Also on Trial Friend:Turner Syndrome pageMatch Me
All 19 Turner Syndrome trials and their US sites
Enter your ZIP code above to sort them by how far their nearest open site is from you.
- Trial Investigating the Efficacy and Safety of Weekly Lonapegsomatropin Compared to Daily Somatropin in Children and Adolescents With Short Stature or Growth Failure Due to Growth Hormone Sufficient DisordersMost sites in Texas, California and ColoradoRecruitingPhase 3Ages 2-17Ascendis Pharma A/S27US sites
20 states - Bleeding Patterns in Sequential and Continuous Progesterone Supplementation in Adolescents With Turner SyndromeOnly in MissouriRecruitingPhase 4Ages 12-20Children's Mercy Hospital Kansas City1US site
- Gonadal Tissue Freezing for Fertility Preservation in Individuals at Risk for Ovarian Dysfunction, Premature Ovarian Insufficiency and Clinically Indicated GonadectomyOnly in MarylandRecruitingAges 2-35Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)1US site
- Natural History of Noncirrhotic Portal HypertensionOnly in MarylandRecruitingAges 12-100National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)1US site
- UTHealth Turner Syndrome Research RegistryOnly in TexasRecruitingThe University of Texas Health Science Center, Houston1US site
- Cardiopulmonary Exercise Testing in Girls (8-18y) with Turner Sydrome.RecruitingAges 8-18University Hospital, GhentNo US site yet
- Characterization of Hepatopathy in Turner Syndrome: Analysis of DeterminantsRecruitingAges 18+IRCCS Azienda Ospedaliero-Universitaria di BolognaNo US site yet
- Determining Dose Equivalence Between Oral and Transdermal Estrogen Treatment in Women With Turner SyndromeRecruitingPhase 4Ages 18-50Aarhus University HospitalNo US site yet
- Genetic and Epigenetic Background of Inner Ear Dysfunction in Turner SyndromeRecruitingAges 18-60Gødstrup HospitalNo US site yet
- GROWing Up With Rare GENEtic SyndromesRecruitingAges 18+dr. Laura C. G. de Graaff-HerderNo US site yet
- Identification of Y Chromosome From Free Circulating DNA in Patients With Turner SyndromeRecruitingAges 2-74University Hospital, Strasbourg, FranceNo US site yet
- Long Term Effects of Oral Versus Transdermal Estrogen Replacement Therapy in Turner SyndromeRecruitingPhase 4Ages 18-50Aarhus University HospitalNo US site yet
- Long-term Safety and Effectiveness of Growth Hormone With GHD, TS, CRF, SGA , ISS and PWS in ChildrenRecruitingAges 2+LG ChemNo US site yet
- Long-term Safety and Effectiveness of Growtropin®-II Treatment in Children With Short StatureRecruitingAges 2+Dong-A ST Co.No US site yet
- Lymphedema, Low-grade Inflammation and the Vasculature in Turner SyndromeRecruitingAges 18-100University of AarhusNo US site yet
- Parental Project Amongst 93 Patients With Turner SyndromeRecruitingAges 18-40University Hospital, Strasbourg, FranceNo US site yet
- Role of Cardiac AngioMR in Diagnosis of Cardiac and Vascular Anomalies in Adult Patients with Turner SyndromeRecruitingAges 18+Azienda Ospedaliero-Universitaria di ModenaNo US site yet
- The Danish TURNER Cryopreservation StudyRecruitingAges 2-17University of AarhusNo US site yet
- The Efficacy and Safety of Inpegsomatropin Injection in Children With Turner Syndrome (TS) and Short StatureRecruitingPhase 3Ages 2-12Xiamen Amoytop Biotech Co.No US site yet
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Who runs the Turner Syndrome trials in the US, and what stage they are in
Of the 6 Turner Syndrome trials with a US site, 1 is in Phase 3, the last stage before a company can ask the FDA for approval. One more is an earlier Phase 1 or 2 test of safety and dosing. One is a Phase 4 study of an already approved treatment. The remaining 3 have no drug phase, such as studies that follow people over time or test a device or a way of giving care. Companies run 1 of them, and universities, hospitals, foundations and government groups run 5. The most recently listed one first appeared on ClinicalTrials.gov on August 25, 2026.
