Clinical trials
Nature, Human clinical trials
Below are recruiting nature, human clinical trials, each written for real people, not researchers. We’re tracking 17 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06390878Recruiting
Study on natural kindergarten yards
This study looks at how bringing nature back into kindergarten yards might affect children's health. It involves children who attend kindergarten and have not used antibiotics recently.
Helsinki, UusimaaAges 1–5 - NCT06390696Recruiting
Sand play for eczema: a biodiversity study
This study looks at whether playing in sand with different types of natural materials (to increase your contact with harmless microbes) can improve eczema symptoms. You would stop using your usual eczema creams during the trial to see if the sand play alone helps.
Helsinki, UusimaaAges 2–5 - NCT06370845RecruitingEarly Phase 1
Smell test to find natural odor in spinal fluid
This study investigates whether a natural smell can be detected in the fluid around your brain and spine (cerebrospinal fluid) after you sniff it. It aims to understand how smells enter the brain in people with different body weights who are already scheduled for a routine spinal tap.
BaselAges 18–60 - NCT04888923Recruiting
How environmental exposures affect your health
This study observes how your body responds to environmental exposures or injuries over time. It aims to understand how different factors like genetics or lifestyle affect your health.
Research Triangle Park, North CarolinaAges 18–90 - NCT06778239Recruiting
Childhood high blood pressure natural history study
This study follows children and young adults who have high blood pressure that started in childhood. It aims to understand why some kids develop high blood pressure without a clear cause, by looking at their genes, family history, and health over time. Participants will provide samples and medical information to help researchers learn more.
Bethesda, MarylandAges 2–99 - NCT07044050RecruitingPhase 1
Study of OT-C001 natural killer cells for large B cell lymphoma
This trial tests a new treatment made from specially activated natural killer cells from a donor. It is for people with diffuse large B cell lymphoma that has come back or not responded to other treatments, including CAR T-cell therapy.
MontpellierAges 18 years+ - NCT04049604Recruiting
Study of pregnancy cancer risk after unusual DNA screening
This study follows pregnant people who had unusual noninvasive prenatal blood test results, to better understand the natural course and possible causes, including concerns about maternal cancer. You may join during pregnancy or up to 2 years after delivery, and you would share medical information and undergo follow-up visits.
Bethesda, MarylandAges 18–100 - NCT06662266Enrolling by invitation
Induce XT bone graft in foot and ankle fusion
This trial is testing a new bone graft material called Induce XT to help bones heal together during foot or ankle fusion surgery. It might be a good option if you have a missing piece of bone in your hindfoot or ankle and need a fusion to reduce pain and improve function.
Halifax, Nova ScotiaAges 18 years+ - NCT05026138Recruiting
Study of severe HPV disease and why it keeps coming back
This study follows people with severe or hard-to-treat HPV-related conditions (and some closely related partners/household contacts) to learn how the virus causes illness and how the immune system responds. It may help doctors better predict who will develop severe disease and guide future treatments.
Bethesda, MarylandAges 3–100 - NCT06776341Recruiting
Study of GEMIN-5 genetic disorder
This study follows people with a confirmed GEMIN-5 genetic condition to learn more about how it affects their health and development over time. It aims to improve understanding and future care.
Pittsburgh, PennsylvaniaAges Any age - NCT02890342Recruiting
Studying Propionic Acidemia, gut bacteria, and body chemistry over time
This study follows people with propionic acidemia to better understand how the body, diet, gut bacteria, and blood chemistry change over time. It may help researchers learn more about the condition and how pregnancy, transplant, and daily life affect health.
Bethesda, MarylandAges 1 month–100 years - NCT00029965Recruiting
Understanding rare storage diseases over time
This study follows people with rare genetic conditions (GM1, GM2, sialidosis, or galactosialidosis) that affect how the body breaks down certain substances in cells. Researchers track how these diseases progress to better understand them and potentially help future patients.
Bethesda, MarylandAges 1 day–100 years - NCT05731141Recruiting
Study of lymphatic birthmarks and related genetic conditions
This study follows people who have lymphatic anomalies (lymphatic birthmarks) and sometimes related vascular or genetic conditions. It aims to better understand how these problems develop and what genetic causes may be involved.
Bethesda, MarylandAges 1 day–100 years - NCT06019182Recruiting
MEHMO syndrome: Understanding the condition over time
This study follows people with or at risk for MEHMO syndrome over time to better understand the condition and identify biological markers. It may include both affected individuals and their family members to see how the condition runs in families.
Bethesda, MarylandAges 1 week–100 years - NCT00250159Recruiting
Natural history study for hormone-related excess androgen
This study follows people who may have too much “androgen” (a hormone) to learn what causes it and how it changes over time. You may be followed even if the exact cause is not yet known, and your results may help doctors better understand these conditions.
Washington D.C., District of ColumbiaAges 1 day–99 years - NCT04708431Recruiting
Study of health and wellbeing in people with androgen insensitivity
This study looks at the long-term health and wellbeing of people with androgen insensitivity, a genetic condition that affects how the body responds to androgens (male-type hormones). It may help your care team understand what to watch for over time and improve future guidance for patients and families.
Bethesda, MarylandAges 8–99 - NCT06092346Recruiting
Understanding rare purine and pyrimidine metabolism disorders
This study aims to learn more about rare disorders of purine and pyrimidine metabolism (DPPM), which can affect the brain, immune system, kidneys, and muscles. Researchers will study people with these disorders, their family members, and healthy volunteers to better understand the condition over time.
Bethesda, MarylandAges 1 month–100 years
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Common questions
- Are there clinical trials for nature, human?
- Yes. Clin2 currently lists 17 recruiting nature, human 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 nature, human 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 nature, human 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.