 3–14
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Common questions
- Are there clinical trials for fertility?
- Yes. Clin2 currently lists 170 recruiting fertility 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 fertility 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 fertility 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.