Turner Syndrome trials in the US, state by state
All 6 Turner Syndrome trials with a US site accept children under 18. Their open sites are in 21 states and Washington, DC, most often District of Columbia, Maryland and Texas. A trial counts once in each state where it has an open site, and some trials accept both children and adults.
Show the other 12 states
US hospitals running the most Turner Syndrome trials
Centers that run trials for a rare condition often see more people with it than most clinics do, so this list can also help you find doctors who know Turner Syndrome.
- National Institutes of Health Clinical CenterBethesda, Maryland2 trials
- Children's Mercy HospitalKansas City, Missouri1 trial
- Children's National HospitalWashington D.C., District of Columbia1 trial
- University of Texas Health Science Center HoustonHouston, Texas1 trial
Help getting to a Turner Syndrome trial far from home
Ask the study team whether the trial pays back travel, parking and hotel costs, because many sponsors do. The FDA's guidance on paying research volunteers says paying back these costs does not count as pressuring someone to join.
These nonprofits also help patients reach care, and each one sets its own rules.
- Mercy Medical Angels
- Pays for gas cards, ground rides and airline tickets anywhere in the US, and it lists clinical trials as a reason to travel. Household income at or below 300% of the federal poverty guidelines, and usually a trip of 50 miles or more each way.
- Air Charity Network
- Volunteer pilots in all 50 states fly patients for free in small private planes, and members also fly people taking part in clinical trials. You must be able to walk and sit upright for the flight, show financial need and have a backup plan if weather cancels it.
- Ronald McDonald House
- Gives families a room near the hospital while a child gets care, through 394 House programs around the world. Families of a sick child, with rules set by each local chapter.
- Healthcare Hospitality Network
- Keeps a map of hospitality houses near hospitals, and most member houses charge little or nothing to patients and families. Each house sets its own rules, so check with the house near your study site.
Program details were checked on each program's website on October 24, 2026.
Questions about finding a Turner Syndrome trial near you
Are there Turner Syndrome clinical trials near me?
As of November 13, 2026, 19 Turner Syndrome clinical trials are recruiting now and 6 are not yet recruiting. In the US, 6 of them have at least 1 open site, across 21 states and Washington, DC. Enter your ZIP code on this page to rank every one of them by the distance to its closest open site, with the sites shown on a map.
Which states have Turner Syndrome clinical trial sites?
Recruiting Turner Syndrome trials list open sites in 21 states and Washington, DC. District of Columbia, Maryland and Texas have the most, and the table on this page lists every state.
Are there Turner Syndrome trials for children near me?
All 6 Turner Syndrome trials with a US site accept children under 18. Their open sites are in 21 states and Washington, DC, most often District of Columbia, Maryland and Texas. Each trial sets its own age limits, so check the ages listed on a trial before you contact it.
Who pays for travel to a Turner Syndrome clinical trial?
Many trial sponsors pay back travel, parking and hotel costs, so ask the study team before you rule out a far-away site. The FDA's guidance says paying back these costs does not count as pressuring someone to join. Charities such as Mercy Medical Angels and Air Charity Network can also help with rides and flights.
What if there is no Turner Syndrome trial near me?
Some trials send staff to your home or use a local lab, so fewer visits happen at the study site. You can also sign up on this page to get an email when a Turner Syndrome trial opens a new site or changes status.
How is the distance to a trial site measured?
Distances are straight-line miles from the center of your ZIP code to each study site's listed location, not driving distance. Your browser looks up the ZIP code's coordinates with a free map service, Zippopotam.us, and the ZIP code is never sent to or stored by Trial Friend.
FDA-approved for Turner Syndrome: Humatrope (somatropin).
Clinical trials near you for related conditions
Source: ClinicalTrials.gov, trials with status Recruiting or Not yet recruiting. Refreshed every 6 hours; counts as of November 13, 2026. Sites that ClinicalTrials.gov lists as closed or withdrawn are left out. Children means the trial's age group includes people under 18.