Clinical trials
Infertility clinical trials
Below are recruiting infertility clinical trials, each written for real people, not researchers. We’re tracking 251 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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 - 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 - 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+ - NCT05899010RecruitingPhase 3
Micronized progesterone for frozen embryo transfers
This Phase 3 study tests whether adding micronized progesterone during frozen embryo transfer cycles helps support embryo implantation and pregnancy. You may benefit if your care team is already preparing the uterus with hormone therapy for a blastocyst transfer.
BarcelonaAges 18–50 - 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+ - NCT04166825Recruiting
Study how egg-stimulation blood clots form in infertility
This study looks at how your blood clots (and clotting proteins) behave around ovarian stimulation for infertility care. It may help researchers understand clot-related risks and improve how treatment is monitored.
Krakow, MałopolskaAges 18–40 - NCT02872532Recruiting
Freezing testicle tissue in children before cancer treatment
This trial studies how doctors collect and freeze a small piece of testicle tissue from boys to protect future fertility before treatments like chemotherapy or radiation. It may help families preserve options for having children later if testicular function is permanently affected.
Rochester, MinnesotaAges birth–17 years - NCT05538338Recruiting
Platelet-rich plasma to improve thin uterine lining
This trial studies whether platelet-rich plasma (PRP) can help grow a thin uterine lining enough to support a pregnancy. It is aimed at people who have had repeated unsuccessful frozen embryo transfers and had a lining of 6 mm or less.
Basking Ridge, New JerseyAges 18–45 - NCT05500573Recruiting
Using sperm selection to help choose your baby’s sex
This study looks at whether selecting sperm can increase the chance of having a baby of a specific sex. It is meant for couples using fertility treatments, and it may be helpful if you are trying to conceive and want to understand sperm selection options.
New York, New YorkAges 18–89 - 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 - NCT05454046Recruiting
Food intake study during fertility treatment
This study looks at what women and men eat during common fertility treatments. The goal is to understand whether food patterns may relate to fertility treatment outcomes, which could help improve future guidance.
AalborgAges Any age - 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 - 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 - 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 - NCT05181748RecruitingPhase 2/Phase 3
Platelet-rich plasma into ovaries for low egg response
This trial tests whether injecting your own platelet-rich plasma (PRP) into the ovaries can improve egg production in people who don’t respond well to fertility stimulation. It may help some “poor responders” get more usable eggs for IVF.
Athens, AtticaAges 35–47 - 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+ - 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 - NCT04719000RecruitingPhase 4
Personalized LH addition during IVF to improve egg growth
This trial tests whether adding a personalized amount of “LH” during IVF hormone stimulation can help your ovaries respond better. It may be useful if you’ve had a weaker IVF response before and fit specific age and egg-quality markers.
BarcelonaAges 35–40 - 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 - NCT04452305Recruiting
Frozen testicle tissue transplant to restore fertility
This study tests using previously frozen (cryopreserved) testicle cells or tissue to regrow testicular tissue. If you’ve had cancer treatment that can harm fertility, this may help restore natural fertility potential using your own tissue.
Pittsburgh, PennsylvaniaAges Any age - NCT04356664RecruitingPhase 2/Phase 3
GnRH shot before frozen embryo transfer for endometriosis
This trial studies whether giving a GnRH “downshifting” shot before transferring a frozen embryo can improve pregnancy outcomes for people with endometriosis or adenomyosis. It may help by changing hormone activity before the transfer.
SuresnesAges 18–36 - NCT03937661RecruitingPhase 2/Phase 3
Platelet-rich plasma injected into ovaries for poor egg responders
This trial studies whether an injection of your own “platelet-rich” plasma into the ovaries can improve egg production in people who respond poorly to fertility treatment. It targets women with low egg reserve and tries to see if this approach helps them get better results from stimulation.
AthensAges 35–47 - NCT03951194RecruitingPhase 2/Phase 3
Platelet-rich plasma infusion for perimenopausal women
This trial tests whether infusing a concentration of your own blood platelets into the ovary can help regulate menstrual cycles and improve ovarian function in women going through perimenopause.
AthensAges 40–50
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Common questions
- Are there clinical trials for infertility?
- Yes. Clin2 currently lists 251 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.